List of Chinese inventions

Four Great Inventions

Paper

Printing

Gunpowder

Compass

Pre-Shang

• Bell: Clapper-bells made of pottery have been found in several archaeological sites. The earliest metal bells, with one found in the Taosi site, and four in the Erlitou site, dated to about 2000 BC, may have been derived from the earlier pottery prototype. Early bells not only have an important role in generating metal sound, but arguably played a prominent cultural role. With the emergence of other kinds of bells during the Shang Dynasty, they were relegated to subservient functions; at Shang and Zhou sites, they are also found as part of the horse-and-chariot gear and as collar-bells of dogs.
• Coffin, wooden: The earliest evidence of wooden coffin remains, dated at 5000 BC, was found in the Tomb 4 at Beishouling, Shaanxi. Clear evidence of a wooden coffin in the form of a rectangular shape was found in Tomb 152 in an early Banpo site. The Banpo coffin belongs to a four-year-old girl, measuring 1.4 m by 0.55 m and 3–9 cm thick. As many as 10 wooden coffins have been found from the Dawenkou culture site at Chengzi, Shandong. The thickness of the coffin, as determined by the number of timber frames in its composition, also emphasized the level of nobility, as mentioned in the Classic of Rites, Xunzi and Zhuangzi. Examples of this have been found in several Neolithic sites; the double coffin, the earliest of which was found in the Liangzhu culture site at Puanqiao, Zhejiang, consists of an outer and an inner coffin, while the triple coffin, with its earliest finds from the Longshan culture sites at Xizhufeng and Yinjiacheng in Shandong, consists of two outer and one inner coffins.
• Cookware and pottery vessel: The earliest known pottery vessels, dating to 20,000 to 19,000 BP, were excavated in Xianrendong Cave located in the Jiangxi province of China. The presence of scorched surfaces on the pot shards indicates that they were likely used as cookware. An excavation of Yuchanyan Cave in Hunan province found pottery dating to 18,300 to 15,430 BP. The manufacture of pottery by hunter-gatherers in East Asia predates the emergence of agriculture in that region by 10,000 years, challenging the traditionally held belief that pottery resulted from the Neolithic Revolution.

• Dagger-axe: The dagger-axe or ge was developed from agricultural stone implement during the Neolithic, dagger-axe made of stone are found in the Longshan culture site at Miaodian, Henan. It also appeared as ceremonial and symbolic jade weapon at around the same time, two being dated from about 2500 BC, are found at the Lingjiatan site in Anhui. The first bronze ge appeared at the early Bronze Age Erlitou site, where two were being found among the over 200 bronze artifacts at the site, three jade ge were also discovered from the same site. Total of 72 bronze ge in Tomb 1004 at Houjiazhuang, Anyang, 39 jade ge in tomb of Fu Hao and over 50 jade ge at Jinsha site were found alone. It was the basic weapon of Shang and Zhou infantry, although it was sometimes used by the "striker" of charioteer crews. It consisted of a long wooden shaft with a bronze knife blade attached at a right angle to the end. The weapon could be swung down or inward in order to hook or slash, respectively, at an enemy. By the early Han Dynasty, military use of the bronze ge had become limited ; they were slowly phased out during the Han Dynasty by iron spears and iron ji halberds.
• Deepwater drilling: Some of the earliest evidence of water wells are located in China. The Chinese discovered and made extensive use of deep drilled groundwater for drinking. The Chinese text The Book of Changes, originally a divination text of the Western Zhou dynasty, contains an entry describing how the ancient Chinese maintained their wells and protected their sources of water. Archaeological evidence and old Chinese documents reveal that the prehistoric and ancient Chinese had the aptitude and skills for digging deep water wells for drinking water as early as 6000 to 7000 years ago. A well excavated at the Hemudu excavation site was believed to have been built during the Neolithic era. The well was cased by four rows of logs with a square frame attached to them at the top of the well. 60 additional tile wells southwest of Beijing are also believed to have been built around 600 BC for drinking and irrigation.
• Bricks, fired: The oldest fired bricks were found at the Neolithic Chinese site of Chengtoushan, dating back to 4400 BC. They were made of red clay, baked on all sides, and used as flooring for houses. By 3300 BC, fired bricks were being used at Chengtoushan to pave roads and form building foundations, roughly at the same time as the Indus Valley Civilisation. While sun-dried bricks were used much earlier in Mesopotamia, fired bricks are significantly stronger as a building material. Bricks continued to be used during 2nd millennium BC at a site near Xi'an. Fired bricks were found in Western Zhou ruins, where they were produced on a large scale. The carpenter's manual Yingzao Fashi, published in 1103 during the medieval Chinese Song dynasty described the brick making process and glazing techniques then in use.

• Lacquer: Lacquer was used in China since the Neolithic period and came from a substance extracted from the lac tree found in China. A red wooden bowl, which is believed to be the earliest known lacquer container, was unearthed at a Hemudu site. The British sinologist and historian Michael Loewe says coffins at many early Bronze Age sites seem to have been lacquered, and articles of lacquered wood may also have been common, but the earliest well-preserved examples of lacquer come from Eastern Zhou Dynasty sites. However, Wang Zhongshu disagrees, stating that the oldest well-preserved lacquerware items come from a Xiajiadian site in Liaoning excavated in 1977, the items being red lacquered vessels in the shape of :Image:Gu wine vessel from the Shang Dynasty.jpg|Shang Dynasty bronze gu vessels. Wang states that many lacquerware items from the Shang Dynasty, such as fragments of boxes and basins, were found, and had black designs such as the Chinese dragon and taotie over a red background. Queen Fu Hao was buried in a lacquered wooden coffin. There were three imperial workshops during the Han Dynasty established solely for the purpose of crafting lacquerwares; fortunately for the historian, Han lacquerware items were inscribed with the location of the workshop where they were produced and the date they were made, such as a lacquerware beaker found in the Han colony in northwestern Korea with the inscription stating it was made in a workshop near Chengdu, Sichuan and dated precisely to 55 AD.
• Millet cultivation: The discovery in northern China of domesticated varieties of broomcorn and foxtail millet from 8500 BC, or earlier, suggests that millet cultivation might have predated that of rice in parts of Asia. Clear evidence of millet began to cultivate by 6500 BC at sites of Cishan, Peiligang and Jiahu. Archaeological remains from Cishan sum up to over 300 storage pits, 80 with millet remains, with a total millet storage capacity estimated for the site of about 100,000 kg of grain. By 4000 BC, most Yangshao areas were using an intensive form of foxtail millet cultivation, complete with storage pits and finely prepared tools for digging and harvesting the crop. The success of the early Chinese millet farmers is still reflected today in the DNA of many modern East Asian populations, such studies have shown that the ancestors of those farmers probably arrived in the area between 30,000 and 20,000 BP, and their bacterial haplotypes are still found in today populations throughout East Asia.
• Rowing oar: Rowing oars have been used since the early Neothilic period; a canoe-shaped pottery and six wooden oars dating from the 6000 BC have been discovered in a Hemudu culture site at Yuyao, Zhejiang. In 1999, an oar measuring 63.4 cm in length, dating from 4000 BC, has also been unearthed at Ishikawa Prefecture, Japan.
• Plastromancy: The earliest use of turtle shells comes from the archaeological site in Jiahu site. The shells, containing small pebbles of various size, colour and quantity, were drilled with small holes, suggesting that each pair of them was tied together originally. Similar finds have also been found in the Dawenkou burial sites of about 4000–3000 BC, as well as in Henan, Sichuan, Jiangsu and Shaanxi. The turtle-shell shakers for the most part are made of the shell of land turtles, identified as Cuora flavomarginata. Archaeologists believe that these shells were used either as rattles in ceremonial dances, shamantic healing tools or ritual paraphernalia for divinational purposes.
• Ploughshare, triangular-shaped: Triangular-shaped stone ploughshares are found at the sites of Majiabang culture dated to 3500 BC around Lake Tai. Ploughshares have also been discovered at the nearby Liangzhu and Maqiao sites roughly dated to the same period. David R. Harris says this indicates that more intensive cultivation in fixed, probably bunded, fields had developed by this time. According to Mu Yongkang and Song Zhaolin's classification and methods of use, the triangular plough assumed many kinds and were the departure from the Hemudu and Luojiajiao spade, with the Songze small plough in mid-process. The post-Liangzhu ploughs used draft animals.
• Pottery steamer: Archaeological excavations show that using steam to cook began with the pottery cooking vessels known as yan steamers; a yan composed of two vessel, a zeng with perforated floor surmounted on a pot or caldron with a tripod base and a top cover. The earliest yan steamer dating from about 5000 BC was unearthed in the Banpo site. In the lower Yangzi River, zeng pots first appeared in the Hemudu culture and Liangzhu culture and used to steam rice; there are also yan steamers unearthed in several Liangzhu sites, including 3 found at the Chuodun and Luodun sites in southern Jiangsu. In the Longshan culture site at Tianwang in western Shandong, 3 large yan steamers were discovered.
• Pottery urn: The first evidence of pottery urn dating from about 7000 BC comes from the early Jiahu site, where a total of 32 burial urns are found, another early finds are in Laoguantai, Shaanxi. There are about 700 burial urns unearthed over the Yangshao areas and consisting more than 50 varieties of form and shape. The burial urns were used mainly for children, but also sporadically for adults, as shown in the finds at Yichuan, Lushan and Zhengzhou in Henan. A secondary burials containing bones from child or adult are found in the urns in Hongshanmiao, Henan. Small hole was drilled in most of the child and adult burial urns, and is believed to enable the spirit to access. It is recorded in the Classic of Rites that the earthenware coffins were used in the time of legendary period, the tradition of burying in pottery urns lasted until the Han Dynasty when it gradually disappeared.

• Rice cultivation: In 2002, a Chinese and Japanese group reported the discovery in eastern China of fossilised phytoliths of domesticated rice apparently dating back to 11,900 BC or earlier. However, phytolith data are controversial in some quarters due to potential contamination problems. It is likely that demonstrated rice was cultivated in the middle Yangtze Valley by 7000 BC, as shown in finds from the Pengtoushan culture at Bashidang, Changde, Hunan. By 5000 BC, rice had been domesticated at Hemudu culture near the Yangtze Delta and was being cooked in pots. Although millet remained the main crop in northern China throughout history, several sporadic attempts were made by the state to introduce rice around the Bohai Gulf as early as the 1st century.
• Saltern: One of the earliest salterns for the harvesting of salt is argued to have taken place on Lake Yuncheng, Shanxi by 6000 BC. Strong archaeological evidence of salt making dating to 2000 BC is found in the ruins of Zhongba at Chongqing.

• Sericulture: Sericulture is the production of silk from silkworms. The oldest silk found in China comes from the Chinese Neolithic period and is dated to about 3630 BC, found in Henan province. Silk items excavated from the Liangzhu culture site at Qianshanyang, Wuxing District, Zhejiang date to roughly 2570 BC, and include silk threads, a braided silk belt and a piece of woven silk. A bronze fragment found at the Shang Dynasty site at Anyang contains the first known written reference to silk.
• Soybean cultivation: The cultivation of soybeans began in the eastern half of northern China by 2000 BC, but is almost certainly much older. Liu et al. stated that soybean originated in China and was domesticated about 3500 BC. By the 5th century, soybeans were being cultivated in much of East Asia, but the crop did not move beyond this region until well into the 20th century. Written records of the cultivation and use of the soybean in China date back at least as far as the Western Zhou Dynasty.
• Wet field cultivation and paddy field: Wet field cultivation, or the paddy field, was developed in China. The earliest paddy field dates to 6280 BP, based on carbon dating of the grains of rice and soil organic matter found at the Chaodun site in Kushan County. Paddy fields have also been excavated by archaeologists at Caoxieshan, a site of the Neolithic Majiabang culture.

  Shang and later

A

• Acupuncture: Acupuncture, the traditional Chinese medicinal practice of inserting needles into specific points of the body for therapeutic purposes and relieving pain, was first mentioned in the Huangdi Neijing compiled from the 3rd to 2nd centuries BC. The oldest known acupuncture sticks made of gold, found in the tomb of Liu Sheng, date to the Western Han ; the oldest known stone-carved depiction of acupuncture was made during the Eastern Han ; the oldest known bronze statue of an acupuncture mannequin dates to 1027 during the Song Dynasty.
• Animal zodiac: The earliest and most complete version of the animal zodiac mentions twelve animals which differ slightly from the modern version. Each animal matches the Earthly Branches and were written on bamboo slips from Shuihudi, dated to the late 4th century BC, as well as from Fangmatan, dating to the late 3rd century BC. Before these archaeological finds, the Lunheng written by Wang Chong during the 1st century provided the earliest transmitted example of a complete duodenary animal cycle.
• Armillary sphere, hydraulic-powered: Hipparchus credited the Ancient Greek mathematician, geographer, astronomer, and poet Eratosthenes as the first to invent the armillary sphere representing the celestial sphere. However, the Chinese astronomer Geng Shouchang of the Han Dynasty invented it separately in China in 52 BC, while the Han dynasty polymath Zhang Heng was the first to apply motive power to the rotating armillary sphere by a set of complex gears rotated by a waterwheel which in turn was powered by the constant pressure head of an inflow clepsydra clock, the latter of which he improved with an extra compensating tank between the reservoir and the inflow vessel.

  B

• Banknote: Paper currency was first developed in China. Its roots were in merchant receipts of deposit during the Tang Dynasty, as merchants and wholesalers desired to avoid the heavy bulk of copper coinage in large commercial transactions. During the Song Dynasty, the central government adopted this system for their monopolized salt industry, but a gradual reduction in copper production—due to closed mines and an enormous outflow of Song-minted copper currency into the Japanese, Southeast Asian, Western Xia and Liao Dynasty economies—encouraged the Song government in the early 12th century to issue government-printed paper currency alongside copper to ease the demand on their state mints and debase the value of copper. In the early 11th century, the Song Dynasty government authorised sixteen private banks to issue notes of exchange in Sichuan, but in 1023 the government commandeered this enterprise and set up an agency to supervise the manufacture of banknotes there. The earliest paper currency was limited to certain regions and could not be used outside specified bounds, but once paper was securely backed by gold and silver stores, the Song Dynasty government initiated a nationwide paper currency, between 1265 and 1274. The concurrent Jin Dynasty also printed paper banknotes by at least 1214.
• Bellows, hydraulic-powered: Although it is unknown if metallurgic bellows in the Han Dynasty were of the leather bag type or the wooden fan type found in the later Yuan Dynasty, the Eastern Han dynasty mechanical engineer and politician Du Shi applied the use of rotating waterwheels to power the bellows of his blast furnace smelting iron, a method which continued in use in China thereafter, as evidenced by subsequent records; it is a significant invention in that iron production yields were increased and it employed all the necessary components for converting rotary motion into reciprocating motion.
• Belt drive: The mechanical belt drive, using a pulley machine, was first mentioned in the text the Dictionary of Local Expressions by the Han Dynasty philosopher, poet, and politician Yang Xiong in 15 BC, used for a quilling machine that wound silk fibers on to bobbins for weavers' shuttles. The belt drive is an essential component to the invention of the spinning wheel. The belt drive was not only used in textile technologies, it was also applied to hydraulic powered bellows dated from the 1st century AD.
• Belt hook: The belt hook was a fastener used in China. Belt hooks date to the 7th century BC in China, and were made with bronze, iron, gold, and jade. Texts claim that the belt hook arrived in China from Central Asia during the Warring States period, but archaeological evidence of belt hooks in China predate the Warring States Period.
• Biological pest control: The first report of the use of an insect species to control an insect pest comes from "Nan Fang Cao Mu Zhuang" , attributed to Western Jin dynasty botanist Ji Han, in which it is mentioned that "Jiaozhi people sell ants and their nests attached to twigs looking like thin cotton envelopes, the reddish-yellow ant being larger than normal. Without such ants, southern citrus fruits will be severely insect-damaged". The ants used are known as huang gan ants. The practice was later reported by Ling Biao Lu Yi, in Ji Le Pian by Zhuang Jisu, in the Book of Tree Planting by Yu Zhen Mu, in the book Guangdong Xing Yu, Lingnan by Wu Zhen Fang, in Nanyue Miscellanies by Li Diao Yuan, and others.
• Blast furnace: Although cast iron tools and weapons have been found in China dating to the 5th century BC, the earliest discovered Chinese blast furnaces, which produced pig iron that could be remelted and refined as cast iron in the cupola furnace, date to the 3rd and 2nd centuries BC, while the vast majority of early blast furnace sites discovered date to the Han Dynasty period immediately following 117 BC with the establishment of state monopolies over the salt and iron industries during the reign of Emperor Wu of Han ; most ironwork sites discovered dating before 117 BC acted merely as foundries which made castings for iron that had been smelted in blast furnaces elsewhere in remote areas far from population centres.
• Bombard weaponry: see the entry on the "cannon" below.
• Bomb: The first accounts of bombs made of cast iron shells packed with explosive gunpowder—as opposed to earlier types of casings—were written in the 13th century in China. The term was coined for this bomb during a Jin Dynasty naval battle of 1231 against the Mongols. The History of Jin states that in 1232, as the Mongol general Subutai descended on the Jin stronghold of Kaifeng, the defenders had a "thunder-crash bomb" which "consisted of gunpowder put into an iron container ... then when the fuse was lit there was a great explosion the noise whereof was like thunder, audible for more than a hundred li, and the vegetation was scorched and blasted by the heat over an area of more than half a mou. When hit, even iron armour was quite pierced through." The Song Dynasty official Li Zengbo wrote in 1257 that arsenals should have several hundred thousand iron bomb shells available and that when he was in Jingzhou, about one to two thousand were produced each month for dispatch of ten to twenty thousand at a time to Xiangyang and Yingzhou. The significance of this, as British sinologist, scientist, and historian Joseph Needham states, is that a "high-nitrate gunpowder mixture had been reached at last, since nothing less would have burst the iron casing."
• Borehole drilling: By at least the Han Dynasty, the Chinese used deep borehole drilling for mining and other projects; The British sinologist and historian Michael Loewe states that borehole sites could reach as deep as 600 m. K.S. Tom describes the drilling process: "The Chinese method of deep drilling was accomplished by a team of men jumping on and off a beam to impact the drilling bit while the boring tool was rotated by buffalo and oxen." This was the same method used for extracting petroleum in California during the 1860s. A Western Han Dynasty bronze foundry discovered in Xinglong, Hebei had nearby mining shafts which reached depths of 100 m with spacious mining areas; the shafts and rooms were complete with a timber frame, ladders and iron tools. By the first century BC, Chinese craftsmen cast iron drill bits and drillers were able to drill boreholes up to 4800 feet deep. By the eleventh century AD, the Chinese were able to drill boreholes up to 3000 feet in depth. Drilling for boreholes was time consuming and long. As the depth of the holes varied, the drilling of a single well could up to nearly one full decade. It wasn't up until the 19th century that Europe and the West would catch up and rival ancient Chinese borehole drilling technology.
• Breeching strap: The breeching strap traces its roots back to the Chinese invented breast-strap or "breastcollar" harness developed during the Warring States era. The Chinese breast harness became known throughout Central Asia by the 7th century, introduced to Europe by the 8th century. The breeching strap would allow the horse to hold or brake the load as horse harnesses were previously attached to vehicles by straps around their necks as previously designed harnesses would constrict the horses neck preventing the horse from pulling heavier loads. The breeching strap acted as a brake when a cart tries to run forward when moving downwards on a slope and also make it possible to maneuver the cart in the reverse direction.
• Brine mining: Around 500 BCE, the ancient Chinese dug hundreds of brine wells, some of which were over 100 meters in depth. Large brine deposits under the earth's surface were drilled by drilling boreholes. Bamboo towers were erected, similar in style to modern-day oil derricks. Bamboo was used for ropes, casing, and derricks since it was salt resistant. Iron wedges were hung from a bamboo cable tool attached to a lever on a platform constructed atop the tower. The derricks required two to three men jumping on and off the lever that moved the iron wedge pounded into the ground to dig a hole deep enough into the ground to hit the brine.
• Bristle toothbrush: According to the United States Library of Congress website, the Chinese have used the bristle toothbrush since 1498, during the reign of the Hongzhi Emperor of the Ming Dynasty ; it also adds that the toothbrush was not mass-produced until 1780, when they were sold by a William Addis of Clerkenwell, London, England. In accordance with the Library of Congress website, scholar John Bowman also writes that the bristle toothbrush using pig bristles was invented in China during the 1490s. While Bonnie L. Kendall agrees with this, she noted that a predecessor existed in ancient Egypt in the form of a twig that was frayed at the end.

• Bulkhead partition: The 5th century book Garden of Strange Things'' by Liu Jingshu mentioned that a ship could allow water to enter the bottom without sinking, while the Song Dynasty author Zhu Yu wrote in his book of 1119 that the hulls of Chinese ships had a bulkhead build; these pieces of literary evidence for bulkhead partitions are confirmed by archaeological evidence of a 24 m long Song Dynasty ship dredged from the waters off the southern coast of China in 1973, the hull of the ship divided into twelve walled compartmental sections built watertight, dated to about 1277. Western writers from Marco Polo, to Niccolò Da Conti, to Benjamin Franklin commented on bulkhead partitions, which they viewed as an original aspect of Chinese shipbuilding, as Western shipbuilding did not incorporate this hull arrangement until the early 19th century.

  C

• Candle clock: Candle clocks have been used in China since at least the 6th century AD. The earliest reference of a candle clock is in a poem by You Jiangu around 520 AD.
• Cannon: The earliest known depiction of a cannon is a sculpture from the Dazu Rock Carvings in Sichuan dated to 1128, however the earliest archaeological samples and textual accounts do not appear until the 13th century. The primary extant specimens of cannon from the 13th century are the Wuwei Bronze Cannon dated to 1227, the Heilongjiang hand cannon dated to 1288, and the Xanadu Gun dated to 1298. However, only the Xanadu gun contains an inscription bearing a date of production, so it is considered the earliest confirmed extant cannon. The Xanadu Gun is 34.7 cm in length and weighs 6.2 kg. The other cannon are dated using contextual evidence. The oldest representation of a bombard can be found in the Chinese town of Ta-tsu. In 1985, the Canadian historian Robin Yates visited the Buddhist cave temples when he saw a sculpture on the wall depicting a demon holding a hand-held bombard. The muzzle seems to have a blast and flames coming from it which some believe is proof of some type of super gun. Yates examined the cave and believed the drawings dated back to the late 12th century.
• Cast iron: Confirmed by archaeological evidence, cast iron, made from melting pig iron, was developed in China by the early 5th century BC during the Zhou Dynasty, the oldest specimens found in a tomb of Luhe County in Jiangsu province; despite this, most of the early blast furnaces and cupola furnaces discovered in China date after the state iron monopoly under Emperor Wu was established in 117 BC, during the Han Dynasty ; Donald Wagner states that a possible reason why no ancient Chinese bloomery process has been discovered thus far is because the iron monopoly, which lasted until the 1st century AD when it was abolished for private entrepreneurship and local administrative use, wiped out any need for continuing the less-efficient bloomery process that continued in use in other parts of the world. Cast iron is comparatively brittle and is not suitable for purposes where a sharp edge or flexibility is required. An important Chinese innovation was the development of malleable iron in the 4th century BC, which enhanced the mechanical properties of cast iron through an annealing process. Furthermore, Wagner states that most iron tools in ancient China were made of cast iron in consideration of the low economic burden of producing cast iron, whereas most iron military weapons were made of more costly wrought iron and steel, signifying that "high performance was essential" and preferred for the latter.
• Celadon: Named after a pale-tinted spring green colour, Chinese archaeologist Wang Zhongshu asserts that shards having this type of ceramic glaze have been recovered from Eastern Han Dynasty tomb excavations in Zhejiang; he also asserts that this type of ceramic became well known during the Three Kingdoms. Richard Dewar disagrees with Wang's classification, stating that true celadon—which requires a minimum 1260 °C furnace temperature, a preferred range of 1285° to 1305 °C, and reduced firing—was not created until the beginning of the Northern Song Dynasty. The unique grey or green celadon glaze is a result of iron oxide's transformation from ferric to ferrous iron during the firing process. Longquan celadon wares, which the archeologist Nigel Wood at the University of Oxford writes were first made during the Northern Song, had bluish, blue-green, and olive green glazes and high silica and alkali contents which resembled later porcelain wares made at Jingdezhen and Dehua rather than stonewares.
• Chain drive, endless power-transmitting: The Greek Philon of Byzantium described a chain drive and windlass used in the operation of a polybolos, "but the chain drive did not continuously transmit power from shaft to shaft and hence they were not in the direct line of ancestry of the chain-drive proper". A continuously driven chain drive first appeared in 11th century China. Perhaps inspired by chain pumps which had been known in China since at least the Han Dynasty when they were mentioned by the Han dynasty philosopher Wang Chong, the endless power-transmitting chain drive was first used in the gearing of the clock tower built at Kaifeng in 1090 by the Song Chinese politician, mathematician and astronomer Su Song.
• Chain stitch: The earliest archaeological evidence of chain stitch embroidery dates from 1100 BC in China. Excavated from royal tombs, the embroidery was made using threads of silk. Chain stitch embroidery has also been found dating to the Warring States period. Chain stitch designs spread to Iran through the Silk Road.
• Chopsticks: The Han dynasty historian and writer Sima Qian wrote in the Records of the Grand Historian that King Zhou of Shang was the first to make chopsticks out of ivory in the 11th century BC; the most ancient archaeological find of a pair of chopsticks, made of bronze, comes from Shang Tomb 1005 at Houjiazhuang, Anyang, dated roughly 1200 BC. By 600 BC, the use of chopsticks had spread to Yunnan, and Töv Province by the 1st century. The earliest known textual reference to the use of chopsticks comes from the Han Feizi, a philosophical text written by writer and philosopher Han Fei in the 3rd century BC.
• Chromium, use of: The use of chromium was invented in China no later than 210 BC when the Terracotta Army was interred at a site not far from modern Xi'an; modern archaeologists discovered that bronze-tipped crossbow bolts at the site showed no sign of corrosion after more than 2,000 years, because they had been coated in chromium. Chromium was not used anywhere else until the experiments of French pharmacist and chemist Louis Nicolas Vauquelin in the late 1790s.
• Chuiwan: Chuiwan, a game similar to the Scottish-derived sport of golf, was first mentioned in China by Song dynasty writer Wei Tai in his Dongxuan Records ; it was popular amongst men and women in the Song Dynasty and Yuan Dynasty, while it was popular among urban men in the Ming Dynasty in much the same way that tennis was for early urban Europeans during the Renaissance. In 1282, the writer Ning Zhi published the Book of Chuiwan, which described the rules, equipment, and playing field of chuiwan, as well as included commentary of those who mastered its tactics. The game was played on flat and sloping grassland terrain and—much like the tee of modern golf—had a "base" area where the first of three strokes were played.
• Civil service examinations: During the Han Dynasty, the xiaolian system of recruiting government officials through formal recommendations was the chief method of filling bureaucratic posts, although there was an Imperial Academy to train potential candidates for office and some offices required its candidates to pass formal written tests before appointment. However, it was not until the Sui Dynasty that civil service examinations became open to all adult males not belonging to the merchant class and were used as a universal prerequisite for appointments to office, at least in theory. The civil service system was implemented on a much larger scale during the Song Dynasty, when an elite core of dynastic-founding and professional families lost their majority in government to a broad strata of lesser gentry families from throughout the country. The civil examination system was later adopted by China's other East Asian neighbors Japan and Korea. The imperial examination system attracted much attention and greatly inspired political theorists in the Western World, and as a Chinese institution was one of the earliest to receive such foreign attention. The Chinese examination system was introduced to the Western world in reports by European missionaries and diplomats, and encouraged the British East India Company to use a similar method to select prospective employees. Following the initial success in that company, the British government adopted a similar testing system for screening civil servants in 1855. Other European nations, such as France and Germany, followed suit. Modeled after these previous adaptations, the United States established its own testing program for certain government jobs after 1883.
• Co-fusion steel process: Although British scientist, sinologist, and historian Joseph Needham speculates that it could have existed beforehand, the first clear written evidence of the fusion of wrought iron and cast iron to make steel comes from the 6th century AD in regards to the Daoist swordsmith Qiwu Huaiwen, who was put in charge of the arsenal of Northern Wei general Gao Huan from 543 to 550 AD. The Tang Dynasty Newly Reorganized Pharmacopoeia of 659 also described this process of mixing and heating wrought iron and cast iron together, stating that the steel product was used to make sickles and Chinese sabers. In regards to the latter text, Su Song made a similar description and noted the steel's use for making swords.
• Coke as fuel: By the 11th century, during the Song Dynasty, the demands for charcoal used in the blast and cupola furnaces of the iron industry led to large amounts of deforestation of prime timberland; to avoid excessive deforestation, the Song Dynasty Chinese began using coke made from bituminous coal as fuel for their metallurgic furnaces instead of charcoal derived from wood.
• Color printing: By at least the Yuan Dynasty, China had invented color printing for paper. British art historian Michael Sullivan writes that "the earliest color printing known in China, and indeed in the whole world, is a two-color frontispiece to a Buddhist sutra scroll, dated 1346".
• Contour canal: After numerous conquests and consolidation of his empire, China's first emperor Qin Shi Huang commissioned the engineer Shi Lu to build a new waterway canal which would pass through a mountain range and connect the Xiang and Lijiang rivers. The result of this project was the Lingqu Canal, complete with thirty-six lock gates, and since it closely follows a contour line, it is the oldest known contour canal in the world.
• Counting rods: Counting rods are instruments used for performing calculations, which uses a grid of cells to represent a decimal position system. Each digit appears as a tally of rods with red rods designated as positive numbers and black rods designated as negative numbers. Archaeological evidence of counting rods dates back to the 2nd century BCE. The earliest pictorial depiction of counting rods appears on Warring States period ceramics excavated in Dengfeng in Henan. The oldest surviving counting rods are bamboo rods discovered in a Han dynasty tomb at Fenghuangshan

  D

• Dental amalgam: Dental amalgam were used in the first part of the Tang Dynasty in China, and in Germany by Dr. Strockerus in about 1528. Evidence of a dental amalgam first appears in the Tang Dynasty medical text Hsin Hsiu Pen Tsao written by Su Kung in 659, manufactured from tin and silver. Historical records hint that the use of amalgams may date even earlier in the Tang Dynasty. It was during the Ming Dynasty that the composition of an early dental amalgam was first published, and a text written by Liu Wen Taiin 1505 states that it consists of "100 shares of mercury, 45 shares of silver and 900 shares of tin."
• Diabolo: Chinese archaeologists theorize that Chinese Diabolos originated from Chinese spinning top. In Hemudu Excavation, wooden tops were excavated. In order to extend the spinning time of the tops, whip were used to spin the top. This released a sound and gradually evolved into the term "Kongzhu". It was speculated that the Chinese poet Cao Zhi in the Three Kingdoms period had composed the poem "Rhapsody of Diabolos 《空竹赋》", making it the first record of Diabolo in Chinese history. The authenticity of the poem "Rhapsody of Diabolos 《空竹赋》" however required further research and evidence of proof. By the medieval Tang dynasty, Chinese Diabolo became widespread as a form of toy. The Taiwanese scholar Wu Shengda 吳盛達 however argued that records of Chinese Diabolo only appeared during late Ming dynasty Wanli period, with its details well recorded in the book Dijing Jingwulue, referring to Diabolos as "Kong Zhong". Diabolos evolved from the Chinese yo-yo, which was originally standardized in the 12th century. The first mention of a diabolo in the Western World was made by a missionary, Father Amiot, in Beijing in 1792 during Lord Macartney's ambassadorship, after which examples were brought to Europe, as was the sheng.
• Dominoes: The Ming Dynasty writer Xie Zhaozhe initiated the legend that dominoes were first presented to the imperial court in 1112. However, the oldest confirmed written mention of dominoes in China comes from the Former Events in Wulin written by the Yuan Dynasty author Zhou Mi, who listed "pupai" as well as dice as items sold by peddlers during the reign of Emperor Xiaozong of Song. Andrew Lo asserts that Zhou Mi meant dominoes when referring to pupai, since the Ming author Lu Rong explicitly defined pupai as dominoes. The earliest known manual written about dominoes is the Manual of the Xuanhe Period written by Qu You. In the Encyclopedia of a Myriad of Treasures, Zhang Pu described the game of laying out dominoes as pupai, although the character for pu had changed. Traditional Chinese domino games include Tien Gow, Pai Gow, Che Deng, and others. The thirty-two-piece Chinese domino set differs from the twenty-eight-piece domino set found in the Western World during the mid 18th century. Dominoes first appeared in Italy during the 18th century, and although it is unknown how Chinese dominoes developed into the modern game, it is speculated that Italian missionaries in China may have brought and introduced the game to Europe.
• Dougong: A dougong is a building bracket which is unique to Chinese architecture. Since at least the Western Zhou Dynasty, they were placed between the top of a column and a crossbeam to support the concave roofs of beam-in-tier buildings which were archetypal of Chinese architecture. Each dougong is formed by double bow-shaped arms supported by a wooden block on each side. Dougong were also used for decorative and ceremonial rather than entirely pragmatic purposes of support, such as on solid brick pagodas like the Iron Pagoda built in 1049. The Yingzao Fashi building manual published in 1103 by the Song Dynasty official Li Jie :Image:Yingzao Fashi 3 desmear.JPG|featured illustrations and descriptions of dougong.
• Drawloom: The earliest confirmed drawloom fabrics come from the State of Chu and date c. 400 BC. Most scholars attribute the invention of the drawloom to the ancient Chinese, although some speculate an independent invention from ancient Syria since drawloom fabrics found in Dura-Europas are thought to date before 256 AD. Dieter Kuhn states that an analysis of texts and textiles from the Han Dynasty proves that the figured fabrics of that era were also crafted with the use of a drawloom. The drawloom was certainly known in Persia by the 6th century AD. Eric Broudy asserts there is virtually no evidence of its use in Europe until the 17th century, while the button drawloom was allegedly invented by Jean le Calabrais in the 15th century. Mary Carolyn Beaudry disagrees, stating that it was used in the medieval Italian silk industry.
• Drilling rig: The technique of percussion drilling for oil and gas originated during the ancient Chinese Han Dynasty in 500 BC, when percussion drilling was used to extract natural gas in Sichuan province. Iron bits were fastened to long bamboo poles, which were centered within a bamboo derrick. The poles were repeatedly hoisted, using cables woven from bamboo fiber. With the assistance of levers, very heavy bits could be raised, of sufficient weight to percussively bore through rock when repeatedly dropped. Han dynasty oil wells were around 10m deep; by the 10th century, depths of 100 meters could be achieved. By the 16th century, Chinese oil prospectors were using percussion drilling to create wells over 2000 feet deep. A modernized variant of the technique was used by American businessman Edwin Drake to drill Pennsylvania's first oil well in 1859, using small steam engines to power the drilling process.

  E

• Ephedrine: Ephedrine, known as ma huang in traditional Chinese medicine, originally as an extract of the herb Ephedra sinica, has been documented in China since the Han Dynasty as an antiasthmatic and stimulant. The industrial manufacture of ephedrine in China began in the 1920s, when the American pharmaceutical company Merck began marketing and selling the drug as ephetonin. Ephedrine exports between China and the West grew from 4 tonnes to 216 tonnes between 1926 and 1928.
• Escapement, hydraulic-powered : The escapement mechanism was first described for a mechanical washstand by the Greek Philon of Byzantium who also indicated that it was already used for clocks. An escapement mechanism for clockworks was later developed by the Buddhist monk, court astronomer, mathematician and engineer Yi Xing of the Tang Dynasty for his water-powered celestial globe in the tradition of the Han dynasty polymath and inventor Zhang Heng, and could be found in later Chinese clockworks such as the clock towers developed by the military engineer Zhang Sixun and polymath inventor Su Song. Yi Xing's escapement allowed for a bell to be rung automatically every hour, and a drum beaten automatically every quarter-hour, essentially a striking clock. Unlike the modern escapement which employs a suspended oscillating pendulum resting and releasing its hooks on a small rotating gear wheel, the early Chinese escapement employed the use of gravity and hydraulics. In Su Song's clock tower, scoop containers fixed to the spokes of a vertical waterwheel would be filled one by one with siphoned water from a clepsydra tank. When the weight of the water in the scoop filled to an excess, it overcame a counterweight that in turn tripped a lever allowing the scoop to rotate on a pivot and drain its water. However, as the scoop fell, it tripped a coupling tongue that temporarily pulled down on a long vertical chain, the latter yanking down on a balancing lever which would pull upward on a small chain connected to a locking arm, the latter lifting momentarily to release the top arrested spoke before coming back down to repeat the entire process over again. It should be pointed out that the Chinese intermittently working liquid-driven escapement had "only the name in common" with the true mechanical escapement of medieval European mechanical clocks of the 14th century onwards, which worked instead with weights, producing continuous but discrete beats and that derived from the Greek and Roman verge mechanism device of earlier mechanisms.
• Exploding cannonballs: The Huolongjing military manual compiled by the Ming dynasty military official Jiao Yu and the Ming dynasty military strategist and philosopher Liu Bowen in the mid 14th century described the earliest known exploding cannonballs, which were made of cast iron with a hollow core packed with gunpowder. Jiao and Liu wrote that when fired, they could set enemy camps ablaze. The earliest evidence for exploding cannonballs in Europe date to the 16th century. The Huolongjing also specified the use of poison and blinding gunpowder filled into exploding shells; the effects of this chemical warfare was described as such: "Enemy soldiers will get their faces and eyes burnt, and the smoke will attack their noses, mouths, and eyes."

  F

• Field mill: In the Yezhongji written by Lu Hui, various mechanical devices are described which were invented by two Later Zhao engineers known as Xie Fei, a Palace Officer, and Wei Mengbian, the Director of the Imperial Workshops. One of these is the field mill, which was essentially a cart with millstones placed onto the frame; these were mechanically rotated by the movement of the cart's terrain wheels in order to grind wheat and other cereal crops. A similar vehicle these two invented was the "pounding cart", which had wooden statues mounted on the top which were actually mechanical figures who operated real tilt hammers in order to hull rice; again, the device only functioned when the cart was moved forward and the wheels turned. The field mill lost its use in China sometime after the Later Zhao, but it was invented separately in Europe in 1580 by the Italian military engineer Pompeo Targone. It was featured in a treatise by the Italian engineer and writer Vittorio Zonca in 1607, and then in a Chinese book of 1627 that was compiled and translated by the German Jesuit polymath Johann Schreck and the Ming Dynasty Chinese author Wang Zheng, although by then it was considered by the Chinese to be an original Western contraption.
• Finery forge: In addition to accidental lumps of low-carbon wrought iron produced by excessive injected air in Chinese cupola furnaces, the ancient Chinese also created wrought iron by using the finery forge at least by the 2nd century BC, the earliest specimens of cast and pig iron fined into wrought iron and steel found at the early Han Dynasty site at Tieshengguo. Pigott speculates that the finery forge existed in the previous Warring States period, due to the fact that there are wrought iron items from China dating to that period and there is no documented evidence of the bloomery ever being used in China. The fining process involved liquifying cast iron in a fining hearth and removing carbon from the molten cast iron through oxidation. Wagner writes that in addition to the Han Dynasty hearths believed to be fining hearths, there is also pictoral evidence of the fining hearth from a Shandong tomb mural dated 1st to 2nd century AD, as well as a hint of written evidence in the 4th century AD Daoist text Taiping Jing.
• Fire arrow: One of the earliest weaponized forms of gunpowder was the fire arrow which received its name from the translated Chinese term huǒjiàn, which literally means fire arrow. In China a 'fire arrow' referred to a gunpowder projectile consisting of a bag of incendiary gunpowder attached to the shaft of an arrow from the 9th century onward. Later on solid fuel rockets utilizing gunpowder were used to provide arrows with propulsive force and the term fire arrow became synonymous with rockets in the Chinese language. In other languages such as Sanskrit 'fire arrow' underwent a different semantic shift and became synonymous with 'cannon.' Fire arrows are the predecessors of fire lances, the first firearm.
• Firecracker: The predecessor of the firecracker was a type of heated bamboo, used as early as 200 BC, that exploded when heated continuously. The Chinese name for firecrackers, baozhu, literally means "exploding bamboo." After the invention of gunpowder, gunpowder firecrackers had a shape that resembled bamboo and produced a similar sound, so the name "exploding bamboo" was retained. In traditional Chinese culture, firecrackers were used to scare off evil spirits.
• Fire lance: The fire lance was a proto-gun developed in the 10th century with a tube of first bamboo and later on metal that shot a weak gunpowder blast of flame and shrapnel; its earliest representation comes from :image:FireLanceAndGrenade10thCenturyDunhuang.jpg|a painting found at Dunhuang. The earliest confirmed employment of the fire lance in warfare was by Song dynasty forces against the Jin in 1132 during the siege of De'an, where they were used to great effect against wooden siege towers called "sky bridges": "As the sky bridges became stuck fast, more than ten feet from the walls and unable to get any closer, were ready. From below and above the defensive structures they emerged and attacked with fire lances, striking lances, and hooked sickles, each in turn. The people at the base of the sky bridges were repulsed. Pulling their bamboo ropes, they ended up drawing the sky bridge back in an anxious and urgent rush, going about fifty paces before stopping." The surviving porters then tried once again to wheel the sky bridges into place but Song soldiers emerged from the walls in force and made a direct attack on the sky bridge soldiers while defenders on the walls threw bricks and shot arrows in conjunction with trebuchets hurling bombs and rocks. The sky bridges were also set fire to with incendiary bundles of grass and firewood. Li Heng, the Jin commander, decided to lift the siege and Jin forces were driven back with severe casualties.
• Fireworks: Fireworks first appeared in China during the Song Dynasty, in the early age of gunpowder. The common people in the Song era could purchase simple fireworks from market vendors; these were made of sticks of bamboo packed with gunpowder, although grander displays were known to be held. Rocket propulsion was soon applied to warfare, and by the time of the mid 14th century there were many types of rocket launchers available.
• Fishing reel: In literary records, the earliest evidence of the fishing reel comes from a 4th-century AD work entitled Lives of Famous Immortals. The earliest known depiction of a fishing reel comes from a Southern Song painting done in 1195 by Song dynasty painter Ma Yuan called "Angler on a Wintry Lake," showing a man sitting on a small sampan boat while casting out his fishing line. Another fishing reel was featured in a painting by the Yuan dynasty painter Wu Zhen. The book Tianzhu lingqian, printed between 1208 and 1224, features two different woodblock print illustrations of fishing reels being used. An Armenian parchment Gospel of the 13th century shows a reel. The Sancai Tuhui, a Chinese encyclopedia published in 1609, features the next known picture of a fishing reel and vividly shows the windlass pulley of the device. These five pictures mentioned are the only ones which feature fishing reels before the year 1651 ; after that year they became commonly depicted in world art.
• Flamethrower, double piston and gunpowder-activated: Although the single piston flamethrower was first developed in the Byzantine Empire during the 7th century, the 10th-century Chinese flamethrower, or Pen Huo Qi, boasted a continuous stream of flame by employing double piston syringes spouting Greek fire which had been imported from China's maritime trade contacts in the Middle East. It was first used in battle 932 during the Five Dynasties and Ten Kingdoms period, and the earliest illustration is found in the early Song Dynasty military manuscript Wujing Zongyao of 1044, which also described the device in full. Unlike the Greek model which employed a furnace, the Pen Huo Qi was ignited by an incendiary gunpowder fuse.
• Flare: The earliest recorded use of gunpowder for signalling purposes was the 'signal bomb' used by the Song Dynasty Chinese as the Mongol-led Yuan Dynasty besieged Yangzhou in 1276. These soft-shelled bombs, timed to explode in mid-air, were used to send messages to a detachment of troops far in the distance. Another mention of the signal bomb appears in a text dating from 1293 requesting their collection from those still stored in Zhejiang. A signal gun appears in Korea by 1600. The Wu I Thu Phu Thung Chih or Illustrated Military Encyclopedia written in 1791 depicts a signal gun in an illustration.
• Folding screen: The folding screen is a type of furniture consisting of several frames or panels. Screens date back to China during the Eastern Zhou Dynasty period. These were initially one-panel screens in contrast to folding screens. Folding screens were invented during the Han Dynasty. Depictions of those folding screens have been found in Han Dynasty era tombs, such as one in Zhucheng, Shandong Province. During the Tang Dynasty, folding screens were considered ideal ornaments for many painters to display their paintings and calligraphy on. Many artists painted on paper or silk and applied it onto the folding screen. The landscape paintings on folding screens reached its height during the Song Dynasty.
• Forensic entomology: The Song Dynasty forensic science book Collected Cases of Injustice Rectified published by the Song Dynasty court judge, physician, medical scientist and writer Song Ci in 1247 contains the oldest known case of forensic entomology. In a murder case of 1235, a villager was stabbed to death and authorities determined that his wounds were inflicted by a sickle; this was a tool used for cutting rice at harvest time, a fact which led them to suspect a fellow peasant worker was involved. The local magistrate had the villagers assemble in the town square where they would temporarily relinquish their sickles. Within minutes, a mass of blow flies gathered around one sickle and none other, attracted to the scent of traces of blood unseen by the naked eye. It became apparent to all that the owner of that sickle was the culprit, the latter pleading for mercy as he was detained by authorities.
• Fragmentation bomb: The use of fragmentation in bombs dates to the 14th century, and first appears in the Ming Dynasty text Huolongjing. The fragmentation bombs were filled with iron pellets and pieces of broken porcelain. A heated mixture of salammoniac, tung oil, chin chih, scallion juice, and yin hsiu is poured into the bomb, coating the pellets. Once the bomb explodes, the resulting shrapnel is capable of piercing the skin and blinding enemy soldiers.
• Free reed aerophone: The musical pipe organ employing metal piston bellows had a long history in the Western world, dating back to the Hellenistic period. However, the Western pipe organ did not make use of the reed, which the ancient Chinese mouth organ employed. The latter instrument, called a sheng and made traditionally of bamboo pipes, was first mentioned in the Shi Jing of the Zhou Dynasty. The Chinese sheng is considered the ancestor of the harmonica, harmonium, concertina, accordion, and :Category:Free reed aerophones|all other reed organ instruments. A free reed organ was invented in the Arab world in the 13th century, while the German organ builder Heinrich Traxdorf of Nuremberg built one around 1460 AD. It is thought that the classical Chinese sheng travelled west through Russia during the 19th century, as it was described then in Saint Petersburg.
• Fuses: Documented evidence suggests that the earliest fuses were first used by the Chinese between the 10th and 12th centuries. After the Chinese had invented gunpowder, they began adapting its explosive properties for use in military technology. By 1044 they were using gunpowder in simple grenades, bombs, and flamethrowers, all of which required a fuse to be lit before being thrown at the enemy.

  G

• Gas cylinder: The world's first natural gas cylinders were invented in China during the medieval Tang dynasty where the Chinese drilled deep boreholes to retrieve natural gas and used airtight jointed bamboo pipes to collect and transport it for many miles to towns and villages.
• Gas lighting: The ancient Chinese during the Spring and Autumn period made the first practical use of natural gas for lighting purposes around 500 B.C. where they used bamboo pipelines to transport and carry both brine and natural gas for many miles to towns and villages.
• Gimbal: The gimbal is known as the 'Cardan' suspension after Italian polymath Gerolamo Cardano, yet it was known long before him. The British scientist, sinologist, and historian Joseph Needham writes that the earliest confirmed use of gimbals in Europe is the 9th century recipe book Little Key of Painting and English antiquary and book collector Thomas Phillipps's Mappae clavicula, which mentioned a vase surrounded by rings which allowed it to be undisturbed when in a rolling motion. Needham and Belgian-born American chemist and historian of science George Sarton both write that an Arabic translation—dated to roughly the era of Al-Ma'mun —of an ancient Greek work now lost by 3rd-century BC Greek engineer, physicist, and writer Philo of Byzantium contains a description of gimbals used to support an inkpot that could wet a pen on any of its sides, yet Needham suspects Arabic interpolation and doubts total authenticity, while Belgian-born American chemist and historian of science George Sarton asserts that for the most part the Arabic translation is faithful to Philo's lost original, hence Philo should be credited with the invention of the gimbal. Around 180 AD, the Han Dynasty inventor, craftsman and mechanical engineer Ding Huan — who also created a rotary fan and zoetrope lamp—invented a 'Perfume Burner for use among Cushions', or 'Bedclothes Censer'. This incense burner had a series of metal rings which could be moved in any direction while the burner in the middle remained constantly level. This is the first clear reference in China of the gimbal, although there is a hint in the writing of the Western Han Dynasty Chinese poet, writer, and musician Sima Xiangru that this device existed in the 2nd century BC. The gimbal incense burner is mentioned in subsequent dynasties, while silverwork specimens of gimbal incense burners from the Tang Dynasty still exist. In the Liang Dynasty there is mention of gimbals used in hinges for doors and windows, while an unnamed artisan presented a warming stove to Empress Wu Zetian in 692 which employed gimbals to keep it constantly balanced.
• Go : Although ancient Chinese legend has it that the mythological ruler Yao came down to earth from the Heavens around 2200 BC carrying with him a go board and stone player's pieces, it is known from existing literature that the go board game existed since at least the 10th century BC during the Zhou Dynasty and was even mentioned in writing by ancient Chinese philosophers Confucius and Mencius, although the latter two had a slightly negative opinion of it.
• Goldfish domestication: In ancient China, various species of carp were domesticated and have been reared as food fish for thousands of years. Some of these normally gray or silver species have a tendency to produce red, orange or yellow color mutations; this was first recorded in the Jin Dynasty. During the Tang Dynasty, it was popular to raise carp in ornamental ponds and watergardens. A natural genetic mutation produced gold rather than silver coloration. People began to breed the gold variety instead of the silver variety, keeping them in ponds or other bodies of water. Goldfish were introduced into Europe during the 17th century, and into North America in the 19th century.

  H

• Hand cannon: The bronze Yuan Dynasty gun from Heilongjiang which dates to about 1288 is a little over 0.3 m in length and weighs 3.6 kg. It has a small touch hole for ignition and an even bore except for the bulbous enlargement around the explosion chamber. It was excavated with a bronze pan, mirror and vase.
• Hand grenade, explosive: Before explosive grenades, incendiary grenades were used by the Eastern Roman Empire, incorporating Greek fire. Early prototypes to the modern explosive grenade, according to British scientist and sinologist Joseph Needham, appear in the military book, Wujing Zongyao, by 1044. During the Song Dynasty, weapons known as Zhen Tian Lei were created when Chinese soldiers packed gunpowder into ceramic or metal containers and thrown at the enemy. Further descriptions and illustrations of early Chinese hand grenades are provided in the Huolongjing.
• Hand gun: An early known depiction of a hand gun is a sculpture from a cave in Sichuan, dating to 1128, that portrays a figure carrying a vase-shaped bombard, firing flames and a cannonball. However, the oldest existent archaeological discovery of a metal barrel handgun is the Heilongjiang hand cannon from the Chinese Heilongjiang excavation, dated to 1288. Handheld firearms first appeared in China where gunpowder was first developed. They were hand cannons. By the 14th century, they existed in Europe as well. The first handheld firearms that might better be called "pistols" were made as early as the 15th century, but their creator is unknown.
• Handscroll: The handscroll originated from ancient Chinese text documents. From the Spring and Autumn period through the Han dynasty, bamboo or wooden slips were bound and used to write texts on. During the Eastern Han period, the use of paper and silk as handscrolls became more common. The handscroll was the one of the main formats for texts up until the Tang dynasty. Since the Three Kingdoms, the handscroll became a standard form for mounting artwork. New styles were developed over time.
• Hanging scroll: Hanging scrolls originated in their earliest form from literature and other texts written on bamboo strips and silk banners in ancient China. The earliest hanging scrolls are related to and developed from silk banners in early Chinese history. These banners were long and hung vertically on walls. Such silk banners and hanging scroll paintings were found at Mawangdui dating back to the Han Dynasty. By the time of the Tang Dynasty, the aesthetic and structural objectives for hanging scrolls were summarized, which are still followed to this day. During the early Song Dynasty, the scrolls became well suited to the art styles of the artists, consequently hanging scrolls were made in many different sizes and proportions.
• Heavy moldboard iron plow: Although use of the simple wooden ard in China must have preceded it, the earliest discovered Chinese iron plows date to roughly 500 BC, during the Zhou Dynasty and were flat, V-shaped, and mounted on wooden poles and handles. By the 3rd century BC, improved iron casting techniques led to the development of the heavy moldboard plow, seen in Han Dynasty artwork such as tomb carved bricks. The moldboard allowed the Chinese to turn farm soil without clogging the plowshare with dirt, which was flung off the wheelbarrow via slanted wings on both sides. While the frame of excavated plowshares dating to the Warring States period were made mostly of perishable wood except for the iron blade, the frame of excavated plowshares dating to the Han Dynasty were made entirely of solid iron with the moldboard attached to the top to turn the soil.
• Helicopter rotor and bamboo-copter: The use of a helicopter rotor for vertical flight has existed since 400 BC in the form of the bamboo-copter, an ancient Chinese toy. The bamboo-copter is spun by rolling a stick attached to a rotor. The spinning creates lift, and the toy flies when released. The Jin dynasty philosopher and politician Ge Hong's book the Baopuzi, written around 317, describes the apocryphal use of a possible rotor in aircraft: "Some have made flying cars with wood from the inner part of the jujube tree, using ox-leather fastened to returning blades so as to set the machine in motion." British scientist and sinologist Joseph Needham concludes that this is a description of a helicopter top, because "'returning blades' can hardly mean anything else, especially in close association with a belt or strap." The Italian polymath Leonardo da Vinci designed a machine known as an "aerial screw" with a rotor based on a water screw. The Russian polymath Mikhail Lomonosov developed a rotor based on the Chinese toy. The French naturalist Christian de Launoy constructed his rotor out of turkey feathers. The English aerospace engineer and inventor Sir George Cayley, inspired by the Chinese top in his childhood, created multiple vertical flight machines with rotors made of tin sheets. French engineer and inventor Alphonse Pénaud would later develop coaxial rotor model helicopter toys in 1870, powered by rubber bands. One of these toys, given as a gift by their father, would inspire the American inventors the Wright brothers to pursue the dream of modern flight.
• Hell money: Hell money is a form of joss paper printed to resemble fake legal tender bank notes. The notes are not an official form of recognized currency or legal tender since their sole intended purpose is to be offered as burnt offerings to the deceased as a superstitious solution to resolve their ancestors financial problems. This custom has been practiced by the modern Chinese and across East Asia since the late 19th century.
• Hill censer: The hill censer, a vessel used for burning incense, dates to the Han Dynasty. The censers are shaped like mountains and were used for religious rituals. The shape of the hill censer acts as a visual aid for envisioning the sacred mountains that were said to have been inhabited by Taoist immortals. Hill censers were originally designed for Taoist rituals, but were later used by Chinese Buddhists. Hill censers often include carvings of wilds animals and birds. Some censers depict waves at the foundation of the vessel, said to be the waves of the East China Sea. A hole at the top of the censer releases the smoke of the incense.
• Horse collar: A significant improvement of the ancient breast harness was the horse collar. The horse collar was depicted in a Northern Wei mural at Dunhuang, China, dated 477–499; the latter artwork does not feature the essential collar cushion behind the cross bar, though, while a later Tang Dynasty mural of about 851 accurately displays the cushioned collar behind the cross bar. An earlier painting of the Sui Dynasty accurately depicted the horse collar as it is seen today, yet the illustration shows its use on a camel instead of a horse.
• Horse harness, : Throughout the ancient world, the 'throat-and-girth' harness was used for harnessing horses that pulled carts; this greatly limited a horse's ability to exert itself as it was constantly choked at the neck. A painting on a lacquerware box from the State of Chu, dated to the 4th century BC, shows the first known use of a yoke placed across a horses's chest, with traces connecting to the chariot shaft. The hard yoke across the horse's chest was gradually replaced by a breast strap, which was often depicted in carved reliefs and stamped bricks of tombs from the Han Dynasty. Eventually, the horse collar was invented in China, at least by the 5th century.
• Hygrometer: Prototype hygrometers were devised and developed in the hills during the Western Han dynasty in Ancient China to elucidate mechanisms of long-range meteorological fluctuations. The Chinese used a bar of charcoal and a lump of earth: its dry weight was taken and then compared with its damp weight after being exposed in the air. The differences in weight was used to tally the humidity level. Other techniques were applied using mass to measure humidity such as when the air was dry, the bar of charcoal would be light while the air was humid, the bar of charcoal would be heavy. By hanging a lump of earth and a bar of charcoal on the two ends of a staff separately and adding a fixated lifting string on the middle point to make the staff horizontal in dry air, an ancient hygrometer was made.

  I

• Incense: According to biological anthropologist and ecologist David Michael Stoddart of the University of Tasmania, "the earliest recorded use of incense comes from the Chinese who burned various herbs and plant products." Sandalwood, casia, styrax, and cinnamon were used by the Chinese.
• India ink: Although named after carbonaceous pigment materials originating from India, Indian ink first appeared in China; some scholars say it was made as far back as the 3rd millennium BC, while others state it was perhaps not invented until the Wei Dynasty.
• Inkstone: The inkstone is a stone mortar used in Chinese calligraphy for grinding and mixing ink. Other than stone, inkstones are also manufactured from clay, bronze, iron, and porcelain. The device evolved from a rubbing tool used for rubbing dyes dating around 6000 to 7000 years ago. The earliest excavated inkstone is dated from the 3rd century BC, and was discovered in a tomb located in modern Yunmeng, Hubei. Usage of the inkstone was popularized during the Han Dynasty.
• Inoculation, treatment of smallpox: As Europeans would not begin to develop vaccinations for smallpox until 1796, historical Chinese records show that Chinese physicians have been inoculating against the same disease hundreds of years earlier. The British scientist, sinologist, and historian Joseph Needham states that a case of inoculation for smallpox may have existed in the late 10th century during the Song Dynasty, yet they rely on a book Zhongdou xinfa written in 1808 by Zhu Yiliang for this evidence. Wan Quan wrote the first clear reference to smallpox inoculation in his Douzhen xinfa of 1549. The process of inoculation was also vividly described by Yu Chang in his Yuyi cao, or Notes on My Judgment published in 1643, and Zhang Yan in his Zhongdou xinshu, or New book on smallpox inoculation in 1741. As written by Yu Tianchi in his Shadou jijie of 1727, which was based on Wang Zhangren's Douzhen jinjing lu of 1579, the technique of inoculation to avoid smallpox was not widespread in China until the reign of the Longqing Emperor during the Ming Dynasty.

  J

• Jacob's staff: The Song Dynasty polymath Shen Kuo, an antiquarian who pursued studies of archaeological finds, unearthed an ancient crossbow-like mechanism from a garden in Jiangsu which had on its stock a graduated sighting scale in minute measurements. He wrote that while viewing the whole of a mountain, the distance on the instrument was long, but while viewing a small part of the mountainside the distance was short due to the device's cross piece that had to be pushed further away from the observer's eye, with the graduation starting on the further end. He wrote that if one placed an arrow on the device and looked past its end, the degree of the mountain could be measured and thus its height could be calculated. Shen wrote that this was similar to mathematicians who used right-angled triangles to measure height. British scientist, sinologist, and historian Joseph Needham writes that what Shen had discovered was Jacob's staff, a surveying tool which was not known in Europe until the medieval French Jewish mathematician Levi ben Gerson described it in 1321.

• Jade burial suit: Burial suits made of jade existed in China during the Han Dynasty. Confirming ancient records about Han royalty and nobility buried in jade burial suits, archaeologists discovered in June 1968 the tombs and jade burial suits of Prince Liu Sheng and his wife Dou Wan in Hebei province. Liu's suit, in twelve flexible sections, comprised 2,690 square pieces of green jade with holes punctured in the four corners of each piece so that they could be sewn together with gold thread. The total weight of the gold thread used in his suit was 1,110 g. Princess Dou Wan's suit had 2,156 pieces of jade stitched together with 703 g of gold thread. Although jade burial outer wears and head masks appear in tombs of the early Han Dynasty, burial suits did not appear until the reign of Emperor Wen of Han, with the earliest being found in the Shizishan site. A total of 22 Western Han and 27 Eastern Han complete and partial jade burial suits were uncovered between 1954 and 1996. They are found mainly in Hebei, Shandong, Jiangsu and Henan, as well as at Yangjiawan, Dongyuan, Guangzhou, Mawangdui, Mianyang and Shizhaishan. The jade burial suit gradually disappeared when it was forbidden in 222 by Emperor Wen of Wei.
• Junk : The Chinese junk, derived from the Portuguese term junco, was a ship design unique to China, although many other ship types in China preceded it. Its origins could be seen in the latter half of the Han Dynasty, when ship designs began to have square-ended bows and sterns with flat bottom hulls. Unlike the earliest shipbuilding traditions of the Europe and South Asia, the junk had a carvel-shaped hull which lacked a keel and sternpost. Since there is no keel in the design, solid transverse bulkheads take the place of structural ribs. There are many theories about the evolution of the junk. One suggests that it developed from the double canoe, another claims that the bamboo raft used by Taiwanese aboriginals was the source of the junk. Records by Western travelers in China during the Song Dynasty mention that junks could support 130 sailors. The size of junks grew during the Ming Dynasty. By the 14th century, junks could carry 2,000 tons. Archaeological evidence of the large size of the junk has been proven by a sunken junk discovered in 1973 near the coast of Southeastern China.

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• Keel: Although the keel was a non-Chinese invention, the adjustable centerboard keel traces its roots to the medieval Chinese Song dynasty. Many Song Chinese junk ships had a ballasted and bilge keel that consisted of wooden beams bound together with iron hoops. Maritime technology and the technological know-how allowed Song dynasty ships to be used in naval warfare between the Southern Song Dynasty, the Jin Dynasty, and the Mongols.
• Kite: As written in the Mozi, the Zhou Dynasty philosopher, carpenter, and structural engineer Lu Ban from the State of Lu created a wooden bird that remained flying in the air for three days, essentially a kite; there is written evidence that kites were used as rescue signals when the city of Nanjing was besieged by Hou Jing during the reign of Emperor Wu of Liang, while similar accounts of kites used for military signalling are found in the Tang and Jin dynasties; kite flying as a pastime can be seen in painted murals of Dunhuang dating to the Northern Wei period, while descriptions of flying kites as a pastime have been found in Song and Ming texts.

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• Land mine: Textual evidence suggests that the first use of a land mine in history was by a Song Dynasty brigadier general known as Lou Qianxia, who used an 'enormous bomb' to kill Mongol soldiers invading Guangxi in 1277. However, the first detailed description of the land mine was given in the Huolongjing text written by Ming Dynasty writer, military strategist and philosopher Jiao Yu and Liu Bowen during the late Yuan Dynasty and early Ming Dynasty. Jiao and Liu wrote that land mines were spherical, made of cast iron, and their fuses ignited by a mechanism tripped by enemy movement; although Jiao and Liu did not describe this trip mechanism in full detail, a later text of 1606 revealed that enemy movement released a pin that allowed hidden underground weights to fall and spin a chord around an axle that rotated a spinning wheel acting as a flint to spark a train of fuses.
• Land sailing: The usage of the land sail in China dates back to at least the Northern and Southern dynasties period. The earliest text describing the Chinese use of mounting masts and sails on large vehicles is the Book of the Golden Hall Master written by the Daoist scholar and crown prince Xiao Yi, who later became Emperor Yuan of Liang.
• Leeboard: To avoid leeward drift caused by the force of wind while sailing, the leeboard was invented; it was a board lowered onto the side of the ship opposite to the direction of the wind, helping the ship to stay upright and afloat even if the hull was breached. British writers Paul Johnstone and Sean McGrail state that an odd-looking second paddle on a bronze drum of the Dong Son culture may depict a leeboard in use as early as 300 BC. Leeboards may have been invented in China as early as the 8th century during the Tang Dynasty and are featured shortly after in 9th century engraved artwork found at the Borobudur monument built during the Sailendra dynasty of Central Java. Leeboards were first used in the West by the Dutch, during the 15th to 16th centuries.
• Liubo: The now defunct board game liubo for the most part remains an enigma for modern scholars still deciphering exactly how it was played; its association with both gambling and divination make it a unique game. The earliest two liubo game boards are found in the Zhongshan Tomb 3 at Shijiazhuang, Hebei. Similar finds, dating from the mid 4th century BC, are also found in the Chu Tomb 197 and 314 at Jiangling, Hubei. Liubo game boards have been found in several Western Han tombs; 1 wooden board at Jiangdu in Jiangsu; 1 wooden board in Tomb 8 at Fenghuangshan in Hubei; 1 lacquered set of liubo in Tomb 3 at Mawangdui Han tombs site in Hunan; 1 lacquered board in Tomb 1 at Dafentou in Yunnan; 1 bronze board at Xilin in Guangxi. During the Han Dynasty, an argument over the divination portents of the game as a result of a playing session led to a fight between a Western Han crown prince and Liu Xian, where the latter was killed in the scuffle which prompted his father Liu Pi, the King of Wu, to rebel against central Han authority in the Rebellion of the Seven States. The British sinologist and historian Michael Loewe asserts that the set pieces of liubo were symbolic of the forces of the Chinese Five Elements, wu xing.
• Louche: The louche was a mobile animal-drawn agricultural seed drill invented by the Chinese agronomist Zhao Guo, a Han official in charge of agricultural production during the reign of Han Wudi in the Han dynasty. According to the records of Political Commentator by the Eastern Han dynasty writer Cui Shi, the Louche consisted of three feet and thus was called three-legged Lou. The three legs had three ditch diggers under it used for sowing. The Louche was animal powered and was pulled by an ox and the leg of the Louche directly dug a ditch in the flattened soil, sowed the seeds, covered the seeds, and pressed the land flat at the same time. The machine was known for its utility and efficiency for serving several agricultural uses at the same time, while saving time and effort.

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• Magic mirrors: In about 800 AD, during the Tang Dynasty, a book entitled Record of Ancient Mirrors described the method of crafting solid bronze mirrors with decorations, written characters, or patterns on the reverse side that could cast these in a reflection on a nearby surface as light struck the front, polished side of the mirror; due to this seemingly transparent effect, they were called 'light-penetration mirrors' by the Chinese. Unfortunately, this Tang era book was lost over the centuries, but magic mirrors were described in the Dream Pool Essays by the Song dynasty polymath Shen Kuo, who owned three of them as a family heirloom. Perplexed as to how solid metal could be transparent, Shen guessed that some sort of quenching technique was used to produce tiny wrinkles on the face of the mirror too small to be observed by the eye. Although his explanation of different cooling rates was incorrect, he was right to suggest the surface contained minute variations which the naked eye could not detect; these mirrors also had no transparent quality at all, as discovered by British scientist and mathematician William Bragg in 1932.
• Mahjong: The Dutch journalist and writer Jelte Rep writes that the gambling game of mahjong, which employs a set of over a hundred tiles, was first invented in 1846 by Zhen Yumen, a Qing Dynasty diplomatic official from Ningbo. However, Rep traces the origins of the game to a card game of the Tang Dynasty which used thirty-two wood or ivory pieces in the shape of cards. This evolved into the forty-card game of madiao during the Ming Dynasty, which had four suits of cards instead of the three found in modern mahjong.
• Match, non-friction: The earliest type of match for lighting fire was made in China by 577 AD, invented by Northern Qi court ladies as they desperately looked for materials to light fires for cooking and heating as enemy troops of Northern Zhou and the Chen Dynasty besieged their city from outside. Early matches in China were designed to be lit by an existing flame and carried to light another fire. They were pinewood sticks impregnated with sulfur and needed only a slight touch from a flame to light. This was written in the Records of the Unworldly and Strange by Tao Gu in 950.
• Mechanical theater : The inventors of the field mill mentioned above, Xie Fei and Wei Mengbian of the Later Zhao, also invented an intricate mechanical theater mounted on a carriage, its figures operated by motive power. From 335 to 345 AD, they worked at the court of the ethnic-Jie emperor Shi Hu. The vehicle they crafted was a four-wheeled and 6 m long carriage that was about 3 m wide. On it rested a large golden Buddha statue with a Daoist statue continually rubbing his front with his mechanical hand. The Buddha was also surrounded by ten wooden Daoists who rotated around him in a circuit, periodically bowing to him, saluting him, and throwing incense into a censer. Above the Buddha were nine dragon-headed faucets which spouted water. Like the field mill and the pounding cart of these two inventors, when the carriage halted, so did all of its moving components of mechanical statues and spouting faucets.
• Mechanical cup-bearers and wine-pourers on automatic-traveling boats: The mechanical engineer Huang Gun served the court of Emperor Yang Di and wrote the book Shuishi Tujing on his inventions, which his colleague Du Bao enlarged and commented on. He constructed seven small boats, called 'wine boats', that were as large as 3 m long and 1.8 m wide which supported a number of mechanical figures of wooden statues called 'hydraulic elegances', each about 0.6 m tall, some of them animals but most in human form consisting of singing girls, musicians playing actual instruments, dancers and tumblers, oarsmen busy rowing, cup-bearers, and wine-pourers all moving simultaneously as if alive. These boats were set to travel at timed intervals along circuits made of winding stone channels and canals in palace courtyards and gardens, where guests would gather for special occasions. The cup-bearer stood at the bow of each ship and beside him the wine-pourer; when the ship made automatically timed periodic stops where guests were seated, the cup-bearer automatically stretched out his arm with a full cup of wine. When the guest was done emptying his cup, he placed the cup back into the figure's hands; the latter then waited as the wine-pourer filled a second cup to be emptied. When this guest had been served, the wine boat automatically moved onwards to the next stop. The British sinologist, scientist, and historian Joseph Needham speculates that the 'wine boats' may have been paddle-wheel-driven. Another paddle wheel ship was commanded by Wang Zhen'e and described in his biographies dated from the Liu Song Dynasty. side from the partial remains of the Shuishi Tujing, an account of these 'wine boats' was also preserved by Huang Gun's contemporary Yan Shigu.
• Modular system of architecture, eight standard grades: Although other texts preceded it, such as the 'National Building Law' of the Tang Dynasty which was partially preserved in other texts, the Yingzao Fashi published in 1103 by the Song Dynasty scholar-official Li Jie is the oldest known Chinese architectural treatise that has survived fully intact. It contains descriptions and illustrations detailing the cai fen system of eight standard dimensions for module components of timber architecture and structural carpentry. The eight standard grades of module timber components in the Yingzao Fashi, with grade I being the largest and grade VIII the smallest, were used to determine the ultimate proportions and scale of a building as a whole, as all timber hall types—palaces, mansions, ordinary houses, and pavilions—were hierarchically categorized along the lines of which cai fen grade was employed. For example, palace type buildings used only grades I through V, while mansion type buildings never used components larger than grade III and no less than grade VI. In this system of structural carpentry, the smallest grade of VIII is represented by one cai; one cai is equal to the modern equivalent of 15 cm, while one cai is also divided into fifteen fen.
• Multistage rocket: Although there is still some ambiguity as to whether the earliest rockets of the 13th century were first developed in Europe, the Middle East or China, during the Yuan Dynasty the term 'fire arrow' once implied to mean incendiary arrows during the Tang Dynasty was then used to describe the true rocket, producing a headache, as Needham says, for historians; the Huolongjing written by military officer Jiao Yu and the Song dynasty Chinese philosopher and politician Liu Bowen during the early Ming Dynasty described several types of rockets, one of them being a multistage rocket known as the 'huo long chu shui' or 'fire dragon issuing from the water' which, despite its name, was not launched from beneath the water from a primitive submarine but rather at near water-level maintaining a flat trajectory; defined as a two-stage rocket, it employed booster rockets that, when about to burn out of use, ignited a swarm of smaller rocket arrows fired from the front end of the missile shaped as a dragon's mouth.
• Multiple-tube seed drill: The wooden seed drill existed in China by the 3rd century BC, while the multiple-tube iron seed drill was first invented in China by the 2nd century BC, during the Han Dynasty. The seed drill allowed for greater speed and regulation of distributing seeds in lined rows of crops instead of casting them out onto the farm field.

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• Natural gas as a fuel: On tomb brick reliefs of Sichuan province dating to the Han Dynasty, scenes of borehole drilling for mining projects are shown. They show towering derricks lifting liquid brine through bamboo pipes to the surface so that the brine could be distilled in evaporation pans over the heat of furnaces and produce salt. The furnaces were heated by natural gas brought by airtight jointed bamboo pipes for miles to towns and villages, yet gas brought up from below the surface could cause an explosion if it was not properly mixed with oxygen first, so the Han dynasty Chinese built underground carburetor chambers and siphoned some of the gas off with exhaust pipes.
• Naval mine: The Huolongjing military manuscript written by Ming dynasty military writer, strategist, and philosopher Jiao Yu and Chinese military strategist, philosopher, statesman and poet Liu Bowen also describes naval mines used at sea or on rivers and lakes; made of wrought iron and enclosed in an ox bladder, it was a timed device in that a burning joss sticks floating above the mine determined when the fuse was to be ignited; the text explicitly mentions that without air and doused in water the fuse would not burn, so the fuse was protected by a long waterproof tube made out of goat's intestine; a later model shown in Ming Chinese scientist and encyclopedist Song Yingxing's encyclopedia of 1637 shows the ox bladder replaced with a lacquered leather bag while the mine is ignited by a rip cord pulled from the shore to rotate a flint-and-steel firing mechanism.
• Nickel silver: Nickel silver was first known and used in China during the modern Manchu-led Qing dynasty. During the Qing Dynasty, it was "smuggled into various parts of the East Indies", despite a government ban on the export of nickel silver.

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• Open-spandrel segmental arch bridge: The earliest known fully stone open-spandrel segmental arch bridge is the Zhaozhou Bridge in southern Hebei province, China, completed in 605 by the Sui Dynasty engineer Li Chun. The bridge span is 37.5 m and the structure relatively light in weight due to the four semi-circular arch spandrels which allow for additional flood waters to pass through. Other Chinese bridges would be influenced by this design, such as the open-spandrel Yongtong Bridge of Zhaoxian, Hebei built in 1130, and the simple segmental arch Lugou Bridge built in 1698. The latter, located just west of Beijing and features eleven segmental arches.
• Oil refining: The Chinese were among the first civilizations to refine oil. During 512 A.D. and 518 A.D., in the late Northern Wei Dynasty, the Chinese geographer, politician, and writer Li Daoyuan introduced the process of refining oil intro various lubricants in his famous work Commentary on the Water Classic. During the first century AD, the Chinese were among the first peoples to refine oil for use as an energy source. During the Northern Song Dynasty, a workshop called the "Fierce Oil Workshop", was established in the city of Kaifeng to produce refined oil for the Song military as a weapon. The troops would then fill the iron cans with refined oil and threw them toward the enemy troops, causing a fire – effectively the world's first "fire bomb" The workshop was one of the world's earliest oil refining factories where thousands of people worked to produce Chinese oil powered weaponry.
• Oil well: The earliest record of an oil well dates from 347 AD in China. Petroleum was used in ancient China for "lighting, as a lubricant for cart axles and the bearings of water-powered drop hammers, as a source of carbon for inksticks, and as a medical remedy for sores on humans and mange in animals." The earliest illustrated depiction of an oil well dates to 1762 AD.

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• Paper cup and paper napkin: Paper cups have been documented in imperial China, alongside paper napkins. Paper cups were known as chih pei and were used for the serving of tea. They were constructed in different sizes and colors, and were adorned with decorative designs. Paper napkins, or chih pha, accompanied tea cups and were folded into squares. Textual evidence of paper cups and napkins appears in a description of the possessions of the Yu family, from the city of Hangzhou.
• Paper lantern: The paper lantern is a lighting device made of paper. Early lanterns in China were constructed with silk, paper, or animal skin with frames made of bamboo or wood. One of the earliest descriptions of paper lanterns is found in records from Khotan, which describe a "mounting lantern" made of white paper.
• Percussion drilling: Ancient China's principal drilling technique, percussive drilling, was invented during the Han dynasty. The process involved two to six men jumping on a level at rhythmic intervals to raise a heavy iron bit attached to long bamboo cables from a bamboo derrick. Utilizing cast iron bits and tools constructed of bamboo, the early Chinese were able to percussion drilling to drill holes to a depth of 3000 ft. The construction of percussion drilling machines took more than two to three generations of workers. The cable tool drilling machines developed by the early Chinese involved raising and dropping a heavy string of drilling tools to crush through rocks into diminutive fragments. In addition, the Chinese also used a cutting head secured to bamboo rods to drill to depths of 915 m. The raising and dropping of the bamboo drill strings allowed the drilling machine penetrate less denser and unconsolidated rock formations.
• Petroleum as fuel: The use of petroleum dates back to ancient China more than 2000 years ago. In I Ching, one of the earliest Chinese writings cites the use of oil in its raw state without refining was first discovered, extracted, and used in China in the first century BCE. In addition, the Chinese were the first to use petroleum as fuel as the early as the fourth century BCE.
• Pig iron: The earliest pig iron dates to the Zhou Dynasty. By the 5th century, archaeological evidence indicates that pig iron was melted to produce cast iron. In Europe, the process was not invented until the late medieval ages.
• Pinhole camera: The Greek philosopher Aristotle observed that the spaces between the leaves of trees acted as tiny pinholes which cast the image of a partial solar eclipse onto the ground. He also used a metal plate with a small pinhole to project an image of a solar eclipse onto the ground. The ancient Chinese philosopher Mozi —founder of Mohism during the establishment of the Hundred Schools of Thought—lived just before the time of Aristotle and it was in his Mojing that a pinhole camera was described. The Mojing stated that the "collecting place" was an empty hole "like the sun and moon depicted on the imperial flags," where an image could be inverted at an intersecting point which "affects the size of the image." The Mojing seems to be in line with the Epicurean theory of light traveling into the eye, since the Mojing states that the reflected light shining forth from an "illuminated person" becomes inverted when passing through the pinhole, i.e. "The bottom part of the man becomes the top part and the top part of the man becomes the bottom part." In his Book of Optics, Ibn al-Haytham wrote of his experimentation with camera obscura, which was followed by Song dynasty polymath Shen Kuo, the latter who alluded that the Tang Dynasty writer Duan Chengshi —in his Miscellaneous Morsels from Youyang—described inverted images of Chinese pagodas.
• Playing cards: The first reference to the card game in world history dates no later than the 9th century, when the Collection of Miscellanea at Duyang, written by Su E, described the Wei clan of the Tang Dynasty enjoying the "leaf game" in 868. The Yezi Gexi was a book on the card came which was allegedly written by a Tang woman and commented on by Chinese scholars in subsequent dynasties. In his Notes After Retirement, the Song Dynasty scholar Ouyang Xiu asserted that playing card games existed since the mid Tang Dynasty and associated this invention with the simultaneous evolution of the common Chinese writing medium from paper rolls to sheets of paper that could be printed. During the Ming Dynasty, characters from popular novels such as the Water Margin were widely featured on the faces of playing cards. By the 11th century playing cards could be found throughout the Asian continent. Playing cards were some of the first printed materials in Europe, appearing by the 14th century and produced by European woodblock printing before the innovation of the early modern printing press by German inventor, printer, publisher and blacksmith Johannes Gutenberg.
• Pontoon bridge: The Zhou Dynasty Chinese text of the Shi Jing records that King Wen of Zhou was the first to create a pontoon bridge in the 11th century BC. However, the British scientist, sinologist and historian Joseph Needham has pointed out that in all likely scenarios, the temporary pontoon bridge was invented during the 9th or 8th century BC in China, as this part was perhaps a later addition to the book. Although earlier temporary pontoon bridges had been made in China, the first secure and permanent ones in China came first during the Qin Dynasty. The later Song Dynasty Chinese statesman Cao Cheng once wrote a description of the early pontoon bridges in China. During the Eastern Han Dynasty, the Chinese created a very large pontoon bridge that spanned across the width of the Yellow River. There was also the rebellion of Gongsun Shu in 33 AD, where a large pontoon bridge with fortified posts was constructed across the Yangtze River, eventually broken through with ramming ships by official Han troops under Commander Cen Peng. During the late Eastern Han into the Three Kingdoms period, during the Battle of Chibi in 208 AD, the Prime Minister Cao Cao once linked the majority of his fleet together with iron chains, which proved to be a fatal mistake once he was thwarted with a fire attack by Sun Quan's fleet. The armies of Emperor Taizu of Song had a large pontoon bridge built across the Yangtze River in 974 in order to secure supply lines during the Song Dynasty's conquest of the Southern Tang.
• Porcelain: Although glazed ceramics existed beforehand, the author and historian Samuel Adrian M Adshead writes that the earliest type of vitrified, translucent ceramics that could be classified as true porcelain was not made until the Tang Dynasty. The archaeologist Nigel Wood of the University of Oxford states that true porcelain was manufactured in northern China from roughly the beginning of the Tang Dynasty in the 7th century, while true porcelain was not manufactured in southern China until about 300 years later, during the early 10th century.
• Pound lock: Indirect evidence suggests that pound locks may have been used in antiquity by the Ptolemaic Greeks and the Romans. In China, although the one gate canal flash lock existed beforehand, the two-gate pound lock was invented in 984 by an official of Huainan and engineer named Qiao Weiyo, during the early Song Dynasty, so that ships could safely travel along canal waterways having gated and segmented chambers where water levels could be regulated. The economic and transport benefits of this innovation were described by the polymath official and inventor Shen Kuo in his Dream Pool Essays.
• Puddling process: The puddling process was known the ancient Chinese during the Han Dynasty by the 1st century AD. The improvement of steelmaking processes improved the overall quality of steel by repeated forging, folding, and stacking of wrought iron from pig iron to make swords.
• Puppet theater, waterwheel-powered: The mechanical toys of Roman Egypt, especially the weight-driven puppet theater of Heron of Alexandria, are well known and discussed by historians such as Beck, Prou, and de Rochas d'Aiglun. In China, Zhang Heng wrote of plays with artificial fish and dragons, while a 6th-century text Xijing Zaji states that when Liu Bang came upon the treasury of the deceased Qin Shihuang in 206 BC, he found an entire mechanical orchestra of 1 m tall puppets dressed in silk and playing mouth organs, all powered by pulling ropes and blowing into tubes. As written in the Records of the Three Kingdoms, the engineer Ma Jun —already associated with the differential gear system of the south-pointing chariot—invented a mechanical theater powered by a rotating wooden waterwheel for the entertainment of Emperor Ming's court. With the waterwheel in motion, a number of mechanical puppets performed tricks, such as singing girls who played music and danced, other puppets who would beat drums and sound flutes when one puppet entered the scene, puppets dancing on balls, throwing swords, hanging upside down on rope ladders, etc. Other mechanical puppets dressed as government officials did tasks in their offices, puppets dressed as laborers did jobs of pounding and grinding, while others watched cockfighting, all moving simultaneously. Water-powered puppet theaters in the tradition of Ma Jun were created in later dynasties as well.

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• Raised-relief map: The raised-relief map may have existed in China since the 3rd century BC, if the accounts in the Records of the Grand Historian about Qin Shi Huang's tomb prove correct. It is known that Ma Yuan created a raised-relief map in 32 AD made out of rice, a type of map described in detail during the Tang Dynasty by Jiang Fang in his Essay on the Art of Constructing Mountains with Rice. Xie Zhuang of the Liu Song Dynasty created a 0.93 m² wooden raised-relief map of the empire which could be taken apart and pieced together like a giant jigsaw puzzle. The Song dynasty polymath Shen Kuo also created his own raised-relief map using sawdust, wood, beeswax, and wheat paste.
• Restaurant menu: During the early Song Dynasty, expanding trade and commerce brought money and people to the Song Chinese capital. The world's first restaurants sprang up and food like dumplings and noodles became available to the masses for a small price. Urban shopkeepers of the merchant middle class often had little time to eat at home, so they ventured out to eat at a variety of establishments such as temples, taverns, tea houses, food stalls, and restaurants which provided business for nearby brothels, singing-girl houses, and drama theaters; this along with traveling foreigners and Chinese who migrated to urban centers from regions with different cooking styles encouraged a demand for a variety of flavors served at urban restaurants, giving rise to the menu.
• Revolving bookcase: Revolving bookcases, known as zhuanluntang, have been documented in ancient China, and its invention is credited to Fu Xi in 544. Descriptions of revolving bookcases have been found in 8th- and 9th-century Chinese texts. Revolving bookcases were popularized in Buddhist monasteries during the Song Dynasty under the reign of Emperor Taizu, who ordered the mass printing of the Buddhist Tripiṭaka scriptures. An illustration of a revolving bookcase is depicted in Li Jie's architectural treatise the Yingzao Fashi.
• Rockets: The first gunpowder-powered rockets were developed during the Song dynasty and by the 13th century. The Chinese rocket technology was adopted by the Mongols and the invention was spread via the Mongol invasions to the Middle East and Europe in the mid-13th century. Rockets are recorded to have been used by the Song navy in a military exercise dated to 1245. Internal-combustion rocket propulsion is mentioned in a reference to 1264, recording that the 'ground-rat,' a type of firework, had frightened the Empress-Mother Gongsheng at a feast held in her honor by her son the Emperor Lizong. Subsequently, rockets are included in the military treatise Huolongjing, also known as the Fire Drake Manual, written by the Chinese artillery officer Jiao Yu in the mid-14th century. This text mentions the first known multistage rocket, the 'fire-dragon issuing from the water', thought to have been used by the Chinese navy.
• Rocket bombs, aerodynamic wings and explosive payloads: The first known rockets fitted with aerodynamic wings are described as the 'flying crows with magic fire' in the oldest strata of the Huolongjing, compiled by Jiao Yu and Liu Bowen during the early Ming Dynasty. The body of the rocket was shaped like a bird, packed with gunpowder, and made of bamboo laths forming a long basketwork frame that was reinforced with glued paper. A decorative head and tail were attached to the front and back ends, while the wings were nailed to the sides. Under each wing were two slanting rockets to propel the weapon; a main fuse was lit that ignited a fourfold fuse connected to each rocket and running through a drilled hole in the back of the bird. The book then claims that the rocket, after being launched high into the air and aimed at encampments or enemy boats, automatically produced an explosion upon impact that could be seen from considerably long distances.
• Rocket boosters: An illustration and description in the 14th century Chinese military treatise Huolongjing by the Ming dynasty military writer and philosopher Jiao Yu shows the oldest known multistage rocket with rocket boosters. The Huolongjing describes and illustrates the oldest known multistage rocket. It was a two-stage rocket that had carrier or booster rockets that would automatically ignite a number of smaller rocket arrows that were shot out of the front end of the missile, which was shaped like a dragon's head with an open mouth, before eventually burning out. This multi-stage rocket may be considered the ancestor to the modern YingJi-62 ASCM. The British scientist, sinologist, and historian Joseph Needham points out that the written material and depicted illustration of this rocket come from the oldest stratum of the Huolongjing, which can be dated roughly from 1300–1350 AD. Solid rocket boosters finds its roots in the Chinese invented fire arrows invented during the medieval Song dynasty more than 1000 years ago, using gunpowder as solid rocket propellants. Gunpowder was packed into a bamboo case cylinder and an opening was created on the cylinders other end. As the gunpowder was ignited, it began to burn rapidly and created large amounts of gas that would rush out to create thrust.
• Rocket launcher: The earliest rocket launchers documented in imperial China launched fire arrows with launchers constructed of wood, basketry, and bamboo tubes. The rocket launchers divided the fire arrows with frames meant to keep the arrows separated, and were capable of firing multiple arrow rockets at once. Textual evidence and illustrations of various early rocket launchers are found in the 11th-century Northern Song Dynasty text Wujing Zongyao. The Wujing Zongyao describes the "long serpent" rocket launcher, a rocket launcher constructed of wood and carried with a wheelbarrow, and the "hundred tiger" rocket launcher, a rocket launcher made of wood and capable of firing 320 rocket arrows. The text also describes a portable rocket arrow carrier consisting of a sling and a bamboo tube.
• Rotary fan, manual and water-powered: For purposes of air conditioning, the Han Dynasty craftsman and mechanical engineer Ding Huan invented a manually operated rotary fan with seven wheels that measured 3 m in diameter; in the 8th century, during the Tang Dynasty, the Chinese applied hydraulic power to rotate the fan wheels for air conditioning, while the rotary fan became even more common during the Song Dynasty. The first rotary fan used in Europe was for mine ventilation during the 16th century, as illustrated by German mineralogist and metallurgist Georg Agricola.
• Rudder, stern-mounted and vertical axial: Lawrence V. Mott, who defines a steering oar as a rudder, states the ancient Egyptian use of stern-mounted rudders can be traced back to the 6th dynasty. Mott states that the method of attachment for rudders in the Arab, Chinese, and European worlds differed from each other, leading him to doubt the spread of the Chinese system of attachment by socket-and-jaws or block and tackle. In regards to Mott's definition of a steering oar as a rudder, Joseph Needham, Richard Lefebvre des Noëttes, K.S. Tom, Chung Chee Kit, S.A.M. Adshead, Paul Johnstone and Sean McGrail state that a steering oar is not a rudder; the steering oar has the capacity to interfere with handling of the sails while it was fit more for small vessels on narrow, rapid-water transport; the rudder did not disturb the handling of the sails, took less energy to operate by its helmsman, was better fit for larger vessels on ocean-going travel, and first appeared in China. Leo Block writes of the use of the steering oar in the ancient Mediterranean world : "A single sail tends to turn a vessel in an upwind or downwind direction, and rudder action is required to steer a straight course. A steering oar was used at this time because the rudder had not yet been invented. With a single sail, a frequent movement of the steering oar was required to steer a straight course; this slowed down the vessel because a steering oar course correction acts like a break." The oldest depicted rudders at the back of a ship, without the use of oars or a steering oar, comes from several ceramic models of Chinese ships made during both the Western and Eastern eras of the Han Dynasty. According to the scholars Zhang Zunyan and Vassilios Christides, there is literary evidence to suggest that the axial stern rudder existed in China since the 1st century BC, while Gang Deng asserts the first reference was made in the Huainanzi of the 2nd century BC, and K.S. Tom says the first clear reference dates to the 5th century AD. However, K.S. Tom points to the fact that all Chinese pottery models of ships before this Guangzhou tomb model show steering oars instead of a rudder, which he states is strong evidence for the rudder's invention only by the 1st century AD. Jacques Gernet states that while the Chinese had invented the rudder in the 1st century AD, it was not completely fixed to the sternpost of Chinese ships until the end of the 4th century. The bulkhead ship design of the junk, which appeared roughly the same time as the rudder, provided the essential vertical components for the hinged axial rudder. Deng points out that an Eastern Han model distinctly shows a rudder located in its own separate cabin, suggesting that helmsmanship had already become an established profession. Following the invention of the balanced rudder pivoted on an axis, Tom and Deng state that the Chinese then innovated the fenestrated rudder by the Song Dynasty, with deliberate puncturing and boring out of holes in shapes such as diamonds, which, according to Tom, made the rudder "easier to steer, reduced turbulence drag, did not affect efficiency and was hydrodynamically sound."

  S

• Salt well: The Chinese have been using brine wells and a form of salt solution mining as part of their civilization for more than 2000 years. The first recorded salt well in China was dug in the Sichuan province around 2,250 years ago. This was the first time that ancient water well technology was applied successfully for the exploitation of salt, and marked the beginning of Sichuan's salt drilling industry. Shaft wells were sunk as early as 220 BC in the Sichuan and Yunnan provinces. By 1035 AD, Chinese in the Sichuan area were using percussion drilling to recover deep brines, a technique that would not be introduced to Europe and the Western World for another 600 to 800 years. Medieval and modern European travelers to China between 1400 and 1700 AD reported salt and natural gas production from dense networks of brine wells. Archaeological evidence of Song dynasty salt drilling tools used are kept and displayed in the Zigong Salt Industry Museum. Many of the wells were sunk deeper than 450 m and at least one well was more than 1000 meters deep. The medieval Venetian traveler to China Marco Polo reported an annual production in a single province of more than 30,000 tonnes of brine during his time there. According to Salt: A World History, a Qing Dynasty well, also located in Zigong, "continued down to 3,300 feet making it at the time the deepest drilled well in the world."
• Seismometer: The Chinese polymath and inventor Zhang Heng of the Han Dynasty invented the first seismometer in 132, a large metal urn-shaped instrument which employed either a suspended pendulum or inverted pendulum acting on inertia to dislodge a metal ball by a lever trip device; this ball would fall out of dragon-shaped metal mouth into the corresponding metal toad mouth indicating the exact cardinal direction of where a distant earthquake had occurred in order for the state to send swift aid and relief to the affected regions; several subsequent recreations of his device were employed by Chinese states up until the Tang Dynasty, when use of the device fell into obscurity, a fact noted even by the writer Zhou Mi around 1290, during the Yuan Dynasty.
• Sky lantern: The Chinese military strategist, politician, writer, and inventor Zhuge Liang of the Three Kingdoms era is credited with its invention, and reportedly used it during military campaigns. According to the British scientist, historian, and sinologist Joseph Needham, sky lanterns have been used in China since the 3rd century BC. In 1783, the French entrepreneurs and inventors Joseph-Michel and Jacques-Etienne Montgolfier took part in the first modern manned hot air balloon flight.
• Snow gauge: The first use of snow gauges were precipitation gauges that was widely used in 1247 during the Southern Song dynasty to gather meteorological data. The Song Chinese mathematician and inventor Qin Jiushao records the use of gathering rain and snowfall measurements in the Song mathematical treatise Mathematical Treatise in Nine Sections. The book discusses the use of large conical or barrel-shaped snow gauges made from bamboo situated in mountain passes and uplands which are speculated to be first referenced to snow measurement.
• Solid-propellant rocket: The medieval Song dynasty Chinese invented the solid-propellant rocket at a time when bows, arrows, and catapult-based projectile launchers were state of the art military technology in medieval Europe. Illustrations and descriptions in the 14th century Chinese military treatise Huolongjing by the Ming dynasty military writer and philosopher Jiao Yu confirm that the Chinese in 1232 used proto-solid propellant rockets then known as "fire arrows" to drive back the Mongols during the Siege of Kaifeng. Each arrow took a primitive form of a simple, solid-propellant rocket tube that was filled gunpowder. One open end allowed the gas to escape and was attached to a long stick that acted as a guidance system for flight direction control.
• South-pointing chariot: Although the claim of Wei Dynasty mechanical engineer and statesman Ma Jun that the south-pointing chariot was first invented by the mythological Yellow Emperor are dubious, his south-pointing chariot was successfully designed and tested in 255 AD with many later models recreated in subsequent dynasties; this device was a wheeled vehicle with differential gears that ensured a mounted wooden figurine would always point in the southern direction no matter how the vehicle turned, in essence a non-magnetic compass. The Book of Song written in the 6th century states that the device was successfully reinvented by the mathematician and astronomer Zu Chongzhi during the Liu Song Dynasty. The Japanese historical text Nihon Shoki, compiled by 720, states that the device was crafted and presented as a gift to Emperor Tenji on two different occasions by the Tang Dynasty Chinese Buddhist monks Zhi Yu and Zhi You. The wheeled vehicle device was described in intricate detail in the historical text covering the Song Dynasty, i.e. the Song Shi ; for example, it revealed the number of gear teeth on each mechanical gear wheel, the diameter of each gear wheel, and how these gear wheels were properly positioned.
• Soybean oil: Chinese records dating prior to 2000 BC mention the use of cultivated soybeans to produce edible soy oil. Ancient Chinese literature reveals that soybeans were extensively cultivated and highly valued as a use for the soybean oil production process before written records were kept.
• Soy sauce: Soy sauce in its current form was created about 2,200 years ago during the Western Han dynasty and was soon spread throughout East and Southeast Asia where it is used in cooking and as a condiment. The condiment considered almost as old as soy paste — a type of fermented paste obtained from soybeans — which had appeared during the Western Han dynasty and was listed in the bamboo slips found in the archaeological site Mawangdui.
• Steel made from cast iron through oxygenation: The earliest known production of steel is a piece of ironware excavated from an archaeological site in Anatolia and is about 4,000 years old. Other ancient steel comes from East Africa, dating back to 1400 BC. In the 4th century BC steel weapons like the Falcata were produced in the Iberian Peninsula, while Noric steel was used by the Roman military. The Chinese, who had been producing cast iron from the late Spring and Autumn period, produced steel by the 2nd century BC through a process of decarburization, i.e. using bellows to pump large amounts of oxygen on to molten cast iron. This was first described in the Han Dynasty book Huainanzi, compiled by scholars under Prince Liu An. For steel, they used both quenching and tempering methods of heat treatment. Much later, the American inventor William Kelly brought four Chinese metallurgists to Eddyville, Kentucky in 1845, whose expertise in steelmaking influenced his ideas about air injection to reduce carbon content of iron; his invention anticipated the Bessemer process of English inventor Henry Bessemer.
• Stinkpot: The stinkpot was an earthenware incendiary weapon part filled with sulphur, gunpowder, nails, and shot, while the other part was filled with noxious materials designed to emanate a highly unpleasant and suffocating smell to its enemies when ignited. The weapon was used in the 19th century during the Qing Dynasty, where the British Admiral Sir William Robert Kennedy recorded the use of the stinkpot in 1856 during the Second Opium War in his book Hurrah for the Life of a Sailor – Fifty Years in the Royal Navy. These incendiary weapons were wrapped in calico bags and were then hoisted in a basket to the truck of the mast. When an enemy ship was alongside, one of the crew members would climb up the mast and primed the stinkpots with lighted joss sticks. The stinkpots were then launched onto the enemy deck by cutting the rope by which the basket had been hoisted. The ensuing noise, flying debris, and pungent smell would create, would cause the enemy crew sufficient confusion and blow them into disarray.
• Stir frying: Stir frying is a Chinese cooking technique used for preparing food in a wok. It originates from the Han Dynasty, but did not fully develop until the Song Dynasty. Although there are no surviving records of Han Dynasty stir frying, archaeological evidence of woks and the tendency to slice food thinly indicate that the technique was likely used for cooking. It was not until the Ming Dynasty that stir frying was popularized as primary cooking method of Chinese cuisine. Stir frying was brought to America by early Chinese immigrants, and has been used for non-Asian cuisines.
• Stirrup: There are authors who point out that it is unclear whether the stirrup was invented by northern nomads or the sedentary Chinese. Liu Han credited the invention of the stirrup to nomadic invaders of northern China. Archaeological evidence shows that horse riders in India had a small loop for a single toe to be inserted by roughly the 1st century AD. However, the first true depiction of the stirrup is featured on a Jin Dynasty Chinese tomb figurine dated 302 AD, yet this was a single stirrup and was perhaps used only for initially mounting the horse. The first validated depiction of a rider with a pair of saddle stirrups for both feet comes from a Jin Chinese tomb figurine dated 322. The first actual specimens of stirrups comes from a Chinese tomb in southern Manchuria that is dated 415. The stirrup was not widely used by Chinese cavalry until the 5th century. By the 6th century, the use of the stirrup had spread as far west as the Byzantine Empire, where both the stirrup and Celtic horseshoe were adopted.
• Suspension bridge using iron chains: Although there is evidence that many early cultures employed the use of suspension bridges with cabled ropes, the first written evidence of iron chain suspension bridges comes from a local history and topography of Yunnan written in the 15th century, which describes the repair of an iron chain bridge during the reign of the Yongle Emperor ; although it is questionable if Ming Dynasty Chinese claims that iron chain suspension bridges existed since the Han Dynasty, their existence in the 15th century predates that of anywhere else. K.S. Tom mentions this same repaired Ming suspension bridge described by Needham, but adds that recent research has revealed a document which lists the names of those who allegedly built an iron chain suspension bridge in Yunnan around the year 600 AD.

  T

• Tangram: The tangram is a dissection puzzle consisting of seven flat shapes, which are put together to form shapes. The objective of the puzzle is to form a specific shape using all seven pieces, which may not overlap. The game is reputed to have been invented in China during the Song Dynasty, and was popularized in Europe and United States during the 19th century. The word tangram is likely derived from two words, the Chinese word tang, referring to the medieval Chinese Tang Dynasty, and the Greek word gramma, a synonym of "graph".
• Tea: The tea plant is indigenous to western Yunnan; by the mid 2nd millennium BC, tea was being consumed in Yunnan for medicinal purposes. Tea drinking was already an established custom in the daily life in this area as shown by the Contract with a Slave, written by Wang Bao in 59 BC. This written record also reveals that tea was processed and used as a drink instead of a medicinal herb, emerged no later than the 1st century BC. Early Chinese tea culture began from the time of Han Dynasty to the Southern and Northern Dynasties when tea was widely used by Chinese gentry, but only took its initial shape during the Tang Dynasty.
• Teapot: The teapot was invented during the Yuan Dynasty, tea preparation in previous dynasties did not utilize a teapot. In the Tang Dynasty, a cauldron was used to boil grounded tea, which was served in bowls. Song Dynasty tea was made by pouring water boiled using a kettle into a bowl with finely ground tea leaves. A brush was then used to stir the tea. The innovation of the teapot, a vessel that steeps tea leaves in boiling water, occurs during the late Yuan dynasty. Written evidence of a teapot appears in the Yuan Dynasty text, Jiyuan Conghua, which describes a teapot that the author, Cai Shizhan, bought from the scholar Sun Daoming. By the Ming Dynasty, teapots were widespread in China.
• Thyroid hormones to treat goiters: In 239 BC, Master Lu's Spring and Autumn Annals stated that where water is too light, people suffer widespread baldness and goiter. It was not until the 1860 that French physician Gaspard Adolphe Chatin linked goiter with the lack of iodine in soil and water; iodine was discovered in the thyroid gland in 1896 by German chemist Eugen Baumann, while thyroid extract was used to treat patients in 1890. The Tang Dynasty physician Zhen Quan, in his Old and New Tried and Tested Prescriptions, stated that the thyroid glands taken from gelded rams were used to treat patients with goiter; the thyroid hormones could be swallowed in pill form or as a solid thyroid gland with the fat taken off. The Pharmacopoeia of the Heavenly Husbandman asserted that iodine-rich sargassum was used to treat goiter by the 1st century BC, a treatment later recorded in the Western World by Italian practrica Roger of Palermo in his Practica Chirurgiae of 1180 AD.
• Tofu: Although both popular tradition and Song Dynasty philosophers like Zhu Xi credit the invention of tofu—along with soymilk— to Liu An, a Han-Dynasty King of Huainan, no mention of tofu is found in the extant Huainanzi. The earliest known mention of tofu was made in Records of the Extraordinary, which reported that tofu was sold at Qingyang. The earliest explanation of how to make tofu is found in the Bencao Gangmu, written by the Ming dynasty polymath Li Shizhen. According to Liu Keshun, Liu An's process for making tofu was essentially the same as today.
• Toilet paper: Toilet paper was first mentioned by the Sui Chinese politician and artist Yan Zhitui in the year 589 during the Sui Dynasty, with full evidence of continual use in subsequent dynasties. By the mid 14th century during the Yuan Dynasty, it was written that ten million packages of 1,000 to 10,000 sheets of toilet paper were manufactured annually in Zhejiang province alone.
• Traction trebuchet: The earliest type of trebuchet catapult was the traction trebuchet, developed first in China by the 5th or 4th century BC, the beginning of the Warring States period ; to operate the trebuchet, a team of men pulled on ropes attached to the butt of the shorter segment of a long wooden beam separated by a rotating axle fixed to a base framework, allowing the longer segment of the beam to lunge forward and use its sling to hurl a missile; by the 9th century a hybrid of the traction and counterweight trebuchet, employing manpower and a pivoting weight, was used in the Middle East, Mediterranean Basin, and Northern Europe; by the 12th century, the full-fledged counterweight trebuchet was developed under the Ayyubid dynasty of Islamic Syria and Egypt and used in the Third Crusade; by the 13th century, the counterweight trebuchet found its way into Song Dynasty China via the Mongol invaders under Kublai Khan who used it in the Siege of Xiangyang.
• Trip hammer: The ancient Chinese used pestle and mortar to pound and decorticate grain, which was superseded by the treadle-operated tilt hammer perhaps during the Zhou Dynasty but first described in a Han Dynasty dictionary of 40 BC and soon after by the Han dynasty philosopher and writer Yang Xiong in his Fangyan dictionary written in 15 BC; the next stage in this evolution of grain-pounding devices was to apply hydraulic power, which the Han dynasty philosopher and writer Huan Tan mentioned in his Xinlun of 20 AD, although he also described trip hammers powered by the labor of horses, oxen, donkeys, and mules. After Huan Tan's book was written, numerous references to trip hammers powered by waterwheels were made in subsequent Chinese dynasties and in Medieval Europe by the 12th century. However, trip hammers were also attested by both literary and archaeological evidence in fairly widespread use in the Roman Empire by the 1st century AD.
• Tuned bells: The earliest complete set of tuned bells, sixteen in all, were found in Tomb 8 of Marquis Su of Jin at Qucun, southern Shanxi. The tomb has been dated by AMS radiocarbon techniques to 815–786 BC, during the period of the Zhou Dynasty. Of the sixty-four bronze bells found in the tomb of Marquis Yi of Zeng interred by 433 BC, forty-seven of them produce two notes with minor third intervals while sixteen produce two notes with major third intervals.
• Tung oil: The tung oil tree originates in southern China and was cultivated there for tung oil, but the date of cultivation remains unknown. During the Song Dynasty, tung oil was used for waterproofing on ships. Tung oil is etymologically derived from the Chinese tongyou. The earliest references for Chinese use of tung oil is in the writings of Confucius around 500 to 400 BC The Chinese have used tung oil, also known as China wood oil, for at least 2500 years for building waterproof boats and paper parasols, wood finishing, wood waterproofing, caulking, inks and paints.

  W

• Well drilling: The earliest record of well drilling dates from 347 AD in China. Petroleum was used in ancient China for "lighting, as a lubricant for cart axles and the bearings of water-powered drop hammers, as a source of carbon for inksticks, and as a medical remedy for sores on humans and mange in animals." In ancient China, deep well drilling machines were in the forefront of brine well production by the 1st century BC. The ancient Chinese developed advanced sinking wells and were the first civilization to use a well-drilling machine and to use bamboo well casings to keep the holes open.
• Well-field system: The well-field system was a Chinese land distribution method existing between the ninth century BC to around the end of the Warring States period. Its name comes from Chinese character , which means 'well' and looks like the # symbol; this character represents the theoretical appearance of land division: a square area of land was divided into nine identically-sized sections; the eight outer sections were privately cultivated by serfs and the center section was communally cultivated on behalf of the landowning aristocrat.
• Wheat gluten: The earliest description of wheat gluten comes from 6th century China. It was widely consumed by the Chinese as a substitute for meat, especially among adherents of Buddhism. The oldest reference to wheat gluten appears in the Qimin Yaoshu, a Chinese agricultural encyclopedia written by Jia Sixie in 535. The encyclopedia mentions noodles prepared from wheat gluten called bo duo. Wheat gluten was known as mian jin by the Song dynasty.
• Wheelbarrow: The earliest wheelbarrows with archaeological evidence in the form of a one-wheel cart come from 2nd century Han Dynasty Emperor Hui's tomb murals and brick tomb reliefs. The painted tomb mural of a man pushing a wheelbarrow was found in a tomb at Chengdu, Sichuan province, dated precisely to 118 CE. The stone carved relief of a man pushing a wheelbarrow was found in the tomb of Shen Fujun in Sichuan province, dated circa 150 CE. And then there is the story of the pious Dong Yuan pushing his father around in a single-wheel lu che barrow, depicted in a mural of the Wu Liang tomb-shrine of Shandong. However, there are even earlier accounts than this that date back to the 1st century BCE and 1st century CE. The 5th century Book of Later Han stated that the wife of the once poor and youthful imperial censor Bao Xuan helped him push a lu che back to his village during their feeble wedding ceremony, around 30 BCE. Later, during the Red Eyebrows Rebellion against Xin dynasty's Wang Mang, the official Zhao Xi saved his wife from danger by disguising himself and pushing her along in his lu che barrow, past a group of brigand rebels who questioned him, and allowed him to pass after he convinced them that his wife was terribly ill. The first recorded description of a wheelbarrow appears in Liu Xiang's work Lives of Famous Immortals. Liu describes the invention of the wheelbarrow by the legendary Chinese mythological figure Ko Yu, who builds a "Wooden ox".
• Winnowing machine, Rotary fan: Contemporary to the rotary air conditioning fan invented by Han dynasty mechanical engineer Ding Huan is a pottery tomb model of a crank-operated rotary winnowing fan from the Han Dynasty, used for separating chaff from grain. The winnowing fan was first described by the Tang Dynasty writer and linguist Yan Shigu, in his commentary on the Jijiupian dictionary written earlier in 40 BC by Shi Yu; it was also mentioned in a poem by the Song Dynasty artist Mei Yaochen in about 1060. The earliest known drawn illustration of the winnowing fan comes from the Book of Agriculture published in 1313 by Yuan dynasty inventor and politician Wang Zhen.
• Wok: The cast-iron Wok was invented in China during the Han dynasty. The round-bottomed cooking vessel is central to Chinese cooking and soon spread to other Asian culinary spheres due to its unique concave shape and ability to sear food at a fast pace.
• Wrapping paper and paper envelope: The use of wrapping paper is first documented in ancient China, where paper was invented in the 2nd century BC. In the Southern Song dynasty, monetary gifts were wrapped with paper, forming an envelope known as a chih pao. The wrapped gifts were distributed by the Chinese court to government officials. In the Chinese text Thien Kung Khai Wu, Sung Ying-Hsing states that the coarsest wrapping paper is manufactured with rice straws and bamboo fiber. Although the Hall brothers Rollie and Joyce Hall, founders of Hallmark Cards, did not invent gift wrapping, their innovations led to the development of modern gift wrapping. They helped to popularize the idea of decorative gift wrapping in the 20th century, and according to Joyce Hall, "the decorative gift-wrapping business was born the day Rollie placed those French envelope linings on top of that showcase."
• Wrought iron: During the Han dynasty, new iron smelting processes led to the manufacture of new wrought iron implements for use in agriculture, such as the multi-tube seed drill and iron plough. In addition to accidental lumps of low-carbon wrought iron produced by excessive injected air in ancient Chinese cupola furnaces. The ancient Chinese created wrought iron by using the finery forge at least by the 2nd century BC, the earliest specimens of cast and pig iron fined into wrought iron and steel found at the early Han Dynasty site at Tieshengguo. Pigott speculates that the finery forge existed in the previous Warring States period, due to the fact that there are wrought iron items from China dating to that period and there is no documented evidence of the bloomery ever being used in China. The fining process involved liquifying cast iron in a fining hearth and removing carbon from the molten cast iron through oxidation. Wagner writes that in addition to the Han Dynasty hearths believed to be fining hearths, there is also pictoral evidence of the fining hearth from a Shandong tomb mural dated 1st to 2nd century AD, as well as a hint of written evidence in the 4th century AD Daoist text Taiping Jing.

  X

• Xiangqi : The exact origins of the Chinese chess board game known as xiangqi are ambiguous. Historian David H. Li asserts that it was first invented by Han Xin, a renowned military general of the early Han Dynasty who fell victim to a purge instigated by Empress Lü Zhi. Li states that it was revived under a different, camouflaged name of xiangxi by Emperor Wu of Northern Zhou, which to this day has made the two terms synonymous and interchangeable for the same game.

  Z

• Zoetrope: British sinologist, scientist, and historian Joseph Needham described several ancient Chinese devices which he classified as "a variety of zoetrope", but his use of that term appears to have been very broad and unconventional. There is some evidence that a device capable of displaying moving images existed amongst the items of the treasury of the deceased Qin Shi Huang of the Qin Dynasty. A magician named Shao Ong who staged a seance for Emperor Wu of Han may have used such a device in his performance of 121 BC. Another device that Needham included in the same category comes, according to his dating, from the late Han Dynasty, when the engineer and artisan Ding Huan made a 'nine-storied hill-censer' around 180 AD. This featured figures of birds and other animals which moved when the lamp was lit; the convection of rising hot air currents caused the vanes at the top canopy of the lamp to spin, while the painted figures on paper attached to the side of the cylinder gave the impression that they were in movement.

  Modern (1912–present)

• Artemisinin, Tu Youyou, Project 523, Dihydroartemisinin.
• Carbon aerogel: In 2013, scientists at Zhejiang University broke the world record for the world's lightest substance, a carbon aerogel weighing in at 0.16 mg/cc.
• Electronic cigarette: Hon Lik, a Chinese pharmacist, is credited with the invention of the modern electronic cigarette. In 2003, he came up with the idea of using a piezoelectric ultrasound-emitting element to vaporise a pressurized jet of liquid containing nicotine diluted in a propylene glycol solution. This design produces a smoke-like vapour that can be inhaled and provides a vehicle for nicotine delivery into the bloodstream via the lungs. He also proposed using propylene glycol to dilute nicotine and placing it in a disposable plastic cartridge which serves as a liquid reservoir and mouthpiece.
• Non-invasive prenatal diagnostic testing for Down Syndrome: Previously, women underwent invasive testing such as amniocentesis or chorionic villus sampling. This new maternal blood test has the potential to reduce the number of women referred for invasive testing for Down syndrome by 98 percent. Developed by Chinese researchers in Hong Kong in 2008, this is hailed as a breakthrough.
• Passenger drone: The world's first passenger drone, a drone capable of carrying human cargo, Ehang 184 was unveiled at the Computer Electronics Show 2016 by Chinese entrepreneurs.
• Synthetic bovine insulin: In 1965, Chinese scientists synthesized bovine insulin, with the "same crystalline form and biological activities as natural insulin." The project began in 1958, and is considered one of the "first proteins ever synthesized in vitro."
• Stem cell educator therapy: Chinese and US researchers have produced remarkable results for this new treatment of obtaining stem cells from human cord blood to "re-educate" misbehaving immune cells. This result was published in the open-access journal BMC Medicine in January 2012, and offers hope for Type 1 diabetics and potentially may also be used to treat other auto-immune diseases if the approach lives up to early promise.

  Citations