Jiandi Dao
Jiandi Dao was a prefecture of ancient China located around today's Songpan region, in the east of Qingzang Plateau and northwest part of Sichuan province.
Jiandi Dao was founded by Qin after it conquered Shu in BC 316. Han Dynasty reestablished Jiandi Dao in the 6th year of Yuanding. Jiandi Dao was changed to Jiandi County and became a constitute part of Wenshan Jun in Jin Dynasty.
Di is an ancient large ethnic group lived in west China which is sometimes considered to be part of Qiang, called Diqiang. Dao in Qin and Han Dynasty is a kind of administrative unit where mainly settled by primitive tribes.
