Tean zu
Tean zu is one technique of torture that was used in ancient China. For interrogation of female suspects without threatening life, zánzhǐ was generally applied. It consisted of a set of six wooden sticks positioned around and between the fingers and connected by strings. Each time the prisoner refused to testify or confess, the string was pulled, slowly, agonizingly squeezing the fingers between the sticks until their bones were crushed. The Soviet KGB used a variant of this for crushing fingers or toes. The kia quen, a similar device applied exclusively to men, was used to crush the feet or ankles.
