Newly Revised Materia Medica
Xin xiu ben cao,xylograph of 1899,based on a scroll of the Tang Dynasty.Imperially ordered and compiled by more than 20 scholars,headed by Su Jing,between 657 and 659.The government had the book distributed throughout the empire.It later spread to Japan and Korea.There remain a Tang manuscript scroll from Dunhuang and a fragment of a copy made in Japan in 731.(Collection of Library of China Academy of TCM)