In the Southern Sung Dynasty China when giso warehouse disappeared, it was thought that Chu His recommended constructing Shaso warehouse as a substitute for Giso, and the Shaso system was brought into Japan along with the doctrines of Zhu Xi (Neo-Confucianism).
義倉が衰退した南宋期の中国において朱熹によって義倉に代わるものとして提唱されたと言われており、日本に朱子学とともに伝来した。