By the late Kamakura period, Neo-Confucianism was spread as basic education for monks in training and others among gosan (Zen temples highly ranked by the government), and its theory was completed by annotations brought by the monk Ichinei ISSAN (Yining YISHAN), who visited Japan in 1299 from the Yuan Dynasty.
鎌倉時代後期までには、五山を中心として学僧等の基礎教養として広まり、正安元年（1299年）に来日した元(王朝)の僧一山一寧がもたらした注釈によって学理を完成した。