disciple Amoahavajra, who came from India in 720. Ku kai (774-835),
well known as Ko Bo Dai Shi, went to China in 804, and received the
transmission of the doctrine from Hwui Kwo (Kei-ka), a, disciple of
Amoghavajra. In 806 he came back and propagated the faith almost all
over the country. For the detail see 'A Short History of the Twelve
Japanese Buddhist Sects' (chap. viii.), by Dr. Nanjo.

[FN#74] Sai-cho, the founder of the Japanese Ten Dai Sect, first
learned the doctrine of the Northern School of Zen under Gyo-hyo
(died in 797), and afterwards he pursued the study of the same faith
under Siao Jan in China. Therefore to oppose the propagation of Zen
is, for Ten Dai priests, as much as to oppose the founder of their
own sect.



2. The Introduction of the So-To School[FN#75] of Zen.


[FN#75] This school was started by Tsing-Yuen (Sei-gen), an eminent
disciple of the Sixth Patriarch, and completed by Tsing Shan (To-zan).


Although the Rin Zai school was, as mentioned above, established by
Ei-sai, yet he himself was not a pure Zen teacher, being a Ten Dai
scholar as well as an experienced practiser of Mantra. The first
establishment of Zen in its purest form was done by Do-gen, now known
as Jo Yo Dai Shi. Like Ei-sai, he was admitted into the Hi-yei
Monastery at an early age, and devoted himself to the study of the
Canon. As his scriptural knowledge increased, he was troubled by