It is said that Ruli 如理 was a disciple of Zhizhou 智周. But quite a few points are not definite with regard to Zhizhou's disciples. Therefore, I examined the relationship between Zhizhou and Ruli from Ruli's writings, etc. As a result, four features are found in Ruli's writings, especially in the Chengweishilun-shu-yiyan 成唯識論疏義演 (hereafter, Yiyan).
i) There are many references to Ji 基 and Zhizhou.
ii) There is no reference to Huizhao's 慧沼 disciples except Zhizhou.
iii) In Yiyan, there are many sentences similar to ones in the Chengweishilun yanmi 成唯識論演秘 (hereafter, Yanmi).
iv) Yiyan quoted from a variant text of the Chengweishilun-shuji 成唯識論述記 used in Yanmi.
From these points, it is probable that Ruli was a disciple of Zhizhou.
