The purpose of this article is to clarify the thought of Zhiyuan of the Song dynasty and Zhixu of the Ming dynasty, by comparing their commentaries on the Shoulengyan jing. Zhiyuan regards zhenxin (真心) as of greatest import from his weixin (唯心) principle, and often uses the concepts of zhen (真), wang (妄), zhong (中) in his commentary. Zhixu often uses kong (空) jia (仮), zhong (中), zhi (止), guan (観), xiu (修), xing (性), cang (蔵), tong (通), bie (別), yuan (円), and other Tiantai doctrines in his commentary.
