Abstract: “Knowing when enough is enough” and a series of categories formed around this concept constitute an important aspect of Yang Jians Gongfu Theory,a representative scholar of the Song Dynasty.The work of “Knowing when enough is enough” includes the apriority of “original mind” and the supreme good,the subjectivity of spontaneous and self stopping,and the orientation of the unity of mind and will.Everyone has an honest and good “original mind”,which is static and stops at all times,so just let it dominate by itself and give full play to the initiative and independence of “original mind”.Although the body is always quiet,it will be considered and used endlessly.This is the time of “Knowing when enough is enough” recognized by Yang Jian,which is the integration of silence and sense.Yang hopes to eliminate the constraint of “mind” on spirit and body,and realize the transcendence of moral subject by “enough is enough” without thinking and doing,and implement it into the daily practice of filial piety,fraternity and love.

Key words: Yang Jian, Knowing when enough is enough, Gen Gua, Ji, no thought,no action