To gentlemen in Warring states,it is a key issue how to escape of disgrace from the king.Compared with Confucianism advocating moral subjectivity, Chuang Tzǔ held that each moral knowledge or judgement has a self identity and it isn't evident So, to guarantee the indepmental status of gentlemen, Chuang Tzǔ developed a skill of cultivation negating oneself to escape from the system of evaluation.