Idiom stories of friends who never turn against each other.

Idiom stories of friends who never turn against each other.

During the Warring States Period, the philosopher Zhuangzi talked about Zi Si, Zi Xing, Gigi Lai and Zi Lai, saying, "A heart of inaction, a backbone of action, a bottom of death, knowing life and death as one, who can be friends?" The four of them smiled at each other and felt that they were rebellious and became good friends with each other.