The original text of Zhuangzi's "Distinguishing Fish in the Abyss" is as follows: Chuang Tzu went fishing on the isle of Yu River. The fish there are Chi, Mandrill, Kun, Peng and so on. One is that the fish in Tianchi eat in the South China Sea, and the other is that the fish in the isles chase in the North Sea. Chuang Tzu said to him,"What do you know about fish?" He said,"I am the only one who thinks of my heart as a fish. How do you know that I think of my heart as a fish?" Chuang Tzu said,"I regard the spirit as a fish. How do you know that the spirit is a fish?" Its fish are Chi, Mandrill, Kun, Peng and other animals in the South China Sea to eat, in the North Sea to chase. Chuang Tzu was fishing on a small island and talked to him. He said that he did not know that there were Chi, Mandrill, Kun, Peng and so on. He was not Chuang Tzu. Those who are not Chuang Tzu and talk about fish with him probably don't know something. Chuang Tzu, Chuang Tzu, is free and unfettered outside, and there is nothing he admires. It's natural, and those who talk about fish with him probably don't know. It's not that I don't know about fish, but those who talk about fish with me probably have something I don't know.