Zhuangzi and Keiko Swimming on Haoliang is an article in Zhuangzi Qiushui. This article tells a little argument between Zhuangzi and Keiko when they were playing on Haoshui Bridge.

Zhuang Zhou followed the art method, and people enjoyed fish. From the cognitive law, Zhuang Zhou's logical reasoning about man as a fish and fish as a man is purely sophistry, but this sophistry will not make people disgusted, because Zhuang Zhou looks at the world with an artistic mentality, which is a typical "empathy" role. Zhuang Zhou transplanted his happiness into the emotion of fish, and the emotion of fish set off Zhuang Zhou's happiness.