[There will be no fish when the water is clear? People should not demand absolute purity]
From "Dai Dai Li Ji": Clear water means no fish, and people look at it without disciples. It means that fish can't live if the water is too clear. Now it is used to warn people not to expect too much from people and things, and to explain in detail that fish can't be hidden if the water is too clear. Metaphor is too picky about people and things, and there is no room for many people. "Dai Li Li Ji Zhang Zi seeks an official position": "If the water is clear, there will be no fish, and there will be no disciples." "It's difficult to answer a guest" written by Han Dongfang Shuo: "If the water is clear, there will be no fish, and if people look at it, there will be no disciples ... If you are great in virtue, you don't have to prepare for one person." "Biography of the Book of Jin": "Therefore, if the water is clear, there will be no fish, and the political inspection will be obedient. This is also a natural trend. "