After the spring water dried up, the fish stuck to the land together, breathing water in each other's mouths and wetting each other with spittle in their mouths. Even so, it is better to forget each other in the Jianghu. Instead of praising Yao and scolding Jie, it is better to forget both and assimilate into the avenue. It seems that Zhuang Zhou made it very clear. In fact, even if they are on the verge of extinction, the fish that are still together are not more noble and admirable than the fish that can still play in the rivers and lakes despite giving up. Just like the so-called good and bad in the world, there is actually no difference. As long as let nature take its course, or do nothing or do everything, you can get the same result in the same way. In fact, a passage from Confucius can be used as a comment-Confucius said: "Fish makes water and man-made roads. Those who build water together, cross the pool to eat; Those who create Tao are born with nothing. " As the saying goes, "fish forget rivers and lakes, and people forget Taoism." Thus, the meaning of Zhuangzi's so-called "rivers and lakes forget each other" becomes very clear, echoing his famous saying: "My life is limited, but my knowledge is also limited. With the limit, it is almost impossible. Almost all the people who did what he did are gone (homogeneous object theory).