Mencius said: When Yao was in power, the water was retrograde and flooded in China. Snakes and dragons lived there, and the people were uncertain. The bottom was a nest, and the top was a camp. The book says: "I am more than a policeman." Those who drown the water, the flood is also. Make Yu Zhizhi. Yu digs the ground and pays attention to the sea, drives the snake dragon and releases it, and the water travels from the ground to the bank, so does Jianghuai Hehan. Dangers and obstacles are far away, and those who are harmed by birds and animals will disappear, and then people will have to live on the ground. (Mencius Teng Wengong) Nature is the foundation of the environment and the fundamental condition for human existence. But the relationship between man and nature is not aesthetic at first, but full of awe and fear. Only after solving the basic survival needs can there be an aesthetic relationship between man and nature. In Mencius, we can see that there is both conflict and harmony between man and nature. From this quotation, we can see that when people's productivity level is relatively low and they can't humanize nature, nature can't be an aesthetic object for people. Whether it is rivers, lakes and seas, or birds, animals, insects and fish, as long as they threaten the survival of mankind, no matter how aesthetic they are in form, it is difficult for people to have a sense of beauty. At this time, the relationship between nature and human beings is antagonistic, and it is a kind of "harm", which requires outstanding human beings, such as Dayu, to fight against nature and make it conform to the purpose of human beings. At this level, nature is mainly the object of human transformation and conquest. On the contrary, when the threat of nature to people is removed, the relationship between man and nature can get rid of the simple conquest and confrontation, and show a warm and aesthetic side. Source: Poyang Lake Journal