In what ways did the concept of the universe in the round place affect the traditional culture of China?

"The sky is round and the earth is round" is not the horizon theory, but China's ancient philosophical thought, which reflects the theory of Yin and Yang. The sky and circles symbolize movement; The earth and the square symbolize stillness; The combination of the two is the balance of yin and yang, and the dynamic and static complement each other. The design concept of "the sky is round, and the earth is round" is manifested in ancient architecture and currency in China, such as the Temple of Heaven Ditan, quadrangles, square holes and coins. These patterns and structures of "round place" have played a propaganda role in the traditional culture of China, symbolizing the idea of "Confucianism outside and law inside" in politics and "being outside and inside" in dealing with people. "The sky is round and the earth is round" is the understanding of the universe in ancient science. China's method of understanding the universe in ancient times is different from the empirical experimental method of modern science, but the practice of "internal evidence". Ancient scientists summed up a set of abstract world laws through the practice of "internal syndrome": yin and yang and five elements. Yin-yang and five elements are divided into many levels, and their concepts are just like the unknown "x, y" in the equation in modern mathematics. That is to say, when solving a specific problem, the unknowns such as X and Y have specific representative substances, while when interpreted from a purely mathematical point of view, X and Y are unknowns without specific directions. Huangdi Neijing put forward the theory of five movements and six qi, which summarized the movement of heaven and earth energy. Whenever the energy between heaven and earth changes, it will gradually appear in the observable macro world. For example, when the "wood" attribute energy represented by the Seven Hostels in the East comes in spring, the earth thaws, seeds germinate and everything recovers; Enter a new round of "spring life, long summer, autumn harvest and winter storage". With the changes of the four seasons, the health of human life will be affected in different ways. Therefore, there is a theory of four seasons regulating spirit in Huangdi Neijing [2], which discusses the influence of four seasons yin and yang transformation on human body. The ancients summarized the law of energy change in micro-state as "the theory of five movements and six qi", which was used to describe the relationship between energy change and time between heaven and earth and the influence of this change on life on earth, that is, "time".