What kind of concept is "the sky is round and the earth is round"

China's traditional culture advocates "harmony between man and nature" and pays attention to learning from nature. The principle of "the sky is round and the place is round" advocated in Feng Shui is a special interpretation of this world view. Circle is the knowledge of Taoism in China, and Fang is the ideal realm of Confucian personality cultivation in China. The mutual tolerance between the circle and the square and the complementarity between Confucianism and Taoism constitute the main spirit of China traditional culture.