1, Ancient Astronomical Works: There are some descriptions and opinions about the horizon theory in China's ancient astronomical works. In the classic works such as Astronomy Classics and Three Menopause, we can find discussions related to the horizon theory, which describes the view that the earth is at the center of the universe and surrounded by celestial bodies.
2. The course of scientific thinking: China's ancient astronomical thought has experienced the evolution from horizon theory to heavenly heart theory and the theory of the unity of man and nature. In the development of ancient scientific thinking, the horizon theory played a certain role, which was the starting point and beginning of the development of China's ancient astronomical theory. The existence of horizon theory urged later astronomers to make more in-depth observation and research, and finally overthrew the horizon theory and formed more accurate astronomical views and theories.