On the river map, black spots and white spots arranged in several arrays contain infinite mysteries; The sum of the three numbers on the vertical, horizontal and diagonal lines in Luoshu is equal to 15, which is very wonderful. Scholars at home and abroad have conducted long-term exploration and research on this issue, believing that it is the crystallization of the spiritual thinking of Chinese ancestors and the first milestone of ancient civilization in China. The Book of Changes and Hong Fan play an important role in the history of China's cultural development, and have far-reaching influence on philosophy, politics, military science, ethics, aesthetics and literature. As the historical and cultural origin of China, Hetuluo's books have contributed greatly.