? Confucius believed in the existence of Hetu and Luoyi, and regarded them as one of the four bases for saints to write Yi. "History. Gu Ming: "Dayu, Yuyi, Celestial Sphere and River Map are in the east sequence." . Chronicle of Bamboo Books In the autumn of Xuanyuan in the fiftieth year, in July, when Gengshen arrived, the emperor offered sacrifices to Luoshui. Shen Yue's note: "The dragon figure went out of the river, and the turtle book went out of Luoshui." "Tianlong Luo Yu published a book, and the turtle published a negative article, which was listed behind. As for the number of nine, Sui Yucheng was the first to become a nine-category conventional road. " Records of Five Elements in Hanshu holds that Luo Shu is from "Talking about Five Elements in the Early Days" to "Using Six Extremes for a Long Time" in Shangshu Hongfan.
? As for the river map, it is said that Fuxi observed the sun, moon and stars, seasonal climate, the rise and fall of vegetation and so on a long time ago. However, I still know why, just don't know why. One day, a "dragon horse" suddenly jumped out of the Yellow River. At this moment, he felt that he was shocked by a strong spirit and deeply felt that there was an inexplicable harmony between himself and the nature he worshipped. He found that the design of the dragon horse coincided with his experience of observing everything naturally. In this way, Fuxi drew "Eight Diagrams" through the dragon horse's pattern and his own observation, and the dragon horse's pattern was called "River Map". In Shan Hai Jing, it is said that "Fuxi has a river map, and Xia people call it' Lianshan'". Fuxi gossip originated from the concept of yin and yang, and Wang Wen gossip originated from the astronomical calendar. But its "root" is the river map.
He Tu and Luo Shu reflect the profound ancient culture of China, involving all aspects of the universe and life. The longer you study, the more you gain.