Two mysterious cases handed down from ancient China. ...

You're talking about Hutuluo's book, originally called Matu and Tortoise Back.

Cohesion says, "The river paints, Luo writes, and the sage writes." Book of rites? Liu Yun: "The river constitutes a map of horses." Therefore, according to the records of Confucius in ancient books, we can know that the river map is a dragon horse in the Yellow River in Fuxi era, and its body has colorful patterns, which is called the negative map of the dragon horse. Fuxi recorded his words, because it came from the Yellow River, so it was called a river map. In addition, in The Analects of Confucius Zi Han: "Confucius said, I have become a family until the phoenix bird arrives and the river does not draw pictures!" "Shangshu" records: "Dayu, Yuyi, Celestial Sphere and River Map are in the east sequence." Luo Shu is said to have appeared in Luoshui in the era of the Yellow Emperor. There are nine palaces on its back armor with numbers on them, which is called Luo Shu in the Records of the Yellow Emperor.

Original picture of hetuluo book

River chart analysis chart

Luoshu analysis chart

Hetuluo text conversion diagram

Interpretation of hetuluo's book

Is the dragon entangled in the furnace? Hand-organized, welcome questions.