Huang San Jing is a set of Taoist classics, which is mainly composed of san huang's works and the true pictures of the five mountains. Ge Hong's "Bao Pu Zi Nei Jing" and "Biography of Immortals" called "Huang San Jing" the biography of silk in Wei and Jin Dynasties. After silks and silks were reconciled, this was passed on to Ge Hong by Ge Xuan, the granddaddy of alchemist Zuo Ci, to Andrew, the disciple of Xuanchuan, and then to Ge Hong. There are not many ancient books handed down from generation to generation, among which The Three Emperors was officially banned in the Tang Dynasty and has been lost. However, the Eight Emperors' Wonderful Classics and Cave Gods in the existing Taoist books still preserve some of its Taoist teachings. It can be seen that the so-called "Huang San Astronomy" is actually 92 seal scripts. These runes represent the surnames of some gods of heaven and earth, immortals, soldiers and generals, gods of five mountains and four blasphemies and gods. If monks wear or swallow runes according to the law, they can summon the gods of heaven and earth to get rid of evil spirits. As for the "true map of the Five Mountains", it is a kind of plate shaped like a seal, which is drawn according to the zigzag of the sacred mountain of the Five Mountains. It is said that the earth can be protected by mountain gods when it walks through mountains and rivers with this plate.