Shangqing Jing is regarded as the "first of the three wonders" of Taoism, and it has been circulated throughout the ages, claiming that if you get Shangqing Jing, you don't need an alchemist at all, you only need to recite it for 10 thousand times to become an immortal. The full name of Shangqing Classic is Chapter 39 of Shangqing Dadong Zhenjing, also known as Dadong Zhenjing, Santianlong Book, Jiutian Taizhen Daojing and Chapter 39 Classic, which is the first classic of Shangqing School. According to legend, when the Jin Dynasty mourned the emperor, the pen written by Mrs. Nanyue was written by Yang Suo. There was only one volume, but later generations added it. It's six volumes today. Shangqing Classic is the development of Huangting Classic, which emphasizes the protection, cultivation and chanting of "treasure chapter", which is the technique of Taoist introspection and protects one's "god" with meticulous thinking; This is a typical practice method of Shangqing School, so it not only has the Taoist way of preserving health and prolonging life, but also can be described as a book of preserving health, which contains simple and vague scientific knowledge of preserving health. But at the same time, it is full of mysterious religious colors, such as the names of the gods involved, the process of thinking, the spirit of chanting, Fu Pei and so on. The way of keeping in good health advocated by Shangqing Jing still has reference significance for Qigong, which is used to keep fit and treat diseases today. The thinking method it advocates also has a potential impact on our traditional national thinking. In addition, because it is the first Maoshan classic in Qing Dynasty, it is of certain value to the study of religious history and ideological history in Wei, Jin, Southern and Northern Dynasties.