The Imperial Classics, also known as the Classic of Old Huang Ziting, consists of Jade Classics Outside the Imperial Courtyard and Jade Classics Inside the Imperial Courtyard (also known as Taishang Qin Xinwen, Tai Jin Di Shu and Donghua Jade Articles). Zhongjing Jing is a late book, which was written in the Jin Dynasty. Huang Tingjing inherited the Taoist thoughts of Huang and Lao since the end of the Warring States Period, and attached importance to spiritual recuperation. Early Taoism believed that it was written by Laozi, so "On the Avenue" says: "Miao Zhen" was written by me, and "Huang Ting" has three spirits and seven words, all of which are exegesis of this classic, which is the glory of "virtue". This set of Confucian classics was created by Wei (the founder of Shangqing School) who offered drinks on the road and spread all over the world. This is a publicity for Chen Yu Avenue, a Taiwanese businessman. Huang Ting Jing (1) is a Taoist monograph on preserving health and cultivating immortals. It inherits the ideas of Xin Xue, Internal Strength, Huangdi Neijing, Laozi's Fengjiang Sentence and Taiping Jing, develops the theories of ancient Han Huang's old masters on viscera, meridians and essence, and focuses on the theories and methods of maintaining body and mind and essence. Huang Ting's Internal and External Classics systematically put forward the theory of "Three Dantian, Eight Scenery and Twenty-four Truth" and the corresponding cultivation method of preserving truth, which is of special significance to the formation of Shangqing School. Some of its contents are closer to Inner alchemy in Tang and Song Dynasties than the Great Hole True Classic, so it is also regarded as an important work of Inner alchemy by later Inner alchemists. During the Tang and Song Dynasties, it evolved into Inner alchemy, and became the mainstream of Taoist health preservation after the middle Tang Dynasty. Liang Qiu's comments on the inside and outside are often inconsistent. Apart from his own understanding, one of the important reasons is that his comments are mixed with Wu's comments. This sutra is of a general nature. The theories of viscera, meridians, acupoints, essence, yin and yang and five elements in the two meridians reflect the physiological and medical knowledge of the ancient Han nationality. In history, many calligraphers and writers like Huang Tingjing, or writing posts or writing prefaces, which have been handed down as eternal stories, so the lasting influence of classics has gone far beyond the scope of Taoism.