Huangdi Neijing is divided into two parts: Lingshu and Su Wen. It is one of the earliest existing medical books in China, and it is a summary of working people's long-term experience in fighting diseases. The book was not written in a moment, and the author was not alone. It is one of the four classic works of Chinese Han traditional medicine (Huangdi Neijing, Difficult Classic, Treatise on Febrile Diseases, Shennong Herbal Classic), and it is also the earliest existing medical classic in China medical treasure house. Originated from Xuanyuan Huangdi and passed down from generation to generation, it was supplemented and developed by doctors and medical theorists. It is generally believed that the book was written in the Spring and Autumn Period and the Warring States Period. While expounding the pathogenesis and pathology in the form of dialogue between Huangdi, Qi Bo and Lei Gong, he advocated that the disease cannot be cured, but not cured, and at the same time advocated health preservation, life preservation, longevity and longevity.

Tao Te Ching, also known as Tao Te Ching, Lao Zi, Wu Qian Zi and Lao Zi Wu Qian Wen, has different opinions on its first draft and true meaning, and the differences among the various circulated versions are big or small. This book was written by Laozi (that is, Li Er) in the Spring and Autumn Period before the separation of pre-Qin philosophers in ancient China.

Zhuangzi was written in the pre-Qin period. A total of 52 articles were recorded in Art History and Literature, and there are 33 articles in this edition. Among them, there are seven internal chapters, fifteen external chapters and eleven miscellaneous chapters.

Zhuangzi is Lao Tzu's apprentice. The order of the books should be like this. The earliest proposal of "keeping in good health" should be Huangdi Neijing. I summed up what Baidu Encyclopedia said. (Hope to adopt)