What are the medical significance of Huangdi Neijing?

Huangdi Neijing (hereinafter referred to as Neijing) is composed of Su Wen and Ling Shu, with a volume of 162 and nearly190,000 words. It is the oldest and most magnificent work in the medical history of China, and it is also the foundation stone of TCM theory. Neijing holds that the way of medicine should be "going to heaven and going to earth". "China and personnel are in harmony", so while discussing the relationship between man and nature in detail, there are also many accounts about personnel, that is, human society. Although the main purpose of Neijing is to cure diseases and save lives, it studies people not only in the sense of physiology and pathology, but also in the sense of philosophy, anthropology and sociology.