Yellow Emperor's Foreign Classics

The content of the book is based on Taoist thought. Through the question-and-answer format between Huangdi and medical doctors such as Qi Bo and Lei Gong, the book systematically expounds the theoretical system of yin and yang and the five elements, viscera and meridians, and health cultivation practices, covering topics such as life root health maintenance, Ren and Du meridians, breathing and breathing. The whole book adopts a dialogue style to explore medical principles such as adequacy and adversity, and the rise and fall of the three levels. It involves the physiological functions of the brain, marrow, vital organs and other strange and constant organs. It also forms an academic complementary relationship with the "Huangdi Neijing" of "treating pre-existing diseases" and "treating existing diseases".