The Yellow Emperor's Classic of Internal Medicine, specifically Chapter 7, "The Treatise on the Separation of Yin and Yang," explores the fundamental principles of traditional Chinese medicine. The text presents a dialogue between the Yellow Emperor and Qibo, discussing the relationship between the four primary and twelve secondary channels of the body and their correspondence to the seasons and months. It details the diagnostic implications of imbalances between yin and yang energies, outlining various symptoms and prognoses based on the affected meridians. Finally, it describes the physiological manifestations of different combinations of yin and yang excesses or deficiencies, offering insights into disease processes and potential outcomes.