This Chapter is a dialogue from the Yellow Emperor’s Classic of Internal Medicine, a foundational text of Traditional Chinese Medicine. The dialogue explores various illnesses, their diagnoses based on pulse analysis and other symptoms, and their treatments using acupuncture, herbal remedies, and dietary adjustments. The discussion also covers fundamental diagnostic principles found within different sections of the Classic, emphasizing the importance of understanding the relationship between illness, the four seasons, and the body's internal energies. The overall focus is on the practical application of TCM theory to clinical practice.