This Chapter from the Yellow Emperor’s Classic of Internal Medicine details a conversation between the Yellow Emperor and Qibo on the relationship between the body's internal organs, the flow of Qi, seasonal changes, and the principles of Yin and Yang. It explores how seasonal influences manifest as illnesses in specific organs and meridians, emphasizing the importance of understanding these relationships for diagnosis and treatment. The text describes the correspondence between the five elements, organs, colors, sounds, tastes, and celestial bodies. Finally, it stresses the ethical responsibility of a physician to impart this knowledge only to worthy students.