This Chapter is an excerpt from the Yellow Emperor's Classic of Internal Medicine, a foundational text of Traditional Chinese Medicine. It focuses on the relationship between the five internal organs (liver, heart, spleen, lung, kidney), the five elements, and the four seasons. The text details how each organ's energy is associated with a specific season and how imbalances can be understood and treated based on this seasonal correspondence. Specific dietary recommendations and meridian therapies are outlined to restore balance. The text also explores the progression of disease based on seasonal influence and the appropriate timing of treatment.