This Chapter is a dialogue from the Yellow Emperor’s Classic of Internal Medicine, specifically Chapter 62, focusing on acupuncture principles. The Emperor and Qibo discuss the concepts of excess and deficiency in the body’s five elements (spirit, qi, blood, form, and will), their causes, symptoms, and acupuncture treatments. They explore the origins of imbalances in the five organs and meridians, emphasizing the importance of harmonizing blood and qi flow. Detailed acupuncture techniques, including subtle needling and consideration of yin and yang, are described to restore balance and resolve illnesses. Finally, the relationship between the five organs, twelve meridians, and the application of acupuncture is explained.