This Chapter is a dialogue from the Yellow Emperor's Classic of Internal Medicine, exploring various imbalances of yin and yang energy within the body. The Yellow Emperor, posing as a student, questions Qi Bo, his teacher, about different symptoms such as heat, cold, and numbness, attributing them to specific energy deficiencies or excesses in different organs. The discussion covers the importance of the flow of energy (qi) through meridians and the consequences of its disruption. Qi Bo explains the underlying causes and the resulting illnesses, offering insights into Traditional Chinese Medicine principles. The dialogue concludes with a discussion of respiratory issues related to the flow of qi.