This Chapter from the Yellow Emperor’s Classic of Internal Medicine details a dialogue between the Yellow Emperor and Qi Bo concerning qi reversal, the transfer of heat or cold between the body's five organs and six bowels. The text meticulously describes the various symptoms and pathologies resulting from these transfers, ranging from mild conditions like nosebleeds to life-threatening illnesses. The severity and specific symptoms are carefully correlated to the organs involved and the nature (hot or cold) of the transferred qi. The discussion ultimately aims to explain disease etiology and prognosis based on this model of energetic imbalance.