This Chapter is a dialogue from the Yellow Emperor's Classic of Internal Medicine, specifically Chapter 80, "Discussion of Great Perplexities." The Yellow Emperor questions Qibo about various physical and mental ailments, including dizziness, forgetfulness, insomnia, and unusual sleep patterns. Qibo explains these conditions using the principles of traditional Chinese medicine, focusing on the balance of qi, the five zang organs, six fu organs, and the flow of energy throughout the body. The discussion highlights the interconnectedness of physical and mental health within a holistic framework, offering explanations and treatment approaches rooted in the theory of yin and yang. The text emphasizes understanding a patient’s individual constitution before treatment.