This Chapter is a dialogue from the Yellow Emperor's Classic of Internal Medicine, specifically Chapter 68, exploring the principles of Qi and its cyclical movement within the human body and the cosmos. The Yellow Emperor questions Qibo about the sixfold rhythm of heavenly Qi, its alignment with earthly geography and the five elements, and the consequences of its harmonious or disharmonious flow. Qibo explains the concepts of balance and imbalance, their effects on health and illness, and the importance of aligning oneself with the natural cycles. The conversation ultimately touches on the ideal state of achieving harmony with the Dao.