The Yellow Emperor's regimen of five internal organs tells us that the human body is a big world and the five internal organs are a small world. There are small problems in the five internal organs, which are reflected in the human body as big problems. The human body is a balanced and harmonious system, and the five internal organs perform their duties, take care of each other and contain each other. Therefore, in ancient Chinese medical books, the five internal organs are the treasures of human body and health preservation, which determine life span, ensure health and nourish essence, and are the foundation of health preservation. "All the five zang-organs and six fu-organs have gods". Only when the internal organs are in harmony and balance can the body and mind be healthy and the original intention of nourishing life be achieved.