This is a health care book that guides us to conform to nature and master the essence of health care in the 24 solar terms. On the basis of Huangdi Neijing, this book makes an in-depth and detailed analysis and puts forward the key points and methods of health care that should be paid attention to in the 24 solar terms. The book is divided into twenty-four parts, each part corresponds to a solar term, and the key points of health care closely related to the human body are expounded and answered.