Li Jisheng's Complete Collection of Twelve-hour Health-preserving Methods in Huangdi Neijing explains the twelve-hour health-preserving methods in Huangdi Neijing in detail, and teaches readers the main points of the all-round health-preserving method in heaven and earth. The Complete Collection of Health-preserving Methods at Twelve o'clock in the Yellow Emperor's Internal Classic also brings together the health-preserving essences of ancient and modern famous Chinese medicine practitioners and the health-preserving prescriptions in ancient Chinese medicine health-preserving masterpieces to help readers fully and deeply understand the health-preserving wisdom of Chinese medicine and master the health-preserving methods of twelve o'clock and the twelve meridians from daily life. There are many simple and practical methods, such as cooking, acupressure, aerobic exercise and so on. The book tells us what to do from morning till night, at twelve o'clock every day, when to do it, how to do it is most beneficial to our health, and what diseases can be prevented and treated, which can be used by the whole family. The language in the book is easy to understand, and everyone can learn it with or without the foundation of traditional Chinese medicine. Everyone can adjust the balance of yin and yang of zang-fu organs according to twelve points, and stimulate the self-repair potential of human body, so as to achieve the purpose of strengthening the body and getting rid of sub-health.