"The law is yin and yang" means that people should live and live according to the changing laws of nature, and increase or decrease clothes and quilts in time with the changes of the four seasons. "Harmony in math and art" means that people should exercise according to correct health care methods, such as psychological balance, reasonable diet, regular life, quitting smoking and limiting alcohol, moderate exercise and not overworking.
From Huangdi Neijing: "Those who know the ancient times, yin and yang are in harmony, several strokes are in harmony, diet is in harmony, and life is not impetuous, so they can be in harmony with God and die at the age of 100." "The law is based on Yin and Yang, and on the number of skills", which is the general principle of health preservation in Huangdi Neijing, and its essential meaning is to live according to the laws of nature.
Introduction of Huangdi Neijing;
Huangdi Neijing is divided into Lingshu and Suwen, which is the earliest medical classics in China and one of the four classic works of traditional medicine. Huangdi Neijing is a comprehensive medical work, which establishes the theories of Yin and Yang, five elements, pulse condition, Tibetan image, meridians, etiology, pathogenesis, symptoms, diagnosis, treatment, health preservation and luck.
This paper discusses medicine from a holistic point of view and puts forward a "holistic medical model" of nature, biology, psychology and society. Its basic material comes from the long-term observation of life phenomena in ancient China, a lot of clinical practice and simple anatomical knowledge. Huangdi Neijing laid the foundation of human physiology, pathology, diagnosis and treatment. It is a medical work with great influence in China and is called the medical ancestor.
Refer to the above content: Baidu Encyclopedia-Yin-Yang Method, in Shushu.