1. The internal relationship between daily life and the 24 solar terms, corresponding to the four seasons and the 24 solar terms, has its own uses.
Spring is in the east, and the color is blue, corresponding to human liver. The liver begins to understand the eyes and the essence is hidden in them. Therefore, improper health preservation in spring often occurs in the liver meridian, but mostly in the neck.
In summer in the south, the color is red, which corresponds to the heart. The heart is understood by the ear and the essence is hidden in it. If it is not nursed back to health properly, its lesions mostly occur in the heart meridian, but in the chest and hypochondrium.
Autumn is in the west, white, corresponding to the lungs. The lung opens in the nose and the essence is hidden in it. If nursed back to health improperly, its pathological changes often occur in the lung meridian, but in the shoulder and back.
In winter in the north, the color is black, corresponding to the kidney. . The kidney is realized by the yang, and the essence is hidden in it. If nursed back to health improperly, its pathological changes often occur in the kidney meridian, manifested in the waist and thighs.
The central color is yellow, corresponding to the spleen. Spleen opens in the mouth, essence is stored in the mouth. If nursed back to health improperly, its pathological changes often occur in the spleen meridian, manifested in the back.
Huangdi Neijing pointed out that the three months of the six solar terms in spring are the season of "bringing forth the old and bringing forth the new" and the revival of everything. Vegetation is flourishing and the world is full of vitality. In this season, people should go to bed at night, get up early, take a walk in the yard, let their hair loose, relax their bodies, and let their hearts flourish with the vitality of spring. Violation of this principle will damage the liver, and in summer, it will get cold disease, and the material basis for summer prosperity will be poor.
Three months of the six solar terms in summer is the so-called "vegetation show", which is a season of beautiful reproduction. In this season, the yin and yang of heaven and earth intersect and plants blossom and bear fruit. People should lie down and get up early at night, and don't hate that the day is too long, so that there will be no depression and anger in their hearts, and their faces will be beautiful, which can make their senses clear, relieve the summer heat and show the beauty of being born outside. If you violate this truth, your heart will be hurt, you will get malaria in autumn, and your supply convergence ability in autumn will be poor.
The three months of the six solar terms in autumn are the so-called "hiding" season, and everything is mature. The weather is urgent and the atmosphere is clear. In this season, people should go to bed early and get up early, so as to keep inner peace and relieve the cold in Sanqiu. The spirit should be kept inside, and the atmosphere in autumn can be peaceful. If you violate this truth, your lungs will be injured, your diarrhea will not be solved in winter, and your ability to supply gas in winter will be poor.
The six solar terms and the three months of winter are the so-called "closed Tibet" seasons, which have potential vitality. The water froze and the ground cracked. In this season, people should not disturb the spirit of the sun, go to bed early and get up late, and wait until dawn to hide their will, as if they had private interests and income. You must also get wet with cold, and don't make your skin sweat. If you violate this principle, your kidneys will be injured, you will get flaccid paralysis in spring, and your eating ability will be poor in spring.
2. Life should adapt to the 24 solar terms. During the Spring and Autumn Period and the Warring States Period, Lao Zi, a well-known health care scientist, put forward the philosophical viewpoint of "man and place, the ground follows the sky, the sky follows the Tao, and the Tao follows the nature" in Tao Te Ching, which produced a health care concept of "conforming to nature" and laid a theoretical foundation for four-season health care. "Lu's Spring and Autumn Annals" has a clear exposition on adapting to the four-season climate change: "Being born with yin and yang, cold and hot, dry and wet, makes things change in four seasons, and everything is beneficial and harmful. Saints should keep the yin and yang suitable, and distinguish the benefits of everything in order to live a long life." Longevity means "not short and discontinuous, but enough", which means that people can enjoy life to the best of their ability.
During the Han and Tang Dynasties, many outstanding health experts appeared, such as Hua Tuo, Tao Hongjing, Sun Simiao and Chen Xiyi. They all have incisive exposition on the theory of four seasons health preservation and put forward many more specific methods of four seasons health preservation. For example, Hua Tuo's "Han Zang Jing" put forward the view that "Yin and Yang rise and fall together, and the new creation is more endless, and people can learn from it", which created the exercise method of Wuqinxi; Sun Simiao's Qian Jin Fang Yao and Qian Jin Fang Yi recorded various specific methods of eating, medicine and surgery. Chen Xiyi, a Taoist priest in the late Tang Dynasty, created twenty-four Qi-inducing sitting exercises, which originated from the change of Yin and Yang at four seasons and the theory of the five elements' attachment. The exercise is arranged according to the change of 24 solar terms in a year, which is in line with the principle of "harmony between man and nature". This set of exercises was quite popular in the Ming and Qing Dynasties, and many health preserving works were recorded.
During the Song and Yuan Dynasties, four famous doctors in Jin and Yuan Dynasties and many health care experts such as Chen Zhi, Zou Xuan, Qiu Chuji and Wang Jue emerged. They wrote a large number of health care monographs, such as Letters for the Aged, Taking Health Care Newspaper and Taiding Health Care Essentials, which inherited and developed the four-season health care thought in Huangdi Neijing, and improved the theory and methods of four-season health care, especially in dietotherapy and medication. For example, in the Song Dynasty, Chen Zhi wrote 162 prescriptions for nourishing food, pointing out that "stomach qi is the foundation of the four seasons" and clearly put forward the regulating and maintaining role of diet in the changes of yin and yang in the four seasons: "The integration of yin and yang and the coexistence of five elements are all due to diet". His exposition promoted the popularization and development of four-season food supplement.
Ming and Qing dynasties are the heyday of four seasons health preservation, which has made great development in theory and method. Wanquan's Four Essentials of Health Preservation, Gao Lian's Eight Notes on Respecting Life, Gong Tingxian's Life Saving, and Cao Tingdong's Old Constant Words all summarized the experience and achievements of four-season health preservation in detail, which not only made innovations in theory, but also played a great role in promoting the popularization of health preservation and promoting people's health and longevity.