Huangdi Neijing talks about the basic principles of keeping in good health at four seasons. Huangdi Neijing holds that "spring lasts for a long time, summer lasts for a long time, autumn harvests last for a long time, and winter stays for a long time", which is the original text of "Four Qi Tunes the Spirit". Spring and summer belong to the yang, and the yang of human body is in a state of vigorous growth. At this time, you can warm the sun and drive away the cold. Autumn and winter belong to yin, and the yang of the human body belongs to the closed state. At this time, it is necessary to consolidate the foundation and cultivate the yuan, assist in nourishing the essence of yin, and seek yang in yin. Both spring and summer are like the relaxed state of spring, and its elasticity is external. Autumn and winter are the state of spring pressure, and its energy is gradually gathering and gathering. Of course, this metaphor is inappropriate, because there is always a limit to how far a spring can go, but the deeper the spirit, the better.

In autumn and winter, if the yin qi of the human body is preserved thicker and thicker, the bone marrow of the human body is preserved stronger and stronger without side effects. But spring is different. If you press the spring too hard, it will crush. If we harvest in autumn and store in autumn and winter, it will not do any harm to our health, but will only make you stronger when you grow up next spring and summer. So this is the driving force that winter health can provide or the premise of growth in the next spring and summer. If there is not enough blood, how can the next spring and summer grow so vigorously? So the law of autumn harvest and winter storage is very important.

The climate characteristics in winter and March refer to 10 month,1month and1February of the lunar calendar, including beginning of winter, light snow, heavy snow, winter solstice, slight cold and severe cold. This is the season when all living things are hidden and closed. Nature is overcast, freezing cold, and the river is freezing cold. The sun is strong and should not be disturbed. What are the climate characteristics in winter? Why should we emphasize that occult blood closes the yang in winter? Winter solstice and March refer to1October,1month and1February of the lunar calendar, including beginning of winter, light snow, heavy snow, winter solstice, slight cold and severe cold. This is the season when all living things are hidden.

Therefore, our human growth and collection are imitating nature. When all the vitality of nature has moved to the hiding place, human activities should also be moved to the hiding place, which is in line with the law of heaven and earth. In addition, nature is too cold, and the river is frozen, which is not suitable for people to do too many outdoor activities at this time. The sun be the spirit goes deep slowly, and the sun be the spirit goes deep. How did we ancients find it? The ancients found that the deeper the water in winter, the higher the water temperature; The colder the summer, the deeper the spirit of the sun is, and the lower the height of the sun, which is also an aspect of the spirit of the sun. The yang of our human body will also move towards closed storage. It is not appropriate to disturb at this time, but suitable for nourishing. This is the characteristic of winter weather.