Treatise on Febrile Diseases is listed as four classic novels in the history of traditional Chinese medicine.
The three months of winter, the so-called hiding, is the season when vitality lurks and everything hides. On this festival, Shui Han is frozen and the earth is cracked. People should go to bed early and get up late, and get up as soon as the sun shines. Don't disturb the spirit of the sun easily, work hard. Keep your thoughts deep in your heart, keep quiet, as if you have personal secrets, keep them strictly, and hide them as you want. Stay away from the cold, seek warmth, and don't let the skin open and lose, so that the yang will continue to lose. This is a way to adapt to the winter climate and maintain the function of human artifacts. If you violate the closed qi in winter, it will damage your kidneys, make the conditions for providing qi in spring life insufficient, and paralyzed diseases will occur in spring.
There is too much to say, and these are for reference.