Help: I ​​woke up late at night when I suddenly felt a gust of wind blowing on my back. The window curtains were basically closed~~~

Your situation can be explained by the theories of traditional Chinese medicine and Taoist practice. Traditional Chinese medicine believes that with sufficient righteousness, the human body has the ability to naturally eliminate diseases. When the body's healthy qi is sufficient, it will automatically expel disease qi from the body including wind, fire, heat, dampness, dryness, cold, etc., also known as evil qi, disease pathogens, etc. This is why some minor illnesses sometimes heal without medicine. It is the so-called "when the righteousness is sufficient, the evil will be eliminated by itself." In your case, some of the cold energy accumulated in the body should be expelled, and it is relatively concentrated. The person is in a state of near tranquility, so it is easy to detect. Although you feel like the wind is blowing through you, it should actually be the wind blowing outward from your body. Don't panic about this situation, don't take it too seriously, just let it be.