Why did it get cold after a thousand years?

Yes, the White Dew is the watershed of cold and summer, and "White Dew" represents the end of the hot summer. After entering the Millennium solar terms, the summer monsoon is gradually replaced by the winter monsoon, and the cold air gradually moves southward frequently. In addition, the position where the sun directly touches the ground moves south, and the sunshine time in the northern hemisphere becomes shorter and the sunshine intensity weakens. At night, it is often partly cloudy and sunny, and the ground radiation dissipates quickly, so the temperature drop is gradually accelerated. There is a saying called "Qiu Qiu in a thousand years, it is cold all night."

After the Millennium, the temperature difference between day and night gradually widened. Although the temperature is high at noon during the day, it is already very cold in the morning and at night. Starting from the Millennium solar terms, according to the standard of dividing the four seasons by climatology, all localities began to enter autumn one after another. At this time, the temperature difference between day and night in China can reach 8℃- 16℃, so the Millennium is a solar term with a large temperature difference in a year.

Health and daily life in the Millennium

In the Millennium, there is a big temperature difference between morning and evening, so we must pay attention to dressing. "Millennium solar terms don't show your face" is intended to remind people that although the day is mild, it is already very cold in the morning and evening, and it is easy to catch cold if you play shirtless. Pay more attention to your diet.

"Difficult Classics" records: "People eat and drink for a living, and the taste of grains fumigates the skin (nourishes the skin), fills the body and moistens the hair." It means that this solar term should prevent autumn dryness because dryness hurts people.

To prevent autumn dryness, you can eat some foods rich in vitamins properly, and you can also choose some Chinese medicines, such as ginseng and adenophora, which have a good effect on relieving autumn dryness, but it is not advisable to take too much.

Refer to the above? Baidu encyclopedia-white deer