Which is correct, the Millennium Autumn Night or the Millennium Autumn Equinox?

A thousand years of autumn wind and a cool night.

It means that the autumn is getting colder every day after one thousand years. "The Millennium is divided into autumn nights, and it is cool all night." There is a saying in Chinese medicine that "a thousand years don't show, cold dew feet don't show." In other words, after the Millennium solar terms, you can't go shirtless when you wear clothes. In addition, the weather is changeable after the Millennium, especially the large temperature difference between morning and evening, which is easy to induce colds or lead to the recurrence of old diseases. The Millennium is a solar term, which means the weather is cold. Although the temperature can still reach more than 30 degrees during the day, it will still be cooler at night, with a large temperature difference between day and night. If it rains, the temperature will drop more obviously. Therefore, we should pay attention to adding clothes in the morning and evening, don't be topless, and don't be greedy when sleeping.