How many days are there egrets in the twenty-four solar terms?

The Millennium in the twenty-four solar terms has 14 days, and the Millennium is one of the twenty-four solar terms. At this time, the temperature began to drop, the weather turned cold and there was dew on the vegetation in the morning. The Millennium is around September 7 of the Gregorian calendar every year. In ancient China, the Millennium was divided into three stages: "When Hongyan came; Second, wait for the mysterious bird to return; Three waiting birds raise shame. " It is said that this solar term is the time when migratory birds such as geese and swallows fly south to avoid the cold, and hundreds of birds begin to store dried fruits for the winter. It can be seen that the Millennium is actually a symbol of cold weather.

Millennium is the first solar term in September. Dew is water droplets formed by condensation of water vapor on the ground or near-earth objects due to temperature drop. So the Millennium actually indicates that the weather is getting cold. At this time, people will obviously feel that the hot summer has passed and the cool autumn has arrived. Because the temperature is still more than 30 degrees during the day, but it drops to more than 20 degrees at night, and the temperature difference between them is 10 degrees.