The white dew is the fifteenth solar term in the twenty-four solar terms of the lunar calendar, and it is the white dew when the sun reaches 165 degrees. As the weather gets colder and colder, you will find many dewdrops on the ground and leaves in the morning, which is named after the water vapor condenses on them at night. The ancients used four seasons with five elements, and autumn was golden and golden white, so white was used to describe autumn dew. Entering the "Millennium", I will feel a little cold at night.

Characteristics of solar terms:

In the Millennium, condensation is water droplets condensed by water vapor on the ground or near-earth objects due to the temperature drop. So the Millennium is actually a sign 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. ?

In the Millennium, after the north-south airflow over China, the cold air in the north turned to the defensive and frequently went south, while the warm air in the south gradually retreated, so the temperature dropped rapidly. There is a folk proverb that "it is not hot for a thousand years, but it is cold all night". Because of the cold weather, mosquitoes are no longer active, so there is also a saying that "mosquitoes shut up after drinking the Millennium".