Do you want to wear thin cotton trousers when it rains 8 degrees in Changsha County, Hunan Province?

Rainy days mainly mean that the water on the earth is turned into steam and evaporated into the air after being irradiated by sunlight. When water vapor meets cold air at high altitude, it condenses into small water droplets, which are lifted by updraft in the air and gather into clouds in the air. These small water droplets fall from the clouds and become raindrops and fall to the ground. In the rainy weather of eight degrees, the temperature will drop rapidly. So add thick clothes such as thin cotton trousers to keep warm.