Why is it that the more stars there are on a summer night, the hotter the weather is the next day? Pray for the great gods.

At night, the number of stars is closely related to the sky conditions at that time. When there are clouds in the sky, because the stars are covered by clouds; At the same time, starlight will be reflected and absorbed by water droplets, so from the ground, there are few stars and the luminosity is very weak. If there are no clouds in the sky and there is less water vapor in the air, there will be many stars from the ground. In summer, when some areas are shrouded by subtropical high system, the air in these areas mostly sinks. During the sinking process, the air pressure gradually decreased, and the air layer became drier, resulting in cloudless weather. After nightfall, the solar radiation heat source is interrupted, the ground temperature drops rapidly, the evaporation of water vapor weakens, the temperature in the lower layer drops, the gas layer becomes drier and more stable, and people will see more stars. Therefore, people can judge that the local area is being shrouded by subtropical high from the fact that there are more stars in summer nights. Under this pressure, the weather turned sunny to cloudy. During the day, solar energy fully irradiates the ground, causing the ground to heat up strongly. Moreover, under this high pressure, the weather is often relatively stable and rarely changes. Therefore, we can further judge that the weather will be hotter the next day from the phenomenon of many stars in summer. This is the truth of the words "the sky is full of stars, and it will be sunny tomorrow" and "the stars are bright at night, but it will still be sunny in the Ming Dynasty". However, due to the sunny weather, there is a maximum limit. However, the temperature rise is not limited by this, and the subtropical high cannot be maintained for a long time. There are many reasons for the changes in weather. Therefore, "the more stars" is not necessarily "the hotter tomorrow".