Reach a figure in summer.

Now is the fifth summer, the fourteenth of the twenty-four solar terms. Dou Zhiwu (Southwest); The solar meridian reaches150; August 22-24 of the Gregorian calendar every year. Being in the heat is "out of the heat", that is, out of the heat.

Summer is a solar term reflecting the temperature change. "Chu" means to hide and die, and "early summer" means that the hot summer has passed. As the height of the sun decreases, the heat it brings will also decrease.

After summer, the temperature gradually decreases and the temperature difference between day and night gradually increases, but the temperature is still high during the day. The reasons for this phenomenon are as follows: first, the direct point of the sun continues to move southward, and the solar radiation decreases; Second, the subtropical high moved southward by leaps and bounds, and the Mongolian cold high began to itch to try.

The heat has gradually subsided. Although the summer heat is decreasing and the temperature will not suddenly rise, there will still be short-term reheat weather during this period, but it is not really cool. It usually gets cold after a thousand years.