What is the meaning of summer heat in the twenty-four solar terms?

In summer, it is "going out of summer", which means leaving in the heat.

Summer is the14th solar term among the 24 solar terms of the lunar calendar. The time point is August 23rd, Gregorian calendar, and the sun arrives at 150. Summer solar terms mean that we are about to enter the autumn with meteorological significance. After the summer, the temperature in the area north of the Yellow River in China gradually drops.

In summer, the direct point of the sun has moved from 23 26' north latitude to1128' north latitude. In the urban area of Beijing, the length of a day is shortened from 15 hours to 13 hours and 25 minutes, and the height of the sun at noon is also reduced from 73 32' to 6134', so people can clearly feel that the sun is moving southward. As the height of the sun decreases, the heat it brings will also decrease.

After the summer, except for South China and Southwest China, the rainy season is coming to an end in most parts of China, and the precipitation is gradually decreasing, and rice is ripe and harvested. Especially in North China, Northeast China and Northwest China, we must pay close attention to water storage and moisture conservation, prevent autumn sowing drought and postpone the sowing date of winter crops.