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

Being in the heat is "out of the heat", that is, out of the heat.

Summer is the fourteenth of the twenty-four solar terms, and autumn is the second. 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. In summer, the direct point of the sun continues to move southward, the solar radiation is weakened, the subtropical high is also withdrawn southward, and the summer heat gradually disappears. Summer has reached the "last summer" of the "three summers" of high temperature weather, the temperature will not be abnormal, and the extremely hot weather has come to an end.

In ancient times, the summer heat was divided into three stages: "The eagle is a sacrificial bird; Second, wait for the beginning of heaven and earth; Three Hou Wonaideng. " In this solar term, eagles began to prey on birds in large numbers; Everything between heaven and earth began to wither; "Henaideng" refers to millet, millet, rice and sorghum crops, and "Deng" means maturity.

How long will it be hot after the heat?

From 15 days to 1 month, in many places in southern China, "autumn tigers" will appear after the summer heat. The weather is hot and dry, but it cools down slightly in the morning and evening. This kind of weather will last for ten days, usually it is really autumn in the Millennium, and the weather will really cool down.

After the summer heat, the sun will be stronger in the northern region except at noon, and it will not be too hot at other times. After the summer heat, the weather in the north will gradually turn cold, while the south is vulnerable to the influence of autumn tigers and continues to be hot. Many areas in the south will still be affected by the southeast monsoon, and the weather is still hot, but the temperature will be lower in the morning and evening than in summer, and the weather will gradually become dry at this time. We call it "autumn tiger".