The meaning of summer heat

Summer means that the summer here is over.

Being in midsummer means avoiding, which is one of the 24 solar terms. The annual summer solar term is around August 23rd. At this time, the sun reached the longitude 150 degrees. It means that the hot summer is about to pass, when the cold air in the south increases and the temperature drops gradually. The temperature in most parts of China is gradually decreasing.

In ancient times, the summer heat was divided into three stages: first, the eagle was a sacrificial bird; Second, wait for the beginning of heaven and earth; Three Hou he naideng. In this solar term, eagles began to prey on birds in large numbers; Everything between heaven and earth began to wither; He Naideng's cereal refers to millet, millet, rice and sorghum, which means that it will mature when you climb it. The arrival of summer heat means that many areas in China will begin to transition from summer to autumn. People who have endured the heat for days are looking forward to autumn.

Temperature change

Entering summer is a solar term reflecting the change of temperature, which means hiding and ending, and entering summer means the end of hot summer. It is not enough to describe the summer solar terms from the end of August to the beginning of September simply by the beginning of temperature drop. The temperature drop is only one of the phenomena, and the reasons behind this phenomenon are as follows: First, the direct point of the sun continues to move southward, and the solar radiation weakens; Second, the subtropical high moved southward by leaps and bounds, and the Mongolian cold high began to itch to try, punching and kicking, showing its edge.

Although the average daily temperatures in Beijing, Taiwan, Anhui, Chengdu, Guizhou and Tarim Basin in Xinjiang were still above 22 degrees Celsius around this summer, the cold air southward increased and the temperature gradually decreased. Summer solar terms generally fall on August 22nd or 23rd of Gregorian calendar. After summer, the temperature is warm during the day and cool at night, and the nutrients absorbed by crops during the day are stored at night (the above contents are for reference only).