Summer is one of the 24 solar terms. The summer solar term is around August 23rd every year. At this time, the sun reaches the longitude of the yellow meridian150. According to "twenty-four solar term", "Go and go, and the summer heat will stop here." It means that the hot summer is coming to an end. Although the average daily temperature in the vast areas east and south of Beijing, Taiyuan, Xi 'an, Chengdu and Guiyang in China and the Tarim Basin in Xinjiang is still above 22 degrees Celsius, it is in summer, but at this time, the number of cold air going south increases and the temperature drops gradually. According to "twenty-four solar term", "Go and go, and the summer heat will stop here." It means that the hot summer is coming to an end. Although the average daily temperature in the vast areas east and south of Beijing, Taiyuan, Xi 'an, Chengdu and Guiyang in China and the Tarim Basin in Xinjiang is still above 22 degrees Celsius, it is in summer, but at this time, the number of cold air going south increases and the temperature drops gradually. Although the average daily temperature in the vast areas east and south of Beijing, Taiyuan, Xi 'an, Chengdu and Guiyang in China and the Tarim Basin in Xinjiang is still above 22 degrees Celsius before and after the summer, it is in summer, but the number of cold air going south increases and the temperature drops gradually.
In ancient China, the summer heat was divided into three stages: "The eagle is a sacrificial bird; Second, wait for heaven and earth to begin; "Waiting for the third time, Wo Naideng." In this solar term, the eagle began to hunt a large number of birds; Everything began to wither; "Wo Naideng" refers to millet, millet, rice and sorghum crops, and "Deng" means maturity.