What does it mean that there is a little summer heat in the 24 solar terms?

1. Slight heat is relative to great heat. The ancients thought that the period of light summer heat was not the hottest time of the year, so it was called light summer heat. Every year around July 7th, when the sun reaches the longitude 105, the solar term begins. As the saying goes, "the heat is at three volts." In our country, the dog days generally appear on the 28th day from summer to the future, which is called "Three Geng from summer to the sun, and the number of people is falling".

2. In ancient China, the slight summer heat was divided into three periods: "First, it was warm and windy; Second, wait for crickets to live in space; The third waiting eagle began to crow. " In summer, there is no cool wind on the earth, and all the winds carry heat waves; The words describing crickets in the Book of Songs in July are "Wild July, August, September at home, October in bed." The August mentioned in this article is June in the summer calendar, which is a short time in summer. Because of the heat, crickets leave the field and go to the corner of the yard to escape the heat. In this solar term, the eagle is in the cool high air movement, because the ground temperature is too high.