What does summer heat mean?

Summer is the hottest period of the year. Summer is the twelfth of the twenty-four solar terms, and the date is from July 22nd to 24th every year. The climate in summer is characterized by high temperature, hot weather and frequent thunderstorms. Although the summer solar terms are hot and rainy and sultry, abundant rain is very beneficial to the growth of crops at this time.

The working people in China divide the summer heat into three periods: "rotten grass is firefly;" Second, wait for the soil to moisten and cool off the heat; It clears up when it rains. "There are more than 2,000 kinds of fireflies in the world, which are divided into aquatic and terrestrial. Terrestrial fireflies lay eggs on hay, and when it is hot, fireflies ovulate, so the ancients thought fireflies were made of rotten grass. The second weather is that the weather becomes sultry and the land is wet. The third kind of weather is frequent thunderstorm, which weakens the heat and humidity, and the weather begins to transition to beginning of autumn.