There are three periods of severe heat, and one period of decaying grass is called firefly. The land born fireflies lay their eggs in the withered grass, and the eggs melt out in the heat. Therefore, the ancients believed that fireflies were transformed from decaying grass. Second class soil moistens the bath. In the summer, the weather becomes sultry and the land becomes humid. When it rains three times. This season is often accompanied by thunderstorms, heavy rain, and summer heat, which also indicates that autumn is coming 。
