Fireflies flying is a solar term phenomenon in summer.

Fireflies flying is a solar term phenomenon in summer. Generally, fireflies fly in the grass, which indicates that autumn is not far away.

Great summer heat, one of the 24 solar terms, is the last solar term in summer. "Summer heat" is heat, and summer heat is extremely hot. Summer heat is hotter than summer heat. Summer heat is the most intense and hottest solar term in a year, and "hot and humid steaming" reaches its peak at this time. Climatic characteristics of summer: high temperature and scorching heat, frequent thunderstorms and typhoons.

Fireflies mostly lay eggs on grass roots near the water in summer. Larvae is buried in the ground to pupate, and eggs come out at high temperature, just like rotten grass turned into fireflies. The weather began to get sultry and the land became wet; The summer heat is the period with the most sunshine and the highest temperature in the basin in a year. It is also the period with the most rain, the most common thunderstorm and the most concentrated and frequent high temperature days in the west of the basin. Therefore, summer is also the season of thunderstorm weather.