Little summer is the eleventh solar term among the twenty-four solar terms of the lunar calendar and the fifth solar term in summer, which marks the official start of the last month of summer. When the sun reaches longitude 105 degrees, it is called the solar term.

Summer heat, which means hot, is a little hot, not very hot. It means that the weather is getting hotter, but it is not the hottest, and most parts of the country are basically in line with it. Crops all over the country have entered a vigorous growth period, and it is necessary to strengthen field management.

Around the summer heat, most of southern China entered the season with the most thunderstorms. Thunderstorm is a disastrous weather phenomenon, often accompanied by strong winds, heavy rain and sometimes hail, which is easy to cause disasters.

In the eastern part of South China, because it is often controlled by subtropical high, it is often sunny and hot, and after experiencing a slight summer heat, it begins to enter the summer drought period. Climatic characteristics of drought in the east and waterlogging in the west in most parts of southern China. From solar terms to summer, the weather is changeable and rainy. In some years, rain is scarce, and high temperature and low humidity are summer drought.