"A rotten grass is a firefly; The second stage is moist and hot soil; When it rains heavily. " What do you mean?

In ancient times, people divided the summer heat into three periods: "the first period of rotten grass turned into fireflies"-the ancients thought that fireflies changed from rotten grass at this time of year. "The soil is wet and hot in summer"-the weather begins to be sultry and the land is wet. "When it rains in three seasons"-there are frequent thunderstorms, which weaken the heat and humidity in summer, and the weather begins to transition to beginning of autumn.

The summer solar term is the hottest time of the year, just before and after the "midsection" of the "dog days". Since ancient times, people have had the custom of drinking herbal tea (tea) in the dog days of summer; Fucha, as its name implies, is a kind of tea to drink in dog days. This kind of tea boiled with Chinese herbal medicine has the function of cooling and dispelling summer heat. In addition, there are customs such as burning incense and drying ginger.

Extended data:

The weather is hot in summer, and thunderstorms and typhoons are frequent. The summer solar term is just around the "Mid-Autumn Festival" in the dog days. It is the hottest period in a year, with the highest temperature and the fastest growth of crops. At the same time, meteorological disasters such as drought, flood and wind disaster are also the most frequent in many areas.

During the hot summer, there is a custom of eating pineapple in Taiwan Province Province, and people think that pineapple is the best at this time. In addition, the pronunciation of pineapple in Minnan dialect is the same as that of "Wanglai", so it is also used as a symbol of praying for peace, good luck and prosperous business.