What solar term is the rotten grass of fireflies?

Turning rotten grass into fireflies is a solar term.

The ancients in China divided the Great Summer 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. " ?

Every summer, due to the high temperature and rainy weather, many dead plants are damp and rotten. At night, fireflies can often be seen flying around, looking for food on rotten grass and leaves.

In addition, the soil is hot and humid, which is very suitable for the growth of water-loving crops such as rice. The third kind of weather means that rain will fall in the sky at any time in this hot and humid weather in the same season.

The hot summer custom:

1, send "Xia Chuan":

Sending a "summer boat" is a traditional folk custom in Zhejiang coastal areas, especially in many fishing villages in Taizhou. Its significance lies in sending the "five saints" out of the sea.

2. Dried ginger:

Fujiang originated in Shanxi and Henan provinces of China. In dog days, people slice or juice ginger, mix it with brown sugar, put it in a container, cover it with gauze and dry it in the sun.

3. Drink tea:

Fu Cha, as its name implies, is the tea people drink in dog days. This kind of tea, which is made of more than ten kinds of Chinese herbal medicines such as honeysuckle, selfheal and licorice, has the function of cooling and relieving summer heat, and has a special name in Wenzhou called "Fu Cha".