What is the solar term for washing a city with wind and rain?

Washing the city by wind and rain is a solar term in Grain Rain.

Grain Rain is the sixth solar term among the 24 solar terms and the last solar term in spring. Grain Rain is taken from the meaning of "Rain gives birth to hundreds of valleys". In the traditional farming culture, the solar terms in Grain Rain link "valley" with "rain", indicating the precipitation situation, and "rain gives birth to hundreds of valleys".

The most important feature of Grain Rain is the continuous spring rain, which embodies the significance of "Grain Rain" in agricultural climate and is also the reflection of ancient farming culture on festivals.

In Grain Rain season, the climate in southern China begins to be obviously rainy. Once cold air meets warm and humid air, it often becomes rainy for a long time. In the northern region, Grain Rain is a symbol of the "final frost".

Phenology:

Shi Pingsheng: Wait for Shi Pingsheng. Duckweed is a floating plant that grows on the water surface. It likes warm climate and humid environment to avoid cold. When the weather is no longer cold and the air is warm and humid, duckweed begins to grow.

Cuckoo blows feathers: Cuckoo blows feathers for the second time. There are many kinds of pigeons, such as cuckoo, turtledove and cuckoo. Turtledoves sing, flap their wings and fly around.

Mulberry in Dai Sheng: Mulberry in Dai Sheng. Birds fall on mulberry trees in Dai Sheng, reminding people that it is time to raise silkworms. The familiar "spring silkworms will weave until they die, and candles will drain the wick every night" is one of them.

Peony Appreciation: In "See Peony in Grain Rain in the Three Dynasties", peony flowers are called Grain Rain flowers and rich flowers, and the peony appreciation in Grain Rain has a history of thousands of years. Up to now, Heze, Shandong Province and Luoyang, Henan Province will hold peony flowers in Grain Rain season for people to watch and play.