The origin of spring rain in the twenty-four solar terms

Rain is the second of the 24 solar terms. Rain, like solar terms such as Grain Rain, Xiaoman, light snow and heavy snow, is a solar term reflecting precipitation and ancient farming culture. Rainwater solar terms mark the beginning of rainfall and the gradual increase of rainfall. As the saying goes, "Spring rain is as expensive as oil", and suitable precipitation is very important for the growth of crops. Entering the rain solar term, the northern part of China is still cloudy and cold, and it is still snowing in some places, but it is still very cold before the spring; Most places in the south are full of spring, with a scene of early spring.