The next sentence of "Spring rain is as expensive as oil" is: "There is rain all over the street". The poem "Spring Rain" in the Ming Dynasty said: "Spring rain is as expensive as oil, and it flows all over the street. Learn it by sliding and laugh at a group of cows."

Spring is the period when overwintering crops, such as winter wheat, turn green to milk maturity, which requires a lot of water. Corn, cotton, etc. From sowing to emergence, we also need enough water, which makes the spring drought more prominent.

If there is rain at this time, it will naturally be particularly precious, so there is a saying that "spring rain is as expensive as oil".

The spring drought in North China is more serious. The spring rain accounts for 10- 15% of the annual precipitation, and in some places it is less than 10%. If there is little rainfall in autumn and winter, the temperature rises rapidly in spring, windy days and strong evaporation, it is often easy to form drought in autumn, winter and spring. At the same time, it is the time when the overwintering crops turn green to milk maturity, which requires a lot of water supply, such as corn and cotton. It also needs plenty of water, so the spring drought is more prominent. If it rains at this time, it is naturally very precious, so there is a saying that "spring rain is as expensive as oil".