Is Chun Xue as expensive as oil or spring rain as expensive as oil?

Spring rain is as expensive as oil. This idiom describes that the rain in Mao Mao in spring is very precious and rare. In the south, the rainy solar term is called "ploughing season", and spring ploughing can be started one after another after rain. Because of the rain, all the crops are full of vitality. Before and after the rain, crops grow and the demand for water is higher. "Spring rain is as expensive as oil" is what I mean. The water that nourishes the growth of all things comes from rain. After the spring rain moistens, the earth presents a thriving scene. Er Ya said, "Heaven and earth become Thailand." Heaven and earth blend together to "brew" rain, so spring water is Thai. The word "spring" reflects sunshine, and the word "Thai" reflects rain and dew, which are all needed by everything. From Daoyuan's Legend of Jingdezhen Lights to Jin's Spring Rain.