What do rain, solar terms and sunny days mean?

Rain and solar terms are sunny, which often indicates that the spring rain will come earlier this year, so there is a folk saying that "after the rain clears, the spring rain comes early."

As the name implies, "spring rain" refers to the rain in spring (between beginning of spring and long summer). As the saying goes, "Spring rain is as expensive as oil". This proverb says that if it rains, the weather will be fine.

Then the first rain in spring will come earlier than normal. The first rain of the year is usually around Tomb-Sweeping Day. "It rains a lot during the Qingming Festival" means that there is more rain before and after the Qingming Festival.