What do you mean it rains in Mao Mao in Tomb-Sweeping Day?

Before and after Tomb-Sweeping Day, the first generation of the Central Plains was just a warm and humid air flow to the north, which met with cold air from high latitudes. Small scale, wide range, easy to form intermittent spring rain. So there is? "It rains in the Qingming Festival"? A natural phenomenon.

It was in this season that the poet Du Mu traveled, just in time for the rain, so he wrote a famous sentence through the ages.