How to explain Dai Sheng's arrival in San?

From Dai Sheng to Mulberry, it means that Dai Sheng birds have been seen on mulberry trees and other trees since Grain Rain.

Grain Rain has the meaning of "Rain gives birth to hundreds of valleys". In ancient China, Grain Rain was divided into three stages: the first stage was when Ping was born, the second stage was when pigeons brushed their feathers, and the third stage was when Dai Sheng fell mulberry.

"Duckweed begins to grow", "Pigeons blow feathers" and "Mulberry falls in Dai Sheng" refer to that after Grain Rain, duckweed begins to grow due to the increase of rainfall, and cuckoos keep shaking their feathers and can't help singing enthusiastically. Dai Sheng birds are also beginning to be seen in mulberry trees and other trees.

Extended data

The main feature of the weather in Grain Rain is rainy, which is beneficial to grain growth. In Grain Rain season, in the south of China, "a hundred flowers blossom", willows fall, cuckoos cry at night, peonies bloom and cherries are ripe. The natural scenery tells people that it is late spring.

At this time, the temperature rises rapidly. Grain Rain is the last solar term in spring. At this time, just after planting seedlings and planting new crops in the field, rain is most needed, so there is a saying that "spring rain is as expensive as oil". After the solar term in Grain Rain, the rainfall increased and the humidity in the air gradually increased.