What does it mean that the rain gives birth to hundreds of valleys and the catkins are scattered?

Rain gives birth to hundreds of valleys and catkins are scattered. The meaning is as follows:

After Grain Rain, the temperature rose rapidly. From this day on, rainfall began to increase, and catkins also fell one by one.

Catkin, that is, the seeds of willow, has white fluff on it, dancing with the wind, like floating catkin, because it is called catkin.

Grain Rain is the sixth of the 24 solar terms. Every year from April 19 to April 2 1 day, when the sun reaches 30 longitude of the Yellow River, it is regarded as Grain Rain, which comes from the old saying "Rain gives birth to hundreds of valleys". At the same time, it is also the best time for sowing, transplanting and ordering beans. As the last solar term in spring, the arrival of Grain Rain solar term means that the cold wave weather basically ends, and the temperature rises rapidly, which is very beneficial to the growth of cereal crops.

Extended data:

Twenty-four solar terms refer to the special festivals in the dry calendar that indicate the season, phenology, climate change and the establishment of "December construction". Initially determined by the bucket handle direction of the Big Dipper, bucket handle rotates around the east, south, west and north for a period of time, which is called one of the "years old" (photo); Every rotation cycle starts from beginning of spring and ends with the Great Cold.

The current "twenty-four solar terms" are divided by "constant gas method", that is, each solar term corresponds to a certain position that the earth reaches every time it runs 15 on the ecliptic; The method of "fixing qi" divides the sun's annual movement track into 24 equal parts, each equal part is 15, and each equal part is a solar term, which starts from beginning of spring and ends with severe cold. "Twenty-four solar terms" express the unique concept of time between human beings and the natural universe, and contain the long-standing cultural connotation and historical accumulation of the Chinese nation.

"Twenty-four solar terms" reflect the influence of the sun on the earth and belong to the solar calendar category. It is a knowledge system formed by observing the movement of the sun in a year and understanding the changing laws of the four seasons, climate and phenology in a year. It not only plays a guiding role in agricultural production, but also affects the food, clothing, housing and transportation of ancient people, and even cultural concepts. The current lunar calendar absorbs the solar terms of the trunk calendar as a supplement to the calendar, and is adjusted to conform to the tropic year through the leap method, forming a combined calendar of yin and yang.