Which solar term started, the weather became warmer, snowflakes could not form, and rainy weather gradually increased?

Rain, every February 18 or 19 or 20, means that the temperature rises, the snow melts and the precipitation increases, hence the name rain.

The rain solar term generally starts from February 18 to 20 and ends on March 4 or 5. In rainy and solar terms, the direct point of the sun is gradually approaching the equator from the southern hemisphere. At this time, the sunshine hours and intensity in the northern hemisphere are increasing, and the temperature is rising rapidly. Warm and humid air from the ocean becomes active and gradually pushes northward to meet with cold air, forming rainfall. The rainy season is changeable, which is one of the seasons with the most cold wave processes in the whole year, with cold and hot, warm and cold at first.

It rained three times.

There are three periods of rain, one is when water otters sacrifice fish, the other is when geese come, and the third is when plants sprout. It is said that the solar term of rain has come, the ice on the water surface has melted, and otters have started fishing. Otters like to kill the fish and put them on the shore in turn, just like offering sacrifices, so there is a saying that "Rex sacrifices fish". Five days after the rain, the geese began to fly back to the north from the south. In five days, plants will begin to sprout as the spirit of the sun rises underground. Since then, the earth has gradually begun to show a thriving scene.