Guess which of the following phenomena occurred in the rainy solar terms?

Plants germinate in rain and solar terms.

Rain, the second of the 24 solar terms. Fight with your fingers; The sun reaches longitude 330; February 18-20 of the Gregorian calendar every year. Rain solar term means the beginning of rainfall, and the rainfall level is mainly light rain or Mao Mao rain. Proper precipitation is very important for the growth of crops, and it is the reflection of farming culture on festivals.

Rainwater solar term: Generally, the rain solar term starts from February 18 to the 20th and ends on March 4th or 5th. 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.

Historical origin of rain solar terms;

Rain is one of the twenty-four solar terms. There are four seasons in a year, three months in spring, summer, autumn and winter, and two solar terms in each month. Each solar term has its own unique meaning. Rainwater solar terms usually mean that rainfall begins and gradually increases. Wu Cheng's book "Twenty-four Solar Terms" in the Yuan Dynasty said: "The first month is aquatic in the sky, and spring is wood. However, people who grow trees must have water, so it rained successfully in beginning of spring.

If the east wind melts, it will disperse into rain. There are phenological descriptions in Yizhoushu, such as "Hongyan is coming" and "vegetation sprouting after rain". The water that nourishes the growth of all things comes from rain. Many of the 24 solar terms directly reflect precipitation, which shows that China ancestors attached great importance to precipitation.