rainwater rainwater，It is the second solar term in spring。Rain and valley rain、Xiaoman、light snowing、Heavy snow and other solar terms are the same，They are all solar terms that reflect the phenomenon of precipitation，It is a reflection of the ancient farming culture of the season。The rain season marks the beginning of rain，Suitable precipitation is important for the growth of crops。Enter the rain solar term，The cold in northern China is not ending，It still snows in some places，There is no spring yet；Most of the southern region is full of spring，An early spring scene。 [51] The rain season generally starts from February 18 to 20 in the Gregorian calendar，It ends on March 4 or 5。Rainy season，The weather is unpredictable，It is one of the seasons with the most cold wave processes throughout the year，blowing hot and cold，It's still cold at first。When it rains，The direct point of the Sun has also gradually approached the equator from the southern hemisphere，Northern Hemisphere at this time，The number and intensity of sunshine are increasing，Temperatures are warming up faster，Warm, moist air from the ocean began to come alive，And gradually advance north, meet the cold air，Rainfall is formed，However, the rainfall magnitude is mostly light rain or drizzle

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