Snow is the 21st solar term in the 24 solar terms, the time is the Gregorian calendar on December 7 or 8 each year, is also the end of the Calendar year gan Zhi Li Hai and the beginning of the child month; When the sun reaches longitude 255 degrees. Heavy snow means that the weather is colder and the possibility of snowfall is greater than that of minor snow. It does not mean that the amount of snow must be very large. On the contrary, the precipitation of all places has been further reduced after heavy snow.
During the snow season, except for the winterless areas of south China and southern Yunnan,
The average temperature in northeast and northwest China has reached below 10℃, and the temperature in the Yellow River basin and North China has also stabilized below 0℃. At this time, the Yellow River basin has gradually accumulated snow, while in the further north, it has become the northern scenery of "thousands of miles of ice, thousands of miles of snow floating". But in the south, especially in Guangzhou and the Pearl River Delta, it is still verdant and dry, quite different from the climate in the north.