What is the origin of heavy snow in the twenty-four solar terms?

The solar term of "heavy snow" falls on February 7 or 8 every year, 10, when the sun reaches 255 degrees of the yellow meridian. "Twenty-four solar terms" said: "At this time, the snow is abundant." Heavy snow means colder weather, and the possibility of snowfall is greater than that of light snow. This doesn't mean that there must be a lot of snowfall. On the contrary, after the heavy snow, the precipitation in various places has further decreased. The average precipitation in June 5438+February in Northeast China and North China is generally only a few millimeters, but less than 1 mm in Northwest China.