It doesn't snow that day, so why is it called Xiaoxue?

The solar terms of light snow and heavy snow are only symbols of temperature change, cooling down, increasing snow and cooling down.

The light snow in the 24 solar terms is different from the weather forecast.

For example, "light snow" entered the solar term, and the northwest wind began to become a frequent visitor in most areas centered on the Yellow River Basin. The temperature drops, gradually falling below 0℃, but the earth is not too cold. Although it began to snow, the amount of snow was not large, so it was called light snow.

From light snow solar terms to light snow, the 24 solar terms indicates the beginning time and degree of snowfall. Entering the light snow solar term means that the temperature continues to fall, the weather is cold, and the precipitation state changes from rain to snow. Light snow, like solar terms such as rain and Grain Rain, is a solar term reflecting precipitation, which is different from what we call light snow with less snowfall every day.

If the white dew, cold dew and first frost in the previous solar terms were condensed into water droplets and developed into frost due to the drop in temperature, then the light snow was condensed into snow when the cold dropped below zero. From the change of the names of solar terms, we can see the law of ancient people's activities-observing destiny and arranging life and farming with the change of solar terms.

The meaning of light snow solar term "light snow" is a festival that reflects weather phenomena. There is little snow, and there is no snow on the ground. This is the original meaning of the solar term "light snow". The ancient book "Qunfangpu" says: "Light snow will snow when it is cold, and it will not even snow on the ground, and the snow is not big." In other words, due to the cold weather, the form of precipitation changed from rain to snow in the "light snow" festival, but at this time, because the ground is not very cold, the number of snows is small and the amount of snow is not large, so it is called light snow. So light snow indicates the beginning time and degree of snowfall. Light snow, like rain and Grain Rain, is a solar term that directly reflects precipitation.