What does it mean to have sleet in ancient times?

1, ancient sleet: "sleet, no rest." This proverb comes from Tian Wu Jia Xing Astronomy in Yuanlou Yuanli. It means that the rain is mixed with snowflakes and it will rain endlessly. It means that sleet often lasts longer. The light snow solar term is very easy to form "sleet" weather, because it is beginning of winter at this time, and the temperature is still in a state of high and low, which is not very stable.

2. In agriculture, sleet means that farmers need to always pay attention to the growth of winter crops in the field.