Xue Rui heralds a good year. When is snow called Xue Rui?

As long as it snows in the winter of the lunar calendar, it is snow, that is, from beginning of winter to beginning of spring. Because Xue Rui mainly kills pests rather than traffickers, the snow after beginning of spring is not "Rui", so it can't be called Xue Rui.

As the saying goes, Xue Rui is a good omen. Snow covers the earth in severe winter, so that the temperature around the ground and crops will not drop very low due to the cold current, creating a good environment for wintering crops such as winter wheat. The melting of snow increases the water content of soil, which is beneficial to the growth of crops in spring.

Moreover, it is scientifically proved that the nitrogen content of snow water is five times that of ordinary rain water, which has a certain effect on fertile fields. Therefore, for thousands of years, China people who have been farming in the Yellow River valley are more eager for an overwhelming snowfall in winter. A heavy snow not only brings a bumper harvest for the coming year, but also adds endless courage to the monotonous winter scenery. Therefore, when we step into the long river of China's poems, we will see how endless and surging the waves of poems describing the snow scene are.