24 solar terms, why is Xiaoxue University ahead of Xiaohan? You know, cold is the cause and snow is the fruit.

This is related to the traditional thinking of China people. Generally, people in China know the result before they know the reason. The so-called practice makes true knowledge. Only when it snows do we know it's cold. For another example, fallen leaves know autumn, and fallen leaves know autumn. Therefore, light snow precedes slight cold and severe cold, which is a matter of mentality and traditional habits.