Xiaoxue solar term is the 20th solar term among the 24 solar terms and the first solar term after beginning of winter. As the Siberian low pressure moves eastward, a large range of cold air moves southward, causing a large area of cooling weather in eastern China. When strong cold air affects, it is often accompanied by the first snowfall after winter, but the amount of snow is not large.

The 24 Solar Terms

Twenty-four solar terms are special festivals in the calendar to express natural rhythm changes and establish "December construction". Four years old, three months in spring, summer, autumn and winter, two solar terms each month, each solar term has its own unique meaning. Twenty-four solar terms accurately reflect the change of natural rhythm and play an extremely important role in people's daily life.

"Twenty-four solar terms" is the product of ancient farming civilization. It is a knowledge system formed by ancient ancestors following the farming season and observing the movement of celestial bodies to understand the changing laws of seasons, climate and phenology in a year. The twenty-four solar terms were originally formulated according to the changes of stars. The Big Dipper rotates circularly, and bucket handle rotates clockwise once, which is called one year old.

Refer to the above content: Baidu Encyclopedia-Twenty-four solar terms