What is the definition of meteorological winter?

Meteorological winter is defined as the winter when the average temperature is lower than 10℃ for five consecutive days. Traditionally, China takes "beginning of winter" in 24 solar terms as the beginning of winter and beginning of spring as the end of winter, which also refers to 10 month,1/month and1February in the lunar calendar.

What are the solar terms in winter?

The solar terms in winter include beginning of winter, light snow, heavy snow, winter solstice, slight cold and severe cold. Beginning of winter is the first solar term in winter, which means that the weather begins to transition from autumn to winter.

The winter solstice is also called "Winter Festival" and "Happy Winter". The ancients attached great importance to the solstice in winter and thought it was a "good day" There is even a saying that the winter solstice is as big as a year.

Great cold is the last solar term in winter and the last solar term among the 24 solar terms, and it is the coldest time in some parts of China.