Why do you say "spring in winter"?

A simple understanding of the meaning of spring outing in winter is that the climate in spring is like winter, that is to say, the climate seems to have extended a season, and the meaning of winter itself refers to the government decrees implemented in winter. Spring outing means that spring has begun. Together, the weather that should have appeared in winter appears in spring.

Seasons have two main characteristics, one is the periodicity of seasonal changes, and the other is the difference of seasons. There are great differences in climate in different seasons in the same area, mainly in temperature and rainfall. The main reason for these differences is the difference in sunshine.

The change cycle of seasons is generally one year, so in China, a country with four distinct seasons, people often take seasons as the unit of time measurement between years and months. Although the boundaries of this seasonal change are not so obvious, the overall macro differences are still easy to be perceived and recognized.