What is the knowledge about slight cold?

The knowledge about slight cold is as follows:

1, which is the same as severe cold, mild summer, severe summer and early summer, is a solar term indicating temperature change.

2. The weather characteristics of slight cold are: it turns cold, but it is not cold yet.

As the saying goes, "March 9th is cold". "Sanjiu" is mostly from 65438+1October 9 to 17, which is also within the slight cold solar terms. But this is just a general rule. In a few years, a bad cold may be colder than a mild one.

4. The story of Han Xiao described by the ancients is like this: first-class Yanbei Township, second-class magpies built nests, and third-class pheasants built nests. Wild geese move northward, magpies build nests, and pheasants sing.

5. The principles of sports in the slight cold season: First, start sports after sunrise, and second, exercise preparation should not be sloppy.