What is a slight cold?

In ancient China, the "slight cold" was divided into three stages: "First-class Yanbei Township, second-class magpies started their nests, and third-class pheasants started their lives." ?

The ancients believed that the geese among migratory birds migrated along the yin and yang, when the yang had moved, the geese began to migrate northward; At this time, magpies can be seen everywhere in the north, feeling the yang and starting to build nests; The word "pheasant" means singing. As April 9th approaches, pheasants can sing.

The slight cold solar term originally originated in the Yellow River Basin. It is said that in the early years, every farmer in the Yellow River valley used the "Nine-Nine Cold Map" to keep out the cold and keep fit.

Weather characteristics of slight cold

The weather of slight cold is characterized by getting colder and colder, but it is not cold yet. In the slight cold season, the direct point of the sun is still in the southern hemisphere, and the heat in the northern hemisphere is still in a state of loss. The heat absorbed during the day is still less than the heat released at night, so the temperature in the northern hemisphere continues to decrease. The climate in south and north of China is quite different.

According to China's long-term meteorological records, the slight cold solar terms in the northern region are colder than the severe cold solar terms; But for most parts of the south, the big cold solar terms are colder than the small ones.

Refer to the above? China Meteorological Network-Interpretation of Slight Cold Solar Terms