The origin of cold dew

Cold dew is a solar term that reflects the characteristics of climate change, and its name comes from the climate characteristics of that time period.

After the cold dew, the height of the sun continued to decrease and the temperature gradually decreased. Cold dew is called "cold dew" because the temperature is much lower than that of Bailu solar terms, and cold produces dew condensation.

"Twenty-four solar terms" said: "In September, the dew is cold and will condense." The meaning in the work is that the temperature of cold dew is lower than that of white dew, and the morning dew on the ground is cold and about to condense. The ancients gradually regarded cold dew as a sign of cold.

Cold dew is the seventeenth solar term among the twenty-four solar terms and the fifth solar term in autumn. Finger e; Longitude of solar arrival195; Gregorian calendar1October 7 -9 10 every year. Cold dew is a festival in late autumn and the beginning of the full moon in the dry calendar. Cold dew is a solar term reflecting the characteristics of climate change. When entering the cold dew, there is cold air going south, the temperature difference between day and night is large, and autumn dryness is obvious.