Slight cold is the fifth solar term in winter. When the longitude of the sun reaches 285 degrees, that is, 65438+20221October 5, the slight cold arrives on time. A slight cold means that we are about to enter the coldest day of the year. The origin of the name of the slight cold solar term is explained in the twenty-four solar terms: the solar term in December, when the cold is still small at the beginning of the month, is cloudy and cloudy for half a month. The slight cold solar terms have a long history and play a huge role in daily life and agricultural activities.

Why is slight cold colder than cold?

Looking at the literal meaning alone, some people will think that the great cold is colder than the slight cold. In fact, under normal circumstances, slight cold is colder than great cold. In the last solar term of the slight cold, the ground gets the least amount of solar heat, but some heat can still be emitted upward in the deep soil, so the winter solstice is not the coldest time of the year. In the slight cold, the heat in the deep soil is lost to the lowest point. Although the days are slightly longer and the amount of light and heat of the sun is slightly increased, it is actually the most difficult time to make ends meet, so it becomes the coldest season all year round. From the winter solstice, September 9 and March 9 are the coldest time periods, and they always belong to the slight cold solar terms. There are anonymous words in Song Ci. The cold season is the same as the clouds and the wind is fierce, just to write about the cold of the slight cold. In most cases, slight cold is colder than cold.

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