Overview of severe cold solar terms

The Great Cold is the last of the twenty-four solar terms, and it is called "Great Cold" when the sun reaches 300 degrees of the yellow meridian around 65438+1October 20th every year. Great cold refers to extremely cold weather. Time-sharing, time-sharing, time-sharing and time-sharing have three meanings: "Great cold is the middle and shaped by slight cold, so it is called great ... extremely cold, so it is called great cold." At this time, the cold wave frequently goes south, which is the cold period of the year in most parts of China. The wind is strong, the temperature is low, and the snow on the ground does not melt, showing a cold scene of ice and snow. The Great Cold is the last of the 24 solar terms in China. After the great cold, a new year's solar cycle is ushered in.

As the saying goes: "When flowers and trees control the season, birds sing to report the farming season." Flowers, trees, birds, beasts and birds all move with the seasons, so their regular movements are regarded as an important symbol to distinguish seasonal solar terms. In ancient China, the Great Cold was divided into three stages: "One stage is chicken milk; Second, the symptoms of bird disease; Three times, the water is strong. " In other words, chickens can be hatched in the cold solar terms. Falcons such as eagles are in a state of strong predation ability, hovering in the air to find food to supplement their body energy to resist the cold; In the last five days of the year, the ice in the water area has frozen to the center of the water, and it is the strongest and thickest, so children can enjoy skating on the river (the average daily temperature can only be below -5℃ for several consecutive days, and this activity usually appears in the north of the Yellow River). In addition, the Hua Xinfeng symptoms of severe cold are "Daphne, Orchid and Alum (born in Jiangnan)". It can also be used as an important sign to judge the severe cold.