What does the great cold mean? What does the great cold mean?

A severe cold is extremely cold, and the weather is very cold. Great cold belongs to one of the 24 solar terms in China, and it is also the last solar term in the 24 solar terms.

The Great Cold is the last of the 24 solar terms. It was freezing, and then spring came. Great cold is the end of the 24 solar terms, and winter is coming to an end. You can already vaguely feel the signs of spring coming back.

Twenty-four solar terms: "In mid-December, I met before (slight cold)." Time-sharing, time-sharing, time-sharing and time-sharing quote three rites and meanings: "Great cold is the middle, 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 coldest period of the year in some 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. During this period, railway, post and telecommunications, petroleum, transmission lines, water transport and other departments should pay special attention to taking measures to prevent severe weather such as strong winds and blizzards as soon as possible. Agriculture should strengthen the cold and antifreeze of livestock and wintering crops.

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. "Timing the Weather" is quoted from "Three Rites and Righteousness": "Great cold is the middle, 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. 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, in the great cold solar terms, chicks can be hatched; 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 has frozen to the center of the water, and it is the strongest and thickest.

During the severe cold solar term, the atmospheric circulation is relatively stable, and the adjustment period of circulation is about 20 days. When this circulation is adjusted, there will often be a wide range of rain and snow weather and strong winds to cool down. When the west of 80 degrees east longitude is a long wave ridge and East Asia is a coastal trough, under the influence of northwest wind flow control and constantly supplemented cold air, China will have a sustained low temperature.