"Big Cold" is the coldest of the 24 solar terms. Nowadays, most areas in the north have entered a severe cold winter. So for your convenience, let me share with you the characteristics of the 24 solar terms: Big Cold and meaning, welcome to read!

Introduction to the characteristics of the Dahan solar term

Dahan is the last solar term among the twenty-four solar terms. The sun arrives around January 20 every year. When the yellow longitude is 300°, it is called "big cold". Dahan means that the weather is extremely cold. During the Great Cold, the atmospheric circulation is relatively stable, and the circulation adjustment period is about 20 days. When this kind of circulation adjusts, large-scale rain, snow, and windy cooling often occur. When there is a long-wave ridge to the west of 80 degrees east longitude and a large coastal trough in East Asia, my country will experience persistent low temperatures under the influence of northwesterly airflow and the continuous replenishment of cold air.

Like Xiaohan, Dahan is also a solar term that indicates the degree of cold weather. Although modern meteorological observation records show that in some areas of my country, the major cold is not as good as the minor cold, in some years and in a few coastal places, the lowest temperature throughout the year still falls within the major cold solar term. Therefore, we should continue to protect crops from cold, and pay special attention to protecting livestock to survive the winter safely.

During the Great Cold season, the average temperature in most areas of southern China is 6°C to 8°C, which is nearly 1°C higher than the Lesser Cold. The proverb "Small cold and big cold make you a ball of cold" shows that the big cold solar term is also a cold period of the year. Minor Cold and Major Cold are the periods with the least rain in the year.

The origin of the Great Cold

The Great Cold is the last of the twenty-four solar terms. Every year around January 20 of the Gregorian calendar, the sun reaches 300° of the celestial longitude, which is the "Great Cold". During the 9th and 49th periods, cold waves frequently move southward at this time, which is the coldest period of the year in most parts of China. Dahan means that the weather is extremely cold. "Tongkao Tianshi" quoted from "Sanliyi Zong": "The big cold is the middle one, and the upper shape is better than the minor cold, so it is called big... The cold air is the opposite extreme, so it is called big cold." At this time, the cold wave moved southward. Frequent, it is a cold period of the year in most parts of our country, with strong winds and low temperatures. The Great Cold is the last of the twenty-four solar terms in China. After the Great Cold comes the beginning of spring, ushering in a new year of solar terms.

What should we pay attention to during the Dahan solar term?

Xiaohan and Dahan are the two extremely cold solar terms of the year. In the northern region, there is a saying that "hot is in the middle volt (two volts) and cold is in the third volt", which means that the hottest time of the year is in the second volt of three volts, and the coldest time of the year is in the third volt. Thirty-nine days of the year. In the south, "hot is in the three volts and cold is in the 49th day." The hottest is in the 3rd day and the coldest is in the 49th day. The 49th day is colder than the 39th day. The 49th hour is in the Great Cold solar term. In the south, the severe cold is more than A little cold.

The three months of winter are the season when vitality is latent and all things are dormant. At this time, the body's metabolism of yin and yang is also very slow, so you should go to bed early and get up late at this time, and do not disturb the yang energy easily. Don't overwork yourself in everything, keep your mind deep inside and avoid being impatient and angry.

The meaning of the Dahan solar term

In the Gregorian calendar, when the sun reaches 300 degrees of ecliptic longitude around January 20 each year, it is the Dahan, which is the 24th of the twenty-four solar terms. Big Cold, as the name suggests, means the weather is extremely cold. "Shishi Tongkao·Tianshi" quoted from "Sanli Yi Zong": "The Great Cold is the middle one, and the upper shape is better than the Lesser Han, so it is called the Great... The cold air is the reverse extreme, so it is called the Great Cold."

The Three Great Colds Chicken milk

Chicken milk

"Chicken milk" means that the chicken has started to feed its offspring. Why do they start to reproduce at this time? Because hens need a certain amount of sunlight to lay eggs. Before the Great Cold, there is less light, so they rarely lay eggs. That's because hen's ovaries need stimulation from ultraviolet light, and if there is less light, less vitamin D and other mineral elements are needed for egg production. Therefore, when the Great Cold Season begins and the light increases, hens can lay eggs and reproduce.

The second waiting bird is very sick

Another name for "Zhengniao" is "Eagle Falcon", which is a relatively ferocious bird. This bird can carry a small branch in its mouth and cross the Pacific Ocean through hardships. The reason why it holds branches in its mouth is because when it gets tired on the way, it can throw the branches on the sea and stand on it to rest. When it is hungry, it can directly catch fish to eat, and finally successfully cross the Pacific Ocean. Why does this kind of bird become "severely sick" during the Great Cold season? Here "liji" means fierce and fast. The reason why Zhengniao has to become fierce and fast is because the weather is even colder during the Great Cold Season, and he has to forcefully grab more food to resist the cold.

Three seasons of water, belly and firmness

"Shuize" refers to the lake water, "belly" refers to the center of the lake, and "jian" means solid. During the cold season, the ice on the lake will freeze to the center of the lake, and the entire ice surface will become very solid. We can play freely on it at this time. Generally in the last few days of the year, the ice on the lake is thicker. It can be imagined that the weather has been relatively cold these days.

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