What is the reason for the cliff cooling in many places?

Cliff-type cooling, indicating the weather phenomenon of sudden drop in temperature, through? Cliff. This geographical term vividly illustrates the degree of cooling.

Affected by strong cold air, the temperature in the central and eastern regions has dropped significantly. The temperature in parts of North China and Northeast China has dropped by 10- 12℃ in a single day, accompanied by gusts of 7-8. There will be heavy snowstorms in parts of Northeast China, so the public should pay attention to prevention.

Strong cold air affects the northwest and northeast, bringing cooling, rain and snow. Monitoring shows that snow or sleet1~ 7mm falls in parts of Xinjiang along Tianshan Mountain, central and western Gansu, northern Ningxia, eastern Inner Mongolia, southern Heilongjiang and northern Jilin. In eastern Xinjiang, central and western Gansu, Qinghai, Inner Mongolia and northwestern Hebei, the temperature dropped by 6 ~ 8℃, and in central Inner Mongolia it reached 10 ~ 12℃. In eastern Jilin, Liaoning, southeastern Heilongjiang, eastern North China, eastern Huanghuai and other places, the temperature drop can reach more than 10 ~ 12℃. There are 4 ~ 6 northerly winds and 7 ~ 8 gusts in most areas north of the Yangtze River.

There is light snow or sleet in parts of the eastern part of Northeast China, the western mountainous areas of southern Xinjiang and southwestern Tibet. Among them, there are moderate to heavy snow and local snowstorms in parts of southeastern Jilin and western mountainous areas of southern Xinjiang. There is light rain in parts of southeastern Tibet, southwestern Yunnan and eastern Taiwan Province Island.

Keep your back warm: Chinese medicine believes that the back is inhabited by kidney veins, and colds often start from your back. Therefore, keeping the back warm can not only prevent colds, tonify the kidney and strengthen the waist, but also prevent the recurrence and aggravation of old diseases. Therefore, it is best for the elderly to add a vest in winter. It is advisable to use cotton or silk floss, which has good heat preservation and cold preservation performance. Wear clothes when you get up at night to prevent catching a cold.

Keep feet warm: Medical experts believe that feet are far away from the heart, with less blood supply, thin fat on the instep, and poor thermal insulation, and they are most sensitive to cold stimulation. If your feet catch cold, your whole health may be affected. Therefore, the elderly should wear thick socks and cotton shoes as soon as possible in winter to warm their feet and strengthen their kidneys. People with a history of frostbite should wear it early. In addition, before going to bed at night, scalding your feet with hot water and rubbing the Yongquan point in the center of your feet to maintain good peripheral blood circulation is conducive to health care.