When does the winter in Chongqing start to cool down? What does beginning of winter mean?

The "beginning of winter" solar term is1October 7th or 8th every year, 165438+. In ancient China, people used to regard beginning of winter as the beginning of winter. Twenty-four solar terms say: "The beginning of the establishment", and say: "Winter is the end, and everything is harvested." In fact, China is a vast country. All winters don't start at the same time except the coastal areas of South China where there is no winter all the year round and the Qinghai-Tibet Plateau where there is no summer in long winter. According to the standard of dividing the four seasons by climatology, if the average temperature in the second half of the year falls below 10℃, it is winter, then the statement that "beginning of winter begins in winter" basically conforms to the climate law in Huanghuai area. In the northernmost part of China, the areas north of Mohe and Daxing 'anling have entered the winter in early September, and the capital Beijing has already seen the winter scene in late June 10, while the winter in the Yangtze River basin didn't really start until around the "light snow" solar term.

Before and after winter, precipitation in most parts of China decreased significantly. Northeast China is frozen, and agricultural and forestry crops enter the wintering period; The "Sanqiu" in the Jianghuai area is coming to an end; Jiangnan is busy planting late-season winter wheat and transplanting rapeseed; On the other hand, South China is the best time to plant wheat in early winter. At this time, the water condition is closely related to the seedling growth and overwintering of crops. The average daily temperature in North China and Huanghuai area will definitely drop to about 4℃.