The beginning of winter: the end of winter, which means that crops must be stored after harvesting. Winter begins on this day. Winter Solstice: The shadow of the sun is the longest, the half-day is the shortest in the Northern Hemisphere, the night is the longest, and the cold weather begins. Eat dumplings during the Winter Solstice. Dumplings are an indispensable holiday meal on the winter solstice in the lunar calendar every year, regardless of whether you are rich or poor. A proverb goes: "On October 1st, when the winter solstice arrives, every household eats dumplings." This custom was left to commemorate the "Medical Saint" Zhang Zhongjing who gave up medicine during the winter solstice.

Chinese folk regard the Beginning of Winter as the beginning of winter. During the Beginning of Winter, there is a food custom that requires supplements to survive the harsh winter.

Li means the beginning of construction, which means that winter begins from now on. Winter means the end, and it means that crops must be stored after harvesting. In China, Lidong is also regarded as the beginning of winter.

At the beginning of winter, the high-altitude westerly jet stream has been fully established in southern Asia. At this time, the strength and eastward movement of the southern branch of high-altitude westerly winds have a great impact on the precipitation weather in the Jianghuai region.

When the Asian region forms a zonal circulation and the south branch of the westerly fluctuates strongly, widespread rainy weather will occur. In addition, the zonal circulation will end and the meridional circulation will be established, and there will be cold waves and substantial cooling.

Before and after the beginning of winter, precipitation decreased significantly in most areas of China. The ground in the north is frozen, and agricultural and forestry crops have entered the overwintering period; the "three autumns" in the Jianghuai region are coming to an end, and in the south of the Yangtze River, people are rushing to plant late-crop winter wheat and transplant rapeseed; in the south, it is the best time to plant wheat. After the beginning of winter, the air generally becomes drier and the soil contains less water. At this time, attention should be paid to fire prevention in forest areas.