The beginning of the coldest day in winter.

The traditional view has some truth. Generally speaking, the day of the winter solstice is the beginning of the coldest time, because ancient people began to count nine on the day of the winter solstice. Generally, it is the coldest time to count nine to thirty-nine, and spring will come after counting to 8 1 day.

China also eats jiaozi in the north, because jiaozi means to drive away the cold. Up to now, there is a saying that jiaozi is not suitable on the solstice of winter, and no one cares about freezing your ears. As the saying goes, 1 October1day, when winter solstice comes, every family eats jiaozi. This is to commemorate the medical sage Zhang Zhongjing, who gave up medicine in winter solstice.

The winter solstice is the 22nd of the 24 solar terms, and the solar calendar reaches 270? Celebrate every year on the Gregorian calendar 65438+February 2 1-23. The winter solstice is the limit of the sun's southward travel, when the height of the sun in the northern hemisphere is the smallest. On the solstice of winter, the sun shines directly on the tropic of Capricorn. At this time, the sun is the most inclined to the northern hemisphere.

The solstice in winter is the turning point of the sun. After this day, it will go back. The direct point of the sun will move northward from the tropic of Capricorn, and the time of day in the northern hemisphere will gradually increase and the time of night will gradually decrease.

The winter solstice is the beginning of counting nine cold days, which means counting nine days in the winter solstice. The winter solstice was a relatively big solar term in ancient times, and the weather would get colder after the winter solstice. Therefore, according to their own life experience, the ancients came to the conclusion that it was cold for nine days. The ancients thought that after the winter solstice met everyone's day and reached 8 1 day, spring would definitely arrive.