The Winter Solstice, also known as the "Winter Festival" and "He Dong", is one of the twenty-four solar terms in China and one of the eight astrological solar terms. The winter solstice begins when the sun reaches 270 ° of the longitude of the yellow, around December 22 of the Gregorian calendar. It is rumored that the winter solstice in the history of the Zhou Dynasty was the New Year's Day, which used to be a lively day.
On the winter solstice, the position of the sun directly on the ground reached the southernmost point of the year, almost directly on the Tropic of Cancer (23 ° 26 'south latitude). On this day, the northern hemisphere receives the least sunlight, 50% less than the southern hemisphere. Days in the northern hemisphere are the shortest, and the day is shorter the further north.
More commonly, there is a custom of eating dumplings in the winter solstice in northern China. As the saying goes: "The winter solstice arrives, eat dumplings." And the south eats dumplings, of course, there are exceptions. For example, the winter solstice in Shandong Tengzhou and other places is called the number nine, and the lamp soup is also very popular.