Why do you eat jiaozi on the solstice in winter? How did the name Winter Solstice come from? Who named winter the solstice? Why is the winter solstice daytime all year round?

Because at the end of the Eastern Han Dynasty, Zhang Zhongjing, a famous doctor, developed a dietotherapy formula to keep out the cold. In winter, he set up a shed and a pot to cook soup for the poor, boiled mutton with cold-expelling medicine, and made it look like an ear with a flour bag, named "Quhan Joule Soup". After drinking it, people will have fever all over and their ears will be burning, and they will never get frostbite again. Since then, the custom of eating jiaozi on the winter solstice has been passed down.

The ancients had a cloud: the yin arrives, the yang begins to grow, the day is south, the day is short, and the shadow is long, so it is called "winter solstice day". This is the origin of the winter solstice. The so-called "arrival" means the end, and winter is coming. The name "winter solstice" has no specific name.

The reason why the winter solstice is the shortest day in all seasons is that in winter solstice, the sun shines directly at the southernmost tip of the year, and the sun almost shines directly on the Tropic of Capricorn. The sun is most inclined to the northern hemisphere, and the winter solstice becomes the shortest day in all parts of the northern hemisphere. The farther north, the shorter the day is.