Why is it getting colder and colder after the solstice in winter?

The weather is generally not very cold before the winter solstice, so there is still "heat accumulation" on the surface, but with the passage of time, cold air frequently goes south and the temperature gradually drops. The real winter is after the solstice winter. Because the heat lost on the surface is greater than the heat received every day from winter to the future, the temperature is getting colder and colder, and the budget deficit of total heat on the ground reaches its maximum in the days of "March 9 and April 9", which is the coldest time of the year.

The custom of winter solstice

Jiaozi is an indispensable food for people in northern China. After the solstice in winter, the weather will get colder and colder. By eating jiaozi, people think they can avoid ear frostbite, because jiaozi looks like a human ear.

Eating jiaozi is very popular in the south of China. This is a kind of glutinous rice balls with different fillings. It can be boiled or fried. People also use it to offer sacrifices or give gifts to relatives and friends.

The tradition of eating wonton on this day comes from the Southern Song Dynasty (A.D. 1 127- 1279). At that time, it was to sacrifice ancestors. Later, this custom became popular.

Because mutton can be used as a tonic food, people will be warm after eating it. In some areas of northern China, people have the custom of eating mutton.

Eating red beans and glutinous rice is also very popular in southern China. After eating, people think that ghosts and evil things can be driven away.