When did the cold weather start? What are the rules?

65438+February 22nd is the winter solstice in China. The arrival of the winter solstice solar terms indicates the coldest time. From this day on, China began to enter what people often say, "It's cold for nine days".

The winter solstice is the 23rd day of the Gregorian calendar (65438+February 2 1). According to legend, the winter solstice is the earliest of the 24 solar terms and the first of the 24 solar terms. The winter solstice is an ancient solar term, which is determined by the phenological phenomena, that is, the yang gradually begins to rise. The winter recorded in "Three Rites and Righteousness" written by Cui Lingen of the Southern Dynasties has three meanings: first, it is cloudy, second, it is sunny, and third, it is south, so it is called winter. "The ancients believed that the solstice in winter was a day of struggle between Yin and Yang, and it was a good time to predict the sunny and rainy days in one year and even the human fortune in the coming year.

The solstice in winter has both natural and humanistic connotations. It is not only a natural solar term, but also a traditional festival to worship ancestors and gods.

The ancients said to the winter solstice: When the cathode arrived, Yang began to grow. Chen Zhisui's Collection of Classrooms says: "Summer is the end of the autumn equinox, and spring is the winter solstice." It is also said that the solstice in winter is in the south of the sky, and the days are short and the shadows are long. "Therefore," winter solstice ". The solstice in winter is the natural transformation of yin and yang, which shows that it is extremely beautiful.