What do you mean nine days?

Jiujiu, also known as Winter Jiujiu, is a folk solar term in China. The number nine begins at the end of winter in 65438+February of the Gregorian calendar and ends on Everyone's Day. There is no exact information about when the custom of counting nine originated. However, it was popular at least in the Northern and Southern Dynasties. "Liang Chao Shu Jing Chu Chun Qiu" records: "The winter solstice is 998 1 day, which is the end of cold." Count nine cold days, that is, count nine every nine days from the winter solstice to the eighty-first day, and the weather will warm up. In fact, it is "99-99, plowing cattle everywhere"-90 days, which is 9 days.

In the traditional culture of China, nine is the extreme number, which is the largest, largest and longest concept. Nine nines is eighty-one, which is the "maximum" number. People in ancient China believed that after the solstice on September 8 1 day, spring must have arrived.

Extended data

Count nine coldest days.

Three nine, four nine. During March 9 and April 9, it coincided with the great cold solar terms. At this time, the wind is strong and the temperature is low, and the snow on the ground has accumulated for a long time. The land is frozen with ice and snow. Later, on May 9th and June 9th, beginning of spring officially arrived, and the weather will gradually warm up and start to enter the spring climate.