What does 2939 mean in the calendar?

In the calendar, 2939 means: count nine from the day of winter solstice, and then every nine days, it is a nine, 2939 is the second nine, and 399 is the third nine.

March 9th and April 9th are the coldest days of the year. The proverb "99 Songs" goes like this: 1929 Don't shoot; Walking on the ice in 3949; 5969 see willows along the river; 79 rivers open 89 geese; 99 plus 19, plowing cattle everywhere.

When you count to nine "nine days", spring will be deep and warm, and everything will be full of vitality. It's time for spring ploughing. Counting nine is a folk method in China to calculate the date of cold weather and warm spring in bloom. Word of mouth in China, a history, lack of records. The number nine method is passed down from mouth to mouth among the people in our country, which has a history and lacks records. As for when it originated, there is no exact information.