"Counting Nine Songs" is an image description of the coldest period in a year after the winter solstice in China. Counting Nine Songs is also called Ninety-nine Words, and its full name should be Ninety-nine Songs to Eliminate Cold. According to the traditional calendar of China, every nine days is a time period from the day after the winter solstice, and there are nine time periods in * * *. The first nine days are called 99, followed by 29, 39, ... 99, collectively called "99". According to Liang's Chronicle of Jingchu in the Southern Dynasties, there was a custom of nine at that time: "The number of days in the winter solstice, 9981 is the end of the cold." Here, the number of days from winter solstice is different from the current calendar, but it may be true. Later chronicles also said that the number of days from winter to solstice was nine days. In the whole winter, the weather is cold for 998 1 day. After this time, the weather will get warmer and the earth will be spring.