What is the ninth song?

Counting Nine Songs, commonly known as Jiujiu Songs, is a folk proverb of Han nationality and a popular peasant ballad in winter. Nine days is nearly three months, which is a long time. From the ninth day to the ninth day, it is a gradual process from cold winter to warm spring. Starting from the winter solstice, nine days are counted as a unit, and nine days are counted continuously. By the 8th1day, winter had passed.

Nine Songs vividly recorded the climate and phenological changes between the winter solstice and the vernal equinox, and expressed some laws of agricultural activities. "Ninth Five-Year Plan" is a suitable solar term in northern China, especially in the middle and lower reaches of the Yellow River. The ballad is as follows: 19, 29 Don't shoot; Walking on the ice on March 9 and April 9; 59 and 69, watching willows by the river; Seven or nine rivers open, and eight or nine geese come; 99 plus 19, plowing cattle everywhere.