What do you mean by the twenty-ninth and thirty-ninth lunar months here? What's special about it?

There is a saying in the China lunar calendar called "Jiujiu", which is used to calculate the seasons. The calculation method is to count from the winter solstice (counting from the winter solstice, it is called "cross nine", which means the beginning of cold), and every nine days are called "nine", the first nine days are called "one nine", and the last nine days are called "two nine" until the ninth, nineteenth and ninetieth days.

The winter solstice is generally around 65438+February 23rd every year, and 90 days span the whole winter. During these three months, the weather gradually turned cold and then warmed up. The "99-99 Cold-dispelling Song" widely circulated in China, commonly known as "99 Song", vividly recorded the climate and phenological changes between the winter solstice and the vernal equinox, and also expressed some laws of farming activities.

Extended data

With the development of history and the integration of northern and southern customs and cultures, "Nine" has been widely spread and became popular in the northern region at the latest in the Southern and Northern Dynasties. Zong Zong of the Liang Dynasty wrote in Jing Chu Sui Ji: "The winter solstice is 998 1 day, which is the end of cold."

There are several nine songs all over the country, but the lyrics are slightly different. People all over the country have compiled various proverbs, ballads and fluency according to different climatic conditions, scenery characteristics, agricultural phenology and customs.

China folk widely circulated "99-year-old songs to relieve cold", commonly known as "99-year-old songs". There are many versions of 99 ballads. Version examples: 1929 did not shoot, walked on the ice in 3949, watched willows along the river in 5969, opened the river in 79, swallowed it in 89, and added 19 in 99, plowing cattle everywhere.