Which solar term does the number nine start and end from?

Counting nine starts from the solar terms from winter to Sunday, and counts nine "nine days" with nine days as a unit. After counting nine, winter is over and spring is coming. Jiujiu, also called Jiujiu in winter, is a folk method to calculate the date of warm flowers in spring and cold days in China. Law No.9 is passed down from mouth to mouth among the people in our country, which has a history but lacks records. As for when it originated, there is no exact information. In traditional culture, nine is the extreme number, the "highest yang" number and the largest number. The accumulation of "Zhiyang" means that Yin Qi is decreasing day by day, and it is tired to the end, which means that the cold is getting warmer and "the spring is deep".

"99" is the product of farming society, with a long history, which has been passed down from mouth to mouth among the people. It is a summary of the experience of ancient people in production and life practice from generation to generation, using some ecological reflections and meteorological signs in nature. It is quite scientific and still plays a guiding role in the arrangement of people's production and life, so it has been popular and widely circulated in people's mouths and reflected in people's behavior.

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.