When did the winter count nine start? What's the difference every year?

China has been in cold weather for several years since the winter of November.

Astronomical experts said that "the Ninth Five-Year Plan" is a more applicable solar term in northern China, especially in the middle and lower reaches of the Yellow River.

From the day of winter solstice, it entered the "number nine", commonly known as "cross nine", and then every nine days as a unit, called "nine". After nine "nines", it happens to be 8 1 day, that is, "nine out", and then spring blossoms.

Every year, the number 9 begins on the day of the winter solstice and is fixed. According to the date, it is either 65438+February 22 or 65438+February 23, but the end time can be considered unchanged.

"Count to nine" represents the coming of severe winter. March is the coldest time of the year, and then it gets warmer gradually: 1929 is out of reach, 3949 walks on the ice, 5969 looks at willows across the bank, 799 rivers open, 899 geese come, 999 is cold, and spring warms bloom.

Therefore, "Nine" is used to reflect the general law of weather changes after winter.

It is reported that "Nine" was formulated by Deng Ping and others in the Western Han Dynasty.