How's the weather?

"Jiujiu", also known as "Winter Jiujiu", is a folk solar term of the Han nationality. The "Ninth Five-Year Plan" starts from the date of "Winter Solstice" every year (February 2, 65438 1 or 22), and every nine days is a unit, with a total of 81day.

There are many traditional customs in Han nationality, among which "Jiujiu Song" is the most extensive and has a long history. These songs skillfully use the phenological phenomena in nature and vividly reflect the laws of weather changes during the Ninth Five-Year Plan period. As far as most parts of China are concerned, the weather is not the coldest from 1929 to 29, but "1929, I can't reach it." Most of March 9 and April 9 belong to the slight cold solar terms, which is the coldest time of the year, so we say "March 9 and April 9, freezing women to death". After May 9, the earth gradually rejuvenated and the weather gradually warmed from cold, so "May 969, look at the willows by the river; 7989, walking alone. " By 1999, it was already a "thunder" solar term, so the thunder of 1999 made a lasting noise.