Twenty-four solar term song? When did "counting volts" and "counting nine" start respectively?

Jiujiu, also known as Winter Jiujiu, is a folk solar term in China. The number nine starts at the end of winter in 65438+ February of the Gregorian calendar and ends on Everyone's Day. There is no exact information about when the custom of counting nine originated. However, it was popular at least in the Northern and Southern Dynasties. It is recorded in the Chronicle of Jingchu of Liang Chaomu: "The number of winter solstice days is 9981, which is the end of cold." Count nine cold days, that is, from the date of winter solstice to Sunday, count nine days every nine days until 81 days, and the weather will get warmer. In fact, this is "1999 and 1999, plowing cows everywhere" -90 days, which is 9 days.

Sifu, also called several volts in some places. It is said that when the north enters the hottest summer, it usually starts from the early summer, falling every ten days, totaling three volts, so it is also called dog days.

In the China lunar calendar, "Nine" is a habitual miscellaneous festival, including "Nine in Winter" and "Nine in Summer". Among them, "Winter 99" is very popular. It starts from the solstice in winter, and every nine days is a nine. There are 8 1 day in September and September every year. March 9 and April 9 are the coldest seasons of the year.

"Summer 99" starts from summer solstice, and every nine days is 19, with a total of 8 1 day. Similarly, March 9 and April 9 are the hottest seasons of the year. It is in sharp contrast with "Winter 99", but unfortunately it has not been widely circulated. In fact, "Summer of 1999" really vividly reflects the relationship between date and phenology. For example, the "99 songs from summer solstice to the sun", which best reflects the climate characteristics in most parts of China, was recently written on the elm beam in the main hall of Wang Yu Temple in Laohe City, Hubei Province. Its full text is:

Summer solstice into the ninth day, holding a feather fan;

In 29 18, I took off my crown and put on a scarf;

On March 27, sweating when going out;

Four, nine, thirty-six, open-air roll-up seats;

In 5945, autumn was like a tiger;

6954, enjoy the cool into the temple;

7963, touching the sheets by the bed;

8972, looking for a quilt in the middle of the night;

998 1, open the cupboard to get cotton-padded clothes.