The origin of 99 solar terms

Jiujiu is a general term used by ancient people in China to indicate the date of winter solstice or summer solstice to 8 1 day in the future.

The solstice after 8 1 day in winter is called "Winter 99", and the solstice after 8 1 day in summer is called "Summer 99". This term is still very popular. And folk generally refers to winter 99. Every nine days is a nine, which is called the ninth day, the second day, the third day, until the ninth day, which is called "counting nine cold days". This is for the winter in climate.

Summer 99 is usually compiled into agricultural proverbs according to climate change: for example, "the summer solstice enters the ninth day, and the feather fan is in hand;" In 29 18, I took off my crown and put on a scarf; On March 27, I went out to sweat; Four, nine, thirty-six, open-air rolling seats; In 5945, autumn was like a tiger; 6954, enter the temple to enjoy the cool; 7963, touching the sheets at the bedside; 8972, looking for a quilt in the middle of the night; 998 1, open the cupboard to get cotton-padded clothes. "