What does Gengri mean in the Yellow Calendar?

1, Geng: In ancient China, time was recorded by combining heavenly stems and earthly branches. The number of heavenly stems is 10, which is A, B, C, D, E, G, Xin, Ren and Gui.

2. It is used to calculate the number of days. As the saying goes, "dog days" are calculated by Geng Day.

It is the first day from the solstice of summer, after the first watch, the second watch and the third watch. The first appearance, according to China's calendar, is the beginning of a real summer.

4. The third Geng Day after long summer is the first day of the solstice.

5. People often say that it is hot in dog days and cold in dog days. March 9 is the season with the highest temperature and humidity in a year, which is divided into early, middle and late days.

6. Calculating the dog days helps ancient people to avoid the harm caused by high temperature.