What was sixty called in ancient times?

Sixty-year-old Ya, known as "Hua Jia". The word "Huajia" comes from the ancient calendar of China, with 60 years as a cycle, and each cycle is called "Jiazi". Because of the various names of branches, it is also called "Huajia".

Another way of saying it is that there is a white mark at the root of a person's nail. At the age of 60, with the aging of the body, this white mark will disappear, so it is called "flower nail".

People are used to calling people over 60 "people over 60" and "people over 60". "Huajia" is the abbreviation of "Huajiazi", and the origin of this name is closely related to the chronology of branches in ancient China. ?

The main branch is heavenly stems and earthly branches. The heavenly stem is called "stem" and the earthly branch is called "branch", which is a symbol of counting and timing that has appeared in ancient times. There are ten heavenly stems, namely A, B, C, D, E, G, G, Xin, N and G, and twelve earthly branches, namely Zi, Ugly, Yin, Mao, Chen, Si, Wu, Wei, Shen, You, Xu and Hai.

When the combination of ten stems and twelve earthly branches is 60 pairs of non-repetitive counting unit combinations, ten stems are the main ones, starting from "A" and then cooperating with twelve earthy branches in turn. By the tenth branch, all ten branches have been matched, so starting from the first branch, matching with the eleventh branch, and so on, sixty groups are obtained, which are called "sixty jiazi". Sixty years goes round and round, so 60 years old is the year of "flower".

Extended data:

Flower armor also refers to year, age, age, age.

The twelve earthly branches correspond to the zodiac respectively. Son: Zodiac mouse; Ugly: Zodiac cattle; Yin: Zodiac tiger; Thumb: Zodiac rabbit; Chen: Zodiac dragon; Rudder: Zodiac snake; Afternoon: Zodiac horse; No: Zodiac sheep; Shen: Zodiac monkey; Hey: Zodiac chicken; Hey: zodiac dog; Sea: Zodiac pig.

In addition, the twenty-four solar terms are divided into twelve earthly branches, and the length of every two solar terms corresponds to one earthly branch; The twelve earthly branches also correspond to the twelve months of a year. Furthermore, according to the solar calendar of the ancient Mayan calendar, the decimal system is adopted, that is, every thirteen digits enter one, and each digit corresponds to the twelve earthly branches.

References:

Baidu Encyclopedia _ Huajia