What does cinnamon mean? Guiwei has never explained.

1 and Guiwei are one of the main branches, and the order is 20th. The former is Renwu and the latter is Shen Jia. On the theory of yin and yang and five elements, the heavenly stem belongs to the water of yin, and the earthly branch does not belong to the soil of yin, but the soil and water are mutually resistant.

2. The 20th year in a cycle of the China lunar calendar is called "Ghost Year". In the following calendar years, if the number of years is divided by more than 60 and 23, or the number of years is reduced by 3, the remainder divided by 10 is 0, and the remainder divided by 12 is 8. The years from the first day of the first month of that year to New Year's Eve of the following year are "no years".

The lunar calendar is a dry calendar, and solar terms are used to guide agricultural production. Branches and branches are not divided into solar terms, regardless of traditional habits or official calendars (see the perpetual calendar compiled by Purple Mountain Observatory of Chinese Academy of Sciences for details).

4. There are ten heavenly stems, namely, A, B, C, D, E, Ji, G, Xin, Ren, Gui, and twelve earthly branches, followed by Zi, Ugly, Yin, Mao, Chen, Si, Wu, Wei, Shen, You, Xu and Hai. The ancients classified Jia Zi, Yi Chou and Bing Yin. It is a cycle in which the sky turns six times and the earth turns five times. There are 60 pairs from Jiazi to Guihai * * *, which are called Jiazi. The ancient Chinese used these 60 pairs of branches to represent the serial numbers of year, month, day and time, and this is the chronology of branches. The last year of Guiwei is a year of the lunar calendar, such as 2003, 1943, 1883+60 years.