What does Ding Si mean? Ding Si explained.

1 and Ding Si [4] are one of the main branches, and the order is fifty-four. The former is Chen Bing, and the latter is Wuwu. On the theory of yin and yang and five elements, the heavenly stems belong to yin fire and the earthly branches belong to yin fire, which is a good ratio.

2. The fifty-fourth year of a cycle in the traditional calendar of China is called "Ding Sinian". In the following Gregorian calendar years, if the number of years is divided by more than 60 and 57, or the number of years is reduced by 3, the remainder divided by 10 is 4, and the remainder divided by 12 is 6. The year from the first day of the first month of that year to the New Year's Eve of the following year is "Ding Si Year".