With regard to the chronology of the Yellow Emperor, it is generally said that the first year began in the year when Xuanyuan, the ancestor of Chinese culture, came to power after unifying the Central Plains (that is, "Huaxia") (some people call it "the year when the Yellow Emperor was born"). The earliest formulation of the Chronicle of the Yellow Emperor began with the hand of Liu Zhi, a master of Confucian classics in the late Qing Dynasty. 1903 published the article "Chronology of the Yellow Emperor", saying that "the Yellow Emperor is also the Yellow Emperor of the Han nationality and can feel the Han nationality". Therefore, "if China people want to follow the aspiration of the Yellow Emperor, they should choose their goodness and follow it, and learn from Japan with the chronology of Emperor Jimmu and the meaning of the Yellow Emperor. [1] 1905, Song determined that the first year of the Yellow Emperor's accession to the throne was Guihai, which was 4603 years different from 1905. [2] 19 12 At the beginning of the year, Sun Yat-sen became the interim president and changed the solar calendar. " November 13th, the year of the Yellow Emperor, is the first day of the Republic of China. "[3] Soon after, The Chronicle of the Yellow Emperor disappeared in the history of China. The chronology of trunk and branch is composed of ten branches such as "A, B, C and D" and twelve branches such as "Zi, Ugly, Yin and Mao", which are used to divide and establish the number of trunk and branch yards corresponding to the year, month and day of the Yellow Emperor's chronology and a total of 24 solar terms throughout the year. Among them, the heavenly stems have a period of ten years, and the earthly branches have a period of twelve years. The chronology of trunks and branches begins in Jiazi and ends in Guihai, with a period of 60 years. According to the current general theory, the first year of the Yellow Emperor was either Jiazi [4] or Guihai, which was 2698 years earlier than the first year of AD. The author agrees that the first year of Huangdi is the first year of Jiazi, which is more in line with the traditional chronology of cadres and branches in China. From this calculation, the first year of A.D. is the year of Huangdi in 2698, and the corresponding dry year is Xinyou. A.D. 2008 is the year of Huangdi in 4705, and the corresponding dry year is Wuzi. The first year of the Yellow Emperor's era-2697 BC in 2008 was 4705, so 20 10 is 4707! !