Chronology refers to accurately recording the time of historical phenomena in words. China has a long history, which has been recorded in writing since Shang Dynasty, but it was not recorded until the middle of Western Zhou Dynasty. According to the information left by predecessors, Sima Qian clearly recorded the major historical events in the first year of the Western Zhou Dynasty and thereafter in Historical Records. * * * and the first year, that is, 84 BC1year, the history of our country began to have an exact date.
Extended data:
Chronological method of the year when princes ascended the throne: chronology is based on the number of years when princes reigned. For example, "Zuo Zhuan's Battle of Dice": "In the spring of thirty-three years, Qin passed the North Gate of Zhou Dynasty." I stayed in Lu Xigong for thirty-three years. Biography of Lian Po and Lin Xiangru: "In the sixteenth year of Huiwen, Lian Po was General Zhao."
Chronological method of year number: There has been a year number since Emperor Wu of the Han Dynasty. Since then, every emperor has to change the throne and mark the year with the year number.
Chronology of cadres and branches: such as the tomb tablet of five people: "Duke Zhou was arrested in Jude and looked at Ding Mao in March." Ding Mao "refers to AD1627; Preface to Biography of Seventy-two Martyrs in Huanghuagang: "The worst death was the siege of Guangdong and Guangxi on March 29th,191. "Xinhai refers to the year of 19 1 1;" Letter to his wife ","Xin Wei reads six nights and four drums in March ",and" Xin Wei "should be Xinhai.
The use of the year number is both for cadres and branches: the year number of the emperor is placed in front of the year number, and the year number of the cadres and branches is listed behind.
In the Warring States period, years were marked by stars. The year-old star is Jupiter, which orbits the sun from west to east with 1 1.86. The ancients found that Jupiter appeared in the same position in the sky about 12 years later, so they divided the week into 12 equal parts, and each equal part was called a star, representing one year, and named it after it.
The chronology of the zodiac is a chronology method closely related to the branches in China, with the names of the twelve Xiao beasts as the corresponding year numbers and branches.
References:
Baidu encyclopedia-chronology