Do you know the origin of chronology? When did China adopt this chronology?

A.D. Chronology is also called A.D. Chronology for short. The chronology is a Christian chronology. The Latin word of the Middle Ages is Anno Domini, abbreviated as AD, which means "in the year of the Lord". In 525 AD, Dionysus, a Roman monk, thought that the year when Jesus was born was the first year of the era. Before BC, it means BC in English, that is, before Christ. The calendar adopted in AD is called Gregorian calendar. Usually called "Gregorian calendar, Gregorian calendar", it is the current calendar adopted by our government.

China adopts the Gregorian calendar 1949.

Time sequence method is adopted. This was decided through consultation at the first plenary session of the China People's Political Consultative Conference in September. At the meeting, everyone agreed that it should be in line with the world, that is, the year of new China should be AD. On September 27th, the second of the four resolutions adopted at the first plenary session of the China People's Political Consultative Conference was: "The year number of People's Republic of China (PRC) adopts AD". However, China's calendar and summer calendar are still used to calculate traditional festivals in China, such as Spring Festival, Mid-Autumn Festival, Dragon Boat Festival, Tomb-Sweeping Day, etc. (New Year's Day in China has been changed to Gregorian New Year's Day).