What is the origin of China calendar?

People's Republic of China (PRC)'s calendar adopts the calendar system of most countries in the world, that is, the AD system. This was decided through consultation at the first plenary session of the China People's Political Consultative Conference in September.

1in June, 949, the preparatory meeting for the new CPPCC was discussed by the sixth group, the Standing Committee and the plenary session, and the plans for the calendar year and the national flag were submitted to the first plenary session of the China People's Political Consultative Conference for consideration. The national flag, national emblem, capital, deliberation Committee and plenary session were fully discussed. On September 25th, Mao Zedong and Zhou Enlai held a forum on the national flag, national emblem, capital and calendar. At the meeting, everyone agreed to adopt the common calendar system in most countries in the modern world, that is, adopt AD as the calendar year of new China. On September 27th, the second of the four resolutions adopted at the first plenary session of China People's Political Consultative Conference was: "The calendar year of People's Republic of China (PRC) adopts AD".