1, Chunqiu is chronological, with only a rough record of historical events. Zuo Zhuan is a detailed description of some things recorded in Chunqiu.
2. The Spring and Autumn Annals is one of the six Confucian classics in ancient China. It is also the national history of Lu in Zhou Dynasty. According to legend, Zuo Zhuan is a historical book with comments on the Spring and Autumn Annals, and it is also called Three Biographies of the Spring and Autumn Annals together with Biography of the Ram and Biography of Gu Liang.
According to legend, Chunqiu was written by Confucius and Zuozhuan was written by Zuo Qiuming.
Extended data:
The contents recorded in Chunqiu mainly include the following aspects: first, the political activities at that time, including the conquest and alliance between governors, which was an important event at that time; Chunqiu also recorded some natural phenomena, which is now an important historical material in astronomical history. In addition, Chunqiu also involves some funeral customs.
If we want to read Chunqiu now, we should read the scriptures attached to Zuo Zhuan, Ram and Gu Liang. Chunqiu itself is not a one-way street. In ancient times, in fact, Spring and Autumn Annals and Three Biographies were not parallel at first, but were popular separately.
Baidu Encyclopedia-Chunqiu
Baidu encyclopedia-Zuo zhuan