Zuo Zhuan studies the history of the pre-Qin period, but why is it about Lu?

1. Because Zuo Zhuan was written by Lu (Zuo Qiuming), the part of Lu is more detailed, so you can say that the history of the Spring and Autumn Period is reflected by the situation of Lu to some extent;

2. Zuo Zhuan is not only about Lu, but also describes the political, military, diplomatic and other major events and related speeches of various countries in the Spring and Autumn Period, as well as heaven, ghosts and gods, divination and dream occupation. The author recorded everything that can be used for reference and suggestions.

The original name of Zuo Zhuan was Zuo's Chunqiu, and it was renamed Chunqiu Zuozhuan in Han Dynasty. According to legend, it was written by Zuo Qiuming at the end of the Spring and Autumn Period to explain Confucius' Spring and Autumn Annals. Zuo Zhuan is an independent history book in essence. It began in the year of Luyin (722 BC) and ended in the 14th year of Lu Daogong (453 BC). Based on the Spring and Autumn Annals, it illustrates the outline of the Spring and Autumn Annals by describing the specific historical facts of the Spring and Autumn Period, which is one of the important Confucian classics.