Chunqiu Jing is a chronicle history book of various countries in the pre-Qin period, and its compilation feature is: 1, which arranges related historical events in chronological order. Chronological history books take time as the center and record historical events in the order of year, month and day. Because it takes time as longitude and historical events as latitude, it is easier to reflect the connection of various historical events in the same period. 2. The language used in Spring and Autumn Annals is extremely concise, but almost every sentence implies the meaning of praise and criticism, which is called "Spring and Autumn brushwork" by later generations and "speaking lightly of righteousness". Whether Chunqiu is a historical book or a classic determines the nature and value of Zuozhuan. The logic of this lies in that the premise of Zuo Zhuan Chun Qiu is that Chun Qiu is a classic with a slight meaning, which has something to do with whether Chun Qiu was written by Confucius or not. Whether Chunqiu was written by Confucius, whether it is a history or a classic, not only determines the status and nature of Chunqiu, but also determines the status and nature of the three related biographies of Chunqiu. "Since the Spring and Autumn Annals was upgraded to a classic, although a few scholars once doubted it, it is difficult to put the influence of this cultural identity into deep consciousness. This is indeed a true fact in the history of Confucian classics. " Source: Young writers