2. Legend has it that it was written by Zuo Qiuming at the end of the Spring and Autumn Period to explain Confucius' Spring and Autumn Annals. It began in the year of Lu Yin (722 BC) and ended in the twenty-seventh year of Lu Aigong (464 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.
3. It was called Zuo's Spring and Autumn Annals in the Western Han Dynasty, and was renamed Chunqiu Zuozhuan after the Eastern Han Dynasty. It is also called "Three Biographies of Spring and Autumn" with Biography of Ram and Biography of Gu Liang.