Abstract: The Classic Studies of the Spring and Autumn in the early Qing period witnessed a clear break from the abstract and speculating style of classic studies featuring the Song，Yuan and Ming dynasties. Gu Yanwu advocated a new style of classic study with through collection of previous exegeses. Zuozhuan
，or Exegeses of Spring and Autumn by Zuo，had been put into a priority in the studies of Spring and Autumn because it was the oldest and the most concise narrations about the book. Gu's emphasis on Du Yu's Note on Zuozhuan greatly influenced the School of Han Learning in the Qianlong and Jiaqing periods. And his questioning on whether Zuozhuan precisely conveys Confucius's meanings echoed a rather common mistrust of Zuozhuan's many understandings of Spring and Autumn in a long scholarly history.