The  Commentary of Zuo  ( Zuo Zhuan ), also known as  Zuoshi Chunqiu ,  Chunqiu Zuoshi Zhuan  and  Chunqiu Neizhuan , is an important chronicle covering the history of the Spring and Autumn Period (770–476 BC). Generally translated as the  Commentary of Zuo , it is traditionally regarded as one of the three major commentaries on the ancient Chinese chronicle  Spring and Autumn Annals  ( Chunqiu ), together with  Commentary of Gongyang  ( Gongyang Zhuan ) and  Commentary of Guliang  ( Guliang Zhuan ).