清代「漢學」的主流趨勢下，學者依漢儒古義以解經，並相對於十三經注疏另撰新疏。李貽德在此學風影響之下，企慕孫星衍與洪亮吉等乾嘉諸儒之學，汲取既有之成果，輯存賈逵、服虔之《左傳》舊注，依以申述，向新疏之撰成再邁前一步。清儒群經新疏薈萃一代經學的主要成果，而在清代《左傳》學從古義到新疏的發展脈絡中，李氏的著作無疑佔有重要地位。

During the Qinb dynasty, Confucian scholars who came under the influ-ence of the mainstream "Han Learning" often relied heavily on the Han Confucian guyi ( 古義 ) to interpret the Classics. They even went so far as to propose new commentaries vis-à-vis the long-standing Shisanjing Zhushu ( 十三經注疏 ). Given the influence of this scholarly direction, Li Yide ( 李貽德 ) had great respect for the scholarship of Qian-Jia scholars such as Sun Xingyen ( 孫星衍 ) and Hong Liangji ( 洪亮吉 ). Drawing substantially on the results of their works, Li compiled the Zouzhuan ( 左傳 ) commentaries by Jia Kui ( 賈逵 ) and Fu Qian ( 服虔 ), and thereby made significant advancements towards the completion of new subcommentaries. These new commentaries and subcommentaries constituted the major accomplishments of the Qing studies of Confucian Classics. Within the Zouzhuan studies, in particular, Li Deyi's work undoubtedly occupied a vital position in the development from guyi to new subcommentaries.