Wujing yiyi 五經異義 "Different interpretions of the meaning of the Five Classics" was a commentary on the Five Confucian Classics (Wujing 五經) written during the Eastern Han period 東漢 (25-220 CE) by Xu Shen 許慎 (c. 58-c. 147), who is better known as the author of the character dictionary Shuowen jiezi 說文解字.
The field of Confucian philosophy was during the whole Han period determined by the dispute between the old-text and the new-text schools. Both presented different interpretations of the Classics. Xu Shen was a representative of the Old-Text School, but in his commentary he pointed at the differences in the various interpretations of the Classics.
The original book was lost at the end of the Tang period 唐 (618-907), but fragments of it have survived in a critical commentary on it, the Bo wujing yiyi 駁五經異義 that was written during the very late Han period scholar Zheng Xuan 鄭玄 (127-200), who was the last and ultimate authority of Han-period Confucianism. The commentary of Zheng Xuan is not mentioned in the Suishu jingji zhi, but only in the bibliographic chapters of the histories Jiutangshu 舊唐書 and Xintangshu 新唐書.
The Qing-period 清 (1644-1911) scholar Yuan Jun 袁鈞 (1752-1806) was the first who collected fragments of the Wujing yiyi. These are to be found in his publication Zhengshi yishu 鄭氏佚書 "Fragments of Zheng Xuan's writings". The two scholars Chen Shouqi 陳壽祺 (1771-1834) and Pi Xirui 皮錫瑞 (1850-1908) wrote commentaries on these and further fragments of the Wujing yiyi found in the encyclopaedias Chuxueji 初學記, Yiwen leiju 藝文類聚, Tongdian 通典 and Taiping yulan 太平御覽. These were Chen Shouqi's Wujing yiyi shuzheng 五經異義疏正 and Pi Xirui's Bo wujing yiyi shuzheng 駁五經異義疏證.
An early collection of fragments allegedly compiled by the Song-period 宋 (960-1279) publisher Wang Yingling 王應麟 (1223-1296) was printed as a palace edition (Wuyingdian juzhen banben 武英殿聚珍版本) at the time when the imperial series Siku quanshu 四庫全書 was compiled, with the title Bo wujing yiyi and a length of 10 juan.
Chen Shouqi finally decided to do newly publish and comment all these fragments. He arranged them thematically and added his own commentaries to these sentences. It was printed in the collection of Chen's writings, Chen Zuohai quanji 陳左海全集 and is included in the series Huang-Qing jingjie 皇清經解.
Other editions are Zhengxue sizhong 鄭學四種, Zhengxue wuzhong 鄭學五種, Zhengxue shibazhong 鄭學十八種 and Gaomi yishu 高密遺書.