Shuowen Jiezi
The Shuowen Jiezi is a Chinese dictionary compiled by Xu Shen c. 100 CE, during the Eastern Han dynasty (25–220 CE). While prefigured by earlier reference works for Chinese characters like the Erya (c. 3rd century BCE), the Shuowen Jiezi contains the first comprehensive analysis of characters in terms of their structure, where Xu attempted to provide rationales for their construction.