Abstract: Etymology of Three Hahn: Chen Shou left the phrase “有三種”, which means Three kinds of Hahn, named “馬韓,辰韓,弁韓”, and made a section of Byeon-Jin(弁辰傳). Though the names “馬韓,辰韓” being used without any disputes, “弁韓” had been recorded as “弁韓, 示韓” in Chinese, but Korean used only “卞韓” throughout the history. Decree from emperor Taizong of Tang(克高麗白巖城詔) conformed the location of Byeon-Jin(弁辰傳) as the southwestern region of Manchuria . The adjective logograms “弁, 示, 卞” had been used in China…..