Du Kang is the legendary inventor of alcohol in Chinese myth, often identified with the Xia dynasty. Cao Cao's 《
短歌行》 (c. 208 CE) made 'only Dukang' forever synonymous with wine:
何以解忧?
唯有杜康。 Today
杜康 is also a Henan-based baijiu brand trading on this legend.