At the time Cao Huang became emperor, his name was changed to "Cao Huan" because it was difficult to observe naming taboo with the name "Huang" (which was a homonym to many common terms—including "yellow" (黃) and "emperor" (皇)).
Pada saat Cao Huang menjadi kaisar, namanya diganti menjadi "Cao Huan", karena sulit untuk mengamati nama tabu dengan nama "Huang" (yang merupakan homonim ke banyak kata umum—termasuk "kuning" (黃) dan "kaisar" (皇)).