纣王妲己
[zhòu wáng dá jĭ]
Suzwang Daji. Here '纣王 (Su Zhong, Suzwang)' was one of the most notorious emperors in Chinese legend history, noted for being cruel but also indulged by his concubine named '妲己 (Da Ji)' until the empire fell. This could be used to imply a relationship marked by infatuation with someone considered destructive.