Chen Yuanyuan

Chen Yuanyuan (c. 1623–1689 or 1695) was a Chinese courtesan who later became the concubine of military leader Wu Sangui. In Chinese folklore, the Shun army's capture of her in 1644 prompted Wu's fateful decision to let the Qing armies enter China proper through Shanhai Pass, thereby sealing the fate of the Ming dynasty. Provided by Wikipedia