Consort Yang Yuhuan (1 June 719 鈥?15 July 756); often known as Yang Guifei (Guifei being the highest rank for imperial consorts during her time); known briefly by the Taoist nun name Taizhen; was known as one of the Four Beauties of ancient China. She was the beloved consort of Emperor Xuanzong of Tang during his later years. During the Anshi Rebellion; as Emperor Xuanzong was fleeing from the capital Chang'an to Chengdu; she was killed because his guards blamed the rebellion on her powerful cousin Yang Guozhong and the rest of her family.