Consort Wu, imperial consort rank Huifei (武惠妃; c.698 – 1 January 738[1]), posthumously Empress Zhenshun (貞順皇后, literally "the virtuous and serene empress"), was an imperial consort of the ChineseTang dynasty, during the reign of Emperor Xuanzong. She was Emperor Xuanzong's favorite concubine during her lifetime, and after the death of his wife Empress Wang in 724, she became honored like an empress inside the palace, court, by the emperor and among the public until her death; Thus, she was the undisputed mistress of the palace, and wielded political power in the court and influence over the decisions of Emperor Xuanzong. She never formally became empress on account of her father Wu Youzhi (武攸止) being a nephew of Emperor Xuanzong's grandmother Wu Zetian, the memory about whose takeover of the Tang throne terrified the officials. But the power she gained within the palace and the political circles of the court, and the love of Emperor Xuanzong for her, made her authority and respect equal to the authority and respect of the empress.
^([开元二十五年]十二月丙午,惠妃武氏薨,追谥为贞顺皇后,葬于敬陵。) Jiu Tang Shu, vol.09. Lady Wu's biography in Old Book of Tang indicate that she was in her 40s when she died.