War of the Eight Princes
Jia Nanfeng (257–300), nicknamed Shi (峕), was a Chinese empress consort. She was the daughter of Jia Chong and first wife of Emperor Hui of the Jin dynasty and also the granddaughter of Jia Kui. She is commonly seen as a villainous figure in Chinese history, as the person who provoked the War of the Eight Princes, leading to the Wu Hu rebellions and the Jin Dynasty's loss of northern and central China. Between years 291 to 300, she ruled Jin empire in behind the scenes by dominating her developmentally disabled husband.