Jia Nanfeng
Following the death of Sima Yan, posthumously Emperor Wu of Jin, in 290, a complex power struggle known as the War of the Eight Princes erupted among the Sima clan. The new emperor, Emperor Hui of Jin, was developmentally disabled. The emperor's stepmother, Empress Yang Zhi, exerted the most power at court and empowered the Yang consort clan, with her father Yang Jun with authority. The emperor's wife, Empress Jia Nanfeng, was not happy with being excluded from this state of affairs. She enlisted the help of Sima Wei and Sima Liang. Sima Wei's troops entered Luoyang unopposed by the central government. In 291, Empress Jia issued an edict accusing Yang Jun of treason. Yang Jun was killed by Wei's troops, the empress dowager was starved to death under house arrest, and 3000 members of the Yang clan were executed.