Yang Zhi
Yang Jun was from Huayin in Hongnong Commandery (弘農, roughly modern Sanmenxia, Henan). His niece Yang Yan was Emperor Wu's first wife and empress. As she neared death in 274, she feared that whoever would be empress next would endanger the crown prince status of her developmentally disabled son, Sima Zhong. She therefore asked Emperor Wu to marry her cousin, Yang Jun's daughter Yang Zhi. Emperor Wu agreed, and after her death later during the year, he married Yang Zhi in 276 and created her empress. Yang Jun, as the empress' father, became an increasingly important official in government, and became exceedingly arrogant. In Emperor Wu's later years, when he became obsessed with feasting and women, Yang Jun and his brothers Yang Yao (楊珧) and Yang Ji (楊濟) became effectively in power.