Zhang Yizhi
In 700, Zhang Yizhi was on one occasion offended by the official Yang Yuanxi (楊元禧)—a grandnephew of the Sui Dynasty chancellor Yang Su, who had been believed to be involved with Emperor Yang of Sui in killing Emperor Yang's father Emperor Wen of Sui. Zhang Yizhi retaliated against Yang Yuanxi by arguing to Wu Zetian that family members of Yang Su should not be allowed to serve in the capital, and Wu Zetian agreed, demoting Yang Yuanxi and his brother Yang Yuanheng (楊元亨) out of the capital Luoyang.