Zhang Jianzhi
In spring 705, with Wu Zetian continuing to be ill, Cui entered into a plot with a number of officials and generals, including Zhang Jianzhi, Huan, Jing Hui, and Yuan Shuji, to kill the Zhang brothers. With agreement from Li Xian, they acted on February 20, killing Zhang Yizhi and Zhang Changzong, and then surrounding Wu Zetian. While they allowed her to retain the title of "emperor," they had her put under house arrest at the secondary palace Shangyang Palace (上陽宮) and forced her to yield the throne to Li Xian, who was formerly emperor, and he was restored to the throne (as Emperor Zhongzong). As she confronted the plotters, she said to Cui, "All of the others became key officials because of others' recommendations. Only you were personally selected by myself, and yet you stand here with them." Cui responded, "What I do today is to repay your Imperial Majesty's great grace to me."