displeased with the chancellor Wei Yuanzhong, as Wei had repeatedly rebuffed the promotion of their brother Zhang Changqi (張昌期) and had publicly humiliated another brother, Zhang Changyi (張昌儀). When Wu Zetian suffered a minor illness, the Zhangs became concerned that if Wu Zetian had died, they would be killed by Wei, and therefore falsely accused Wei and a favorite of Princess Taiping, Gao Jian (高戩), of having speculated about Wu Zetian's death. They persuaded the official Zhang Shuo to falsely corroborate the accusations against Wei, although, once Zhang Shuo was brought into Wu Zetian's presence, he not only recanted the accusation against Wei but further accused the Zhangs of suborning perjury from him. As a result, Wei, Gao, and Zhang Shuo were all exiled, but none of the three suffered death. Zhang Yizhi further accused eight people who held a send-off feast for Wei of treason, but was not successful in getting the eight men executed. In 704, Zhang Yizhi was accused of corruption, and as a result of the investigation, Zhang Changyi and another brother, Zhang Tongxiu (張同休), were removed from their offices. The imperial censor Song Jing, who had long resented the Zhangs, volunteered to investigate Zhang Yizhi and Zhang Changzong, and Wu Zetian publicly agreed, but then sent Song out of the capital to investigate Qutu Zhongxiang (屈突仲翔) the commandant at You Prefecture (幽州, roughly modern Beijing), giving the case instead to the minister of ceremonies, Cui Shenqing (崔神慶), who knew that she wanted them spared, and therefore cleared them. Death By early 705, Wu Zetian was seriously ill, and the chancellor Zhang Jianzhi, believing that the Zhangs' power threatened Li Xian's succession, entered into a coup plot with the other officials Cui Xuanwei, Jing Hui, Huan Yanfan, and Yuan Shuji. They rose on February 20 and went to see Li Xian and, after receiving his assent, took their forces into the palace and killed Zhang Yizhi and Zhang Changzong at Yingxian Courtyard (迎仙院); their brothers Zhang Changqi, Zhang Tongxiu, and Zhang Changyi were also killed, and the five men's heads were hung at Tianjin Bridge (天津橋), one of the entries to Luoyang. The officials then forced Wu Zetian to yield the throne to Li Xian (as Emperor Zhongzong), ending Zhou Dynasty and restoring Tang Dynasty. In 750, during the reign of Wu Zetian's grandson Emperor Xuanzong, Zhang Changqi's daughter submitted a petition defending her father and