Emperor Gong appeared to be even more powerless than his father and brother, and the power remained in Yuwen's hands. He created his wife, Princess Ruogan, empress. Later in 554, Yuwen poisoned the deposed Emperor Fei to death. Later that year, an army dispatched by Yuwen and commanded by Yu Jin () captured rival Liang Dynasty's capital Jiangling (江陵, in modern Jingzhou, Hubei), capturing and executing Liang's Emperor Yuan. In spring 555, Emperor Gong created Xiao Cha, a nephew of Emperor Yuan, the Emperor of Liang (as Emperor Xuan), but Xiao Cha was not recognized by most of Liang generals and officials, who instead recognized Xiao Yuanming, a candidate supported by Northern Qi, as emperor. (Xiao Cha's state is known as the Western Liang in history.)