killed by Hou, and an opportunity was lost. In spring 549, Xiao Gang tried to negotiate peace with Hou, whose troops had by then tired. Hou initially agreed—with the terms being that he would be given the provinces west of the Yangtze River. However, Hou soon reneged on the peace agreement and resumed the siege of the palace. Soon, the palace fell, and Emperor Wu and Xiao Gang were effectively taken as hostages, although Hou continued to formally honor them as emperor and crown prince, despite his earlier agreement with Xiao Zhengde to have them killed. (Hou soon deposed Xiao Zhengde and killed him.) Xiao Gang's attendants all fled, except for Xu Li and Yin Buhai (). The provincial troops which had come to Jiankang's aid were disbanded, and Hou was now in control of the capital region. Meanwhile, Emperor Wu, while he was under Hou's control, was unwilling to yield, and he refused to carry out some of the acts that Hou wanted him to. Xiao Gang tried to urge Emperor Wu to follow Hou's requests, but Emperor Wu refused. Hou put Emperor Wu under closer guard, and Emperor Wu, in anger, soon grew ill and died. (Some historians believe that Hou starved Emperor Wu to death.) Hou made him emperor to succeed Emperor Wu (as Emperor Jianwen). As emperor Emperor Jianwen was formally recognized by the governors of the provinces not under Hou's control, but they saw his edicts as coerced and not binding on them, and they continued to resist Hou, and yet at the same time fought each other for territorial control and were largely ineffective when Hou attacked them, allowing Hou to seize additional territory. Eastern Wei (and its successor state Northern Qi, established in 550 as Gao Cheng's brother Gao Yang seized the throne from Emperor Xiaojing) largely seized the Liang provinces north of the Yangtze. Emperor Jianwen himself tried to foster a relationship with Hou, to ensure his own safety, and in 550, he married his daughter the Princess Liyang to Hou as Hou's wife. Hou favored the princess greatly, and for the time being, the emperor appeared safe. He created his oldest son Xiao Daqi crown prince. However, Hou still kept the emperor under heavy guard, and only several officials, including his cousin Xiao Zi () the Marquess of Wulin, Wang Ke (), and Yin Buhai were allowed to see him. Meanwhile,