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.) Xiao Gang did not dare to weep for Emperor Wu's death, and Hou made him emperor to succeed Emperor Wu (as Emperor Jianwen).