 In 604, Emperor Wen died—a death that traditional historians generally believed to be a murder ordered by Yang Guang but admitted a lack of direct evidence—and was succeeded by Yang Guang (as Emperor Yang).Xiao Yu, whose sister Crown Princess Xiao became empress, was made a military recruiting officer.When, at one point, Xiao Yu became suddenly ill, he ordered that no medical treatment be carried out, believing that this would be a good time for him to be relieved from governmental service.