 He therefore requested Northern Qi to return Xiao Zhuang the Prince of Yongjia to be emperor.In spring 558, Northern Qi troops escorted Xiao Zhuang to Wang's territory, and Wang declared Xiao Zhuang emperor, as a Northern Qi vassal, with his capital at Jiangxia (江夏, in modern Wuhan, Hubei).By this point, Emperor Wenxuan's military campaigns and other wasteful behavior had caused the imperial treasury to be drained.