 In summer 550, Gao Cheng's brother Gao Yang, who had controlled the Eastern Wei government after Gao Cheng's death in 549, forced Eastern Wei's Emperor Xiaojing to yield the throne to him, ending Eastern Wei and starting Northern Qi (as its Emperor Wenxuan).In response, Yuwen launched a major attack on the newly established Northern Qi, reaching Jian Province (建州, roughly modern Jincheng, Shanxi).However, Gao Yang himself led a strong army to defend against Yuwen's attack, and Yuwen, upon hearing that Gao Yang's army was well-run, made the comment, "Alas, Gao Huan is not dead."