 In summer 548, Yuwen and Yuan Qin the Crown Prince carried out a tour of Western Wei's border provinces, but upon hearing that Emperor Wen was ill, cut their tour short and returned to Chang'an.However, when they did, Emperor Wen had already been healed, and Yuwen thereafter returned to his headquarters at Hua Province.Around the same time, the Eastern Wei general Gao Yue (高岳, Gao Huan's cousin) launched an attack on Yingchuan (潁川, in modern Xuchang, Henan), one of the major cities that Western Wei took from Hou.