 Emperor Wu put Yuwen Xian in charge of the operation against Northern Qi's capital Yecheng (鄴城, in modern Handan, Hebei), although by the time Yuwen Xian arrived at Yecheng, the Northern Qi emperor Gao Wei had already abandoned Yecheng and fled.Subsequently, Northern Zhou forces were able to capture Gao Wei.Yuwen Xian's army was said to be so disciplined that the people of Northern Qi were barely disturbed by them.