 Yuwen and his general Daxi Wu (達奚武) thus attacked Hanzhong.Xiao Xun instead turned to another brother of Xiao Yi, Xiao Ji the Prince of Wuling for aid, and Xiao Ji sent reinforcements commanded by the general Yang Qianyun (楊乾運).Yuwen and Daxi put Nanzheng under siege, and due to the length of the siege, Yuwen and Daxi became angry and ordered that the city be slaughtered when it falls, but at the intercession of Xiao Xun's chief of staff Liu Fan (劉璠), whom Western Wei forces captured during the siege and whose talent Yuwen respected, Yuwen rescinded the order.