临洮县
In 248, Jiang Wei led Shu forces from Shiying (石營; northwest of present-day Xihe County, Gansu) to Qiangchuan (彊川; west of present-day Lintan County, Gansu) to rendezvous with the tribal king Zhiwudai (治無戴), who had recently been defeated by the Wei general Guo Huai at Longyi County (龍夷縣; west of present-day Huangyuan County, Qinghai) He left his subordinate Liao Hua behind to guard the fortress at Chengzhong Mountain (成重山; located west of present-day Lintao County, Gansu).