In 234 BC, the Qin forces defeated the Zhao armies at Pingyang (平陽; southeast of present-day Ci County, Hebei province). In the following year, the Qin army led by Huan Ji (桓齮) embarked from Shangdang (上黨) and attacked Zhao from its rear, inflicting more than 100,000 casualties on the Zhao army and the Zhao commander Hu Zhe (扈輒) was killed in action. Huan Yi's force crossed Mount Taihang and conquered the Zhao territories of Chili (赤麗) and Yi'an (宜安), both in southeast of present-day Shijiazhuang, Hebei province.