Having conquered the State of Wei, the general Han Xin was ordered by Liu Bang, the King of Han (漢王), to attack the lands of Zhao and Dai (代), with the assistance of Zhang Er (張耳), the Prince of Changshan (常山王, essentially the former Prince of Zhao). Han Xin quickly annihilated the forces commanded by the Dai prime minister Xia Yue (夏說) and marched across the Taihang Mountains into Zhao.