 He led the Zhao army away from the protection of Lian Po's defensive structures, and sought to actively engage Qin in pitched battles.At the same time, King Zhaoxiang of Qin secretly appointed the feared Bai Qi as the new general of the Qin army, and conscripted every Qin man over 15 years of age as auxiliaries.Bai Qi then used feigned defeats to lure the overconfident Zhao Kuo into an ambush, trapping over 400,000 Zhao soldiers in a valley.