李牧
The Qin state bribed Guo Kai (), a Zhao minister, to sow discord between King Qian of Zhao () and Li Mu. The king doubted Li Mu's loyalty and ordered Li Mu to hand over his command of the Zhao army to his deputies, Zhao Cong () and Yan Ju (). When Li Mu defied the order, the king became more suspicious of him and ordered his men to take Li Mu by surprise and arrest him. Li Mu was executed in prison later on King Qian's order. In 228 BC, after learning that Li Mu had been replaced, the Qin forces attacked, defeated the Zhao army and conquered Dongyang (; located east of the Taihang Mountains). Zhao Cong was killed in action while Yan Ju escaped after his defeat. Seven months later, Qin forces occupied Handan and captured King Qian, bringing an end to Zhao's existence.