The Battle of Wan Castle (宛城の戦い, rōmaji: Enjō no Tatakai) was a battle between the forces of Cao Cao and Zhang Xiu in 197 AD. Zhang Xiu led a revolt, ambushing Cao Cao in Wan Castle and burning it. Though Cao Cao escaped, casualties were heavy, including Cao Cao's bodyguard, Dian Wei.