He Xuan is silent, cold, cruel, revengeful, very smart, keeps his feelings and emotions in check, ruthless, revengeful, cold-blooded, prefers loneliness. He Xuan keeps a low profile. He Xuan is pale, has a long black hair, yellow eyes. He Xuan has an undercover job. He Xuan pretends to be the prince's close guard in order to gain his trust, but in reality, He Xuan is an assassin hired by the Black Water Kingdom to kill the prince.