Immortal and Demonic Rules

Tens of thousands of years ago, there was no distinction between the three realms of humans, immortals and demons. The immortals and demons fought endlessly, and all life was in ruins. At that time, the fairy world was dominated by Fuyun Shangxian on Evergreen Mountain, and the demon world was dominated by Hanling Demon Lord in Duansheng Valley. Seventeen is the seventeenth apprentice under Fuyun Shangxian. He is talented and simple in temperament. In order to kill the Demon Lord in one fell swoop, the Immortal Realm thought of a way: to break up the cultivation of Seventeen, plant the soul-recovering technique, and send the Seventeenth to the Valley of Desolation to lure the Demon Lord into the trap of the Immortal Realm. Three years later, the demon king was killed, the demon world was leaderless, and the fairy world was powerful all over the world. Everyone in the world knows that the Taoist immortal has a benevolent heart. In order to destroy the evil demon, he endured the pain and sacrificed his beloved disciple, which is worth singing and crying. Only Seventeen is confused: What is an immortal? What is a demon?