C659 The Nonexistent Mount Kongling

Lee Yifann's eyes were fixed on a certain line of text, "Five hundred years ago, after the catastrophe in World of Martial Dao subsided, the Nine Revolutions Indestructible Devil Arts was sealed? But no one knew where it was? The location of the Nine Revolutions Indestructible Devil Arts should be recorded on the map. The Black Tortoise should be some kind of special sealing Barrier