I Was Accidentally Beaten to Death by My Apprentices and Gained the System

As the leader of the strongest sect in the Divine Continent, Su Tian was killed by his apprentice during a tribulation. Because of his anger, he obtained the most powerful revenge system. After practicing in a different space for a thousand years, he was reborn and came back just to avenge the killing of his apprentice. Unexpectedly, he unexpectedly became the strongest person in the world.