Become Old Sa Gaara and Start from the Sandstorm System

Travel back ten years to a world plagued by natural disasters. Lu Chen finally activated his own sandstorm system. Utilizing the old sand in the system and Gaara's sand skills. Beginning to break the inherent thinking of earth superpowers in this world who are only good at defense! Let Lao Sha's sand body become equally invincible when encountering heavy rain! It even made Suna Shukaku, the Fifth Kazekage, a being that was feared in this continent! But will the system really not cheat people? Does the system have a previous host? If so, how did the previous host die? Slowly, Lu Chen discovered that the world seemed not as simple as he thought... He can't just rely on system skills, he needs to find ways to develop more powerful abilities himself...