Rules Ferry

300 Years ago, the "wall of rules" shattered, and countless rifts from different dimensions descended on Blue Star. "Fragments of rules" from different worlds (such as "Time Backtracking for 10 Seconds", "Physical Defense Invalid", "Emotional Transformation Combat Power", etc.) Were scattered around the world, causing the original rules of Blue Star to be disordered: gravity in some areas was reversed, time cycles in some cities, and some creatures mutated into "rule aberrations" due to rule fusion. Human civilization was on the verge of extinction, and only seven "rule-anchored cities" survived relying on artificial rule cores.