Introduction: Surviving The Doomsday With SystemThe river dragon crossed the end of the world of zombies and awakened the synthetic system. Not only could he fuse items, but he could also fuse items. He could even fuse zombies? "Ding... Congratulations to host for successfully synthesizing two Level 1 zombies. You have obtained a Level 2 mutant zombie: Climb Beast! '" "Ding... Congratulations! You have successfully synthesized five Level 10 zombies. You have obtained a King-level zombie: TyrantView Details>