I'm Already Level 9999, and the System Has Only Just Arrived

Su Yang transmigrated to another world where games had invaded reality. It was full of dangers: terrifying ruins where survival was a long shot, unknown primeval wilderness, and indescribable places that drove people mad. The interwoven torrents of planes dragged countless players into their flow, where a single thought could mean life or death. To become a top-tier powerhouse, people resorted to every means imaginable: scheming, assassination, betrayal, and more! After twenty years of hardship, Su Yang finally reached the pinnacle of the world and became its strongest person. Suddenly, a System appeared and said it could help him start his path to a comeback from Level 1! “Because the Host is weak, he has been badly humiliated. Defeat Zhang Dong (Level 2), who humiliated you!” Su Yang looked at his four attributes, all at 9999, then at the first quest the System had issued. “Your System's running pretty late, isn't it!”