A World Transformed: What Do You Do When You Start at Max Level?

[System-based + Invincible Protagonist + Leveling + A Little Wild Imagination] Lin Yemu accidentally transmigrates to an instance world outside the main world. Here, he shatters everyone's expectations: people can gain all kinds of superpowers or craft all sorts of divine weapons. While others have to fight hard after entering an instance, Lin Yemu activates a System on his very first day inside, and this System can even unlock all kinds of cheats. Lin Yemu can't believe how amazing this is! System: Master, the instance world is complicated. I've activated every cheat skill for you. Take your pick! Lin Yebing: Holy crap!! This is incredible! ...Though, I want a bit more of a challenge. Can I do this without cheats? System: No. How am I supposed to meet my performance targets if you don't use cheats? Lin Yebing (helplessly): You asked for it!