Traveling Through the Apocalypse, I Have an Absolute Domain!

[System + time travel + invincibility + superpowers + zombies + alien beasts + decisive killing + no female protagonist] Blue Star, the apocalypse has come for a while, and a pawn shop quietly opened in a commercial street full of zombies; —System, are you serious about opening a pawn shop in the apocalypse? —[I'm optimistic about you! —System, where's the promised gift package for newbies? —[Are those two holes on the nose for breathing out? ? —I... Okay, okay! That's how you play it, right? —Invincible? ! If you say that, I won't be sleepy! While others are still fighting for a bite of food, the protagonist is looking at the shelves full of food in the pawn shop and worrying about what to eat. While others were still fighting monsters to improve their abilities, the protagonist sat in the pawn shop and said something like Versailles: "As a pawnshop owner, it makes sense to be invincible!" I'm just a boss, I just want to earn a little pawn value in these last days; If you come to the pawn shop to pawn, I will welcome you; If you come to the pawn shop to rob, then I will applaud and welcome you. These people are all walking pawns! What? Are you a ninth-level superpower? Sorry, do you see the kneeling person over there? They are all tenth-level superpowers; What? Are you a strong Martial King? Sorry, I accidentally killed two Martial Lords just now; No matter what your strength is or what force you belong to! Even if the gods come to rob, they will leave their lives behind! I said it!