Start with a Gun Lead

When Shen Jin was performing a sniper mission, Accidentally entered the ruins game world, There are no rules, no order, not even a safe zone. There are only all kinds of strange beasts and endless desolation. While others were still working hard to kill monsters with stone knives, Chen Jin had already raised his gun and aimed it at the head of the alien beast. Am I being unreasonable? The gun in my hand is the truth.