Notify All Travelers That You Are Under Arrest!

He traveled to a seemingly ordinary world of martial arts and worked as a policeman for four years. Who would have thought that one day after an ordinary arrest operation, they would encounter interstellar bugs, rubber supermen, bomb maniacs and even a pervert with a bad mouth in red tights from time to time. But anyway... "The Zhenling Division is handling the case! Travelers, please listen to me. When you reach my territory, the tiger will lie down for me, and the dragon will be coiled for me. You are trying to make a living in my Great Zhou Dynasty. According to territorial jurisdiction, you must abide by the laws of the Great Zhou Dynasty! Do you understand?" "Huh? You said you came from a world called Earth? Never heard of it. I'm a local. Get out of my way!" "Damn it, why did a mechanical Leviathan come through?! It can't be cut, it can't be cut, it just slipped away." This is the joyful story of Zhang Dong, an earth traveler who pretends to be a native of this world, kills people with one sword and gradually becomes the Dongtian Emperor.