I Brought Weapons to the Ming Dynasty. If You’ve Got a Problem, Come at Me

Firepower is justice, and everything within range is the truth. From the start, you want to steal my wife? You really deserve to die. A scholar too weak to hurt a fly nearly starves to death in a year of famine. The protagonist transmigrates with a System, and there's no way anyone's going to bully me. While everyone else starves, I feast. I don't care if you're a thug, a bandit, a rich tyrant, or a powerful overlord. If you have a problem with me, come and see whether your knife is faster or my gun is. With a powerful, upgradeable weapons System, you have three thousand soldiers? I have a light machine gun. You have thirty thousand? I have a Gatling gun. What, you've gone into hiding? Then let's see if I can pick you off from two thousand meters away. As long as I hold the truth in my hands, everything I say is true.