He Makes Weapons for a Living. Why Pick a Fight with Him?

[Transmigration, System, Passion, Conquest, Technological Great Power, Farming, Invincibility, Apocalypse] Alternate history

After transmigrating to western Sichuan in the Republic of China era of a parallel world, Lin Hao only wants to quietly invent a few things and make some money. But the Rising Sun Chamber of Commerce and the Yang warlord insist on forcing him to hand over his mine, cutting off his livelihood! They have no idea what kind of person they've provoked! The [Cornerstone of Civilization] System activates. Making penicillin by hand is just an appetizer; the Blackstone Type One rifle, Maxim machine gun, and trench mortar are the main course! When his 75 mm mountain gun roars, his enemies finally realize in horror that the easy target they thought they could squeeze is actually an iron fortress! Regiment Commander Yang weeps: "I only wanted a mine. Did you really have to build a cannon factory and bombard me?" The Mishima Chamber of Commerce trembles: "We only wanted to steal the technology. We never meant to start a war with an arms-industry giant!" Lin Hao: "I only wanted to protect myself. You were the ones who forced me to steamroll everyone."