A Winter Break Job at an Agricultural Machinery Factory, and You Build an Aerospace Carrier?

After transmigrating to a parallel world, Ji Cheng became a college student. Aside from studying hard, he usually spent his summer breaks working at his family's agricultural machinery business. One day, while he was in class, a group of heavily armed special police officers suddenly stormed into the classroom. “Ji Cheng, right? Come with us!” At the detention center, the police stared gravely at the documents in their hands. “While your classmates were enjoying their summer break, what were you doing?” Ji Cheng answered honestly, “Working part-time to save up for tuition, and running a little side business.” “A little side business? Selling weapons to the Bear Country counts as a little side business?” “No, sir, I sell agricultural vehicles!” “Agricultural vehicles that race across battlefields?” “It's a misunderstanding! This has to be a misunderstanding!” “And welding machine guns onto agricultural vehicles is a misunderstanding?” “I didn't teach them how to weld the machine guns on. They figured that out themselves!” The police: “...” An expert: “One last question. If our country placed a bulk order, could you deliver?” Ji Cheng: “Don't worry, there's plenty! I've got Desert Conqueror off-road vehicles, high-precision electromagnetic cannons, unmanned aerial reconnaissance drones...” Ji Cheng answered every question honestly and dutifully, only to realize that everyone in the room seemed completely stunned.