One Man Wipes Out a Squad. If You're a Combat Engineer, What Am I?

Jiang Chen opens his eyes to find himself transmigrated into the world of special forces as a cannon-fodder combat engineer? His mother urges him to leave the army and find a wife, his comrades laugh that he’s exercise fodder, and even the veterans pour cold water on him: “Engineers don’t get to earn medals!” Then he activates the “Ultimate Arms Hub” System. His minefield drives back the Blue Army commander, his modified bullets take out a superior from beyond their effective range, and he earns a second-class merit for rescuing people in a minefield, only to turn down an offer from the Special Operations Brigade? Has he gone crazy? When he uses fortifications to stop the enemy’s main force, the entire military region finally understands: this isn’t some slacker engineer, but a God of War hiding in the combat engineers!