The protagonist is given a "military industrial blueprint system". By touching and dismantling any weapon, he can instantly understand its structure and principles in his mind, and directly extract the "optimized blueprint" that can be achieved under the current level of technology. He is neither a time traveler nor an arms master, but a passionate man who has fought hard in actual combat and understands what is needed on the battlefield. Starting from a jammed gun barrel, he will use the most crude method to knock out the most ruthless guy.
