Machine Overlord in the City

Li Feichen was lucky enough to obtain the Machine Overlord System, possessing a golden nail sword that can emit mysterious energy, which can strengthen materials, refine fuel, and improve the machine's performance, efficiency, lifespan, hardness, and tenacity thousands of times. From then on, his copycat mobile phone can be waterproof, fireproof and anti-drop, and his tattered pickup truck can be used as... After completing the tasks released by the system, Li Feichen will have the opportunity to receive super science fiction machines such as spider cars, flying cars, intestinal micro-doctors, robotic beasts, multi-functional drones, and all-around humanoid mechas. Book club group: 608336648