Traveling through the Tang Dynasty coincides with the aftermath of the troubled times. He has no system and no magical powers. He only relies on modern craftsmanship and knowledge to forge powerful continuous crossbows, forge fine steel blades, and build heavy weapons for destroying cities for Li Shimin. From an unknown craftsman to the leader in the military construction of the Tang Dynasty, he helped the King of Qin rule the world and open up a prosperous age with his hundred-refined magic weapon, control the world with his craftsmanship, and protect the rivers and mountains of the Tang Dynasty!
