Pei Yanzhi majored in mechanical automation. Right after graduating, he transmigrates into the body of a marquis's heir, whose family has been stripped of its title and sent into exile. From the start, it's hell mode: branded a criminal, sweating away in a quarry, his back covered in whip marks. His family is full of elderly, weak, sick, and disabled people who are starving, while everyone covets his mute beauty of a wife. Luckily, a [Junk System] arrives late but at least arrives. The trouble is, its store is completely empty, so he has to sell things himself to earn points? Pei Yanzhi rolls up his sleeves. Fine, this suits an engineer perfectly! Starting with a tiny pulley system, he builds tools, develops irrigation, improves farm equipment, and smelts high-grade steel… He only wanted to make sure his family had enough to eat, but somehow he becomes the uncrowned king of this impoverished northern frontier. See how a modern engineer uses cutting-edge technology to get off to a strong start in this chaotic ancient world, then builds his way to dominance!
