A Loser's Zombie Labor Empire

Zhang Yang arrived in a world after the apocalypse. His family, a wealthy one, tested him, found no ability, and put him out. He then woke a system that assigns labour to zombies. Other survivors were fighting over food. Zhang Yang put S-class zombies into rice fields to plant, into pens to raise animals, and into workshops. The output grew into factories, the largest operation standing in the ruins. His family, who had thrown him out, were pulling mouldy bread out of the rubble. Outside groups moved on what he had built. He hit back at both, and the scale of it drew attention across the wasteland, where people began to speak of him as the one rebuilding.