Ji Huaiyou, the young master of the Ji Group, wakes up and time-travels to become a poor county magistrate on the verge of death in the fictional Wei Dynasty. With no golden finger, he only has a merchant's brain and a pair of hands that can work. He treats governing the county like a management game, solving the Wang family case, building fire kangs, improving fertilizers, brewing grape wine, running an orphanage, and stubbornly turning a poor county into a prosperous model. Emperor Yongan recognizes talent with discerning eyes, promoting him all the way from a rank-seven county magistrate to the Weichang Prefecture Vice Prefect, a key official in the capital, and the Regional Commander of Lingnan. He makes paper, builds cement roads, presides over the imperial examinations, manufactures firearms and cannons, and pushes the equal-field system—every single method thought up by himself, sealing him as a marquis of Yongning all the way.