One bag of cement levels a bumpy road; a three-foot-thick reinforced embankment withstands raging tides. Su Mu, a modern-day construction foreman, transmigrates into the Song Dynasty as a seventh-rank county magistrate in Yang County. The moment he opens his eyes, creditors are already blocking his door, and the county office is behind on its employees' wages. Using cement production, road construction, business investment, and coal and iron smelting to turn his fortunes around, he goes from being mocked as the "mud official" to becoming the court's urgently summoned "crisis firefighter." From river management and embankment construction to seawalls and city defenses, he repeatedly overcomes seemingly impossible challenges. Ultimately, he earns recognition through the sheer strength of his infrastructure projects, and his career continues to soar.