In the chaotic final years of the Sui dynasty, a modern hydraulic engineer transmigrates into the body of a low-ranking clerk at Hanjia Granary in Luoyang.
His superiors demand grain, laborers flee, canals silt up, and rival factions watch like hawks. He has no ambition to conquer the realm or pick a side. He wants only to tend a river, a granary, and a few hundred boatmen, and build a “waterborne paradise” amid the struggles of the warlords.
Grain is more powerful than swords. He doesn't want to claim the realm. He wants the people of the world to know that even in troubled times, they can still live in peace.