He knows no martial arts, no statecraft, and cannot recite a single poem. All he knows is flood control. Armed with a steel measuring tape and a hydrology ledger, he falls into the forty-fifth year of the countdown to the Great Song’s fall. With levees, farmland, and water transport, he forcibly changes the course of the great river called “the Song fell to the Mongols.” But in the end, he discovers that history’s course can be changed, but the sea cannot. Eight hundred years later, the history books contain no trace of his name.
