He doesn't know martial arts, he doesn't know how to be strategist, he doesn't know how to recite a poem. He only knows how to control water. Armed with a steel tape measure and a hydrographic account, he fell into the forty-fifth year of the countdown to the Song Dynasty's fall - using embankments, farming and water transportation to forcibly change the course of the "Song Dynasty fell in Mongolia" river. But he finally discovered: History can change its path, but it cannot change its sea. His name cannot be found in the history books eight hundred years later.
