The documentary production team spent four years in shooting the South-to-North Water Diversion Project. It has recorded important construction periods of the world’s largest water conservancy project. Immigration stories, national treasure protection and ecological management all happened during this course of water transfer construction... It discussed how these key water engineering projects worldwide have significantly promoted the development of human civilization, and the important role they have played in human life in various fields. What’s more important is this documentary focuses on the future and delves into the exploration of the intimate relationship between human development and water resources.