This novel is based on the background of the destruction of civilization caused by nuclear war caused by the depletion of world energy. It focuses on the survival and struggle of the protagonist Zhang San and his team in the end of the world. Through their life in the underground fortress, the thrilling journey of outdoor exploration, and the life-and-death showdown with the reactionaries, they show humanity, emotion and hope, and present readers with a magnificent doomsday survival story.
