When the natural disaster comes, the whole nation travels through the wasteland world and faces the challenge of death and survival! Terrifying acid rain, floods, sky fires burning the city, global glaciers, super radiation... No one can be spared! If humans want to survive, they can only build refuges and receive rounds of natural disaster baptism. Fortunately, Su Mo awakens the doomsday survival system! His refuge can be upgraded infinitely! [Wooden door] [Iron door] [Alloy door]... [Wooden spear] [Electromagnetic spear].... [Diesel generator] [Biogenerator] [Temperature difference generator]..... When everyone is running around preparing for the next disaster, Su Mo is already full of equipment and circulating in the wasteland world. We are still lighting oil lamps, and people are using refrigerators! His refuge is heard that the walls are