Global Wasteland: Shelter Infinite Upgrade

As the apocalypse arrives, all people transmigrate to the wasteland world, facing a life-and-death survival challenge!Terrifying acid rain, a flood that covers the sky, fire that burns cities, global glaciers, super radiation....No one can escape!Humans can only survive by building shelters and enduring rounds of natural disasters.Fortunately, Su Mo awakened the doomsday survival system!His shelter can actually be infinitely upgraded!【Wooden Door】→【Iron Door】→【Alloy Door】→.....【Wooden Spear】→【Tung Wood Spear】→【Electromagnetic Spear】→.....【Diesel Generator】→【Bio Generator】→【Thermoelectric Generator】→.....When everyone is busy preparing for the next disaster, Su Mo is already fully equipped, traversing the wasteland world.“We’re still using oil lamps, and they're already using refrigerators!”“His shelter is said to have walls dozens of meters thick, the safest place in the world.”“In my lifetime, I want to enter Su God's shelter for a day.”