In the early spring of 2026, the end came without warning. The sky turned dark red, the signal disappeared, order collapsed, and the world fell into madness overnight. Library administrator Wu Han, with his innate "tortoise temperament" - slow, steady, and accepting death, the supplies he stocked up before the disaster became life-saving straw. The "Doomsday Safe House System" accidentally activated gave him a shelter of his own. Can tidying up make you stronger? Can capacity be expanded in an orderly manner? This "old turtle" in the eyes of others uses his best method to build a fortress of survival step by step in the apocalypse. Rescue the orphan girl Lin Xiaoyu, outwit the looters, explore the ruins to find supplies... There is no golden finger to go on a killing spree, only a steady and steady turtle survival philosophy. The end is scary, but the old turtle has a shell. Guard the safe house, protect the people around you, step by step, and you can always survive.
