Doomsday Refuge, I Have the Power to Strengthen It Infinitely

Global catastrophe, the national trial system is coming! Everyone can bind a property under their name. Whether it is a first-class Tomson mansion or a rural homestead, it can be converted into a doomsday shelter of the same area! ..... Chen Chen looked at the 200 square kilometers of uninhabited island under his name and fell into deep thought. Was it that just a second ago, his ex-girlfriend dumped him because he couldn't afford a large flat in Shanghai's Magic City? But at this moment, something clicked in his mind. The version of Pinxixi Shelter has been opened! Limited time flash sale product: 1000 units of D-grade high-strength alloy priced at 12298.28! C-level Turret Storm Gatling sells for 22998.24! A-class small controllable nuclear fusion reactor sells for 16735.98! ... Today's big turntable: Invite 30 people to cut a knife to receive SS-level equipment, the MK-6 Thor Hammer-powered mecha! ! ... Passerby: "What the hell? My shelter is only one floor, but this guy's shelter has more than 4,000 floors?" Passerby: "No! Don't we all use kitchen knives, clubs and cold weapons? How come you are driving a mecha?" Passerby goddess: "Damn it! From the third floor to the 300th floor are all supplies?? Can the elder brother give some to the younger sister? The younger sister can accompany her..." ... Seeing other people living in shelters like rough houses, cautiously eating moldy bread, and frighteningly resisting the attacks of beasts, Chen Chen's lips became harder than AK's. "Well, I know you are in a hurry, but don't be anxious yet. Can you help me fight Xixi with a knife?" ...