Frozen Doomsday: I Stockpiled Ten Billion Supplies

Thirty days before the frozen apocalypse descends, Lin Chen is reborn and activates a hundredfold stocking system. He hoards rice, canned goods, and fuel, transforming his home into a blast-proof, temperature-controlled fortress. Formerly mocking relatives and neighbors, when disaster strikes, they come knocking with moral blackmail and violent break-ins. Having witnessed the cruelty of humanity in the apocalypse, he hardens his heart, sealing himself off with his supplies, refusing to share a single crumb. While the outside world freezes into a hellish wasteland, he enjoys a peaceful haven in the frozen ruins. — Description from novelcodex.org