Reborn: The Last Bunker

A global cataclysm plunges the world into extreme cold of minus 100 degrees. The protagonist is reborn on the eve of disaster, heading to Changbai Mountain. He builds an underground safe house, hoarding food, fuel, and equipping it with energy and defense systems. His shelter is warm and well-stocked. He takes in friends and family, surviving safely in the frozen apocalypse.