The Deep Freeze Apocalypse: Everyone's Shelter Is So Different

Story Setting: A sudden extreme-cold disaster engulfs the world. The climate had been normal, but it began with a steady drizzle. The rain continued for half a month, and at first nobody paid it much attention. Then, overnight, fierce winds and torrential rain brought a sharp drop in temperature. It plunged to dozens of degrees below zero, and blizzards raged. The infrastructure collapsed in less than two days, social order crumbled, and humanity was plunged into a fight for survival.