Global Freeze: I Use Mystery Boxes to Build an Apocalypse Fortress

[Apocalypse + rebirth + blind-box System + hoarding supplies without limit + decisive and ruthless + no saintly protagonist + building a faction] The whole world enters an ice age, and temperatures plummet to minus 80 degrees! In his previous life, Lu Ming’s kind heart led him to take in his neighbors and his goddess, only for them to take everything from him and leave him to die miserably. Reborn one month before the apocalypse, Lu Ming awakens the [Doomsday Blind Box System]! [Today's blind box opened: Obtained a subspace storage ring!] [Today's blind box opened: Obtained a miniature nuclear fusion battery!] [Today's blind box opened: Obtained a fully equipped tactical shotgun!] Short on cash? Take out high-interest loans all over the internet. Short on supplies? Empty out Walmart, buy up every livestock farm, and stockpile billions' worth of goods. Need to feel safe? Build a titanium-alloy tortoise shell, bulletproof the whole house, and keep the temperature at a constant 27 degrees! When the apocalypse comes, everyone else freezes like dogs in the snow, fighting over food and even resorting to eating their own children. Lu Ming, meanwhile, wears a T-shirt as he enjoys lamb hot pot and an '82 Lafite in his spring-warm safehouse. Goddess from his past life: “Lu Ming, I’m freezing to death. Please, let me in. I’ll do anything!” Lu Ming: “Sorry, I don’t take out the trash.” Wicked neighbor: “Lu Ming! You have so much food. What’s wrong with sharing a little? What you’re doing is illegal!” Lu Ming: “Oh? Then come in and take some.” (He whips out a Gatling gun.) In this life, I won’t be a saint. I’ll live only for myself! Anyone who messes with me gets killed!