Natural Disaster Apocalypse: A System Safe House from the Start

[This story takes place in a parallel world. Please don't compare it to reality.]

(Natural disasters and apocalypse + reborn + stockpiling supplies + revenge + no saintly heroics + cautious protagonist) The Ice Age arrives ahead of schedule, plunging the whole world into a frozen era and killing 90 percent of all living things. In his previous life, Jing Fei trusted people too much and was beaten to death by a pack of starving, treacherous ingrates. Reborn three months before the apocalypse breaks out, he gains the Safehouse System and gets his hands on billions' worth of supplies for free!

What? You want to steal my supplies? Break into my safehouse first!

What? You're about to starve to death? Sorry, Jing Fei says he throws away half of everything he eats!

(The synopsis doesn't do it justice. Please read the story.)