Before the End of the World, I Stocked up Tens of Billions of Supplies

Three days before the rebirth of the apocalypse, the first thing Chen Mo did was not to call the police, but to max out all his credit cards. While others were still struggling for a bottle of water, he sat on the roof of the warehouse and drank Coke: "Want supplies? Give me crystal cores in exchange." The world has collapsed, but his wallet has not - because he has a doomsday prophet system