Doomsday catastrophe: Stock up on tens of billions of supplies at the beginning

Mu Yun has gone through thirty years of the end of the world, lingering on his last breath and still can't escape the fate of death. When he woke up, he found that he was reborn three months before the end of the world. Not only that, he brought back a space ring from the previous life. So, he exhausted his wealth and went shopping crazily, and started his legend with inexhaustible supplies. The regrets of the previous life will be made up in this life, and the enemies of the previous life will...