The End of the World: Global Zero-Yuan Shopping Starts

[Doomsday + Rebirth + System + Stocking up + Not the Holy Mother + Decisive Killing] The apocalypse is coming. In his previous life, Lin Xuan was a bitch-hearted and loved his girlfriend. However, he was attacked by his girlfriend and her boyfriend from behind, and was deboned and eaten. In this life, Lin Xuan was reborn before the apocalypse. He vowed to never be a virgin, hoard supplies, kill enemies, and enjoy life! ! ! All the villains in the community are human beings, or are they hiding something else? ! ! The end came so suddenly, what's the story behind it? ! ! Why does a powerful system swallow up upgrades, but become weaker and weaker? ? ? Lin Xuan, why does it exist? ? ?