Global Catastrophe: the System Arrives Early

Twenty-first century. A red fog descended on the world. At first, no one paid attention, thinking it was a simple fog. Until.... Humanity mutates. Not only humans, but all creatures on the earth have undergone mutations. The entire world became a hunting ground for monsters, and human civilization collapsed in an instant. Su Chen, who had been a dust citizen for a year in the apocalypse, entered a level nine disaster area due to a misjudgment by the upper management of the base city on the 'mining day' and was devoured by a monarch-level catastrophic variant on the spot. Unexpectedly, he got a blessing in disguise and traveled through time before the disaster struck. Not only that... "Ding dong!" "Congratulations to the host for crossing the swarm of catastrophic corpses. He survived the catastrophe and will be blessed later. He will be rewarded with 35 doomsday survival points." The corpse group refers to a group of students in physical education class. "Ding dong!" "Congratulations to the host for escaping from the mouth of the third-level cataclysmic hell-splitting demon dog and surviving the disaster. 50 Seconds of doomsday survival points will be awarded." Hellsplit Dog: The dog in the security room. Listening to this series of prompts, Su Chen was stunned...