Lin Feng suddenly sat up from the hard bed, and his back hit the cold wall hard. The sound of violent breathing echoed in the narrow rental house, and sweat slid down his forehead and dripped on the shiny mobile phone screen. Focused sight. The time displayed on the screen: June 18, 2025, 2:03 pm. There was no stench of rotting corpses in the air, and there was no roar of mutated beasts outside the window. There were only the noisy shouts of the breakfast stall downstairs, and the honking of cars passing by in the distance. "Back." Lin Feng stared at the date on the screen, his pupils contracting violently. A second ago, he was still being torn apart by the tide of corpses, and the pain of separation of flesh and blood still seemed to remain in the nerve endings. The next second, he went back to the 48 hours before the apocalypse broke out. "Ding dong". The phone vibrated and a text message popped up.