Wasteland Maintenance Worker: My Shelter Has Unlimited Upgrades

In the third year when the red mist swallowed civilization, Chen Feng picked up a talking metal box in the radiation zone. While everyone was killing each other over a piece of moldy bread, warm yellow lights were already on in his shelter, and the water purifier was gurgling and steaming. "Warning: Approaching source of high concentration of pollution detected." "The host is advised to evacuate immediately." Chen Feng looked at the ten-meter giant made of red mist outside the window and silently pressed the start button of the defense turret. "Who says maintenance workers can't save the world?" He licked his chapped lips, a crazy light flashing in his eyes. "Today, I am going to fix the world."