The Apocalypse Delivery King

Su Han works as a deliveryman until he is suddenly carried into a world overrun by zombies. Once he is there, a mysterious system attaches itself to him, rewarding completed delivery jobs with points that can be traded for power. The source ends mid-sentence, so the rest of the setup stays open, but the central tension is clear: an ordinary courier must survive a collapsed world while racing to fulfil the tasks the system demands.