I Reshape the World by Delivering Express Delivery

Lu Yuan is an ordinary courier. Until he received a package with the sender information all "?" [Causal Express System Activation] [Your life changes when your package arrives. The first package he sent gave a woman who had been betrayed for fifteen years a new life. The second one allowed the high school student who was about to jump off the building to see the light. The third, the tenth, the hundredth... Every change of life has a price - cause and effect come back, ranging from bad luck to fatal consequences. But he couldn't stop. Because of the disappearance of his father, the fate of the entire city, and the recipient of the next package... All waiting for one thing. A courier.