Entered the Underworld at the Beginning and Became a Civil Servant in the Underworld

After a person passes away, his three souls and seven souls return to the underworld. However, they enter reincarnation by the bridge. Those who are greedy for the human world will eventually turn into evil ghosts. And I, Guo Xiaoer, took over the heavy burden from my predecessors and became a nine-to-five ghost job from now on. If evil spirits harm people, I will kill them. If they don't want to be reincarnated, I will kill them! For the ghost coins I keep trying...