Working in the Underworld: from Handyman to Boss of Yan Jun

I died suddenly after staying up late. When I opened my eyes, I was dragged into the underworld. I wanted to drink Meng Po Soup and be reincarnated, but I was forcibly bound by the [Underworld Worker System] - I had to work to atone for my sins before my life span was over. If I failed, I would immediately lose my soul! Others worked as underworld servants and ghost generals, but I started from the lowest level as a handyman, sweeping away resentful souls, clearing garbage, and guarding the Naihe Bridge. I was bullied by old ghosts, ridiculed by ghosts, and plotted by ghost generals. But no one knows that in my part-time job system, the more I work, the stronger I get, and the more I fight, the harder it gets! Cleanse the resentful souls and explode the Yin God's cultivation; Discover bugs in the underworld and be rewarded with artifacts called Yin soldiers; Suppress the Li Gui riot and be directly promoted to power; cross the border and return to the world of the world, and kill my enemies with ease! From a handyman to a patrolman, from a sinister general to a ghost commander, I slapped villains in the face, rectified the underworld, subdued the men of fierce ghosts, befriended Po Meng and Niutou, and even the judge wanted to give me face. It wasn't until one day that I was shocked to realize: I was not an ordinary dead soul at all, but the reincarnation of the ancient Yin Lord! Chaos in the underworld? I'm coming to town! Is the underworld unfair? I'll change it! Invasion of the Three Realms? I'll carry it! Become a worker from the bottom and work your way up to the Supreme Lord of Hell in the underworld, who rules Yin and Yang and controls reincarnation! Work to earn a living? I will directly make the underworld my world!