It's All the Fault of the Underworld

I'm working on infrastructure in the underworld [System + upgrade flow + suspense] After I was hit by a basketball and fell into the lake, Black and White Wuchang brought me some unfortunate news. I was supposed to have seventy years left to live, but I was beaten to death by a basketball! But in order to make up for my unfinished lifespan, I became a staff member of the underworld and got a ghost headhunting system! It turns out that this underworld is also under construction. As long as I help the underworld introduce ghost talents, I can obtain various abilities, including spiritual talismans, magic weapons, and martial arts inheritance... From then on, I became a living dead wandering between the underworld and the human world. During the day, he was king and hegemon in the human world, and at night, he worked as a cow and a horse in the underworld! In addition to dealing with strange events in the human world, he also has to receive special customers from the underworld. After upgrading to fight monsters and pick up girls, I started a counterattack in life!