Netherworld Puzzle

There is a global paranormal resurgence, and ghosts have changed from urban legends to urban daily life. Funeral parlor intern Lu Pan thought he was just an unlucky ordinary person, until the corpse in the morgue that shouldn't exist smiled at him. Three rules, a bronze mirror, and a boss who died in a convenience store while still keeping accounts. He was told: Ghosts cannot be killed, they can only be sealed; the seal will fail sooner or later; and the bronze mirror in your hand, the vertical pupil eye inside, is more dangerous than the ghosts outside. The "Night Watch" organization found him. The retired ghost man in the old town said he was gifted, the former criminal investigation professor Gu Heng said there was something wrong with him, and the mysterious neighbor Granny Zhou burned paper on the balcony on time every night but never explained to whom. All clues point to the same number: seventeen. The seventeenth floor of the underworld, the Judge's Hall. Lu Pan slowly discovered that the shape of the vertical pupil eye staring at him in the bronze mirror looked more and more like his own. And a man named Cui has been looking for him for five hundred years.