Hehe, I'm guessing you're looking for the suspense novel "Rebirth: The Purgatory"! The story was about a good person named Ji Xingyan, who had been around for ten generations. She passed away in a traffic accident, but the negligence of the underworld led to her death. The King of Hell offered to make up for her mistake and let her be reborn. In the end, she was reborn into a world where humans and ghosts lived together. At the same time, she also got a portable hell. I hope you like this fairy's recommendation. Muah ~😗