Weird Stories: Contracted SSS Level Fox Demon Town Is Weird

[Single female protagonist + suspense + weirdness + reasoning + Chinese horror] Rules and ghost stories come to Blue Star. Unlucky people will be selected to enter the rules and ghost stories. They can only get out alive if they find a way out or complete the task. Chen Gu has been trapped in a rules monster for three years. Now he can get out. The condition for getting out is that he must contract a SSS level... Fox demon?