The Red Envelope Death Game with Weird Rules

Slightly scary, extremely brain-burning, infinite flow, no system, single heroine, if you are timid, don't watch the end. Everyone was pulled into a chat group, and a red envelope of 10,000 yuan was suddenly sent to the group. At the same time, a strange voice suddenly came from the broadcast, announcing 10 strange rules. Students and teachers encountered unexplainable weird phenomena. The school beauty committed suicide by jumping off the building. The surveillance recorded that she seemed to be doing something before jumping off the building. After a ritual, a headless female body was discovered in the basement of the school. Jiang Nan and I found a book that was forbidden to be borrowed in the school library. We found that the strange stories here seemed to be related to the experiments many years ago. Just when I thought I was going to solve all the mysteries, the dean suddenly appeared from behind me and knocked me unconscious...