I was doing well in the calculus class when I suddenly received a text message.

【1. Do not answer any questions from the teacher.】

【2. If the teacher delays the class, please ignore it. Do not linger in the classroom after class.】

【3. Do not skip classes, keep quiet in the classroom.】

【4. The library is absolutely safe, you can only stay for a maximum of two hours. You must keep quiet in the library, otherwise you will be punished by the administrator.】

【5. The dormitory is absolutely safe, but only from eight o'clock at night until eight o'clock the next morning.】

【6. The study room is safe, you can only stay for a maximum of one hour. Students can communicate with each other, but the students in the study room may not be normal.】

【7. If the people inside do not open the door voluntarily, no one can enter the dormitory from the outside.】

【8. After eleven o'clock at night, do not open the door for bed checkers.】

【9. Do not turn off the lights before going to sleep, the lights will turn off by themselves.】

【10. If you see someone wearing a red hat in the dormitory corridor, immediately seek help from the dormitory manager and do not look back during this time.】

【11. In the dormitory, seek help from the dormitory manager if you have any problems; outside the dormitory, seek help from the counselor.】

【12. Do not go to the principal's office.】

【13. Do not eat meat buns from the cafeteria.】

【14. Stay away from cats on campus, never feed them, because you cannot choose what to feed them.】

【15. There are no dogs in the school, stay away from people who have dogs.】

【16. Beware of the student union, there are no people in the student union.】

【17. Do not leave the dormitory after midnight, wait for dawn before leaving.】

【18. In the eliminated dormitory, do not eat anything inside or talk to anyone inside.】

【19. Do not talk to people in the school restroom stalls.】

【20. Before going to bed, make sure your roommates are normal. If you notice anything unusual, say "The dog is outside" and lock the person out.】

【21. Try to ensure the safety of your roommates, it's not easy to survive alone.】

【22. Do not eat too much, do not be greedy.】

【23. Do not trust others easily.】

【24. Persist for seven days, after seven days, the school will be unsealed, take bus route seventeen and leave this place.】

【25. Do not leave the school before it is unsealed!!!】

After reading the text message, I looked around.

The students in the classroom looked at each other, presumably they all received the same message.

Just as I was about to speak to my roommate, Tao Ran.

【Keep quiet in the classroom.】

I closed my mouth, opened WeChat, and sent a message to the dormitory group.

Me: Did you guys receive the message?

Tao Ran: Yeah, prank, I don't believe it.

Zhou Yiqiang: It's unlikely that the whole class is pranking, brother, you don't believe it? Then stand up and shout, see if you'll die.

Tao Ran: Get lost.

Sun Huawen: Although it seems unscientific, there are many things in this world that cannot be explained by science. Let's not act rashly.

Then Xiao Ze sent a dog head emoji.

Huang Pang: I agree.

No one in the classroom made a sound.

Then, a burst of laughter erupted.

"Hahaha."

The laughter came from the front, and as I looked up, I saw the guy watching Douyin so intently that he probably didn't even see the message.

The laughter seemed particularly abrupt in the classroom.

The teacher stopped teaching, mechanically laughed a few times, "Hehe."

The curvature of the teacher's smile was terrifying.

No one dared to make a sound in the classroom.