(Cleaning rules):

1. Please keep the floor clean, empty the trash can, wipe the blackboard clean, arrange the tables and chairs neatly, but do not pick up the red paper balls, they will be discovered by "them," and do not believe the words on them.

2. Please lock the door when cleaning, block them, they do not have keys, and the teacher will not come to check early, repeat, the teacher will not come to check early.

3. When you hear knocking on the door, please keep quiet, repeat, the teacher will not come to check early.

4. Before being checked, you are not allowed to leave the classroom, you can leave the classroom for 10 minutes when emptying the trash, if you see a person's head, do not believe her words.

5. Do not believe the sudden appearance of chalk words on the blackboard, especially white, they are deceiving you.

6. Believe the words on the red paper balls and follow the instructions on them.

7. The checking teacher is male, wearing a blue school uniform, wearing a blue school uniform, please trust him.

8. This is a girls' school, repeat, this is a girls' school.

9. Do not attempt to leave the teaching building, return to the dormitory before 11:30 PM, lie in bed and sleep.

10. Do not let them discover that you do not belong to them.

...

"Ding!"

After returning to the classroom, there was another message.

As I looked at the new message, I felt a chill down my spine.

Although I don't usually watch horror movies, I have some understanding of these strange rules.

These rules in the message are obviously contradictory.

Indicating, unable to confirm their authenticity.

And, my phone has no signal at all, how did I receive the text message?

I don't know why I encountered such a thing.

But that classmate who called me had disappeared the moment I returned to the classroom.

At this moment, the entire campus fell silent.

But at this time, just after evening self-study, the campus is usually very noisy, with groups of students going home, some going to the convenience store to buy sausages, instant noodles, and drinks, and some going to the teacher's office to ask questions.

In short, it would not be so quiet, quiet enough for me to hear the beating of my own heart.

Feeling a bit scared, I closed the door, instinctively looking out the window.

Outside, the fog was thick, like a solid barrier, with occasional small ripples, as if something was swimming inside.

I hesitated but still went to close the window.

Even though the rules didn't mention it.

As I closed the window, some mist touched my right thumb, and in that instant, my whole palm seemed to freeze.

I incredulously covered my right hand.

Cold sweat trickled down from my forehead, back, coming out one by one.

Suddenly, I turned around abruptly.

Because just a moment ago, I felt countless eyes staring at me in unison, as if they were real.

I can't describe this sensation of real, chilling feeling.

But my eyes told me, there was no one else in the class.

It must be an illusion.

It must be an illusion.

I tried to deceive myself like this, even trying to convince myself that it was a dream.

But the eerie campus, the fog that instantaneously froze my palm, and the phone that received a text message without signal...

All of this is telling me that I am in a strange place.

I couldn't help but tremble, my head was aching, and I even hoped that this was all a prank by the entire school targeting me.

I wanted to run out and shout for help regardless of everything.

But reason told me that something even more terrifying would happen that way.

After hesitating in place, I decided to first lock the front and back doors.

Who would have known that as soon as I walked to the door, I discovered that the opposite classroom was full of people.

The slender teacher was with her back facing me, holding a teaching whip, explaining the topic on the blackboard.

At that moment, I felt like a person walking alone in the dark night, seeing the light.

Excitement overcame fear, and I smiled, ready to step out of the classroom, but suddenly remembered that rule: [Not allowed to leave the classroom before being checked.]

I couldn't help but shudder, my steps freezing in mid-air.

The sound of the teacher explaining the topic also stopped.

My heart was pounding like a drum.

At that moment, the teacher turned around, looked at me, and gently asked, "Is everything okay, student?"

At that moment, all the blood in my body seemed to freeze, my teeth couldn't help but tremble, and my eyes widened.

She had no face either!