"In other words, what you saw and heard before was probably just your personal hallucination?"

“…Huh…I…I don’t know…No, not…”

"Mr. Li, I still say that, just that, we cannot conclude that this is a supernatural event, and it is more likely that something is wrong with your personal physical or mental state."

“…”

"Mr. Li, are you okay?"

"I don't know...I...I'm going crazy?"

“This requires a hospital to make the diagnosis.”

“…”

"Do your family know this?"

"No……"

"You can communicate with your family and go to the hospital for a detailed examination with their company. Or you can change the environment and ask for a while for a leave of absence. If the problems you are facing now cannot be avoided, you can consider changing jobs and leaving campus. I know this is a very important life decision and will affect your life, but your current situation looks really bad. If this continues, it will only get worse. This is just my personal opinion..."

"No, isn't it a traitor?"

"This possibility is not completely ruled out. So, we will go to the school where you work, and you will also go to the hospital for a check-up. Is this OK?"

"I think...I think I really saw...that kid, that boy..."

"So, did you notice any obvious characteristics of him at that time?"

"Features... so tall, more than one meter or two, neither fat nor thin, wearing a sweatshirt and sweatpants, not the same set, sports mountain is a black zipper shirt, sweatpants... blue, blue sweatpants, do you know? There is a white edge here."

"Well. These are not critical clues."

“…”

"What else can you remember?"

"It's all."

"So, what do you think of my suggestion just now?"

"Well...isn't it really a ghost?"

"It's not certain yet, but we think the possibility is very low."

"oh……"

"You expect it to be a ghost?"

"No, no! Of course not! I didn't expect to see a ghost, but... but I'm crazy... I think my brain is not broken, I'm normal, I just encounter such a thing..."

"Mr. Li, we are not saying you are crazy. You may have a physical condition, fatigue, illness... or you may have hallucinations because of mental stress."

"What pressure can I have as an art teacher? Alas..."

"Anyway, let's do a check first."

"Um……"

March 12, 2002, analyzing audio files. Audio files 01020020311g.wav.

"...It was five o'clock that day, and all the students in the school were gone, and I was about to leave, I heard the sound..."

Click!

"There is no sound on this person."

"It's true that he has a problem himself."

"At least it means he wasn't entangled by ghosts."

"Let's see the situation again."

On March 13, 2002, I went to Bihai Primary School where the client worked. Audio file 01020020313.wav.

"Sorry, please let them in, they are looking for me."

"Teacher Li, is this your relative?"

"Well. They are from the normal school and want to come and have a look."

"Oh, are you going to recruit an art teacher? Teacher Xu is going to take maternity leave?"

"Haha, they just came to see where they went after graduation."

...

"Here. Now in class, you guys are speaking softer."

"Well, OK. Which classrooms are you seeing?"

"The two rooms in front of the second floor, just two rooms in the other side."

"Um."

"What, how?"

"You mentioned the library before?"

"Yes, go up here on the fifth floor."

"Where is the stairs that boy walked on?"

"Ah? No, it's the stairs over there."

"Then let's go over there and take a look."

...

Da, da, da...

...

"It's this. My office is here. You can see the classroom opposite when you come out. The boy ran here, blocking this wall, and I didn't see it..."

Da, da, da...

"You...you think he might be able to pass through the window here..."

"It just needs to be ruled out all possibilities. As of now, there are no ghosts here."

"ah……"

"Let's have a look at the library."

"Oh, OK."

...

Da, da, da...

...

"The library is right in front of it, and the door should be locked now. However, the library teacher may be..."

Knock.

"The door is locked, he probably isn't in the library."

"Northwest corner, is that there?"

"There are also libraries over there, and there are all rows here."

"What book is placed in that corner?"

"This...I really don't know this..."

"Teacher Li?"

"Ah, Teacher Zhang."

"You are..."

"This is my relatives and his classmates, all from the normal school. They are about to graduate, so they come to the school to take a look..."

"Hmm? Didn't the school arrange an internship?"

"I've arranged it, it's just a high school. They want to see the elementary school. I just happened to be a primary school teacher..."

"Oh. Elementary school is different."

"Hello, Teacher Zhang. I heard you are the teacher of the library here?"

"Well, don't be polite, come in and have a look."

Crazy...

"That's so thankful."

Dang...

“Are these keys from the library?”

"Some are offices and there are a lot of library keys."
To be continued...