Meitu: "Don't talk to me, I'm very busy."

She didn't even look at the two of them, and spoke while controlling the remote control in her hand.

"What kind of remote control is that?" Xiaofeng said.

"DOGEN." said the beautiful rabbit.

"With all due respect, it should be an intelligent machine." Bai Yin said.

"If it were an intelligent machine, it would have transformation sound effects."

"Wait a minute, so what is this remote control?" Lin Xiao said.

"Ahaha, I finally noticed it."

The beautiful rabbit laughed loudly and pointed to the ceiling.

"Haha, did you see it? It was made by the talented and beautiful inventor Miu Rabbit."

"It's really amazing. It will turn into a flash of light and a tall figure like a god."

Xiaofeng: "That said, it's still difficult to understand."

Lin Xiao said: "But when did you make such a thing?"

"After completing the camera you commissioned, because I had nothing to do, I modified it into a remote-controlled toy."

"Of course it's okay to install a camera and take pictures. When it comes to investigation, you can't miss out on the floor plan.

So I want to make a correct floor plan based on this photo." Meitu said.

"Haha, how can you let me run around and search?"

Use photos to create a correct floor plan.

"That's really powerful. It will definitely come in handy during searches." Lin Xiao said.

"The only problem is that I'm not used to controlling it yet, so it takes a lot of time to take pictures," said Meitu.

"You can't say this with confidence. If we don't hurry up, the search time will be over." Xiao Feng said.

"It's so noisy and there's nothing we can do about it," said the beautiful rabbit.

"You're the one making the noise." Xiaofeng said.

Bai Yin: "Uh."

Lin Xiao said: "Classmate Xiaofeng, do you remember when we came to the library?"

"Of course I remember." Xiao Feng said, "We can just see the automatic bookcase, right."

"But what happened? Why did the bookcase move on its own?"

"Actually, this bookcase is designed like this." Lin Xiao said.

With that said, Lin Xiao moved the secret door.

"You see, as long as I take my hands off the movable bookcase, after a while, the bookcase will close.

"The bookcase closed itself."

"This bookcase, like an automatic door, will automatically close after a period of time. If you think about it carefully, this is reasonable."

Lin Xiao said.

"Because if you can't close it yourself, you can't return the bookcase to its original position after entering the secret door."

"In this way, if you need to return the sword bookcase to its original position after entering the secret door, you can just let it close automatically." Xiao Feng said.

"Ah, could it be that the reason why the bookcase returned to its original position at that time was because the mastermind escaped into the secret door?"

"After solving Tianhai, he escaped into the secret door. Well, it is indeed possible." Lin Xiao said, "Let's confirm it immediately."

"How to confirm?" Xiaofeng said.

"It's just dust on the card reader. Did you forget that I set it up in advance just in case?" Lin Xiao said.

Lin Xiao opened the bookcase as he spoke, then went in to check the pneumatic card reader.

"Well, the dust is still there." Xiaofeng said.

"The card reader doesn't seem to be in use. In this case, it's impossible for the mastermind to escape," Lin Xiao said.

"Maybe the person behind the scenes used the card reader to swipe the card and then put the dust back into its original place?" Xiaofeng said.

"No, the dust is exactly the same as when I came here. I remember the shape and shape very clearly, so it can't be wrong."

"So, I can be sure that the person behind the scenes did not enter this door."

"In that case, the person who moved the bookcase was staying in the library at that time? Tianhai himself." Xiao Feng said.

"I can't be sure until I see the photos from the camera," Lin Xiao said.

"Maybe there are others hiding."

"However, my mind has not changed. I still believe that the man behind the scenes is the murderer, so I must find relevant clues."

"This game should be over." Xiao Feng said.

"Of course the body needs to be investigated, right?"

"Yes, in order to find clues about the murderer, we must investigate." Lin Xiao said.

"But if you feel uncomfortable, you don't have to force yourself."

"It won't be a problem, let me investigate." Xiao Feng made up his mind and walked over.

The last time classmate Tianhai saw him, he was obviously fine.

"Why is the body here?"

"What does this place mean?"

"If Tianhai is the one who moved the bookcase, did he come here on purpose after moving the bookcase to make the secret door appear?" Lin Xiao said.

"There is a distance between here and the secret door. There should be no reason for him to want so many at this location, but there are no traces of moving bodies around, which makes me find it difficult to understand.

"Ah, are you okay? Your face is so pale."

"There is no way to suddenly investigate this after all, and this person has been with us just now."

"No, I have no problem, because you have to work hard." Xiaofeng said.

"We must try our best to prevent Tianhai's death from being in vain, and we must deal with the mastermind who forced us to do such a thing."

"Well, I will also assist you as much as possible. I will help you with your search. After all, I am a detective."

"It's not temporary."

"Yes." Lin Xiao said.

"A lead ball was found. This should be a deadly weapon."

"It was originally placed in the warehouse on the first floor. I can't remember it wrong." Xiao Feng said.

"That's it. Apart from that, I didn't see anything else that looked like a murder weapon." Lin Xiao said.

"But to use a fatally heavy shot put as a murder weapon would require a considerable amount of arm strength."

"Although we say we need to investigate, how do we start?" Xiao Feng said.

"Leave it to me." Lin Xiao said and began to observe. The scar on the back of his head was very deep and should be the fatal part.

"So can Monokuma's files be trusted?" Xiao Feng said.

"Well, it's okay for now." Lin Xiao said.

Then he put his hand into Tianhai's pocket.

"Huh? What are you doing?"

"Confirm what he has on him because you don't know if there are any clues to send the letter. Since you want to investigate, you must do it thoroughly. After all, I have already said that I will assist Xiaofeng."

"What, you said such cool words accidentally." Xiao Feng said.

It hurts the person's heart rate a little bit.

"Tianhai only has the key to his personal room and a black and white tablet of the student handbook."

"The black and white tablet is also his own, and it is exactly the same as our student handbook." Lin Xiao said.

“No key card or anything?”

"I was also thinking about the possibility, but found nothing, so Tianhai is really not the mastermind behind the scenes," Lin Xiao said.

"Assuming that it is impossible for him to come without the key card, in this case, the possibility that he is not the mastermind behind the scenes is relatively high."

So why is Tianhai classmate here? He is obviously not the mastermind behind this, so why would he come to a place like this?

"Xiao Feng, are you okay? The situation has been investigated. Let's leave here first," Lin Xiao said.

"Well, I'm sorry." Xiaofeng said, "I made you worry."

"Having said that, I still can't understand why Tianhai Gastrin came to the library. He is unlikely to be the mastermind behind the scenes, but he still comes to a place like this."
To be continued...