"Don't get distracted, buddy", Hong Yi touched his elbow, suggesting that the Chinese teacher's eyes swept over.

"I hate it when the teacher uses a marker pen to write a board book on the blackboard, like cleaning glass", Hong Yi complained to Ye Xin intentionally or unintentionally.

Wipe the glass?

There's something wrong with the blackboard!

Could it be that the way to survive in a claustrophobic classroom is the "blackboard"?

I see! He remembered the scene when students in the 21st century were in class, and the head teacher "unintentionally" passed by the corridor outside the window to patrol the class! The claustrophobic classroom has no windows, and the classroom can only be changed to patrol!

The name "claustrophobic classroom" has such a deep interpretation!

The door is blindfolding, and the real way to survive is the "blackboard"!

The exit is hidden behind the blackboard, right?!

The hint of the squad leader's girlfriend Xiao Jing is the most important - the three love letters all mention "myopia". That's not myopia at all, it's a hint of life.

Combined with Hong Yi's words, Ye Xin finally launched a way out - the secret is on the body of the blackboard, to be exact, it is not a blackboard, but a piece of glass, one-way perspective glass.

Why there are so many light bulbs installed in the ceiling, now I finally understand. Because claustrophobic classrooms need enough bright light to facilitate one-way see-through glass surveillance.

Xiao Jing sat in the third row, only three meters away from the blackboard, although her eyesight was only 4.8, but it was not enough to see the board book on the teacher's blackboard. But if the blackboard was glass, according to the mirror principle, the distance between the board book and her was a full six meters. Six meters is enough for a normal person with a vision of 4.8 to sometimes fail to see an ant-sized board.

Thinking about it carefully, the hint of the way out is actually obvious: the three love letters are sandwiched between the three texts of the Chinese textbook "Discovering the Secret of Science" and "Question Xilinbi", and the physics textbook "The Spread of Light", and the two texts and an ancient poem all hint that there is something wrong with the blackboard.

From the very beginning, the direction of his inference was deviated, according to the content of "Task Prompt: The claustrophobic classroom of thirty-five people always has a pair of eyes watching you", Ye Xin has always been confined to the claustrophobic classroom of thirty-five students, and what is even more outrageous is that he also misinterpreted "attention" as clues related to love and secret love. And the class teacher and teacher may also pay attention to you, and "you" can refer to any of our students, not specifically him.

All clues, all pointing to the blackboard.

The rest, is validation.

The question is, who knows what the reaction will be if you rush over to wipe the blackboard in the middle of class? Claustrophobic classrooms: These NPCs are at risk of tearing themselves to shreds at any time. But if you don't verify it, you will only have a dead end; If you go to verify, there may be a glimmer of life.

There is a way.

There are many ways to verify mirrors. The electronic pen on Ye Novice's hand happens to have the function of infrared light, and now the electronic pen is very advanced, not only can write on paper, but also use it to control the electronic screen from a distance.

Ye Xin turned his heart sideways, pressed the button, and the electronic pen in his hand quickly shot out a thin infrared light and hit the "blackboard".

The eyes of the whole class were instantly focused on him, puzzled, jealous, and hateful...... All kinds of emotions appeared on everyone's faces, and the xenophobic genes of NPCs began to play tricks, and the friendly classmates gradually became hideous, and the classmates who did not have a good relationship with the class president had their mouths split into the size of school bags, and roared like gravel in the city on a rainy day pouring down the sewer......

At the last moment, the expected happened, and a reflection bounced off the "blackboard" at a ninety-degree angle.

Blackboard!

Sure enough, there was a problem!

The NPC that jumped into the air and turned into a demon is gone, and he is now the only one left in the huge classroom, and everyone else is gone.

"It's like coming back from a winter swim."

Ye Xin smiled slightly, although he was in a dream, it felt too real, and his back was soft.

To fall in a dream is to die in a real way. He hadn't forgotten this phrase from the Dream Oath System. Even if it was a few seconds later, he would be gone.

Ye Xin stepped forward and carefully figured out the blackboard behind the lectern - compared with the blackboard of the 21st century, the biggest change is that teachers no longer use chalk, which is harmful to the body, to write on the board, but instead use the most advanced board book laser pointer in 2400 to write. It is about four meters long and about one meter wide, and the blackboard is very flat, without a single concave or convex place, and he pushes it hard, but it does not move at all.

Embedded on the left is a device with a horizontal screen in the middle of the instrument, which plays the date and the name of the students cleaning the classroom every day. Beyond that, there was the blind-covering door of the claustrophobic classroom.

On the right stands a medium-sized smart bookshelf machine, although the bookshelf, but there is not a single ready-made collection of books in it. But it's such a machine, as long as you want to read any book in the world, it can copy it to you within five minutes.

The horizontal screen instrument and the smart bookshelf machine have all been checked, and there is nothing suspicious.

Where exactly is the smart switch on the blackboard?

At the end of the day, he took it for granted, thinking that he would find a way out if he thought of a way out.

Life and the organs of martial arts novels are fundamentally different things.

Unconsciously took a step back, and with a bang he bumped into the teacher's super-artificial intelligence lectern, the lectern is located in the middle of the lectern, and a smart screen similar to a computer is installed on the lectern, and on the right side of the screen are arranged from top to bottom are three buttons of the same shape and size, except for different colors, the first two are blue, and the third is red.

Strange, there are already virtual buttons in the smart screen for the teacher to control this artificial intelligence lectern, why install these three buttons in one fell swoop?

It's like a Xiaomi smartphone has three more protruding buttons.

Could it be that the secret is inside?

More than 90% probable!

After some careful investigation, there were no other distinct switch control buttons around the blackboard, only the three buttons on the lectern were redundant.

The three buttons first exclude the red ones, and the remaining two blue ones, how to choose?

What happens if I choose the wrong one?

Why exclude red in the first place?

Isn't there often a plot of "cutting the bomb red and blue line" in police and bandit TV dramas? Common sense tells us that red is generally extremely dangerous, and many occasions in life also mean forbidden.

So how to choose the remaining two blue buttons?

Both of them are blue round buttons, the size, shape, and color are exactly the same, and the score is exactly the same, which is really difficult......

Forget it, the old way - use "Finger Soldiers" to decide! Tap the blue button for the thief!

"Point at the soldiers, point at who to be the soldiers, point at the thieves, point at the thieves and point at the people to be the big thieves......"

"You're the big thief!"

Ye Xin's fingers stopped on the head of the first blue button, took a deep breath, whether he lived or died depends on this time......

Wait!

Something is wrong.

He remembered the task prompt, "thirty-five people" and "a pair of eyes" are both singular numbers, although the eyes are double, but the singular number "one" is used. There is a reason for the one red, two blue buttons, and the task implies that he should make the "singular" choice.

That's right, it must be like this.

The red button is the correct option.

So, what will be witnessed next - will it be a miracle, or will it be hell?

Ye Xin's index finger of his right hand pressed on the red button......