Click-

There was a loud bang behind the podium, and Ye Xin looked back to see that a miracle had happened - the blackboard opened a crack from the middle to both sides, getting bigger and bigger, and finally opened a door for people to enter and exit from the floor of the podium to the top of the blackboard.

The door of the claustrophobic classroom is indeed a blinding method, and the real exit is behind the blackboard!

Ye Xin walked in with joy, and just when he thought the task was over, surprise crawled up his face.

This......

It's like a way out, it's clearly a narrower space, like a container house with no windows and no doors, and the size is only ten square meters. It was half and half the answer he imagined. The wrong half is that there is no way out; That's right, such a small space is indeed a good place for teachers and class teachers to supervise claustrophobic classrooms.

One meter behind the blackboard, there are a one-meter-five, two one-meter desks and three chairs, Ye Xin sat down at the desk in the middle, leaned back on the chair, and the whole picture of the claustrophobic classroom was clear at a glance. That's where the task prompt really comes in.

There was a small black button on the desk, and he thought it was another switch, but when he pressed it, a twenty-nine-inch virtual screen popped up, a four-dimensional smart computer for teachers' offices. The label inside is similar to that of a 21st century computer, except that it is a four-dimensional image, with a swipe of the hand, an option to jump to the palm of the hand, the ability to move at any time within a certain range, and the touch of temperature.

There is a rectangular box in the upper right corner of the screen, he clicked on it, which shows the recent spring travel plan, "underwater world, forest park, animal paradise" three options are spread out vertically, next to the emphasis on March, the second weekend of April These two options are highlighted, with a sentence at the bottom - "When you have the same dream repeatedly, if it is unavoidable, it is better to go with it." ”

"The teacher's personality is too negative, isn't it?"

Ye Xin couldn't agree with this sentence, it seemed to have a kind of demonic nature, hinting at something, and it seemed like nothing.

Never mind.

I'll see if there are any other clues.

The extra space, although it is not an exit, is firmly convinced that the clue to the way of life must be in it.

With a backhand toss, throwing the box of the spring outing plan back on the screen, Ye Xin began to look for other objects on the table. On both sides of the table are neatly placed textbooks, test papers, homework, pen holders, all kinds of teacher supplies, and electronic calendars.

Ye Xin walked back and forth between the three tables, carefully searching every object on the table and every inch of the table, and strangely, forty-five minutes had passed, and he still couldn't find any clues.

Seeing that time was running out, he began to get a little irritable.

Exit, where the hell is it.

Where is the clue?

He flipped through every book, every piece of information, every document on the screen, every inch of his desk, but he still couldn't find a clue.

The problem, what's the problem?

He looked at the desk of the claustrophobic classroom fishbone diagram, and felt an urge to turn the claustrophobic classroom upside down.

Calm down, calm down, the more critical the moment, the more calm you be.

If there are no clues here, there is no way that there will be clues in the claustrophobic classroom.

The problem, what's the problem?

Suddenly, he looked up and swept over the wall behind him, where a large frame hung a group photo of the whole class, everyone in the picture was smiling and shining.

"The streamer is easy to throw people away, red cherries, green plantains", this scene reminded him of his happy times when he was in junior high school. In the 21st century, he just graduated from university, and when he first arrived in society, he tasted all the flavors of life, and it took a lot of hard work to find a 9-to-10 job in a first-tier metropolis, and he forgot how long he didn't overflow his smile.

Still, reading is the happiest time. He reluctantly left the frame, his eyes moistened unconsciously.

Slowly.

The walls are as clean as white paper, so why is there a group photo here?

Ye Xinjian walked to the photo frame, and he thought of a possibility, if there is no suspicious place in this surveillance field, then this group photo frame is the biggest suspicion.

The clue must be hidden in the body of the photo frame, right?!

He trembled, his right hand trembled and stretched out to the photo frame, the photo frame uses super-intelligent synthesis technology, the voice and smile of each person in the photo are lifelike, and it seems that laughter can be heard in front of the photo, which was thought to be a ghost before, but now it is the 2400s, most of the objects have four-dimensional technology, and there are even a handful of fields to achieve a five-dimensional space experience.

The photo is normal, but there are very small scratches on the wall around the frame, and you can't notice it if you don't get close.

This means that the frame can be moved!

Following the route of the scratch move, Ye Xin pushed the photo frame to the right forty-five degrees, and when it got stuck, he tried to break it to the left, turned it ninety degrees, and with a soft click, the photo frame was able to be taken down.

A small hole in the cuboid is revealed behind the frame, the depth of an adult's palm, and a small cylinder protrudes in the middle of the hole, and there is a slit in the middle of the cylinder, "Keyhole!" Ye Xin exclaimed.

He quickly took out the "electronic pen" handed over to him by the deputy squad leader Xue Keke, inserted it forward, the size was just right, twisted it hard to the left, and a huge sound of opening the door came in from outside, and finally found a way out! Ye Xin was overjoyed and ran out, dumbfounded all of a sudden.

A door opened, and a door!

Only then did I understand why I found the exit, but there was no sound to complete the task!

"Isn't this a cheat!"

Empty rejoicing, Ye Xin couldn't help but scold the eighteenth generation of the ancestors of the system, and now there are only five minutes left in the time. It took fifty-five minutes to open the first door, and there is still one door, what the hell?!

To no avail, he strode to the door, paused, took a deep, deep breath, and exhaled slowly, the height, width, and color of the second door exactly the same as the first. There are two different places, the first is the way to unlock, the first is unlocked with a "key", and the second is a combination lock; In the second place, parallel to his gaze, there was a time monitor above the middle of the coded door.

Four minutes and forty seconds.

The time remaining on this mission.

There was no time to think about anything else, squatting down, he began to seriously examine the combination lock, a total of twelve buttons and a horizontal screen display, similar to the arrangement of a calculator, twelve buttons in a row of three, four rows of distribution. The first three rows are one to nine, and the fourth row is three buttons: asterisk, zero and pound.

In addition to this information, the twenty-six letters of the alphabet are relatively evenly spaced below the ten numbers from zero to nine.

1. Mark a letter Y; 2. Mark the three letters of ABC; 3. Mark the three letters DEF.

4. Mark the three letters of GHI; 5. Mark the three letters of JKL; 6. Mark the three letters of MNO.

7. Mark one letter PQR; 8. Mark the three letters of SCU; 9. Mark the three letters VWX.

0, mark Z with a letter.

He tried to press the four numbers of "one, two, three, four" casually, and the password must be a combination of four numbers, and an alarm suddenly went up: the password was entered incorrectly, if the error reached three times in a row, the claustrophobic cabin technology door would be automatically locked and could not be restarted!