Netherworld Investigator Chapter 337: Song family’s unique learning, echo positioning

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The piece of paper read: "This is your fourth test. You used to show your excellent reasoning ability in this teaching building, but it was a pity that I was not there at the time. Now I want to make up for this regret. As you can see, this classmate in the classroom has already been killed with several knives. You cannot walk into the classroom or send anything in. You must reason through the doors and windows, how many knives did he hit? Then break to write The glass with the answer, five minutes!"

After seeing the problem clearly, my pupils shrank instantly, which is almost impossible.

Now that time is running out, I can't take care of too much. I took a photo of the piece of paper with my phone and sent it to Huang Xiaotao.

I thought desperately and passed all the methods used in my mind. At this time, Wang Dali and a few classmates rushed over. After seeing the problem, Wang Dali said, "Fuck, this is a woolen thread. Reasoning, it’s just guessing!"

I took a deep breath and said: "This is a closed space. I can use the soul-returning incense to restore the situation of the crime, but firstly, I don't have time to get it. Secondly, this may be cheating."

Wang Dali asked blankly: "What is the fragrance of returning soul?"

I have no time to explain. At this time, the radio buzzed, I turned it on, and Huang Xiaotao said, "Song Yang, I saw the problem. Is the window on the opposite side open? I can let the youngest Use the Skynet system to remotely spy on you!"

I glanced into the classroom and smiled bitterly: "He considered this possibility. All the curtains are closed, and they are made of opaque fabric. It is impossible to see from the reflection of the glass. ."

Speaking of the word ‘reflection’, I glanced at the blood stains on the ground. Although the blood stains have blurred reflections, nothing can be seen from this angle.

Huang Xiaotao scolded: "Asshole, it's so cunning!"

Wang Dali mobilized everyone to go down and call up the science teachers. Everyone wanted to recruit. The boys all ran away, and later invited the teachers up. As a result, the think tanks screamed as soon as they saw the corpse, and they didn't help me except for disturbing me.

A few teachers had a serious discussion. Some said that laser detection could be used, while others said that it could use sonar, but there is no equipment at the moment.

My eyes lit up: "By the way, use your voice!"

I called a boy over and told him and Wang Dali to go to the front and back doors of the classroom, knocking on the doors every second, staggering each other.

Wang Dali is puzzled. There are only two minutes left. How can there be any time to explain? I put my ears on the glass and sounded seriously.

This is actually a flexible application of ossicular sound recognition. Ossicle sound recognition is a three-dimensional image of the internal organs in the brain through echolocation in the abdominal cavity by constantly tapping the ribs.

At the moment, the entire sealed classroom can be regarded as a huge chest cavity, and the corpse can be regarded as an organ inside. With my hearing, it should be possible to reconstruct the whole picture in my mind.

But the classroom is too big, the subtle changes in the sound waves are difficult to accurately capture, and the people around me have been whispering, which affects me very much. I said: "Dear students and teachers, please don't talk, even breathe lightly. A little!"

A teacher who teaches physics said: "Song Yang, you are just fantastic! You are not a bat, you can use echolocation."

I gave a wry smile and folded my palms together: "Please, be quiet for a while!"

The crowd stopped talking, and I pressed my ears to the glass again. At first, there was a blank in my mind, and then gradually a sitting person appeared, his face, figure, and wounds were very clearly presented in my mind.

Time passed by, and my back was soaked with cold sweat as I tried desperately to concentrate.

Later, I gradually calmed down, as if my heart was empty, as if I was walking around in this room, observing everything inside.

The percussion stopped suddenly, Wang Dali reminded in a low voice: "Yoko, there are still twenty seconds!"

I nodded and walked towards the window with the numbers written confidently. When I saw the numbers on it, I was stunned. The deceased got 11 dollars in total, but the biggest number on the glass was only 9, this bastard. Set up a trap again.

Wang Dali said: "There are ten seconds left, hurry up!"

I gritted my teeth, wrapped my fist with my sleeve, and broke the glass with the numbers "2" and "9" written on it.

Time is up!

Deng Chao’s voice came from the loudspeaker outside: "Haha, Song Yang, you are really wrong this time. The deceased was hit by eleven dollars. Unfortunately, you did not pass the test!"

My anger can no longer be restrained, and I yelled at the window: "Despicable man, do you think you are very smart, don't hide if you have the ability!"

Deng Chao ignored me and continued: "Your mistake has killed two innocent students, and the number of ghosts in this teaching building has increased."

A bang, the sound of the explosion made everyone’s eardrums tingle, and then a burst of gunpowder was blown from the corridor head-on, the radio light turned on, I turned on the headset, and Huang Xiaotao said: "I heard an explosion, Are you okay?"

I sighed: "I'm afraid he killed someone again, I'm going to confirm it now!"

Huang Xiaotao breathed a sigh of relief: "It's okay for you to be fine!"

The smoke and dust in the corridor was very heavy, mixed with the smell of burnt flesh. When I came to the end, I found that the bathroom was covered with broken bricks, and the bodies of a man and a woman were buried inside, with the faces of two students. It was burnt to black.

There are traces of binding on the body. The two of them were placed in the bathroom from the beginning. Deng Chao didn't plan to let me pass the fifth test. He just wanted me to watch the people around me die one by one.

I bit my lips with hatred, and then Huang Xiaotao said on the radio: "Song Xingchen has something to tell you!"

Immediately, Song Xingchen's voice came from the headset: "Little Master, I found the hiding place of the hostages..."

I took a few deep breaths to calm my mood, and said: "Don't take any action. He probably put a bomb or camera inside. I will contact Huang Xiaotao first."

Song Xingchen replied: "Be careful!"

I switched back to Huang Xiaotao and asked her: "Has the command center moved?"

Huang Xiaotao said: "It's transferred!"

I ordered: "Tell the youngest member to cooperate with Song Xingchen, and rescue the hostages first. You can think of the specific method, don't be stunned."

Huang Xiaotao replied: "Okay, this matter is left to us!"

At this time, a group of teachers rushed up and shouted: "It's not good, the whereabouts of the principal is unknown, it is likely that he was kidnapped by criminals!"

I was stunned for a while and asked what was going on. They said that the principal had just gone to make it easier. During the period, they were recruited by Wang Dali to become a think tank, but they ignored the principal. When I went back, I saw that the principal was gone and the phone could not be reached. Deng Chao had been kidnapped as a hostage!