At this time, Principal Li's wife shouted, "It's time to eat. With that, Principal Li's wife walked out of the kitchen.

Charlie Ba looked at Principal Li's wife and said, "Sister-in-law." It's all said. Don't be busy, Rainforest and I will go back to rest now. ”

Principal Li's wife said, "You and Rainforest are leaving?" ”

Charlie said: "We're not leaving. It's a shift change. Advance tonight and this Sun Tielong will stay here to protect you. ”

Principal Li's wife said slowly, "What is there to protect." This Lao Li is just scared, but there is no need for this. ”

I smiled slightly and said to Principal Li, "Principal Li is our client. Protecting President Lee is also part of our work. ”

Principal Li's wife said, "That's really hard work for you. But ah. Since you're here, let's eat together. ”

Charlie Ba said: "Sister-in-law, I said it all, don't be so troublesome. ”

Principal Li's wife hurriedly said, "Since they are all here." I won't stop you if you want to go back.,Eat the food before leaving.。。 ”

Originally, Charlie Ba was reluctant to eat here, but seeing that Principal Li's wife was so enthusiastic, he was really embarrassed to refuse.

I secretly said in my heart: This Principal Li's wife is indeed different from Principal Li. looks open-minded, and is definitely not the kind of woman who is good at playing tricks. But this scheming can't be seen. However, Principal Li's wife and Principal Li are definitely not the same person. I feel in my heart, such and such a husband will find such a wife.

After we sat down, Principal Li's wife shouted at her son, who was playing, "Huzi." Go call your dad and call him to dinner. ”

The little child, as soon as he heard his wife's instructions, nodded and shouted at Principal Li's wife, "Got it. . . ”

With that, he ran to his room.

We also heard the sound of children calling for their dad in the restaurant.

"Daddy. . . Father.. Mom told you to eat... ”

After a while, the little kid ran back.

The child shouted at Principal Li's wife, "Mom, Dad said he wouldn't eat. ”

Seeing that the child was so cute, I touched the child's hair and said, "How old is it? ”

The little boy looked at me and said, "Eight years old. ”

"Good. . . That's good. ”

Principal Li's wife said slowly: "Huzi. Your dad doesn't eat, you eat. ”

Charlie Ba looked at Principal Li's wife and said, "Principal Li doesn't eat. Why don't you go and get him up and eat together? Good people are iron rice and steel, and they don't eat hungry for a meal. ”

Principal Li's wife looked at Charlie Ba and said, "Hey... Leave him alone. I'll leave some for him. Hungry at night. Just give him a hot one. ”

Since Principal Li's wife said so, it's hard for outsiders like us to say anything.

A few of us sat together and looked at the table full of good food. I felt it instantly. People live all their lives just to eat for a bite to eat. But some people don't want to be so simple, they want to buy a house and a car, and then eat delicacies from the mountains and seas, and wear silk and satin, in fact, think about it carefully, as long as their parents are healthy. Living with your loved ones and being able to eat with your best friends is actually the happiest person. As for how big a house to live in or how good a car to drive, it is not a question at all. The question is whether you can earn money with peace of mind, and whether you are a person and do things.

On the contrary, there are some people who just want to make more money, and they get some money by cheating, and when they wait for the cycle of heavenly reason, they are frightened, why is this so painful. Why bother.

After I was full of wine and food, it was almost seven o'clock. By this time it was completely dark.

Charlie Ba looked at me and Sun Tielong and said, "Forward!" I'll leave it to you here.。。 ”

Sun Tielong nodded slightly, indicating that he understood.

And I said, "Got it. Hurry up. Go back and get some rest. ”

Charlie Ba smiled: "Got it. . . ”

With that, Charlie and Rainforest left Principal Li's house.

Sun Tielong and I originally planned to help Principal Li's wife clean up together. But Principal Li's wife never let him. I was very anxious at this time, looking at the appearance of Principal Li's wife, I also knew about the kitchen, and it was estimated that Principal Li's wife would not let us mix. So I dialed Ruohan's mobile phone.

"Hey. If it's cold. ”

Ruohan said: "Hmm... What's going on? ”

"It's okay. Ask what you're doing. ”

Ruohan said: "I didn't do anything." I'll wait until you get back. I knew you were busy, so I didn't call you. ”

"Oh. . . I will stay at Principal Li's house in the evening. Charlie Ba and Rainforest go back. You have a good night's rest. ”

Ruohan said: "Oh. . . I was going to wait for you to eat together.。。 ”

"Oh. . . We finished eating at Principal Li's house. Charlie and Rainforest don't expect to be hungry at night. Eat some of your own, and go upstairs to rest. I don't think I will have time to go back during the day. ”

Ruohan said slowly: "Oh... All right.. I won't bother you. ”

"Hmm... Have a good rest. ”

Ruohan said: "Got it. . . ”

After I hung up the phone, I went to the kitchen and continued to look at the information recorded by Sun Tielong. And Sun Tielong was not in the hall at this time, and followed me to the study.

I looked carefully at what Sun Tielong had recorded. I didn't see anything suspicious, and I didn't find any suspicious people.

I don't know why, it hurts amazingly.

I rubbed my temples. Sun Tielong looked at me like this, and said slowly: "Forward. . . Isn't it exhausting? ”

"No, I don't. What's so tiring about this. ”

Sun Tielong said: "I said that your brain is tired. . . ”

"Huh. . . It's also tired. ”

Sun Tielong said: "I heard it." When your brain hurts, it's better to listen to some concerts. ”

"Really?"

Sun Tielong said: "Now there is everything on the Internet, and you can find whatever you want. I also know it from watching the news. ”

I looked at Sun Tielong and smiled, "I know you're a news lover." ”

Sun Tielong said: "What kind of news lover am I? It's just the time to play.。。 ”

I laughed and said, "You watch the news for a few hours a day, and after reading the news, you watch the entertainment news, and then the sports news." Tencent News you watch every day. This is also a walk is a news lover. ”

Sun Tielong said: "Isn't this boring? ”

I smiled and didn't speak.

It just so happens that there is a music player on the desktop of the computer, and there is also a headphone next to the laptop. In order not to affect the life of Principal Li's family, more importantly, if I am listening to music, let Principal Li know. Thought I was an unreliable person. I plugged my headphones into the plug of my laptop. I put my headphones on. Then I looked for a song to listen to.

I said, "Light music is better for me. ”

When I clicked on the song, within seconds, I was screaming.

"Ahh

Although the voice was not very loud, Sun Tielong in the study saw my shouting and hurriedly ran to my side.

Sun Tielong said to me, "You? What's wrong.. ”

I said slowly, "No... I just didn't expect it to be so loud. It shook my ears and hurt me. Brain pain. ”

Sun Tielong said: "When you listen to the song with headphones, why don't you take a good look at the sound." You know? Listen to songs often with headphones, which will make an impression on your ears after a long time. ”

"Really?"

Sun Tielong said: "Of course, this is. . . ”

"No, it's not. Maybe I have some brain pain, plus it's too loud. It shook me all at once. ”

Sun Tielong said: "I usually see you listen carefully. I don't even know about this little thing. ”

"Huh..."

I smiled, and then I was going to turn the sound up and plug the headphones into my ears. But for some reason, something seemed to come to my mind for a moment.

I said slowly, "I seem to have thought of something. ”

Sun Tielong said: "What did you think of when you went forward. ”

"I don't know, just a little thing flashed through my mind."

Sun Tielong said: "What is it? . . ”

I immediately lit a cigarette and thought quietly.

Sun Tielong didn't bother me when he looked at me like this. Just standing beside me, quietly waiting.

About ten minutes passed, and I smoked three cigarettes. Suddenly, I said, "Voices kill... ”

Sun Tielong didn't seem to understand. Then he said to me, "Go ahead. . . What did you say? ”

I repeated, "Voices kill. ”

Sun Tielong still didn't understand, so he looked at me quietly.

And I was right away typing something on the computer. Sun Tielong just stood behind me and watched.

I saw a message like this on a post bar.

"Infrasound, when the frequency of the sound wave is about the same as the frequency of the heart, it will cause heart resonance, and if it is serious, it will hang up, and there is the loudness of the sound, for example, when a person suddenly appears in an environment of 120 decibels, he will have hearing loss and ear bleeding, if the intensity is higher, the dead person is no problem!"

This is commented on the Internet, and as for whether it is accurate or not, it is only in further serious matters.

Sun Tielong looked at me and said, "I don't understand moving forward." ”

I said slowly: "The first male student died from the engine battery, and no one knows how the second female student died. Charlie Ba just said that the female student seemed to be listening to the song, and then suddenly she fell to the ground. ”

Sun Tielong said: "What does this have to do with sound. Isn't it normal to listen to songs on your phone? ”

"Look it up on Baidu."

Sun Tielong and I looked up a lot of information on this on Baidu. See three words, infrasound.

I didn't know what it was before, but I looked it up on the Internet and learned a lot.

"Sound waves with a frequency of less than 20 hertz are called infrasound. Infrasound waves are not easily attenuated and are not easily absorbed by water and air. Infrasound waves, on the other hand, tend to have a very long wavelength, so they can diffract around some large obstacles. Some infrasound waves can circle the Earth for two to three cycles. Infrasonic waves of certain frequencies are easy to resonate with human organs because they are similar or even the same as the vibration frequency of human organs, which is very harmful to the human body and can cause death when dangerous. Infrasound waves are characterized by a wide source, long propagation, and the ability to travel far around obstacles. Infrasound has a very low frequency of sound waves, below 20 hertz, but the wavelength is very long and travels a long distance. It travels farther than normal sound, light, and radio waves. For example, infrasound waves with a frequency of less than one hertz can travel thousands to tens of thousands of kilometers away. Infrasound is extremely penetrating, penetrating not only the atmosphere, seawater, and soil, but also through sturdy reinforced concrete buildings, even tanks, warships, submarines, and airplanes. Infrasound waves travel at the same speed as audible sound waves due to the low frequency of infrasound waves. The atmosphere absorbs very little of it, and when the infrasound wave travels thousands of kilometers, its absorption is less than a few ten-thousandths, so it travels a long distance, and can travel thousands of meters to hundreds of thousands of kilometers away. Infrasound waves can interfere with the normal function of the human nervous system and endanger human health. Infrasound waves of a certain intensity can make people dizzy, nauseous, vomiting, loss of balance and even mental depression. Some people believe that motion sickness and seasickness are caused by the infrasound waves associated with the operation of the car and boat. People who live in buildings with more than 10 floors often feel dizzy and nauseous when encountering windy weather, which is also because the wind makes the high-rise buildings shake and produce infrasound waves. Stronger infrasound waves can also cause deafness, coma, insanity, and even death. ”

I said slowly, "Did Tielong see it?" ”

Sun Tielong said: "It seems that the voice can really kill." ”

"The sound that the human body can withstand is 120 decibels, to be precise, the sound that the human ear can withstand is 120 decibels. If you can hear more than 120 decibels, then it will cause deafness, coma, mental disorder, and definitely death. ”

Sun Tielong said: "But... Listening to songs on your mobile phone, you can't reach 120 decibels. ”

"I think so too, but I think about it carefully, it's not impossible for voice to kill, and sound killing can kill people quietly, when everyone can't feel it...

Sun Tielong said: "You are right. But I think it's too unbelievable. ”

"Actually, some of the murders seem to be unbelievable, and there are some strange cases. It's nothing more than knowing more than ordinary people, and using some killing methods that everyone doesn't understand to kill. But when it comes to cracking, everyone will find it incredible. ”

Sun Tielong said: "Yes. . I don't understand these things. ”

I smiled slightly, didn't speak, and looked at the computer carefully.

Sun Tielong said: "Then how to confirm it. ”

I turned my head to look at Sun Tielong and said, "Actually, it's easy to confirm." There are a few things to know, though. ”

Sun Tielong said: "What do you know? ”

I didn't speak, I took my phone and dialed Charlieba's phone.

Before I could speak, Charlie asked, "Hey. Advance? What's the matter? Call me at night. ”

"I want to ask you about that female student. You're telling me more about it. ”

Charlie Ba said angrily: "We were practicing that day, and a female student was next to us, listening to the song with headphones!" And then it fell for no reason. ”

"The headphones she brings. What does it look like? ”

Charlie said, "I want to think about it. I want to be a big white earphone.。。 It's similar to DJ.,It looks like that girl often listens to songs.。。 ”

"Oh. . . That's it.。。 Okay, are there any others? ”

Charlie Ba said, "Didn't I tell you everything? Not long after he fell to the ground, there was blood around his eyes and ears. Although there was not much blood, it was clearly visible that it was coming from the eyes and ears. ”

"Oh. . . I know.. It's okay.. ”

Charlie Ba said a word of rubbing. I hung up the phone.

As soon as I hung up the phone, I lit a cigarette, smoked slowly, and thought quietly.

"I thought about it, if it was poisoning, how to explain the bleeding in the eyes and ears. Because the poisoning takes the stomach, it won't run to the head. ”

Sun Tielong said: "You are right. ”

"If I'm not wrong, 80 percent, the murderer used his voice to kill."

Sun Tielong said: "Maybe you're right, but this method is too roundabout. ”

"Only a roundabout way is the easiest way to get out..."

I slowly stood up and rubbed my eyes。。。。。