"You mean that the cave we're in now is the kind that can kill people with sound waves. [ads:This site has a new URL,Shorthand method:strawberry,.cmxsw]" Tian Liwen's eyes widened, and she asked Crazy Six with a frightened face.

Maniac Six nodded: "Although I can't be sure yet, but judging from all kinds of signs, there is indeed such a possibility, about the mechanisms of various ancient tombs, we have all heard more or less before, but the use of sound waves to prevent tomb robbers, I'm afraid this is the first time I've seen it, it's really terrifying, and it's too ingenious." This may be one of the unique skills of the Bashu Wu family. ”

Everyone was silent, what should we do next, whether to quit or continue to go inside, according to what Xiao Lei and Crazy Man Six said, maybe we haven't reached the deadliest part yet, that is to say, if we go inside, after arriving at a certain location, the sound wave in that place is the strongest after amplification, strong enough to shock us all to death.

When everyone hesitated, Xiao Lei suddenly said: "I think we should continue to go inside, because I suddenly came up with a way to crack this terrible 'sonic enhancement technique'."

All of us were excited, and listened attentively to Xiao Lei continue: "This cave is actually a sound wave amplifier, which can amplify the general sound waves enough to shock people to death, and the reason why this cave has this function is because of its special structure, as long as we destroy its structure, can't we crack it with this function?" ”

"Destruction of the structure of the cave? It's not so easy to do, this cave is all hard granite, do we have **, how can we destroy the structure of the cave? The female translator asked puzzled, and everyone had the same doubts.

Xiao Lei smiled slightly, turned around and said to the madman Liu: "Senior, you have studied the meridians so much, you must know the importance of acupuncture points, as long as you gently prick the acupuncture points, you can change the flow of the meridians entirely." ”

Crazy Six listened to Xiao Lei suddenly heard the meridians, as if he thought of something, and quickly nodded and said: "You are right, the acupuncture points are the hubs of the meridian flow, as long as the slightest action is applied, it will affect the operation of the entire meridians, the so-called pulling a hair and moving the whole body, is this what it means・・・・・・・ do you mean to destroy the structure of the cave, so that it does not have an amplifying effect on the sound waves, you only need to move your hands and feet in the key parts?" ”

Xiao Lei nodded and said: "Yes, that's what I mean, to build this cave, we must have a deep understanding of the law of sound wave transmission, you have also seen, the height of the top of this cave is always changing, and the height of each section is not the same, the reason for this is to continue to amplify the sound waves, we only need to change the structure slightly, the amplification of sound waves will be seriously disturbed, so that it will not harm us." ”

Next, Xiao Lei repeatedly observed the cave we walked through, he was in a place, and suddenly listened and said: "Look, the stones on the cave wall in this place are not the same color as other stones?" ”

After his reminder, we all shone with flashlights, looked up and observed carefully, and sure enough, as Xiao Lei said, there is a large square area on the top of this cave, emitting a faint reddish, and the stones in the cave are all brown, so they can be clearly distinguished.

"This red stone, which is inlaid into the roof of the cave, is not accurate to say that it is a stone, it is actually a kind of glue. This glue is at the bottom of some mountain lakes, and only after the lake water dries up can you see it, and this glue has a very strange property, that is, it can have a strong resonance with sound waves and make a great sound.

Therefore, all of a sudden, this red cement is often used to apply around the war drums, so that the sound of the war drums is extremely loud. That is, it is the superior material for the manufacture of war drums.

You can take a closer look, every ten meters, the top of the cave, and on the ground, there will be this kind of red cement, the reason why the sound wave can be repeatedly amplified, is because of the effect of this cement, and the separation distance of this cement, are very consistent with the law of sound wave propagation, the ancients are really great, can come up with this method, the sound wave amplification, and the calculated position is extremely accurate, it is really amazing. ”

We certainly don't have Xiao Lei's understanding of sound waves and the like, so we don't have a deep understanding of the beauty of this structure, but after he said this, we took a flashlight and took a closer look, and found that as he said, every ten meters, there will be this kind of red cement on the top of the cave, or on the ground in the hole, and it will appear alternately.

"Do we have to destroy all these red clays in order to crack the cave's amplification of sound waves, so we can't do it, just now I used a small hammer to tentatively knock on the kind of clay, and found that they are harder than stones."

Sister Li said a little frustrated.

And Xiao Lei smiled very easily and said: "Don't damage all the cement at all, as long as you damage one of them, the propagation of sound waves will be completely messed up, just like dominoes, as long as one of them is removed, then the entire propagation process will be terminated." ”

It turns out that this is the case, then this is easy to do, we found a piece of this red cement on the ground, and then Xiao Lei pulled out his sapper shovel, and smashed it with a chisel, but the hardness of that kind of cement was more than imagined, as if it was like steel, and under a knock, there was not even a white spot left. What can I do?

Xiao Lei also stopped, wiped the sweat on his forehead, frowned and thought, I hurriedly took the sapper shovel from his hand, and continued to smash it violently, still without any effect, my hands were numb, fortunately this is not an ordinary sapper shovel, otherwise it would really be curled.

"Grandma drops, is this clay? It's harder than steel", I scolded, raised the sapper shovel again, and was about to continue smashing, but I heard Xiao Lei say: "Xiao Ming, don't smash it again, I'm afraid it's useless to smash it for a day, I suddenly thought of a way." ”

Hearing Xiao Lei say this, everyone was shocked and hurriedly looked at him, but for some reason, Xiao Lei suddenly wanted to speak and stopped, as if there was something unspeakable.

"Oh, Xiao Lei, what's the solution, you are talking quickly, why are you getting up?" I anxiously urged Xiao Lei to say.

Xiao Lei coughed lightly, and then said slowly: "Actually, this method is also very simple, that is, to pee on it, this kind of cement will become soft as soon as it encounters some substances in the urine." ”

After listening to Xiao Lei, it was really a little embarrassing, because half of us are women, and now we have to pee on this piece of cement, which is really embarrassing. Everyone looked at each other and thought it was a little funny and a little embarrassed.

It was the cousin who broke the silence first, and said to everyone with a smile: "Since that's the case, well, the ladies all turn around, Xiao Ming, you pee on it." ”

This is the most "ridiculous" order issued by my cousin in our previous operations, Sister Li, Hongmei and Kenya, they can't help but cover their mouths and snicker, I myself feel a little fever in my face, but in this case, I can only do what my cousin said.

Before I went into the cave, I drank a lot of water, just because I was nervous, I didn't feel the urge to pee, but now when I want to pee, I feel that I really can't bear it, when all the women in the cave turned their heads, I took off my pants and peed on the mud.

It's strange to say that the piece of cement, which was originally as hard as steel, actually became soft under the pouring of urine, as if it had been melted, and became a kind of gelatin, and it also emitted a strange aroma, which was really strange.

"Oh, Xiao Ming, your urine still smells." Sister Li turned her back to me and said jokingly, before she finished speaking, everyone couldn't help but giggle, but I didn't know what to say for a while. After peeing, Xiao Lei dug out the red cement with a sapper shovel like digging silt, and piled it up against the cave wall.

"Now it's okay, we don't have to worry about being shocked to death by sound waves." Xiao Lei said with relief. And we went inside.

Those very deep tunnels, we have seen before, are the kind where the six madmen hide, the kind of tunnels that extend in all directions, hundreds of miles long, and have different cave entrances, some of which are in old houses, some of which are under boulders, and some of which are in the deep mountains that are inaccessible to people.

But it was the first time for us to walk such a straight and long cave, and before coming to Mr. Chen's place, we had experienced a cave built by the Japanese in the mountains, and the kind of cave was also very straight and long, which was still a small comparison with the cave we are walking in now.

We walked inside for nearly an hour, and when we shone our flashlight inside, we couldn't see the end.

"Cousin, I think it's very strange, supposedly, this kind of straight cave, and so deep, the air inside should be very thin, because it has only two holes at most, but why don't we feel uncomfortable, but feel that the breathing inside is unusually smooth, what is going on?"

Hongmei is still more careful, if he hadn't said it, I really didn't think of this.

"That's a good question, I've been thinking about this for a long time, and I seem to have figured it out just now - have you noticed that on the mountain outside this cave is a forest, and that kind of tree is a kind of pine tree peculiar to this mountain.

This pine tree is extremely vigorous and can grow in the cracks of the stone, but the most special thing is the root of this pine tree, the root of this pine tree, which can pass through the stone, that is, this cluster of roots, can all penetrate into the stone, making the stone like a honeycomb.

Speaking of the question you just asked, when we walked in such a deep tunnel, we didn't feel holding our breath, it is possible that there are pine roots, which have penetrated through the layers of stones above and penetrated into the top of this cave, so this cave will have countless tiny ventilation holes, which are connected to the outside, so the ventilation problem of the cave is solved. ”

My cousin's answer sounded very reasonable, and his observation and reasoning skills were indeed very good.

"Well, I see, when I was observing the roof of the cave just now, I saw some tiny holes, and I didn't pay much attention to it at the time, but when I heard my cousin say this, I knew what was going on." Xiao Lei's observation also corroborated his cousin's conjecture.

At this time, Madman Six suddenly said, "By the way, do you remember what we learned? The owner of this tomb is a monarch in the Spring and Autumn Period, proficient in the art of immortal cultivation, after this mausoleum was built, he brought a group of people to live in it when he was alive, and the breathable design of the cave may also be related to this.

Because the tombs of the dead are very particular about not being permeable to water and breathing, and this kind of tomb passage is obviously designed by the living people living in it. ”