I couldn't help but feel a little flustered, and the position of my neck was cold. I still can't believe that I beat the merman so easily just now, and feeling good about myself in this state is also fatal, so my current mentality is still in the position.

I haven't seen the combat power of the old generation, but I don't need to think much about it when I look at the tendons and flesh of that body. If this is the case, it is also possible that the merman was injured by the old generation, so it may be possible for it to turn around again and run away. If the merman had been injured, then I could have beaten it.

I picked up the fishing knife, and I looked around the corner behind me, and nothing unusual happened. To be on the safe side, I once again leaned on the wall of the hallway and listened close to my ears for a while.

The clatter sound was still ringing, and I was even more sure that it was not the sound of the waves crashing against the wall of the boat, but for a moment I couldn't tell what was going on.

There was nothing but the indiscernible sound, it was empty, and I slammed the wall a few times, and it was only a series of echoes.

Walking past the revolving door, I pulled the door over. I wanted to see what the door shaft was, but what I didn't expect was that once the door was closed, I couldn't push it open.

It's still a one-way door, I cursed. I knew it would never open from the inside, but I tried it a few times and pulled the door in its direction, but it turned out to be as I thought, there was no room for focus.

The mechanism of the door is very ingenious, according to the normal mechanical structure, this style of revolving door can be opened no matter which direction it is, as long as you can use force. But this door is different, I am in him, I have no strength at all, almost pushed until I gasp, and the revolving door is not moving.

At this time, it was too late to regret it, but I secretly felt like I wanted to slap my mouth, you said you had nothing to do, what are you doing so cheaply.

The way back is completely broken, and then you can only continue to move forward. There has been no corpse of the old generation here, and there is only one bloodstain, it is estimated that it may be the companion of the thunder soldier, so the old generation must be nothing serious.

Because now that I know that the mermaids are not the only ones we made, I didn't dare to shout loudly, because if you shout in this kind of place, the sound will be easily amplified.

Speaking of mermaids, I also began to feel a little strange, that kind of eyeball-like thing must not be a stone, but a bit like a wax-sealed pill. Now that it is said to be a merman, I just think that it is similar to what is recorded in ancient books. But I really don't know what this fast-growing creature is.

The hallway was similar to the previous one, but much shorter, and it broke all my understanding of the space of a large ship. "The authorities are confused, but the bystanders are clear." Ancient proverbs are not just casual sayings.

As I walked, I thought about it, and probably built the structure of the cabin in my head, the circular cabin was in the center of the big ship, where the hull structure was most stable, so it should play a very important role.

Lu Liang...... Lu Liang. ”

Just as I was thinking about the problem and moving forward. These two crisp cries instantly made my scalp explode. But in an instant, I could tell that the voice was from the old generation.

When I searched around, I couldn't see any of the old people.

Will this guy be invisible?

I dismissed the thought and took a few steps to the end of the corridor. The general direction I guessed was fine, and the corridor ahead was to turn left, and the cabin was indeed a hollow shape.

But even after I got here, I still didn't see where the old generation was. Just as I was wondering, I heard a few more voices from the old generation where I heard the voice of the old man just now.

I went back to where I heard him call my name, and whispered a few times, "Old man? Where are you? ”

I hadn't heard a sound for a long time, and when I banged on the wall a few more times, suddenly he opened his mouth again.

"Lu Liang, is that you? If yes, knock on the floor twice. ”

I'm a little puzzled, this person is nervous, is he communicating with me now?

"Where are you? It's coming out. I didn't know why, so I didn't answer him.

After a long time, about a minute, I could feel that the direction of his voice was somewhere near me, but the location of the sound could not be determined at all, it was like a place with loudspeakers everywhere, and the sound was coming from every direction in all directions.

"I'm weird here, I can't hear you." After a long silence, the voice of the old generation sounded again, and after the words were finished, the place fell into silence again.

It's weird, can't hear me? Asking me to knock on the floor didn't work. Just as he was about to scold, the old generation's voice rang out again after the previous sentence.

"Vibration, vibration, I can feel a slight vibration here." The old generation also seemed to think that I would not understand, so he immediately added a thoughtful sentence.

Knowing why, I immediately slammed the floor twice, indicating that I would be here again. After knocking, I felt that I should convey some more information, but if a simple sound can convey some usable information, but the old generation can only feel the vibration, then how can I express my meaning? I thought about how bats communicate with ultrasound, but I don't have that special skill for my grandmother.

"I'm in a very special environment, it's a room, and I stepped on the air before I fell off." The voice of the old generation came from all sides of me again.

One-way sound transmission, this is a bit awesome, it seems that the place where this configuration can be used is the interrogation room in the spy war movie. But the fundamental principle of one-way sound transmission in that kind of place is a close-range microphone transmission, and it is very difficult, or almost impossible, to actually use the building structure to create that effect.

"Are you still there?" The old generation really can't hear my voice, and every time he says a word, he has to wait for a long time. I slammed the floor a few more times, and I pushed harder to make his sensation clearer.

It was very difficult for me to communicate with him, I could hear him, but I couldn't convey what I meant, I couldn't exchange ideas with him. Therefore, it is basically impossible to rescue him, because we have no way to understand the problems of the environment through communication. Then all my actions have to wait for him to come to a one-way conclusion before I can carry them out. In the true sense of the word, he is the thinking brain, and I am the body with the power to act.

"I plucked a hair and stuck it to the ceiling, which was a very low space, like a mezzanine, and someone walking through the hair would get a slight vibration. You look for it, I fell near here, it's like an active protective measure, you can see if you can find the flap. ”

The old generation understands the current situation very well, so my only action is to recruit. After looking around, I found that this would not work, and within ten meters of all directions, I could not find a single gap where I could insert the knife.

Our communication is still necessary, because I have a problem in mind now, and I have no way to convey it to him at this time. I could hear his voice, and he could feel the vibrations from me banging on the wall or walking, but that didn't tell us that we were close.

His voice came from all directions, that is, in the space where he was, his voice could be transmitted to the position where I and I were in some way, and it was amplified and diverged through a kind of amplification device, so that this sound became a three-hundred-and-sixty-degree stereo without dead ends. It doesn't make any sense for me to judge his position by sound.

And he can feel my vibrations, but any medium can transmit vibrations, even what I say can be reflected on the wall to cause vibrations, but this extremely small vibration cannot be felt without instruments.

I'm going to do an experiment here to see how far this vibration can travel through the hallway. I plucked out a piece of hair, got a little spit on one end, and stuck it to the ground.

I weighed the knife in my hand a few times, and then threw it out, this time towards the wall around the corner. Sure enough, it passed with a bang, and it was stuck straight on the wall around the corner. Almost as soon as the knife flew out, I turned my gaze to the hair, not daring to come out at all, for fear of affecting the accuracy of the experiment.

When the knife was inserted into the wall, the hair did not move, almost the same as it was. The wall was less than 20 meters away from me, and after several experiments I continued to do so, I finally came up with the maximum possible distance, twelve meters.

Only the vibration within 12 meters can cause the hair to shake more clearly, so the position of the old generation from me is no more than 12 meters in a straight line. I was happy in my heart, but I couldn't convey it to the old generation, so I slammed the floor a few times again.

"Found it?" The old generation was slightly excited.

I thought about it for a long time and didn't think about how to tell him, so I evenly intervened the tapping sound and knocked it three more times. I mean, "No, no, find." "I just don't know if the old generation can understand the meaning of my words of consciousness and image.

After a long silence, the old generation did not reply, I don't know if he was thinking or depressed. The main problem was that I couldn't tell him my solution, but if we were to switch the two, it would be easy to solve.

In fact, as long as the person on the outside constantly adjusts the position of the vibration point, and the person on the inside observes the strength of the vibration of the hair, we can roughly judge the most likely area. But to the old man I was mute, he was deaf, and we couldn't see each other. This gap can almost be regarded as a dimensional difference.