"Now? What's going on out there? I asked, looking into Chen Zaihai's eyes. His expression was serious, and Talia let go of her grip on me from behind, and neither of them said anything, as if they were listening to something with their ears pricked up.

"Shhhh Be quiet, listen carefully," Chen Zaihai said to me in a low voice.

Listen carefully? What to listen to? Isn't it just the sound of sandstorms that you are used to hearing outside, what else can there be, such a fuss. I thought so, but after a while I realized that something was wrong, and the sandstorm outside seemed to be much quieter than before. Is this sandstorm finally coming to an end? This is definitely good news, and strangely enough, I don't see the slightest element of joy on the faces of the two of them.

Not only did they not have a smile, but they became more serious, as if they were facing a great enemy. It made me wonder, what were the two of them wary of?

"What's wrong? Isn't it just a little quieter? That's a good thing, maybe we'll be able to get out of here in a while. "I said." What exactly are you nervous about? ”

"So it's all said and listened, and there's something else mixed in here. Things are not as rosy as you might think. "Talia shoved me from behind and told me to put my ear against the inside of the cab to get a serious feeling. Her movements were a little rude, and the push pushed me directly against the wall, and I immediately felt a pain in my cheeks, and the cold touch spread from the contact surface.

It seemed that the temperature outside still hadn't come back to life, and the bump was really indistinct, and after the clang, I could only hear the buzzing tinnitus in my ears against the wall.

I glanced at Talia with resentment, why do you have every weight in your hands? I saw that she was tidying up her chest after pushing me, why was her clothes messed up again? Oh yes! Eighty percent was messed up by my neck when she hugged me just now, no wonder she pushed me so hard, she definitely didn't want me to turn back and did this on purpose.

That's why I said that if you don't want me to take advantage, don't make that kind of misleading action yourself. I rubbed my aching cheeks and thought helplessly.

"Lao Su, don't complain so much, listen to what kind of sound is outside, don't you think it's familiar?" Chen Zaihai glanced at the two of us. Although your tone and expression are serious, I don't think your boy's eyes are constantly glancing at Talia's chest

However, I don't think this atmosphere is the time to pierce him, and after they say this, I do begin to feel that the wind outside seems to be mixed with other strange sounds.

The sound was so soft that I would have leaked it if they hadn't reminded me. It's very regular, it appears every few seconds, and strangely it doesn't change much for a long time, and I wonder if I'm having auditory hallucinations.

What is this sound? As I listened, I felt my back grow hairy, but it kept repeating. Indeed, as Chen Zaihai said, I have an inexplicable sense of familiarity with this voice, and I feel that I have just heard it not long ago.

I listened to it for a while, and I suddenly noticed that it had changed. The original melodious elongated sound gradually became faster, and the frequency of whining gradually accelerated. I know what this means, the Doppler effect, which we have all popularized in universities, and this change should not be caused by a change in the sound source itself. It's that it's getting closer and closer

"What's going on? How did this sound become so obvious? Talia asked, a little scared.

"Let's hurry up and think of a countermeasure, this thing is getting closer and closer to us." I lifted my head off the cold inner walls and said to them.

"Old Su, do you think this thing is familiar too?" Chen Zaihai continued to ask.

"I do feel like it's on my lips, but I can't say it right away. Anyway, this stuff does feel familiar to me. I pinched my brow, trying to remind myself of what it was, but to no avail. The name seemed to be in my throat, but I couldn't remember it.

"What now? The sandstorm has also become smaller, is it time for us to act? This voice gives me a very bad feeling. I proposed.

Chen Zaihai and Talia still looked a little hesitant, and the two of them kept exchanging glances after listening. This way of doing this made me unconsciously feel irritated, what do they mean by excluding me like this, and I can just say what I think. Originally, I was in a very bad mood because of the dream I just had. I thought Talia's comfort had dispelled it, but now it had quietly returned.

"What Lao Su said is reasonable, let's leave this place while the limelight is small." Chen Zaihai finally agreed.

"That's right, we're here to search for the task force's whereabouts, so we can't just stay here and die. I don't know if I can find any more clues about them," Talia nodded.

"No problem, remember the guy at the lift. Although I am a little sorry for him, he did use his death to give us a clue, and the task force must have come here along the train track. Chen Zaihai has already begun to pack his things and get ready to hit the road.

"Yes, there is still hope. Su Zhenpeng, what are you doing in a daze? You proposed to leave, don't you mean you don't move? Talia looked at me a little strangely.

The feeling of irritability was still surging in me, and I forced myself to suppress it. They didn't do anything wrong, after all, I came up with the idea first, and it was okay to discuss it with each other. At this time, it seems that he is too petty to be angry with them.

"Nothing. I still paid a little attention to the voice, and I listened carefully for a while," I found a reason to prevaricate. It wasn't really a lie, after all, I did notice that the voice was getting closer

Just do it, all of us began to hurriedly pack up the equipment piled together, as before, medical supplies and ammunition and other bits and pieces of things were carried by me, Talia and Chen Zaihai took some of the precision instruments we had just maintained, and all the other things were handed over to the engineers.

The weapons are still in the 54-style style, and the others are carrying the Czech style, and I will not complain about this unfairness now. I always felt that some danger was approaching us.

Chen Zaihai took the lead, followed by the four engineers who were protecting Talia in the middle, and I was the last to break the line. In this way, we walked out of the broken locomotive.

As soon as I came out, I felt that the sandstorm around me had become noticeably smaller, and the air had slowed down to the point where we could breathe freely, although it was still full of sand. While we were dodging the sandstorm, the train seemed to be partially buried again, and the sandtop was approaching the entrance to the cab where we came out.

I can't imagine what would happen to us now if the sandstorms hadn't diminished. Eighty percent had already been buried alive, and we still underestimated the intensity of the sandstorm, and I could feel everyone in front of me secretly pinching a cold sweat for themselves.

Chen Zaihai, who was at the front, lit a torch that we had made a long time ago, and the engineers in the back also turned on a miner's lamp and turned it to astigmatism mode as an auxiliary light. There is a reason why we have not dared to use torches before, which is common knowledge in cave exploration. Although we are from the Meteorological Bureau, we usually don't go to any caves, but we have been well educated as survival knowledge.

Because of the nature of our work, we also inevitably go to Yunnan, Guangxi, a super humid southern region. The subtropical vegetation there is very dense, and there are many underwater caves and tectonic caves underground. And there are many holes that are vertical, and the most pitiful thing is that most of them are blocked by dense bushes, and you look at the same place as the peace, maybe the next foot will directly step on the air and fall, which is very dangerous.

Especially in such deep caves, you should never ignite a fire without careful measurements. Some caves are filled with colorless, odorless, flammable gases that can explode at the slightest bit, leaving the people inside with no bones left. This is definitely not alarmist, once Chen Zaihai and I received a mission to go to Guangxi, and we had to conduct a two-month observation and measurement of the rainy season there.

The first month was uneventful, and the second month we decided to go deep into the jungle to complete the next steps. In total, we came dozens of people, and finally divided into four groups into the jungle.

But in the evening, we came back in three groups, and the rest of us didn't know where to go. This kind of accident is not uncommon in the jungle climate survey, and we didn't worry too much about it at the time, and methodically found some locals to go back to them.

But when we were ready, we were about to go. Suddenly there was a series of loud noises from the depths of the jungle, followed by a flood of fire. The movement was so loud that it eventually attracted all the nearby police and fire brigades, and a group of people struggled for three days and three nights to avoid a huge fire in the deep forest.

Afterwards, we concluded that it was probably the lost team that accidentally fell into a cave full of flammable gases, and due to their mistakes, the gas in the entire cave was detonated.

But now we don't have that kind of worry, the place is as vast as the ground, and the air circulation is so good that even if there is any flammable gas, it is impossible to explode.

With these lights in front of me, I found a lot of details that I hadn't noticed before. I always thought we were falling off a cliff, but now that idea needs to change. Without the strong sandstorm obscuring my vision, I can easily see things tens of meters nearby.

The train fell straight down, so we came out facing a cliff. Now I can see the volcanic rock wall in front of me, and the signs of its weathering are very obvious, and there are strange bumps and depressions everywhere. What surprised me even more was that I saw a similar rock wall a few dozen meters behind us

It turned out to be a small canyon! I can't tell how deep this thing is, it's pitch black above, and the light can't find the head above.

There was also a huge dent a few meters above the wall behind me, and there was a lot of rubble scattered underneath the dentation. It seems that when our train fell, the front of the train hit the opposite rock wall first, and then it became like this. This explains why we pass out.

We were all taken aback, and we didn't know what to do for a while. I just stared at the canyon for a few minutes. We barely had any, and that strange whining sound was almost above our heads

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