In order to prevent him from falling asleep, Bai Yunfei forced himself to walk back and forth in the tomb to drive away his sleepiness.

And when Bai Yunfei inadvertently walked to these coffins, Bai Yunfei vaguely heard the cry of a baby in this newly appearing passage!

The sound seemed to be vague, very small, and if it weren't for the unusual silence in the burial chamber at this time, and the sound of a needle dropping, there would not have been this tiny cry of a baby at all.

Even then, it was intermittent, and only by listening intently could it be barely heard.

It can't be an auditory hallucination, right?

Bai Yunfei leaned on the coffin, bringing his body closer to the entrance of the passage, trying to hear more clearly.

But the voice was gone.

Bai Yunfei said in his heart that he may be so sleepy that he has auditory hallucinations, and this is indeed the case, once a person is seriously lacking in sleep, it will cause nervous system disorders, auditory hallucinations, visual hallucinations, etc.

And just as Bai Yunfei was about to leave this passage and continue to wander aimlessly, there were several faint baby cries.

Bai Yunfei immediately had an ominous premonition.

Although Bai Yunfei is just a novice who has just participated in the dungeon expedition and has no experience, some things have nothing to do with experience.

Just like this baby crying, repeated appearance, it has been proven that it is not an auditory hallucination, it is real, then it is even more terrifying.

A mausoleum that is thousands of years old, and there is a cry of a baby inside, is there anything more weird and terrifying?

Bai Yunfei was extremely nervous in his heart, originally after he finished his shift for an hour, there were still two people who were not on duty, Bai Yunfei should wake up the next person and go back to make up for sleep.

But I was so frightened by the strange cry of the baby that the drowsiness disappeared without a trace.

It's better to simply take care of the rest of the time by yourself, so that everyone can sleep well.

So Bai Yunfei stood by the coffin, staring intently at the newly emerged passageway, and strengthened his vigilance.

Originally, Bai Yunfei wanted to wake everyone up, but after these tosses, everyone was too tired and needed to rest.

And for the time being, there are no new dangers, so Bai Yunfei can't bear to disturb everyone, so let's wait and see what happens.

When the time was almost up, Bai Yunfei woke everyone up.

Everyone was sleepy, moved their tired bodies, and began to prepare to march towards the hidden palace that Su Lao Ghost said.

Bai Yunfei told everyone about the cry of a baby just now, and everyone looked at each other, vaguely feeling that this was not normal.

But now, where is the turning back? No matter what is in front of it, there is a mountain of swords and a sea of fire.

Thirteen was seriously injured, and his basic mobility was still there, but he was no longer suitable for charging in front of him.

Although Su Lao Ghost has a lot of experience, he is old after all, and although he is not in tune, he is a "heavyweight" figure in this team.

To put it mildly, no one can do without him, so his safety must be guaranteed first.

And Bai Yunfei and Niu Gang, although they are vigorous and have good quality, they are inexperienced, and second, they are new after all.

Besides, everyone also knows that their addition is somewhat tricked, so Cao Longxuan is not too embarrassed to let them do this kind of life exploration.

In the end, the heavy responsibility of acting as a pathfinder undoubtedly fell on Sun Er.

Sun Er was actually not lightly injured, but it was lighter than Thirteen, and even if he slept for a while, he still limped when he walked.

But Cao Longxuan only had one look, so Sun Er tied a mountaineering rope around his waist, staggered to the coffin, turned over the coffin with the help of everyone, and climbed down the passage.

According to the agreement, he didn't have to go very far, but mainly to understand the situation inside, and by the way, to see if he could find out what the baby's cry was all about.

In addition, this passage is too narrow, once you can't figure out the situation, everyone rushes in, and there is no room to deal with the accident, which really responds to the sentence, called "catching turtles in the urn".

There are a few big living people in the crowd, how can they not let the toads in this ancient tomb be caught as turtles, and the shame is really lost home.

Therefore, everyone agreed with Sun Er that as long as they could determine how far this narrow passage was, after discovering a new situation or finding a spacious space, he would immediately turn back and report the news, and then discuss.

Time passed minute by minute, and when more than 20 minutes passed, everyone couldn't hold their breath anymore, and even began to wonder in their hearts whether Sun Er had encountered an accident, and then they saw that the mountaineering at the entrance of the passage shook strongly, and everyone stretched out their heads to take a look, only to see that Sun Er had climbed back.

So everyone worked together and pulled the rope to pull him up.

Sun Er sat on the coffin, gasping for breath, Niu Gang handed him the military kettle, he took a few sips of water, and continued to breathe.

Seeing that his face was flushed and his breath was short, so Old Ghost Su asked him how the air was below, his face was so red, was it caused by insufficient oxygen to eat, and some lack of oxygen?

He replied that he felt that his breathing was quite smooth, but the passage was narrow, and it was very uncomfortable to move, and the entire tortuous passage was almost completed by crawling, so he was a little tired, and it was natural for him to breathe.

Bai Yunfei hurriedly asked him if he had noticed the baby's cry, and he said that the narrow passage first went straight down, then there was a not-so-long horizontal direction, and then it began to climb up again.

When he climbed out of the upward section, there was a stone cave mouth above, which seemed to be dug by hand, but the cave was a relatively wide space, shining into it with a flashlight, there were many natural stalagmites, stone pillars or something, it should be a natural cave.

This cave is relatively large, and the main thing is that there are too many stalagmites and stone pillars inside, and it is also very dense, and the flashlight is blocked by these stalagmites and stone pillars, and it does not shine to the end, I don't know what the situation is further away.

According to what everyone said before he went down, when he got out of this narrow passage and there was enough space for everyone to move, he should come back to report the news, so he didn't stay there long, and hurried back to deliver the news to everyone.

And he also mentioned that in the process of exploring the path, he also heard the cry of a baby more than once, the sound was very strange, although it may be far away, it is not so real, but it still makes him feel creepy.

After listening to his description, everyone basically has a rough spectrum in their hearts, because the Mogao Grottoes belong to the junction area of the Loess Plateau and the Western Desert, and the loess structure and the mountain and stone geological structure want to be mixed, so the underground long-distance engineering or mausoleum will inevitably encounter these geological structures repeatedly.

The stone passage in front of the crowd must be surrounded by loess structures, and in order to prevent collapse, bluestone slabs and stones are used to build a supporting passage.

And as the passage to this unknown tomb stretches forward, it is natural to encounter the geological structure of the mountain.

But what I didn't expect was that there are underground karst caves here, and those stalagmites, stone pillars and so on, are obvious karst cave geological characteristics.

This shows that there is an underground river nearby, otherwise it would not have formed a karst cave in the long years of tens of trillions of billions.

However, it is a good thing that there is a cave, at least the breathing problem is guaranteed, after all, it is much stronger than the lack of oxygen in the closed dead space.

Cao Longxuan waved a gesture, and everyone packed up and began to march towards the narrow passage.

The passage on the ground, which appeared in the middle of the four coffins, was too narrow for a single person to climb upright.

If you use the way of carrying a rucksack, it will definitely not work for people and rucksacks to climb down at the same time.

So they decided that the man would go down first, and when a man had gone down, they would put his knapsack down with a rope, and then the man could drag the knapsack forward.

In this way, a group of several people went down into the vertical passage.

At this time, Bai Yunfei used a flashlight to shine on the surrounding environment, and the passage was still made of stone, but it was much narrower than the passage of the predecessor of the giant pit, and the others were no different.

At the bottom of the shaft-like passage, the passage began to change to transverse, as Sun Er said.

Because the passage began to become horizontal, the space was still not large, so everyone dragged their knapsacks and crawled forward.

Before going down this narrow passage, everyone had also studied whether it was necessary to send someone into the cave or a further place to investigate, and it was not too late for everyone to go down together after finding out the situation.

In such a narrow space, everyone's ability to move is very limited, and once something happens, they all become trapped beasts in a cage, how to deal with it?

And Cao Longxuan and Su Laogui's opinion is that if there is danger, they may not be able to hide from it.

And if you send someone to explore the way in front, if there is something powerful waiting in front, this person may not be able to cope with it, and the probability of accidents is too high.

In the words of the troops, the possibility of this "combat attrition" is too great, and it is better to face it together and take care of each other, which is better than facing the danger alone.

Think about it, how can there be a baby's cry in the grave? Maybe it's some kind of terrifying, evil existence, if it's something more terrifying than those corpse toads, a person must have no return.

As soon as everyone pondered it, it really made sense, and they got into this narrow passage without hesitation.

This passage is indeed too narrow, and it is not only inconvenient to move when you get up, but it is mainly too depressing, and once the distance is too long, the sense of oppression becomes more and more intense.

In particular, the actions of the people are not like civil engineering operations or geological exploration underground, although the environment is narrow and depressing, but after all, it is the kind of work that is above board.

And everyone has already weakened their momentum psychologically, and they have experienced so many strange and frightening encounters, and the psychological pressure can be imagined.

This kind of psychological state has been accumulated for a long time, and then suppressed in this narrow channel that always feels dangerous, Bai Yunfei believes that if the distance is long enough, it will crush everyone's spirit to collapse.

Bai Yunfei was the penultimate to come down, and behind him was Sun Er, who had come in to explore the road.

When Bai Yunfei was crawling in front, he heard Sun Er's wheezing sound behind him being extremely heavy, and he felt very abnormal.

Although it is true that the air in this narrow space is limited, it is not so suffocating as this.

His wheezing sound was not quite a human wheezing anymore.

Bai Yunfei grew up in the mountain village of his hometown of Xiangxi when he was a child, and when the two bulls fought on the top frame, fighting in the dark, the two cows were already sweating badly, exhausted, and foaming at the mouth and nose.

Bai Yunfei was worried that something was wrong with him, so he stopped, and used his flashlight to shine on the masonry ground in front of him to prevent direct fire from blinding him.

Through the afterglow of the masonry and stone, Bai Yunfei saw that Sun Er's face was flushed, as if he wanted to drip blood.

And his lips have become purple-red and swollen, especially his eyes are a little scary, and the white eyeballs have become red eyeballs.

His state at this time was similar to the state that Bai Yunfei recalled when he was a child, the bull fighting in his hometown when he was a child, and the state he fell into in the last dying battle.

Bai Yunfei was shocked, could it be that he had fallen into some evil? So he asked him, "Brother Sun, are you okay?" ”

Because Bai Yunfei stopped, he could only be forced to stop.

After listening to Bai Yunfei's question, Sun Er replied hoarsely: "Bai... Brother Bai, I'm fine, but I'm so hot and uncomfortable, uh-"

As he spoke, he seemed to be too hot to utter a low, suppressed growl.

Bai Yunfei still felt strange in his heart, but seeing that he had a clear mind and normal language when answering the question, he didn't think much about it, and hurriedly crawled forward.