"Smack!"

Ge Fengdu landed on his feet, and his military boots made a sound, echoing through a straight passage through the stone wall.

Yun Kang "shh

Then I turned on the flashlight and went over, and found that there was a black wall in front of them, and they landed in a long passage, with black holes in front and back, and the flashlight could not reach the end.

The flashlights used by the task force are all military equipment, which are not only bright enough, but also have a range of more than 100 meters.

At this time, Ge Fengdu smelled a strange smell in the air, hurriedly put on the nylon mask, and said in a low voice: "We were attacked in this passage, it was very chaotic at the time, the team members all shot back and forth, but the bullets did not rebound, it is estimated that this passage will not be short." ”

Yun Kang took a cursory look, the distance between the walls on both sides of the stone road was about three meters wide, and the flashlight shone upward, only to see that the stone wall was towering to the top, at least more than 100 meters high, equivalent to more than 30 floors.

He couldn't help but be amazed, judging from the length and width of this stone wall, the scale of the underground engineering building was quite huge, and it was by no means something that a few ordinary Taoist priests could build.

The most strange thing for him was that the stone wall in front of him turned out to be jet black.

Yunkang shone the flashlight and found that the wall was covered with a thick layer of black glue, which absorbed all the flashlight and did not reflect at all.

Ge Fengdu also found the stone wall strange, took out a dagger and picked off a piece of glue, put it under his nose and sniffed it, and said, "It seems to be asphalt." ”

Asphalt is generally used to build roads in the city, so Ge Fengdu is no stranger to this smell, and he can recognize it as soon as he smells it.

Yun Kang also sniffed it, then scanned it twice with his divine sense, and immediately separated several mixed smells, and said, "It's natural asphalt, with yellow phosphorus and pine oil added to it." The ancient people used asphalt to prevent corrosion, this thing is toxic when heated, and yellow phosphorus and pine oil are flammable materials, you have a lot of luck, if you shoot and ignite the asphalt on the wall, you will all suffocate here, no one wants to go up. ”

Ge Fengdu gasped, but he was really fearless for the ignorant, thinking of the dangerous situation at that time, a cold wind came out of the back of his neck. At this time, let him shoot again, and he won't dare to say anything.

He couldn't help but ask: "There are stone walls on both sides, and they won't rot if they are placed for thousands of years, why are they still coated with asphalt to prevent corrosion, is it necessary?" ”

The flashlight shines upward, the more you look at it, the more strange it becomes, there is no elevator in ancient times, and the wall is more than 100 meters high, and it must be difficult to climb up to paint asphalt. And the project is so huge that the length of the stone road is more than a kilometer, and if it is all covered with asphalt, how much work will be wasted?

Yun Kang shut up and didn't speak, he was an immortal cultivator and knew why a thick layer of asphalt was applied to the high wall. But as long as you know this kind of thing, you must not tell Sù Ge Grace, once the secret of the immortal is revealed, it is easy to arouse suspicion.

In ancient Taoism, there is a wall-piercing technique in which practitioners can recite mantras and penetrate earthen or stone walls, even modern reinforced concrete walls.

However, the asphalt-coated wall cannot be penetrated by the immortal cultivator, because the immortal cultivator's flash speed can make the electromagnetic force of himself and the wall disappear, and ordinary walls can penetrate it.

However, the composition and structure of natural asphalt are very complex and dense, and it is difficult to eliminate electromagnetic properties with external force. This asphalt wall is not only anti-corrosion and waterproof, but also prevents immortal cultivators from performing wall-piercing techniques.

As long as the wall piercing technique hits the asphalt wall, it will fail, and Yunkang himself has done this kind of embarrassment, so he knows it very well in his heart. (The theory that goes through the wall can be seen in the unified field theory of physics, which is not too verbose here.) ）

The walls of the alchemy of ancient Taoist priests were often coated with asphalt, because in addition to preventing the wall penetration, it could also block the divine consciousness power of the immortal cultivators. The asphalt wall is like a shield wall of divine consciousness, and no matter how great the immortal's ability is, the divine consciousness cannot sweep into it.

Yun Kang probed his divine sense, and sure enough, he immediately rebounded back, and he couldn't detect anything in the wall at all.

He slowly withdrew his senses, coughed softly, and said, "The main thing we want to do is to save people, don't care why the ancient Taoist priests painted asphalt, this is a matter of research by archaeological experts." Just tell your teammates, remember not to shoot indiscriminately, in case the wall is burned, none of us can get out. As for the rest, don't worry about it. ”

Ge Fengdu knew that Yunkang was right, so he had to nod and agree.

Since he came to Wufeng Mountain, he was curious about a mysterious event here, and at this time he was a little unwilling, took a step back, and said: "Life is really endless, there are so many magical things in the world." When this mission is completed, I will come back again when I have time, and I will have to study it carefully. ”

The two stood in place and waited for a while, and the task force above slid down one after another, untied the ropes on their bodies, stood in a row in the stone path, and then took out a strong flashlight and shone it left and right.

The task force was dressed in black uniforms and wore black helmets on their heads, which were jet black from head to toe. They had just landed, unfamiliar with their surroundings, and they all stood honestly, without making a sound, and at first glance they looked like a row of ghosts.

"Captain, everyone is here, what should we do next?" One of the task forces asked.

Ge Fengdu shone it left and right with a flashlight, and said, "There can't be only stone walls here, let's go ahead and see if we can find another passage." Everyone be careful, don't shoot, it will ignite a fire if it hits the wall, then we will all take a break. ”

The pole scratched his head and asked, "Team Ge, where are we going?" He turned his head to both sides, and the two ends of the stone path were almost the same, all of them were so black that he couldn't tell the front and back at all.

Ge Fengdu slapped him on the back of the head: "You shouldn't be allowed to come, you can honestly follow the team, how can there be so much nonsense!" ”

The pole covered the back of his head and muttered, "You said to go forward......"

Yun Kang raised his hand to tell him not to speak, and at this time, the talisman array disk hanging on his chest was still rotating, but it was rotating very slowly, and there was a faint "da-da" sound.

He turned slightly in the direction of the pointer, his back to the north and south, and the pointer on the array plate "clicked" to a stop, pointing to his left.

He thought carefully about the direction, this long stone road is the direction of east and west, ancient buildings are often used to sit in the north and face the south pattern, often to the left as the respect. As the so-called purple qi comes from the east, the east is the head of the green dragon, and it is the front of the pattern formation.

Thinking of this, Yun Kang had already determined the direction, raised his hand and pointed to the passage on the east side: "The pattern here has set up a formation, and the front is the entrance to the formation, so we can only enter from that side." ”

When the task force heard him say this, he suddenly lost his heart, and turned his head to look at each other, but none of them had a better idea.

A group of people are very entangled in their hearts, this Wufeng Mountain is the place where Zhang Guo cultivates immortals, the base camp of old immortals, who knows what mysterious and strange things will be encountered.

Usually they are only responsible for capturing warriors and fighting with submachine guns, but now they can come to a black stone road, and there is no edge in front and back, and they don't even know where the enemy is, and they can't find a target in the fight.

And the captain didn't let them shoot, and they couldn't use the trick of using a submachine gun against the enemy. This place is dark and rumbling, and you can't see anything clearly, maybe there is danger hidden somewhere, and you don't know if you are beaten and beaten halfway.

The more I thought about it, the more panicked I became, and I also knew that this task was arduous, it was much more difficult to capture the warriors than before, and it was not easy to win a battle, so they were a little timid.

"Captain, if there is really a formation in front, let's all go in, maybe we won't be able to get out. I'll have to leave a few people at the exit to answer it, and when the support from the headquarters arrives, I'll want to blow the wall open. A member of the team built yì said.

When the other team members heard this, they all nodded their heads again and again. The task force came to Wufeng Mountain this time, originally only to arrest the warriors who gathered to make trouble, and they all went into battle lightly and did not bring explosives.

The team members are all from military backgrounds, and what they are best at is using guns and ammunition, but they didn't expect to come to this broken place, they were not allowed to shoot, and there was no explosives in their hands, and their hearts were already bottomless, and they were very unreliable from head to toe.

"Yes, Captain, let's not be unable to save anyone, and put ourselves in again."

"It's okay to give it to the enemy, if you are trapped by some formation, it will be too depressing."

"Captain, you have to think of a way, you can't go forward so recklessly, who knows what's in front of us, waiting for us to throw ourselves into the net."

"Why don't we divide our troops into three roads, go both in front and back, and leave two more people to guard the exit."

A group of people gossiped, and in the end, they all had their own opinions, and no one could make up their minds.

The more Yun Kang listened, the more annoyed and panicked, these task forces were all coaxing outside, their eyes were eager to grow on the top of their heads, and as soon as they went to the secret room underground, they were immediately stunned, and in a blink of an eye, they became a swarm of headless flies.

He snorted coldly in his heart, when a person faces strong pressure and fear, it is easiest to reveal his true nature. The task force's cousin disappointed him too much, they were all hard shells, soft bones, and a bunch of who had no guts.

If you listen to these cowardly mentions, you won't be able to do anything.

Yun Kang frowned, shook his head and said: "We are now at a disadvantage, we have been exposed under the nose of the enemy, if we divide the troops into three ways, or leave people here, it will be even more dangerous, once you are left alone, you will not know if your head is cut off." ”

Hearing Yun Kang say this, the task force also felt scared, and a chill ran on the back of his neck.

Ge Fengdu, who was silent next to him, coughed and said, "There is a brother above who is responsible for answering, so we don't have to waste manpower, quickly find people, and quickly retreat." As for those formations, they are all ethereal rumors, and there may not be any, don't scare yourself. ”

After Ge Fengdu finished speaking, he instructed the team members to prepare their weapons, put away their pistols, take out their daggers, and then began to arrange the formation.

Twelve of them, in groups of three, walked side by side, making a total of four rows.

The stone path stretches back and forth, and it is impossible to say what dangers may be hidden around it. If a single-line column is used, one after the other, as soon as someone on the flank strafes with machine gun fire, they will all fall in a sweep.

So judging from the current situation, just in case, this four-square formation is the safest.

After arranging the formation, Ge Fengdu, Yunkang and Gongzi were in a row and walked in the front to open the way. The players behind them were three meters away from them, and so on.

It is good to keep a distance between the formations, so that in case of sudden danger in front, the people behind will have time to turn around and evacuate.

Before this mission, Yunkang's actions had always been alone, and he suddenly formed a group with a group of people to carry out a mission, and he was very uncomfortable, he was really unaccustomed, and he had a feeling of uneasiness, and he always felt that someone was sneaking behind him. He couldn't keep looking back and backwards, so he had to secretly poke out his divine sense, but it was too far away for his divine sense to detect anything.

He suppressed his irritability, raised the flashlight above his head, and tried his best to shine the road ahead. The road went straight ahead, and the flashlight was dark in the distance, as if there was a cloud of fog shrouded in it, and nothing could be seen clearly.

The three people in the first row of them, Ge Fengdu walked in the middle, Yunkang was on the right, and the pole was on the left, because the three of them were the first to explore the way, their spirits were highly tense, and they were always vigilant, so the footsteps were very soft, and they hardly made a sound.

But the team members in the back just followed them and didn't have to think about anything else, so their steps were heavy, and their military boots stepped on the stone floor, making a "crackling" sound.

The crisp and loud sound of footsteps sandwiched between the two walls, far away into the passages on both sides and above, sounded like surround sound, with footsteps on all sides.

Yun Kang's heart shook for a moment, and he found that this voice was very wrong, if it was just a passage before and after, why did the sound come around in front of him?

A flash of inspiration flashed in his mind, could this be a circular channel of the word "Hui"?

If that's the case, then it's a big problem. The passage was so long, at least a thousand meters, that they kept walking with their heads down, and they couldn't feel the turn at all, and they would soon lose their direction, and they couldn't even find the exit when they came.

Yun Kang suddenly had a feeling of being hairy, since the passage was deliberately designed like this, it must be to trap the intruder, and he would never be able to get out.

What about the compass, Yunkang's scalp suddenly exploded, and the person who designed the channel will definitely find a way to destroy the compass!

Instinctively, he sent a danger signal in his head, immediately stopped, and shouted: "Wait a minute, I think of one thing, which of you has a compass, take it out and take a look." ”

When everyone heard his shout, they all stopped and were stunned, Ge Fengdu hurriedly went to the backpack to turn over the compass, and the team members behind also noticed that something was serious, and they all quickly untied the backpack.

"Click, click!" There was a sound of slow footsteps, which seemed unusually abrupt in the empty and quiet stone path.

Everyone immediately froze, their faces turned pale, they had all stopped, so whose footsteps were they?

——