Yu Fei and the other five strode in. There were no mummies here, but Yu Fei felt that this might be a hand of cards left by aliens, which was used as a backup if another pyramid was destroyed.

The sparrows flew in before, and Yu Fei understood the purpose of this place after just one glance.

Yu Fei's purpose of coming here is very simple, to avoid future troubles, and to see what the lizard wants to do here.

They walked along the hidden passage step by step. If they step on the dust under their feet, they will leave footprints, because no one has entered here for thousands of years, and the dust here is very fine. Have you left?

After a few steps, I felt the dust being kicked up, which was a bit choking.

Yu Fei frowned, stopped, turned around and said, "Put on a gas mask!"

Yu Fei and the others were very well prepared. Although they had all entered the pyramid before, they all had gas masks prepared in their backpacks.

The others didn't ask why, they took out the gas masks and put them on their faces.

This place has been closed for thousands of years. If there are bacteria left behind thousands of years ago, they are actually quite deadly. Humans may have lost their immunity. Don't think that the bacteria in the past were not strong. On the contrary, before humans appeared, the earth was a world of bacteria.

, the bacteria of that era were actually very powerful, but some later mutated, and some could not adapt to the environment and disappeared, but in such an isolated place, there might still be some.

Just when the dust started flying, Yu Fei had a bad premonition and quickly asked everyone to put on their gas masks. Although some dust had been inhaled, it was better than nothing at all.

Then everyone turned on the lights above their heads, and the lights above the heads of the five people intertwined, illuminating their surroundings brightly.

This is a new tomb, and there may be some mechanisms left in it, especially those targeting living creatures. After all, what they welcome here are mummies who are between the dead and the living.

Just after walking a certain distance, Yu Fei felt a little strange again, because he seemed to hear something, but it seemed that there was no sound. He turned around and looked at the others, and no one was abnormal.

Yu Fei frowned, thinking that he shouldn't have hallucinations, so he continued to move forward, but he felt that the sound that seemed to exist and yet did not exist seemed to be getting stronger.

Yu Fei accidentally saw the dagger at his waist, and found that the handle of the dagger seemed to be trembling rapidly. Looking at the others, he found that not only the daggers were trembling, but also everything about the same size on their bodies seemed to be trembling.

Very slight trembling back and forth.

Yu Fei raised his hand and gently pressed it on the dagger, causing the dagger to stop.

"Brother Yu, did you find anything?"

No one else noticed anything unusual.

"At this moment we are surrounded by sounds, but we don't know it."

Yu Fei finally understood where the Ruoyouruowu sound he felt came from.

"What sound? What sound?"

Sun Laizi looked around curiously. He did not hear any sound and felt that it was too quiet here.

"Ultrasound, of course we can't hear it."

Yu Fei shrugged.

"Then what should we do? Can it hurt us?"

Liu Huifang asked curiously. She was the only one present who had never gone to school for a day, so she didn't understand what ultrasound was.

"Okay, kill people invisible!"

Yu Fei nodded.

"Is there any way?"

Ma Laodao asked directly. To be honest, he had never encountered this kind of situation before, and he didn't know how to solve the problem if he couldn't see or hear the sound.

"Just find the source of the sound and destroy it."

Yu Fei has no good way, just like how do you shut up a fool who is not afraid of your threats? The easiest way is to either go up and block his mouth, or kill him, both are ways.

That is to say, the source of the sound no longer makes a sound.

Since I had no choice but to move on, after walking for a while, suddenly my feet, which should have been very stable, actually seemed to shake slightly when Yu Fei stepped on them.

"Ready to fight!"

A bad premonition appeared, and Yu Fei quickly shouted to everyone.

Everyone hurriedly pulled out the long knives from behind, but after waiting for a while, nothing appeared.

"Walk!"

The feeling of danger coming from his sixth sense was still there. Yu Fei knew that his judgment was correct, but it was not a problem to stand all the time, so he had to call everyone to continue moving forward.

"It's so itchy!"

Suddenly Li Yingying shouted from behind.

Yu Fei hurriedly turned around to take a look and found that Li Yingying had reddish-brown blisters on her hands, and even the exposed skin began to have blisters.

"What's going on!"

Liu Huifang shouted in fear.

"It's an allergy! I know it!"

Yu Fei immediately understood. He guessed that the slightly shaking stone released a substance that made living creatures very susceptible to allergies. No wonder he felt that danger was always there.

"I don't have any on my hands!"

Sun Laizi also shouted.

"I feel so hot!"

Liu Huifang held Li Yingying with one hand and fanned the wind with the other hand.

Even Ma Laodao was no exception. He stretched out his hand and showed it to Yu Fei.

Yu Fei knew that these were allergic reactions, fever, blisters on the body, etc.

Yu Fei quickly introduced the spiritual energy into Li Yingying's body, and the powerful effect of the spiritual energy immediately began to take effect. Her body's autonomous ability was stimulated, and new blisters soon stopped appearing, and the previous blisters quickly began to scab off.

He hurriedly used his spiritual energy to help others solve the problem. Only Yu Fei, who had a strong body, did not suffer from allergic reactions.

But this thing is really vicious. Yu Fei just discovered that everyone's situation has deteriorated very quickly. If Yu Fei hadn't been able to use spiritual energy to help everyone solve it, some people might have fainted by now.

If other teams broke in unintentionally, they might all be dead, and they were killed in an inexplicable way. I don’t know what happened.

Continuing to move forward, Yu Fei found that he had stepped on a slightly swaying stone several times in a row. After all, this thing was silent. In fact, no one would notice it if he took it a few times. The effect of continuous use was indeed good.

This mechanism alone was enough to kill at least hundreds of people. Yu Fei felt that he had to admire it. This was something developed based on the characteristics of human beings!

It's just that this team has a lot of talent, which probably the people in the research institute didn't expect.

People who practice martial arts pay attention to a central balance. For real masters, before the next foot is firmly planted, the other foot always holds the center of gravity. Therefore, even if they encounter danger, they can quickly adjust their posture, which is even more impressive for Yu Fei and the others.

Everyone is on high alert now.

So when Yu Fei's feet gently landed on a seemingly complete and huge stone surface, his toes just clicked and he quickly retracted, and the others also quickly stopped.

Yu Fei raised his hand to signal everyone to back off, and everyone took a few steps back together. Yu Fei took out a lighter and threw it gently, but when the lighter fell on the seemingly solid ground, it flipped violently, as if

The overturned table was buckled down, and the lighter was missing.

Everyone's eyes widened in surprise. It was a delicate mechanism that could be activated by a lighter. If someone stepped on it, they would be flipped over and thrown somewhere.

In order to confirm whether the mechanism was disposable, Yu Fei threw another box of cigarettes over. The ground turned over again and the cigarette box disappeared.

It is not a one-time mechanism, but it can maintain balance very well when it is not affected by external forces.

But this stone

The board is not very wide, about five meters.

"Brother Yu, we can jump over directly!"

Sun Laizi suggested it, and then he was eager to try it.

"You think you are the only one who can do it?"

Yu Fei rolled his eyes.

"No, don't you just jump over? What mistake did I make!"

Sun Laizi said aggrievedly.

"The person who designed the mechanism didn't think about it. What if there is a mechanism behind it? If you jump over and just land, can you jump back?"

Yu Fei asked Sun Laizi.

Suddenly Sun Laizi lost his temper. Maybe what Yu Fei said was something he hadn't even thought about. In movies and TV shows, isn't this kind of mechanism like breaking through a level? After a while, doesn't it take a while for the next one to appear?

But in real life, this is not the case at all. Ma Laodao has encountered many serial traps. This is a common trap routine. If you rely on the experience learned from film and television dramas to rob tombs, you will basically not survive a day.

Then Yu Fei took out another thing, which turned out to be a glass ashtray. These were all the daily necessities Yu Fei had stored in Longzhu Space. The four or five kilogram glass ashtray was thrown out by Yu Fei and flew over.

It hit the next rock.

boom!

The glass ashtray was smashed into pieces, the sound was very clear.

Boom!

The next moment, the stone wall on the side was like a hammer. It protruded fiercely and hit the other wall, and then quickly retracted it. The ashtray was originally broken into several large pieces, and then was smashed into powder in an instant.

, if this were a person, he would immediately become a piece of meat.
To be continued...