Liu Erwa, who fell to the ground, twitched, and the look of fear on her face still did not subside.

Lin Feng squatted down and slapped Liu Erwa a few times, waking Liu Erwa up.

"Brother Feng...... Yes! ”

After seeing Lin Feng, Liu Erwa let out a miserable scream and fainted again.

"This guy faints and has nightmares."

Lin Feng shook his head, took out half a bottle of mineral water from the satchel Liu Erwa was carrying.

Unscrew the lid and pour it on Liu Erwa's face.

After waking up again, Liu Erwa finally woke up.

"What do you see, scared like this?"

Lin Feng was curious.

Liu Erwa is usually not afraid of heaven and earth.

"Uh...... I was buried alive by Brother Feng, ......"

Liu Erwa said weakly.

Lin Feng was stunned.

It's a terrible thing.

It is estimated that it is also something that Liu Erwa fears deep in her heart.

"As long as you don't betray me, what am I going to do when I bury you?"

Lin Feng knocked Liu Erwa's head.

Liu Erwa'er scratched her head and smiled, "That's right!" ”

Next, it's time for Qi Yao to decrypt it.

After looking in the cave for a long time with a flashlight, Lin Feng still found the mechanism.

A golden statue next to it had a hideous face and opened its mouth wide.

Lin Feng put a rope on the head of the statue and climbed up to take a look.

The head of the statue was empty, and when it was struck, it made a hollow sound.

Then a conch shell that has been artificially processed is pulled out of its mouth.

Lin Feng jumped off the statue with a conch shell.

After Qi Yao looked at it, he said, "There are many sounds and things in this world that we can hear.

But the brain doesn't let us hear and see.

The space here was originally closed, but now it is open.

When the air flow is flowing, it will cause this conch shell to emit a special frequency sound.

We don't think we can hear it, but in fact the brain receives it.

At the same time, the sound of this frequency has a certain hypnotic effect, which can make people confused and hallucinate......

However, there is only one hypnotic effect on the same person. The next time the brain becomes defenseful, ignoring the sound. ”

Lin Feng nodded.

Qi Yao's explanation is very reasonable.

"It's a treasure!"

Lin Feng asked Liu Erwa to put it in his pocket.

This thing can kill people invisibly.

I don't know if it's useful after taking it out.

"I was almost scared to death just now, I thought I ......"

Lin Feng muttered and shook his head.

Liu Erwa looked at Lin Feng with wide eyes.

I didn't expect the Great Demon King to be tricked too.

"Professor Qi, you weren't scared, were you?"

Liu Erwa asked curiously.

Qi Yao shook his head.

The Town House Divine Beast will not be affected by this sound.

Unless you catch a cockroach and put it on her......

The three of them continued on their way.

Lin Feng asked Qi Yao, "You just said that there are actually quite a lot of things we see and hear, and the brain doesn't let us notice it, of course, it's to protect us."

Is there a possibility that, in fact, the world is full of ghosts.

Or is it some other spirit creature that we thought was terrifying, we saw it, but our brains actively blocked it? ”

After Lin Feng finished speaking, Liu Erwa was taken aback.

Qi Yao shook his head, "I don't know either!" ”

"Brother Feng, I'm afraid of ......"

Liu Erwa said suddenly.

"You're afraid of a ball!"

Lin Feng glared at Liu Erwa.

Liu Erwa said: "My dad died in a car accident while driving a truck, and there was my brother in the car at that time, and I often dreamed of them. Did you think the two of them had been with me all the time? ”

"Your father and your brother have been dead for so long, so they should have been reincarnated early!"

"That's right!"

……

Nothing strange happened.

There were more and more statues in the cave, and white bones appeared.

When they reached the end, a large pool of water appeared in front of them.

The water in the pool was constantly surging, and Lin Feng could hear the sound of water flowing under his feet without having to put his ears on the stone wall.

There should be an underground river underneath.

Look up again and look overhead.

Countless pieces of metal hung from the roof of the cave, all of which were hung from red silk.

When air flows, these metal pieces ...... No, it's supposed to be the pieces of gold that will collide with each other and make strange noises.

In addition to the air currents, the thunder outside can also cause the gold flakes to vibrate.

This was also the sound that Lin Feng heard when the gold collided when there was thunder before.

"Brother Feng, do you think this is the tomb of Genghis Khan?"

Liu Erwa asked curiously.

Lin Feng shook his head, "No, this cave is even older. There are at least more than a thousand years, and Genghis Khan died until now, less than eight hundred years. Strangely enough, though, there are spells similar to those in Mongolian. ”

There are a lot of puzzles in this world.

For example, Sanxingdui is.

Now there's a puzzle, which is how did those five people from decades ago get here?

After searching around, Lin Feng set his eyes on the pool in front of him.

Could those people have come in by diving?

After thinking about it, Lin Feng shook his head again.

Not like.

At that time, without advanced diving equipment, it was impossible for people to hold their breath and pass through the long underground river.

Most likely, like Lin Feng, he came in with a hole.

Liu Erwa's wiring soon illuminated the entire hole.

Except for a few dead corners, this underground space, which is more than 300 meters long and irregularly shaped and inclined downward, is brightly illuminated by the lights.

While Qi Yao and Lin Feng were looking around, Liu Erwa used a flashlight to shine on those dark corners.

Soon he made a discovery.

"Brother Feng, come here!"

Liu Erwa shouted.

Lin Feng ran over to take a look, and a cave that was just big enough for a person to pass through appeared in Lin Feng's eyes.

"I'll crawl over and take a look!"

Liu Erwa said and climbed in.

Liu Erwa, who has learned a lot of scientific knowledge, is much bolder.

He had a rope tied to him.

Lin Feng slowly loosened at the entrance of the cave, not letting the rope run too fast.

Ten minutes later, the rope moved twice.

Lin Feng immediately retracted the rope.

After more than ten minutes, Liu Erwa's head came out first.

"Brother Feng, there are very wide stone cracks outside, I don't know how far away, some places are narrow, some places are wide, and some places are bottomless......"

Liu Erwa said, picked up her mobile phone, and opened the photo he took to show Lin Feng.

At this moment, there was a 'bang' from the edge of the pool.

Lin Feng turned his head to look and saw Qi Yao holding a rusty metal chain in his hand.

Pen fun pigeon