Under the orange aperture of the flashlight, Luo Zhen saw a rusty iron ladder and disappeared straight into the darkness below.

A cold breath came to his face.

Luo Zhen shuddered, and suddenly felt that the temperature around him had dropped a lot, and goosebumps all over his body.

"At least, it's ventilated." Luo Zhen thought secretly in his heart.

He paused, pulled a black phone out of his pocket, then lit up the screen and looked at the signal again.

There are two squares!

Luo Zhen couldn't help but breathe a sigh of relief, fortunately, the scenic spots here have comprehensively strengthened the signal.

He hid the phone under a few stones on the edge of the "cliff", and after two hours, if he didn't come back to cancel the setting, the phone would automatically dial to his colleague Xiao Yang, and according to the agreement, Xiao Yang would find his location according to the GPRS of the phone, and then get Luo Zhen's whereabouts, and then come to support.

Of course, it is best not to have any accidents, Luo Zhen hopes that his son and himself can get out of the way, and the old father can be safe and sound.

Looking at the deep passage that seemed to have no end, Luo Zhen swallowed a mouthful of saliva, turned around and began to slowly step down the iron ladder.

…

The light of the headlamp shone on the cyan stone wall in front of him, slightly dazzling. The vertical passage couldn't be forgotten up and down, Luo Zhen listened to his sullen heartbeat, as if he was in a narrow iron can, and he was a little out of breath.

Listening to the soft sound of the soles of his shoes stepping on the iron ladder, Luo Zhen felt a dampness in his nasal cavity, and the further down he went, the more obvious it became, and he couldn't help but wonder, could it be that there was water underneath?

Is it an underground river?

Luo Zhen lowered his head and tried his best to let the light from the headlamp shine downward, wanting to see if there was any reflection.

However, before the beam could go far, it was completely swallowed up by the pitch-black air. Even in dense fog, visibility is not so low, not to mention the fog in the light, and even the dust is very sparse.

Something seems wrong with this channel.

Luo Zhen took a deep breath, stabilized his mind, tightened his hand on the iron ladder, and continued to go down in an orderly manner.

Ten minutes later, Luo Zhen began to be uncalm.

This passage is too long! At his own pace, counting from the entrance, he has now descended at least two hundred meters. But when I looked down, the light still couldn't reach the edge, as if I had never moved.

Luo Zhen stopped, he took out his mobile phone from his pocket, and wanted to open the app for measuring altitude in order to verify the depth of his current position.

But he glanced at the screen and was so frightened that he almost didn't throw his phone out.

The images on the screen are all reversed!

Not only is it the opposite, but it is also upside down, as if you have turned your phone screen upside down and then looked through a mirror.

Luo Zhen wiped his eyes with the back of his hand, took a few deep breaths, and then looked at his phone again.

Still, the reverse is reversed.

"Calm down," Luo Zhen said to himself, "I must be too nervous!" ”

He did a few more minutes of mental construction, and began to silently recite the mobile phone numbers of his father, ex-wife and son in his mind, trying to regain his sanity and get rid of the illusion of the present.

However, after several failures, Luo Zhen had to accept the reality that he could not see normal images now.

He wanted to put his phone back, but after a little thought, he clicked on the app that measured altitude.

Although the numbers are reversed, they should not affect the recognition.

It took a moment for Luo Zhen to recognize the upside-down number.

h=20000m

20,000 meters?

Ran into the stratosphere by yourself?

Luo Zhen actually had an urge to laugh, this app is too nonsense, and this broken mobile phone, what the hell?

He put his phone back and began to think seriously about a very important question-

Do you want to go on, or just go back?

Thinking that the old father was likely to be under this passage, Luo Zhen's desire to retreat immediately faded. He sighed and decided to move on.

But this time Luo Zhen became more cautious, he estimated that he had climbed for about five minutes, and then took out his mobile phone again to check the altitude.

This time the heart in his chest tightened again.

h=20100m

Obviously going down, but the altitude is 100 meters higher?

This...

Luo Zhen frowned, and pinched his arm hard, and the stinging pain immediately radiated like a spider web, followed by a little scorching.

It seems that my feelings are not numb.

But when exactly did the hallucinations begin?

Heaven and man fought for a while, and the strong psychological pressure prompted Luo Zhen to decide to climb back and try, if people didn't find themselves and had a psychological breakdown first, it would be more than worth the loss.

This time, with his phone in one hand and a ladder in the other, he wanted to see the changes in the readings with his own eyes.

…

After climbing up for two minutes, the reading became 20090.

It's really funny, I'm obviously rising, but the altitude is falling, how can everything be reversed?

Wait, the other way around?!

Luo Zhen was excited, he looked at the abnormal mobile phone screen again, and suddenly understood something.

Ever since I entered this underground passage, things have become extraordinary. Could it be that everything here is upside down from the real world?

So, if you want to go back to the ground, should you go up or down?

…

Luo Zhen finally chose to climb back, no matter what, he no longer had the courage to continue going deeper.

After about ten minutes, he noticed that there was a light on the top, and he could feel a faint air current.

Back to the ground!

Luo Zhen couldn't help but breathe a sigh of relief, and his heart almost hit his chest. The moment he poked his head out of the ground, he was almost scrambling up the iron ladder.

When he finally stepped on the solid ground, he felt his hands and feet tremble.

After a little rest, he was ready to get up and retrieve the phone he had just put here. But he only took a few steps forward, and suddenly realized that he had just overlooked a very important issue.

When he went down, he closed the wooden door, but when he came up just now, the door was open!

Who opened the wooden door?

Just as he was thinking about this question in a cold sweat, a loud and noisy voice came from afar.

Luo Zhen hurriedly turned around and found that it was another tour guide who was about to arrive with the next group of tourists. He immediately crouched down and backfilled the stone to cover the wooden door.

"Uncle, what are you doing?"

A young child's voice suddenly sounded in his ears, startling Luo Zhen.

He staggered to his feet, and then looked back, and saw that it was a little boy of about four or five years old, looking at him with his flickering eyes open.

Luo Zhen was a little incredulous, and he immediately looked back to look around, looking for the little boy's guardian.

At this moment, there was a sudden noise from under the stone wall.

"Uncle, is that your phone?"

The little boy asked in a milky voice, pointing to the corner.

Only then did Luo Zhen realize that it was his mobile phone ringing under the stone wall. He took two steps forward to pick up his phone, then pressed the answer button.

"You've finally taken it!" The voice of my colleague Xiao Yang came from the phone, "Where did you go?" It's been more than four hours, and I'm in a hurry! ”

Luo Zhen was stunned, "What four hours?" I haven't been down for less than half an hour! ”

"You're talking in your sleep, Luo Zhen?" Xiao Yang's tone was a little urgent, "I'm almost ready to let Lao Zhuang file a case, is your GPRS not open?" I can't locate you. ”

"It's really been four hours later?" Luo Zhen held his phone in disbelief.

"Okay, it's okay, I see you're dizzy, go back to the bureau!" Xiao Yang said quickly, and then hung up the phone.

Giggle~

A light laugh came from behind.

Luo Zhen turned around and found that the little boy was looking at him and smiling.

There was a hint of cunning in his eyes.

Luo Zhen suddenly got goosebumps.