The boundless darkness enveloped Meng Lei like ink.

In the empty and huge underwater cave, Meng Lei held a knife in one hand and a harpoon in the other, slowly groping forward in the darkness.

The searchlights of the submarine behind him gradually dimmed as they went deeper.

Everything around seems to have turned into nothingness, hazy, and it is impossible to see the real and the real, which makes people feel strongly disturbed.

In this deadly and dark environment, Meng Lei was extremely cautious every time he swam, and did not dare to let his guard down.

And, in the process of gradually deepening.

Every once in a while, Meng Lei would use the diving knife in his hand to carve a mark on the next rock wall.

In fact, the environment inside the cave is too complicated, with a large number of forks and holes.

It's easy to get lost if you're not careful.

If you get lost in such a place, there is no doubt that there is no possibility of surviving at all.

Once the oxygen runs out, there is only one dead end.

In addition, although the sonar detection system did not detect any danger in the hole.

But on the surrounding rock walls, in the holes that lead to nowhere, Meng Lei always felt that something was squirming in the dark, as if it would attack him at any time.

Even if it was just his imagination, it caused him great unease.

That chilling feeling of tension was troubling his nerves all the time.

Before he knew it, Meng Lei's breathing became rapid, and subconsciously he held the harpoon in his hand even tighter.

Fortunately, along the way, there is no danger.

From time to time, some strange-looking deep-sea swimming fish wandered past Meng Lei's eyes, looking at him curiously.

For these "dinners" within reach, Meng Lei did not choose to do it.

As a result, he was not sure enough to successfully capture the opponent before he escaped.

Second, he didn't want to make extra troubles in this terrifying environment.

If some wounds are caused to bleed during the fishing process, then the smell of blood can easily attract bad things.

At that time, don't leave dinner unresolved, but instead put yourself in, it will not be worth the loss.

A few minutes later, according to the three-dimensional virtual topographic map in memory, Meng Lei turned around a fork in the road.

The lighting above the head clearly reflected that in the passage of the grotto in front of him, a large pile of red ore stood quietly in the corner.

"found it!"

Meng Lei was overjoyed, he hurriedly swung his legs, and swam towards the pile of ore at a high speed.

The system prompt is indeed correct.

The number of copper mines in this pile is indeed considerable, and it can be seen from the size alone.

The iron mine the size of a human head could mine three units of iron. This pile of copper mines, which is half the height of a person, is estimated to have at least ten units of output!

"This time, not only are there enough materials for the fresh water extractor, but also the repair materials for the gravitational ball. It's worth the underwater trip!"

Meng Lei was overjoyed, and immediately took out the hand-held mining tool, approached the pile of copper mines, and went up to a frenzy.

[System prompt: Obtain copper ore *1]

[System prompt: Obtain copper ore *1]

[System prompt: Obtain copper ore *1]

…

The crisp and melodious system prompt sound constantly reverberates in my mind.

Pieces of copper ore the size of fists were separated from the ore pile, and Meng Lei put it into his diving suit backpack.

It didn't take too long for the half-person-height pile of mines to shrink by a large circle.

At this time, Meng Lei, who was concentrating on mining ore, didn't find it at all.

About seven or eight meters away behind him, in the infinitely dark underwater grotto, a yellow light spot suddenly lit up faintly.

The light was very faint and hazy.

It is like a firefly that suddenly appears in the dark night, elegant and agile.

It is like the eyes of some unknown beast, strange and imposing.

That little light lit up very suddenly, without any warning, and the whole picture of its body could not be seen clearly in the dark environment.

Like a deep-sea ghost, it is silent.

Meng Lei, who was working hard in front of him, slowly wandered away.

Meng Lei didn't notice it at all.

At this time, the mining work of copper mines is about to come to an end.

The copper ore heap, which was half the height of a person, was emptied in a short period of time, leaving only twenty centimeters in size.

As of now, this ore pile has provided Meng Lei with 11 units of copper ore, occupying three spaces in the backpack.

When the remaining ores are mined, Meng Lei's harvest this time will probably have at least fifteen units of copper mines.

"I made a lot of money this time!"

At this moment, Meng Lei was in a very happy mood.

Little did he know that in the darkness behind him, there was an inexplicable crisis slowly approaching him.

At a certain moment, when the last piece of copper ore the size of a fist was separated from the rock wall, Meng Lei took it into his pocket.

This ore pile hidden in the deep sea cave has finally been mined.

Meng Lei let out a long breath with a smile on his face.

He hung the mining tool in his hand back on his waist, and was about to turn around and leave.

Out of the corner of his eye, he suddenly caught a glimpse of the darkness beside him, and there seemed to be something strange.

The feeling at that moment was extremely frightening, making Meng Lei's scalp numb.

He was immediately startled and turned his head away abruptly.

As the body turned, the lights on the diving suit hood also sprinkled light into the darkness beside him.

I saw a strange looking fish, just less than two meters away from Meng Lei, staring at him with big pale eyes.

A big mouth full of fangs opened and closed slightly, and under the reflection of the light, it gave off a dark light.

And above its head, a long fleshy thorn bent down between its eyes, with a round unknown organ at the end, emitting a little shimmer in the dimness.

Overall, it looks pretty creepy.

"Fuck!"

Meng Lei was shocked and couldn't help shivering.

The next moment, the boundless chill surged into his heart, and this sudden and terrifying scene scared him back again and again.

"What the **** is this bitch, when did you come here?!"

Cold sweat soaked his back instantly, Meng Lei's heart was beating wildly, and his soul was almost scared away.

In fact, this strange fish appeared too suddenly, and he had no psychological preparation at all.

In addition, its weird shape is like a monster that came out of a horror book. Anyone who sees it for the first time will have a tingling scalp!

At this time, the strange fish who had originally wanted to sneak attack Meng Lei from behind, saw that the prey had already noticed it, and was no longer hiding.

In the darkness, a **** mouth suddenly opened, and the sharp fangs flickered, biting fiercely at Meng Lei!