Chapter 161 [Doorway]

When getting into the submarine, Chen Nuo sat in the second row.

A diver was responsible for controlling the driving, while Chen Nuo deliberately did not look at the values ​​​​and directions on the instrument panel. Instead, he sat down and looked out the window.

After the two shuttle-shaped submarines, which were like glass covers, were placed on the sea surface, the crane hooks on the ship were released, and the propellers on the submarine started to start. Then they slowly turned around, lowered the bow, and headed underwater one after another.

Pricked down.

After the waves carried rolling foam, everything soon fell into darkness.

When moving underwater, the submarine travels very smoothly, and you don't even feel much vibration.

Hisako Ishii was sitting next to Chen Nuo, his expression was very calm, but his eyes were always looking at the sea water outside the glass window.

Chen Nuo glanced back. In the cargo hold at the back, the octopus in the glass cabinet seemed to be still very calm. However, Chen Nuo's mental power received feedback from the octopus. The octopus's mental consciousness seemed to have begun to show some signs of it.

A hint of restlessness!

Two submarines, one behind the other, were sneaking underwater.

The searchlight in front of the submarine had been turned on. While gliding on the seabed, Chen Nuo looked out the window and could see some swimming fish and some coral reefs on the seabed from time to time.

It feels like the submarine is going all the way down the continental shelf.

After a while, a patch of reefs appeared on the continental shelf ahead, and the submarine moved quickly through them, as if walking into a forest of rocks on the bottom of the sea.

The submarine has slowed down. Sneaking in this place obviously tests the driver's skills.

At this time, Hisako Ishii was a little nervous. Chen Nuo saw that the woman's fingers were already clenched.

suddenly.

"It shouldn't be your first time coming down here," Chen Nuo asked.

"Um?"

Chen Nuo said lightly: "You already know this place. And... there is no need for octopus here for the time being. In other words, we have not reached the real 'doorway' yet.

I guess it’s not the first time you’ve come down here since you learned about this place.”

"Yes, I came down several times, and then I also arrived at the 'doorway' and stopped there." Hisako Ishii shook his head: "But I never got any detailed results."

The diver responsible for driving in front suddenly said: "Radio silence will enter in two minutes, countdown!"

Hisako Ishii nodded: "Contact the sea surface for the final time and send the coordinates."

"yes!"

Hisako Ishii then told Chen Nuo: "The radio signals will be blocked down below, and other communication equipment will malfunction. I have no way of knowing the principle, but it is like this every time I come down."

Passing through the stone forest on the seabed, a deep trench appeared in front of us.

The two submarines entered the trench and continued downward.

"The depth is 150 meters. We will arrive soon." The driver continued to report the situation.

Chen Nuo looked out the window...

It was already dark in the trench, and the water outside was like a deep dark space. In this place, it seemed that the only light source was the light of the submarine's searchlight.

Just at this time.

"Arrived at the entrance!"

The diver shouted excitedly.

The two submarines slowly adjusted their orientation in the water, and then floated somewhere in the trench.

Chen Nuo immediately leaned forward, behind the driver, and looked ahead.

In the direction of the searchlight, the light shines on the rock wall of the trench. Groups of swimming fish are densely wandering back and forth in a certain position, and vaguely, an oval-shaped, deep tunnel can be seen in it!

It's just that it's so dark that you can't see anything at all.

"There are fish blocking the way, emit sound waves to disperse the fish." The driver began to announce slowly while controlling the vehicle.

The two submarines must have come down many times. Although radio communication is no longer possible in this place, the two sides have a tacit understanding.

Submarine No. 2 quickly adjusted its position and came around behind Submarine No. 1 where Chen Nuo was.

After Submarine No. 1 launched a device similar to sonic shock, soon, a large group of densely packed fish surrounding the undersea tunnel seemed to have been alarmed, suddenly exploded and dispersed in all directions!

"Enter!"

The driver's voice is still very calm.

When entering the tunnel, Chen Nuo felt that the ship's hull seemed to vibrate slightly.

The tunnel is not too wide, but it is enough for a submarine to shuttle through it, but the speed is much slower.

He stared carefully at the tunnel outside the window.

The tunnel wall was full of potholes and pits, and it looked like a natural undersea tunnel, but Chen Nuo always felt something was wrong.

The tunnel has twists and turns, and the submarine has reduced its speed to the extreme, but occasionally it will accidentally collide slightly, and some raised coral reefs on the tunnel wall will be smashed to pieces.

That is to say, the outer shell of the scientific research submarine is hard and has been specially treated. In addition, the speed is extremely slow and does not cause any damage to the hull. However, in this narrow and sealed space, it is also the bottom of the sea. The ship caused by this collision will

Even though the whole body was shaking, it still easily created a feeling of fear and tension for the people sitting in the boat.

Chen Nuo looked calm, but in his heart, he felt more and more strange.

In the tunnel, his mental power did not stop releasing at all. Along the way, he was slowly lingering around the submarine with a trace of mental power tentacles, especially in front!

It is no exaggeration to say that his sensing space is even wider than the space detected by the driver sitting in the driver's seat through the instrument!

But as the tunnel went deeper, Chen Nuo discovered something strange.

The mental power he released seemed to be suppressed bit by bit!

The distance that could originally be detected twenty meters ahead was slowly reduced to...

Fifteen meters...

Ten meters...

The distance that his mental power can detect is getting smaller and smaller.

Chen Nuo also tried to increase the release of his mental power, but to his surprise, there seemed to be an invisible force similar to a shield in this place, suppressing his perception of mental power!

Just like... the air and water are becoming more and more viscous, and the mental power flowing and swimming in them is becoming more and more stagnant!

Finally, the hull began to shake slightly.

The driver seemed relieved: "Arrived at the entrance! Prepare to float."

…

As the submarine emerged from the water and left the tunnel, it entered a huge underwater space!

It seems that due to the special balance of terrain and water pressure, a waterless space appeared here.

A huge circular arch hole with a height of nearly ten meters.

After the two submarines returned to the water, they stayed in the water with a piece of ground next to them.

After all the searchlights on the submarine were turned on, the originally dark cave was finally illuminated.

Chen Nuo sat in the submarine and looked outside...

The walls of the cave are probably corroded by water vapor all year round. They look very scary, with jagged rocks and a feeling of hell.

"Prepare equipment, put on an oxygen mask, and leave the ship!" Hisako Ishii took a deep breath and issued the order.

In this cave on the seabed, the air is very thin and the oxygen content is extremely low.

Several people left their seats together, entered the cargo hold at the back, and began to put on oxygen bottles and masks.

"Each oxygen bottle can be stored for two hours." Hisako Ishii said slowly: "If an accident occurs, we must return to the submarine immediately. The submarine will stay here and then be sealed. The oxygen stored inside the submarine will automatically

Oxygenate... Remember, once the oxygen is exhausted, return immediately!

We have tested the air here and found that the oxygen content is very low. A normal person would become incapacitated in no more than ten minutes in an environment with such low oxygen content!

Oxygen bottles, each person carries two.

One is used to go forward. Once the first oxygen bottle is exhausted, it must be returned immediately to ensure that the second oxygen bottle can support it until it returns to the submarine!

That is, go, two hours of oxygen.

Return, two hours of oxygen.”

Chen Nuo smiled: "Why don't you bring more oxygen bottles?"

"This is... a calculation that takes into account the weight of the human body..." As soon as Ishii Hisako said this, he suddenly closed his mouth.

Chen Nuo directly tied two oxygen bottles to his body from the cabin, and then grabbed two more!

"I can bring four with me, no problem." Chen Nuo smiled.

In fact, if it weren’t for the size of the oxygen bottles, there would be no space for four of them on our backs...

Chen Nuo can actually bring more!
To be continued...