The submarine's propulsion and vortex thrust canceled each other out, leaving it stationary in the whirlpool.

Pitch blackness surrounded us. After passing through the "light board," there wasn't a single glimmer of light.

Only a "board" separated light and darkness.

Han Yu guessed that the "light board" might be a type of marine diatom capable of bioluminescence. They likely gathered and grew there because of an energy source.

Darkness itself was a danger signal. Many massive, monstrous fish in the deep sea liked to lurk in the shadows, waiting for an opportunity to strike.

There were already too many astonishing and inexplicable things in this ocean. We didn't delve further into the question of the light.

"Can you find the source of the current?" Rui Yi asked anxiously.

Jennifer held her forehead and said, "I'll try!"

Based on the water flow and the submarine's rotation, Jennifer finally located the direction of the current in the pitch-black ocean.

"Full speed ahead!"

Jennifer started the submarine's engine at maximum power, heading towards the source of the vortex. We could clearly feel the submarine's turbulence. As we went deeper, this turbulence became more obvious. Later on, it felt like a large truck driving at high speed on a gravel road, bumping so much it made us want to vomit.

Jennifer suddenly said to us, "Our propulsion power is insufficient. We can't go any deeper..."

Her voice trembled because of the shaking.

I thought, are we going to fall short?

Rui Yi asked Jennifer, "Is there any way to continue forward and break through to the very center of the vortex?"

Jennifer hesitated for a moment, "Part of the submarine's power maintains the stability of the hull. If we supply that power to the propulsion engine, we might be able to try. But doing so would cause the submarine to spin rapidly with the direction of the vortex. I'm worried... the submarine can't withstand this torsion, which could cause the hull to break."

Hearing Jennifer's words, everyone fell into fearful contemplation.

"Moreover, we may not be able to withstand this high-speed centrifugal motion. It could tear our internal organs apart," Jennifer added. "The submarine can't maintain this turbulence for long either. What should we do?"

It was time to make a decision.

At this time, everyone looked at Rui Yi with great tacit understanding.

Rui Yi asked Jennifer, "How long will the spin last?"

Jennifer replied, "If we can break through at the fastest speed, it may be less than a minute. If it doesn't go smoothly, we will be thrown out of the vortex within three minutes."

"Okay, let's try it. Everyone, find a safe position and fasten your seat belts," Rui Yi said.

"In ten seconds, the submarine will turn off the side thrusters, and the rear thrusters will be turned on to the maximum." Jennifer fastened herself tightly in the cockpit and said to us, "The next journey will be very bumpy. Passengers, please be careful."

Ten, nine, eight,

Seven, six, five,

Four, three, two,

One...

I silently counted down in my heart, waiting for the submarine to accelerate.

The moment the side thrusters were turned off, the submarine began to spin. The spinning speed became faster and faster. As the side thrusters worked with the straight thrusters to move forward, the entire submarine began to slowly move against the water like a drill.

I felt like a soybean in a soymilk machine, being torn apart by the high-speed rotating motor.

Professional pilots can normally withstand a maximum load of seven or eight g's, but the centrifugal load we were bearing was at least eight g's. Everyone in the submarine, including Jennifer, fell unconscious under this load that ordinary people could hardly endure.

I don't know how long it had been when the fatty shook me awake.

The fatty was strong, and he was the first of us to wake up. After waking up, he quickly checked whether the others were injured and then woke them up.

I was old and weak. Everyone else had woken up, but I hadn't. Finally, the fatty pinched my philtrum and slapped my face to wake me up.

My head was dizzy, and I didn't know which direction was which. I squeezed out three words with difficulty: "Did it succeed?"

Rui Yi was also a little dizzy. She slowly helped me up and told me, "We passed through the center of the vortex floor..."

Rui Yi helped me to the periscope. I leaned over and looked through the periscope—the submarine was floating on calm water.

I was puzzled. How did the submarine suddenly come to the surface of the sea from the depths of the ocean?

No, I looked closely and realized that we were not in an open sea, but in a closed space surrounded by water. On the other side of the water wall was a ghastly darkness, but this closed space seemed to have a light source, illuminating the entire space.

On the surface of the water next to the submarine, I saw a vortex with a very regular circular water hole on it, as if some force was maintaining the vortex.

Jennifer told me that we had just passed through this water hole.

None of us expected that the bottom of the vortex would divide into two spaces.

In that part of the ocean, many physical phenomena were the opposite of reality, such as the inverted submarine, and the water flow of the vortex being pushed outward from the center bottom instead of being sucked inward. On the other side of the vortex, where we were now, everything seemed to have returned to normal.

After Han Yu recovered from her dizziness, she expressed her thoughts, "This space is like a bubble in the deep sea. Forcibly opening up a space underwater must require a huge amount of energy. The vortex may also be caused by this energy."

...

It was the fatty who had the sharpest eyes. He spotted a small black dot in the distance through the periscope—"It looks like an island!"

The fatty told us his discovery.

So, according to the fatty's discovery, we steered the submarine towards the direction of the small black dot. As the distance narrowed, the black dot became larger and larger, and we were able to see its full appearance.

It was indeed an island. The island was covered with black stones, some high, some low, some large, some small, like a stone pile. At first, I thought it was just a pile of messy stones, but when we got very close, I realized that this was not a pile of messy stones at all, but a stone city. There was also a giant pyramid at the edge of the island.

The light at the top of the pyramid was like flowing gas, misty and diffused throughout the entire space.

I subconsciously surmised that this was built by people!

Inside the strange ocean, there was a strange space, and there were even man-made buildings in the space. This was really incredible.

Before this, we even suspected that we had strayed into an alien space, but judging from the architecture of the island and the shape of the pyramid, we might still be on Earth.

These were the traces of axes and chisels passed down from ancient civilizations, the crystallization of ancient human wisdom, no mistake.

Approaching the island, the fatty couldn't wait to open the hatch of the submarine, but Jennifer stopped him.

"Air!"

Jennifer prompted.