Jennifer pointed to a set of readings on a device and said, "Look, the air outside isn't normal. The oxygen levels are low. You'll pass out in no time out there."

"Are there any toxins in the air?" Zoe asked.

Jennifer replied, "That, I can't detect..."

We took out the oxygen tanks from the diving equipment and counted them. There were exactly six, one for each of us.

"One oxygen tank will only last about three hours. Be sure to return to the submarine within three hours!" Jennifer emphasized.

Zoe said, "The situation here is complicated. Everyone, try to stay together and don't separate."

The Fatty was experienced in wilderness exploration, so he led the team.

We put on our gear, strapped on the oxygen tanks, and climbed out of the submarine, landing on the island one after another.

The island was located in the very center of the space, surrounded by nothing but water.

The island was huge. We couldn't see from one end of the island to the other. We had no idea how far the island stretched.

The stone city on the island was built of various stones, in a simple and primitive style. The basic principles of architecture could be found in the structure of the buildings, which must have been the product of ancient wisdom.

The Fatty led the way, occasionally turning back to ask if I had any special feelings, if I could sense some special presence.

I said to the Fatty, "When the submarine passed through the 'light panel,' I felt something. My whole body was hot, and my blood was flowing faster than before. But I can't be sure if that feeling was caused by my nervousness or if there was really something behind the 'light panel.' After coming here, that feeling is still there. It hasn't disappeared, and it's getting stronger. I can feel that there's something I'm looking for on this island..."

"Maybe the door you're looking for is in this city." Zoe nodded at me. "What impressions do you have of this island and the stone city?"

I shook my head. My memory was empty, and I had nothing.

Inside the stone city, the huge stone buildings were structurally tight, grand in scale, and varied in shape. The large stone walls, thousands of meters long, were built from large stones several meters high. Each large stone weighed at least ten tons, and many strange patterns were carved on the stones. The stone-paved roads were interconnected, and shell fossils were attached to the ground and the stone blocks of the buildings. They looked very old.

We passed a cluster of houses made of staggered stones. The roofs of the houses were covered with a common mixture of soil and plant fibers, which was often used in ancient times for rain and water protection.

Most of the houses had pottery jars, stone slabs, stone racks, and various tools that had long since rotted. Fishing gear was the most common tool. Some of the houses had already collapsed. It looked like no one had lived here for a long time.

If these stone buildings were on land by the sea, I could say with certainty that this was an abandoned ancient fishing village.

The further we went into the city, the more we realized that the stone city was a bit like an ancient castle-style structure. The outermost houses were dilapidated, like a transitional zone on the periphery of the stone city, used to resist military or natural disasters (tsunamis). The further we went in, the larger the scale of the buildings, but they were still the structure of fishing village houses.

It wasn't until we reached the inner city that we really saw the core of the stone city.

The stone city was separated into inner and outer cities by a three-meter-high stone wall. What we had just passed through was the outer city area.

The most conspicuous place in the inner city was a marble giant statue more than ten meters high. The giant had two heads, different in shape, with angry eyes and bared teeth, facing the giant pyramid. Six arms grew out of his back. Four of the hands each held a harpoon, and the other two hands were clenched into fists. The giant only had two legs, but they were thick and powerful, supporting the upper body like two thick stone piers.

All the buildings in the entire inner city were built around the giant statue. Although the luxurious houses were made of stone, they were different from the rough and shoddy houses in the outer perimeter. It could be seen from the selection of stones that a lot of effort had been put into it.

The Fatty glanced at the stone house next to him and exclaimed, "Holy crap!"

We followed the Fatty's gaze and were also taken aback. Inside the stone house lay a petrified human corpse that had long been dried. The clothes on the corpse had long since rotted, leaving only a few scattered pieces of linen scraps.

We looked at the surrounding stone houses and found that there were also human corpses in the other houses, including adult skeletons and children's skeletons.

They seemed to have died suddenly overnight. Judging from the posture of the corpses, these people were not frightened or stimulated before they died. They died peacefully.

We bypassed the giant statue and came to the front of the stone hall in the center of the inner city. Ten large stone pillars, more than one meter thick and more than five meters high, stood around the outer gate of the stone hall, revealing majesty from the inside out. The stone hall should be the power center of the entire stone city.

The Fatty waved his hand, and we followed him into the stone hall.

After passing through the dim front corridor, we entered the interior of the stone hall. The interior of the stone hall rarely used wooden structures for decoration. Most of the dark reddish-brown wood had rotted and was soft and crumbling. A puff of air would turn it into flying ash.

A long time ago, the main hall seemed to have been decorated with brocade and jade, but because of the long time, the brocade had long since rotted away, leaving only the jade inlaid on the walls and stone pillars, glowing and radiant. Each piece of jade was exquisite and could be called priceless.

The Fatty and Jennifer glanced at each other with their sneaky eyes. It was estimated that they had thought of the same thing. They each took out a knife and sneaked to pry off the precious stones inlaid in the wall.

Approaching the wall, the Fatty suddenly noticed traces of oil paint on the wall. He quickly called Zoe over.

After years of erosion, most of the murals had lost their color and turned into gray, mottled fragments. The content of the murals could only be judged through scattered fragments and general outlines.

Zoe and Li De were attracted by these ancient murals and could not extricate themselves for a long time.

Zoe and Li De roughly studied the content of the murals. The murals recorded the life stories of the past city lords of the stone city, such as leading the people to build the stone city on a large scale, leading brave fighters to defeat sea monsters, punishing slaves, and some scenes similar to erotic pictures. From this, it can be seen that the stone city still maintained the behavior style of primitive tribes, and the sovereign of the stone city enjoyed the privilege of polygamy. Drawing the ** scenes into murals meant that the culture of the stone city advocated fertility.

The protagonists of each fragment of the murals were different, one after another, which meant that the new city lord replaced the old city lord. We couldn't count how many generations of city lords had been replaced in the history of the stone city, but the content reflected in the murals did not change much. It was still building the stone city, fighting sea monsters, punishing slaves, and ** reproduction.

It can be said that the past city lords of the stone city were doing the same things.

Han Yu, who had been silent on the side, suddenly said—

"Have you noticed that the people here do not believe in gods."