After discussing it for a while, the two people still could not find a reasonable explanation for the abnormal situation in this sea area. In the end, they could only put this problem aside and continue exploring.
"Gu Shi, look, is there something in that place ahead?" Thanos said as he pointed to the shadow ahead.
Gu Shi looked up and followed the direction of Thanos' finger. He saw a large shadow suddenly appear in the place where the light could reach in front of him.
The two of them had been walking on this white sand beach for some time. After leaving the territory of the big fish, Anos took out the brightest pearl in his hand. Now the light around them could cover a range of about 100 meters in the distance.
After seeing the shadow, the two stopped cautiously.
Gu Shi narrowed his eyes, looked at the motionless shadow and guessed, "It looks like a stone? Take two more steps forward and see."
"good."
Thanos swam forward a little further, and the shadow in front revealed its true face.
Thanos said in surprise: "This... looks like a wall?"
As more of the shadow was exposed to the light, the two men could clearly see the flat, blue-gray stone wall in front of them.
Gu Shi was a little confused. "Where did the wall come from in a place like this? Could it be that this was once where you mermaids lived?"
Thanos raised the pearl in his hand and swam forward a little further. Seeing that the wall was obviously beyond its usual height, he shook his head.
"Judging from its height, this wall is more like a city wall. We mermaids, unlike you humans, rarely build city walls. Perhaps this part of the building sank from the ground."
Gu Shi thought about it and realized that this possibility was not impossible. There were cities on Blue Star that sank to the bottom of the water due to crustal movements, not to mention the other world where professionals existed.
The two of them walked step by step to the wall. Gu Shi reached out and touched the slightly rough wall, then took out a small knife and scratched it hard, but not even a trace was left.
Seeing Gu Shi's actions, Thanos took the knife from his hand and swung it forward with force. Under the violent impact, the knife broke into two pieces, but the wall still seemed intact.
Gu Shi was surprised. "This wall is so strong. Is it made of some special ore?"
Thanos stretched out his hand and wiped the wall twice, then scraped it with his sharp nails, "If I'm not mistaken, this wall should be made of apatite unique to the seabed.
This ore is extremely hard and highly resistant to magic, making it ideal for use as a material for defensive structures."
As he spoke, Thanos frowned. "As far as I know, this ore is a specialty of our mermaid tribe, and it is rarely sold outside. It is basically impossible for outsiders to obtain the raw materials for such a large wall.
Could it be that this place was really built by mermaids?"
"Since this is a city wall, there must be a city inside. How about we go in and take a look? Maybe we can find some clues." Gu Shi had a hunch that the destination indicated by the pointer should be behind this city wall.
Thanos thought about it. Apart from the city wall, they had not found anything unusual along the way these days. If they wanted to find a way to leave this place, they would probably have to go in and explore.
Thanos quickly made up his mind. He nodded and agreed to Gu Shi's proposal.
Gu Shi looked at the wall again. "Should we go straight up this wall to check it out, or walk along it to both sides?"
Thanos replied, "If this is truly a wall, then forcing your way in from above would likely trigger other defenses.
Although it's probably a long-ago building, we can't bet that all of its defenses are ineffective, so let's first search along the wall for the main door."
Gu Shi quickly recalled the situation when Thanos tried to float directly to the surface of the sea, but was finally blocked by a transparent wall of air.
If you choose to go from the top this time, it is very likely that the mechanism you encounter will not be so gentle.
After making the decision, the two quickly moved towards the wall on the right.
They were lucky and soon found the entrance to the mysterious city, but it was not the gate they had expected, but a huge gap caused by the collapse of the city wall.
Gu Shi and Thanos looked at each other and did not rush to enter through this gap. Instead, they chose to continue forward and look for traces of the gate.
After walking a little further, they saw a tightly closed tall door.
Gu Shi approached the gate and looked at the exquisite patterns and symbols carved on it. He couldn't help but sigh, "How beautiful."
This gate reveals a strong mermaid aesthetic, with exquisite and gorgeous reliefs on the gate, and various beautiful decorations around the gate. Although many plant decorations have become pale, Gu Shi can still glimpse the former splendor of this gate.
Thanos reached out and touched a special symbol on the gate, his tone filled with disbelief, "This really is our city! But why have I never heard of it?"
Gu Shi stretched out his hand and pushed the door. It was obvious that this heavy stone door could be pushed open by his own strength.
Gu Shi turned to look at Thanos and asked, "Thanos, do you know how to open this door?"
Thanos finally recovered from his surprise. He looked up and down at the door, then shook his head and said helplessly, "It seems that we can only enter through the gap just now."
So the two of them returned to the gap again. After crossing the ruins of collapsed rubble, they officially entered the city. The ground under their feet changed from a white sand beach full of corpses to neatly arranged stone bricks.
Looking at the fork in the road that split into three directions, the two people who were completely clueless about the city suddenly became troubled.
Thanos turned to look at Gu Shi, "Which direction should we go?"
Gu Shi took out the pointer from his pocket, took a look at it, and replied, "Go to the middle."
Now that they have arrived at their destination, Gu Shi no longer looks at the pointer secretly, and through spending these days together, he is also willing to trust Thanos.
"In the middle? Let's go then."
Sure enough, Thanos did not raise any objection to Gu Shi's actions. After getting Gu Shi's answer, he turned around and prepared to continue on his way.
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