However, to Zhou Xin's great surprise, Atlas had just arranged for a probe to investigate the crescent-shaped protrusion at the bottom of the trench, when an anomaly suddenly occurred.

"Brother Captain, there seems to be an earthquake at the bottom of the sea." Atlas reported. In fact, without her report, Zhou Xin, who was still staring at the screen, also discovered an abnormality on the bottom of the sea at this time. Under the light of the probe, the bottom of the sea in the picture visibly vibrates. With the tremors, a large amount of sediment on the seafloor diffused and obscured by these scattered sediments, the otherwise clear picture quickly became blurred.

"Strange." Just as the sediment was just beginning to obscure the image, Atlas suddenly muttered to himself in a tone of surprise.

"What's wrong?" Although this was just the little girl's self-talk, it was still heard by Zhou Xin, and he asked.

"This earthquake - it seems a little strange - "Atlas replied uncertainly, "the tremor seems to have occurred only in a few scattered areas. With the exception of a few probes, the other probes around them didn't notice even the slightest tremor on the ground, which didn't seem like it-" After a few seconds, her tone changed and became affirmative, "No, Brother Captain, it wasn't an earthquake, it was something else. ”

"Other reasons?" Spred said thoughtfully, "Local tremors?" Could it be caused by the activity of some kind of seabed organism? Or maybe it's something like an undersea jet? ”

Just after Atlas dismissed the earthquake's claim, Zhou Xin seemed to think of something. While Spred was making his guess, he called up the topography map of the seabed without saying a word, and then marked the location of the shaking on the map. This matter has just been done, and Zhou Xin saw some clues from the picture. Then, without explaining his thoughts, Zhou Xin immediately gave instructions to Atlas, "Let the detector turn off its own lights and high-power detection equipment." Come on, come on. ”

"Oh? Oh. The little girl was slightly stunned before reacting. Hearing the urgency of Zhou Xin's words, she didn't ask more about the reason, but quickly followed Zhou Xin's order. Soon, the blurred image on the screen disappeared and it was completely pitch black.

"What, what did you find?" Just after Zhou Xin gave the order, Spred asked. However, now Zhou Xin didn't pay attention to his question at all, but kept staring at the big screen. Seeing his movements, everyone had no choice but to focus their confused eyes on the empty big screen.

It didn't take long for the bewildered crowd to see the answers they wanted to know. Without warning, a faint light suddenly lit up in the pitch-black picture. At this time, the mutation on the screen surprised Dart, and he subconsciously blurted out, "Which detector didn't listen to the command and turned on the light without permission." ”

"It's not the probes, it's the attackers who show up." As if worried about alarming the other party, Zhou Xin replied softly, and then he reminded, "Atlas, don't act rashly, wait until they leave." ”

Because of the sediment raised by the vibration just now, Zhou Xin and the others couldn't see the position of the light at all. But that was enough, and then the point of light on the screen stayed in place for a moment, and then began to move upwards. After the first point of light, three or four more points appeared. As the points of light left the sediment-filled area, the crowd saw the silhouette of the attacker they were familiar with. However, just when Zhou Xin thought that more attackers would appear, the brightest place on the bottom of the sea slowly darkened. Soon, darkness returned to the area, and only a few assailants were left as they ascended.

"No, why isn't there enough of them? That's a lot worse than before. Spred asked in a low voice.

As soon as the words fell, Atlas answered his question, "Brother Captain, just now, the probe observed a similar scene in other places where there was just a vibration. At that moment, the camera that was moving with the points of light also saw points of light coming from other places.

"Sure enough." Looking at the footage of the attacker slowly moving away from the detector in the picture, Zhou Xin said as a matter of course. However, apart from him, the others in the command module still felt a little confused.

"What the hell is going on, how do you know that the shaking is related to the attackers? Now that they're gone, you can tell us. Dart asked, but Spred's face took on a thoughtful look.

"Actually, I should have guessed it a long time ago." This time, Zhou Xin did not ignore Dart's question, but replied with a smile. As he spoke, he switched to the topography of the seabed that Atlas had drawn earlier, and then pointed to the obvious crescent moon shape on it and asked, "Didn't you think of anything when you first saw this shape?" ”

"You mean—those undersea ruins you saw before?" Zhou Xin's hint was already quite obvious, and coupled with the images he had seen not long ago, Spred figured out the key in just a few seconds.

"But the size difference between the two is so great, we've never seen a town ruins of this size before." Dart asked, puzzled, "How do you know for sure that crescent moon is related to the attackers and not a natural formation?" ”

"Indeed." Zhou Xin nodded, and then explained in detail, "A shape alone doesn't mean anything. However, considering that those attackers disappeared in the vicinity before. Coupled with such a regular shape, don't you think it's more likely to be artificially built than it is naturally formed? That's why I deduced that this crescent-shaped terrain was most likely where they were hiding. ”

"So, when Atlas mentions the strange tremors in the future, I immediately associate the tremors with the crescent-shaped terrain." Zhou Xin continued, "After marking the locations of several vibrations in the topographic map, I found that they were all located on the edge of the crescent moon. Given the previous speculation, and the fact that the attackers hadn't been seen in a while. I don't need to say more about what is most likely to happen next......"