Even after being reminded by Zhou Xin, after the other party rushed out of the passage vacated by the probe, Atlas still made a final attempt, and she controlled at least thirty probes to chase them in the direction that the other party left. However, due to their natural disadvantage in speed, no probe could keep up with them. They only destroyed a few probes that were close to each other, and then slowly disappeared from the camera.

Looking at the deep sea that was already empty and dark on the screen, everyone looked at each other. Who would have thought that not so long ago, the situation here was quite intense. It was a long time before Spred said with a smile in his eyes, "They—just left?" ”

"It should be—it's leaving." Zhou Xin continued with an uncertain tone.

"What the hell are they doing?" At this time, Dart also reacted, he seemed a little incomprehensible, "Coming out for no reason to make a fuss, and then leaving inexplicably, isn't this playing with us." It was even difficult to hide the anger in his heart in his words.

"Who knows what they think." Zhou Xin looked at the screen and said helplessly, "Maybe they suddenly changed their minds in the middle of the attack." He then said to Atlas, "Now that they're gone, let the probes intensify their exploration of the ruins of that city." If the other party can appear once, it may appear a second time, and it is uncertain what kind of action they will take at that time. ”

"Well, people get it." The little girl nodded, "People will send more probes over to complete the investigation of the ruins as soon as possible." ”

Soon, two days passed, and everything was quite calm. However, this calm only lasted for two days. In the early morning of the third day, Zhou Xin once again heard the familiar sound of an alarm.

"Brother Captain, those attackers have reappeared." On the way to the command cabin, Zhou Xin's voice came from his communicator.

"How's the situation?" Zhou Xin gasped and asked.

"They're coming from the same direction as before." The little girl reported, "Immediately after appearing, she launched an attack on nearby probes. The probes in that direction have been ordered to retreat urgently, and the probes in other directions are gradually withdrawing from the area of the ruins. ”

"Well, well done." Zhou Xin nodded approvingly, and then rushed to the command cabin as fast as he could.

However, what Zhou Xin didn't expect was that just as he stepped into the command cabin, the alarm suddenly disappeared without warning.

"Atlas, why did the alarm disappear, did you turn it off?" Because of the experience of the past, Zhou Xin's first reaction was to confirm with the little girl.

"It's closed." The little girl's tone of reply was a little puzzled, "It's just that the reason for turning off the alarm is because the other party has already retreated." ”

"Retreated?" Zhou Xin looked a little incredulous, "How could they retreat so quickly. ”

"Brother Captain, see for yourself." As he spoke, images from the probe appeared on the screen.

In this picture, Zhou Xin saw several black shadows that were about to disappear at first glance, and between the camera and the black shadows, some fragments of wreckage that were slowly falling towards the bottom of the sea proved to him the existence of the previous attack.

"Brother Captain, the number of individuals involved in the attack this time is not large, and the entire attack process is very short, so the number of detectors we lost is not much, only twenty-seven." While Zhou Xin was observing the big screen, the little girl reported.

"What's the alarm just now, did the attackers appear again?" As soon as the little girl's words fell, Zhou Xin heard Dart's voice behind him.

"Appearing is appearing, but they're gone." Zhou Xin replied.

"Gone, how can it be so fast." Dart, like Zhou Xin, was quite surprised.

"How do I know?" Zhou Xin shrugged helplessly, "Forget it, since they have already left, it is useless to say anything more, let the probe go back and continue to work." ”

However, no one, including Zhou Xin, thought that this was just the beginning. Less than an hour passed, and the other party reappeared. But this attack also did not last long, and after only ten minutes of scrambling, the other party disappeared from the field of view of the probe.

The two successive surprise attacks made Zhou Xin feel a little puzzled, but this was not over. It didn't take long for a third or fourth attack to take place in the same ruins. There were eight attacks during the day, with gaps ranging from half an hour to two hours. The exact location of their appearance is not fixed, but the direction is all in the direction of the deep sea. Although the damage caused by each attack was modest, it was a bit annoying.

"Are they doing this to interfere with our investigation into the ruins?" After experiencing another attack, Zhou Xin subconsciously muttered to himself while thinking.

"From the point of view of now, this is probably the most plausible explanation." Spred answered.

"But what's the use? If it's just harassment, they'll just delay our investigation. And if the frequency is too frequent, the effect of the interference is not so obvious. "But in turn, their actions proved to us the importance of the ruins of that city." ”

"I'm afraid the harassment is just the beginning." Zhou Xin said thoughtfully, "Maybe they will do more actions against us in the future." After thinking about it, he instructed Atlas, "Either way, the investigation of that ruin needs to be intensified. At the same time, be sure to be vigilant enough about their harassment and not let your guard down just because each attack is small. ”

"Got it."

But the facts proved that Zhou Xin thought too much, and the next few days passed, and the other party did not make any special moves except for frequent harassment.

"Brother Captain, the investigation progress of that undersea ruin is now more than half." On this day, Atlas reported to Zhou Xin.

"Did you find anything?" Zhou Xin asked, "Is there any special place in that ruin?" ”

"It's no different from the ruins of other places, except for the remains of buildings, the only ones that can be found are the remains of terrestrial civilizations." The little girl shook her head in confusion, "Still can't figure out why they attacked there......"