Hearing Zhou Xin's complaining words, everyone laughed. Pen & Fun & Pavilion www.biquge.info

"Not really." Atlas spoke out amid laughter. He then focused the camera of the detector on an inconspicuous animal on the ground at the edge of the frame.

It was an animal that jumped forward on two legs, and it looked somewhat similar to the kangaroo on Earth, but it was much smaller than the kangaroo, only about a dozen centimeters, and there was no bag on its belly. At the same time, the animal looked very thin, and the color of its coat showed a sickly yellow, and even fell off in many places, revealing large patches of gray-yellow skin, I don't know if it was born like this or was affected by the environment.

When they first saw this shot, many people in the command cabin, including Zhou Xin, showed puzzled looks, they didn't know what Atlas's purpose was in focusing the camera on the small animal. It didn't take long for them to understand, though.

In the center of the screen, the animal first glanced left and right alertly, and then rushed towards the direction of the city at a very fast speed, and Zhou Xin and the others even saw the afterimage behind it. However, its speed did not last long, and it only advanced about a hundred meters before the little creature stopped.

However, it didn't stop because of physical exhaustion, but because it was hit by a beam of light that was slanting upwards in an instant. After being hit by the beam, the critter glided forward for some distance before lying motionless on the ground, seemingly lifeless.

All this happened so suddenly, Zhou Xin and the others didn't even react. After staring at the screen for a while, Zhou Xin finally came back to his senses, and he hurriedly asked, "Where did that beam of light come from just now?" ”

At this time, Atlas had already begun to slow down the scene that had just happened, and Zhou Xin and the others finally saw what had just happened. The moment the creature jumped, a beam of light from below hit its head, and then, the creature that had turned into a corpse fell to the ground in an arc in the air, gliding for some distance before stopping.

"This is the first line of defense on the periphery of the central city, and people found out when they passed by last time." At this time, Atlas spoke, "The sentry cannon buried in the ground seems to be automatic. The coverage is unknown, the length is unknown, and if you judge by Demancha's statement, I'm afraid that the whole city is surrounded by this thing. At the same time as the little girl introduced, two or three beams of light appeared not far away, which seemed to remind Zhou Xin of the existence of the sentry cannon, but he didn't know what animals had suffered.

"No wonder." Dart understood, "It seems that the surrounding open terrain is designed for the sentry cannon, and if it is too complicated, it is easy to have dead ends. However, the Sentinel Cannon that surrounds an entire city, the Ewen Empire is a big deal. ”

Looking at the screen with a frown, Zhou Xin asked, "Can you figure out the warning range of the sentry gun?" Can you fly over them? ”

"I'm afraid it's hard." Atlas shifted the camera's camera to another animal carcass, which was the corpse of an unknown bird. Judging from its state, I'm afraid it should have been shot down by the Sentinel Cannon just now. The little girl continued: "It is definitely impossible to be at a low altitude, I am afraid that I can only try a high altitude." But we don't need such a troublesome solution. ”

"What's your idea?"

"The detector has already captured the radar signal of the sentry gun, and people only need to camouflage the signal of the detector itself, plus the small size of the detector itself. It shouldn't be difficult to get through. Atlas replied.

As Atlas said, the probe then just stayed in place for a few minutes and then began to move slowly. At first, Zhou Xin and the others looked a little nervous as they looked at the moving pictures on the screen. When the probe slowly flew over the location where the small animal had been attacked before, but did not see the familiar beam, everyone couldn't help but breathe a sigh of relief. Even so, Atlas was still very cautious, controlling the probe to keep it moving at a slow pace. It took a long time for the detector to move forward a distance of more than a hundred meters, and at this time the little girl said easily: "Okay, the radar signal has begun to weaken, and the detector should have passed through the warning range of the sentry cannon." ”

However, after saying this, the detector stopped. Spred asked curiously, "Why didn't the probe move on?" ”

"Because people don't know where the second line of defense is." Atlas replied, "The last time people passed by, they only saw the sentry cannon outside, and I don't know what else will happen next, so I stopped and took a look at the situation." ”

"But if the probe doesn't move forward, we don't know what the second line of defense is, we've never seen before." Zhou Xin was a little embarrassed, "There must be no small animals here to help us try." After thinking about it, he said helplessly, "It's better for us to investigate what this second line of defense is." ”

"Hmm." Atlas nodded, and the probe began to move on.

It wasn't known what the second line of defense was, so the probe was still slowly moving forward as it had just done. More than half an hour passed, and the probe was only half as far as the nearest building, but nothing happened. As they got closer and closer to the building, the detector that had not triggered the second line of defense made Zhou Xin and the others more and more nervous.

In the midst of everyone's nervousness, the probe approached the building step by step. However, until the nearest building was only a few dozen meters away, nothing happened. After a while, the probe flew the last few tens of meters and came to the building.

"What about the second line of defense?" After breathing a sigh of relief, Zhou Xin asked in surprise, "I've been worried for so long." ”

"Maybe the detector wasn't triggered because it was too small?" Atlas didn't know why, and she had a blank look on her face.

"Anyway, our probe has successfully entered Central City." Although he was a little concerned in his heart, Dart still remembered the purpose of the probe, and he opened his mouth to remind, "Is it time to start an investigation into Central City?" ”

"Oh, oh." At this time, the little girl reacted, and as her voice sounded, the detector began to move forward, and the investigation of Central City finally officially began.

As for the detailed investigation that followed, Zhou Xin, who was just curious about the two lines of defense mentioned by Demancha, did not pay attention to the whole process, but handed it over to Atlas. Of course, the next day, he asked Demancha about why there was no second line of defense. Demancha was also very surprised that the detector did not trigger the second line of defense, but he actually didn't know much about Central City, so he couldn't answer this question. When Zhou Xin introduced the experience of the probe, he didn't even know what the first line of defense was. However, this time the contact was not without gains, seeing that Zhou Xin and the others actually mixed into that city so quickly, he also handed over all the information related to Central City that he had investigated before. Although most of them are useless, the most valuable of them is a general topographic map of the central city, which provides a lot of convenience for the initial investigation work of the probe.

However, even with this information, the probe's investigation of the entire city over the next few days was still fruitless. It's not that the city's secrets are deeply hidden, but that there are no secrets. After a round of investigation, Atlas did not find any difference between Central City and other cities. All the people in this city live a similar life to other cities every day, and even go to work even farther away from the city than in other cities. While everyone was away during the day, the probe entered the interior of the building to investigate, but again found no underground bases, not even a single basement. After a few days of no success, Atlas was even eager to use the probe's wide-range detection equipment, but in the end he held back. After all, if this is done, then I am afraid that it will not only be the probes who are searching, maybe the whole city will have to go out to find the probes.

While the probe was investigating the city, the two fleets in space were still standing at the same place they had just a few days ago. However, this time Kazlan and Eun were completely quiet, and neither of them took the initiative to attack each other. They just silently looked at each other from a distance of dozens of kilometers, and no one refused to take the lead in retreating. Although many warships on both sides returned to their homeland one after another during this period, it didn't take long for them to return to the battlefield again, and it seemed that they were just going back to replenish their supplies.

"It seems that the two of them really only have military technology." After figuring out the real purpose of the battleship's return, Dart couldn't help but say, "With such a large spaceship, they only went back for two months to replenish, and their logistics are really not very good." ”

"It doesn't matter to us what their logistics are." Zhou Xin continued, "I just want to wait until when this war will end." Now that they've failed, what does it mean that the Ewen people are still here? ”

"Give it up." Dart said helplessly, "From the very beginning of this war, we haven't figured out exactly what direction the Ewen want the battle to go, other than the purpose of the war. Let's see, they won't always face off like this, there will definitely be one side who can't help but take the lead, and then we won't know what they want to do. ”

A few days later, nearly half a month has passed since the probe entered the central city. Nearly the entire city has been searched by the probes, but they still haven't found any clues of value, not even a single passage to the underground. This couldn't help but make Zhou Xin and them a little puzzled.

"Brother Captain, the probe has investigated all the places in this city where there may be underground passages, or even places where they can't exist, but still nothing has been found." On this day, Atlas, who had completed the investigation of the central city, reported to Zhou Xin.

"Strange then?" Zhou Xin said to himself, "What about the base under the central city? Where did it go? It's impossible to disappear, right? ”

"Could it be that the 'second line of defense' mentioned by Demancha before does not exist at all?" That's when Spred thought about what had happened before.

"It's not the same." Zhou Xin shook his head, "I have learned from Demancha before, and the news of the second line of defense he said was obtained from the members of the community living in the Central City, and those members also heard from other people's mouths, so the credibility of this news itself is very questionable. But the news of the underground base is different, it is a serious military news, although it may not be 100% completely believed, but the credibility is also more than 90%. I'd rather believe that there is one than that it would be a piece of false news. He paused for a moment, then continued, "It must be that the probe missed something during the investigation, Atlas, you are double-checking to see if there is anything else in Central City that the probe has not investigated." ”

"Impossible." The little girl shook her head, "The probes have investigated every place, and they have even reconstructed the entire city based on the data sent back by the probes, but they still haven't found anything that looks like the entrance to the passage." Unless—" and then she thought for a moment, "unless the entrance is deliberately hidden, and if it does, then the location of the entrance will not be discovered unless the probe's other detection equipment is carried, but then the probe will be too easily exposed." ”

"That's going to be a bit tricky." Zhou Xin's brows tightened, and then he asked, "Atlas, judging from your investigation in the past few days, if the probes use more detection equipment, what is the probability that they will be discovered?" ”

"More than 90%." It should have been calculated before, and the little girl immediately reported the answer, "The security level in this city is very high, and people can't even maintain long-term contact with the detectors, so they can only take turns contacting some detectors every once in a while, so as not to be discovered by the Ewen people if the signal strength is too large." Even so, the detector's movements are still detected by the other party from time to time, but fortunately, the detector itself has some intelligence to avoid being detected by the Ewen searchers. If you really turn on all kinds of detection equipment, the signal emitted by the detector is probably as obvious as the light of a lighthouse, unless the person on duty that day is mentally retarded will ignore such an obvious signal. Atlas spread his hands as he spoke, "Apparently they aren't. ”

"So, our investigation has reached an impasse?" After listening to the little girl's words, Spred concluded helplessly......