"It's up to you."

"Understand." Yifrit stopped before the passage, and then folded forward with a pair of hydraulic shears on the top of his arms. He reached out to hold one of the cable-stayed support beams. The hydraulic shears immediately began to increase force. He heard a jingle sound that the steel beam, which was as thick as an adult's thigh, was cut neatly. Then Yifrit grabbed the middle section and threw it back and cleared the hindrance beam that was crossed across the entrance.

After clearing the first beam, the remaining part was the same as before. When you saw the crossbar that was in trouble, you cut it directly on both sides and throw the middle part out. Of course, not all positions are so convenient. The reason why some places still maintain their original appearance is entirely because the support beam supports the stones on it. Once the support beam is taken away, the stones on it will start to fall down. However, this is not a problem for Everrit. No matter how big the stone is, he can directly move it out and throw it away. Even if the ones are particularly large, they will be stuck, they can be cut into small pieces first and then thrown out.

Using this method, we quickly passed this passage and then saw a large space in front. This place should be the passage that extends into the outside, but the middle was blocked by the collapsed earth and rocks, and there was no collapse here, so it looked quite wide.

The eight people who followed us were not only guides, but also had certain understanding of the structure of the underground tunnel. It can even be said that these people are actually experts in this field, but they all rely on experience and have no theory.

One of the guides looked at the situation here and said, "It seems that the landslide below is not as serious as imagined."

"Have you not come to check it out before?" I asked with a little surprise.

The guide said helplessly: "We are not like you. We dare not move the support beams that are crossing the passage, and no one dares to come in at all."

"No!" I looked at the information in the spiritual network in confusion and said, "I saw a robot dog in Longyuan's support supplies! Why didn't I send it in?"

This robot dog is actually the type of robot dog we used when we dealt with those human traitors in the United States last time. This type of robot dog is not entirely military equipment. This thing doesn't look very good, but it is actually an important profit project of our Longyuan. Because the application scope of this type of robot dog is too broad.

Let’s not talk about it on the battlefield. This thing runs faster than motorcycles, and its armor protection is better than light tanks. What’s more important is that it’s flexible dodging and is difficult to be hit. Whether it’s strong attack and defense or corridor battles, it is a good equipment. Many soldiers from the battlefield have special feelings for this type of robot dog. Because on the battlefield, these robot dogs are more reassuring than comrades. In addition, these robot dogs can also be used to clear mines and detonate explosions. For example, when encountering suspected roadside bombs, the robot dog can go up and take a look first. If it really explodes, at least it won’t.

There are casualties, and the robot dog itself is rarely destroyed by car bombs. After all, its protective effect is close to that of light tanks, and its weight is small and small, and its explosive force is not too high, and its survival rate is very high. In addition, when it comes to situations where it is necessary to drill a ventilation duct or sewer, it is also the best choice. The front cross-sectional area of ​​this thing is very small, and it can be used in narrow passages that cannot be accessed by people. Moreover, there are wheels in the claws of this thing, which are much faster than humans in the ventilation duct or sewer, which is very easy to use.

The above is still in the scope of military use, and it still makes great achievements in civil use.

The civil version of this robot dog is mainly divided into three large numbers: enhanced version, standard version, and home version.

The enhanced version is actually a simplified model of the military version. The armor strength is only half of the military version, and it can withstand the damage of close-range shrapnel. As long as it is not directly hit, ordinary bazooka will not have any killing effect on it. In individual weapons, except for anti-equipment weapons and direct hits of individual bazooka, it can basically ignore it, so it is very useful for the police department or company security, banks, armed escort industries. Of course, this model has no weapons. Except for a few military versions, most robot dogs, including more than half of the military versions, are not equipped with weapons. After all, the main function of the robot dog is not used as a firepower point.

In fact, the enhanced version is sufficient for most civilian industries. After all, even if this thing does not have weapons, it is very simple to kill people, because no matter the retractable blade-like claws on its claws or the teeth in the mechanical mouth, they are enough to hurt people. Of course, the teeth of the civilian version are not high-frequency vibration blades, but just ordinary metal spikes. But think about the mouth like a trap clip, all have fangs like small daggers. Being bitten is definitely not a joke. Moreover, the biting force of this thing is enough to bite the car engine out of holes.

The standard version is much weaker than the enhanced version. The enhanced version is a simplified model after reducing the material strength and removing some functions on the basis of the military version. However, in essence, it is still a military type, but the standard version is different. This model is an independent version designed by another, which is very different from the military version. First of all, there are many shapes in this version, which are the type of robot dog at first glance, and some will deliberately make it like a plush toy.

In all aspects, this standard version is weaker than the reinforced version. The shell is just an aluminum alloy, which can withstand ordinary pistol bullets, but some powerful pistols can still penetrate it when they are too close. However, it is more than enough to deal with human bodies. In addition, the internal skeletal system of this model does not use high-strength military special steel, but is divided into many models. The more expensive ones are titanium alloy or carbon fiber, and the cheaper ones are ordinary steel or aluminum alloy. Anyway, it depends on what model you are willing to ask for. The shell of this model is actually not static. If you like it, there are armor shells for sale. Of course, the price is ridiculously expensive, but rich people won't care.

In fact, in addition to materials, the computer performance and battery performance of the standard version are also all kinds of internal equipment that are actually weaker than the military version and the enhanced version. This model is actually mainly used as security guards for ordinary companies. After all, not all companies can afford security robots. In comparison, robot dogs are much cheaper.

Needless to say, the home version is just for ordinary people to buy it home. Of course, it is not really for you toys. You can buy a vegetable for a tow truck when you go out. You can carry it home within 50 kilograms. You can carry a bag part-time when you are crazy in the mall, and you can use it as a stool when you are tired. Beautiful girls can also be used as bodyguards when you go out. Although more than half of the models of the home version are just engineering plastic, as long as the other party does not have a gun, this thing can still easily bring down one or two strong men. Even if the other party has many people, it is still okay to buy you time to escape. Moreover, this thing comes with an internet function. Just call the police and you can contact the police station's network immediately, and it is faster than calling the police.

Of course, the functions of this home version are more than that, and there are actually many derivative functions. For example, the plush version's automatic electric heating function can be used as a hot water bag in winter. It can also be used as an emergency power supply when there is a power outage. It is still possible to temporarily replace the lights or flashlights. It can also be connected to external appliances. Although it cannot be equipped with air conditioners and rice cookers, it is still fine to charge the personal mobile terminal. In addition, people with poor health can only spend money to load medical auxiliary tools and supporting software and can also be used as a home medical center. Although it cannot be cured, it can monitor your physical condition at all times and take care of the elderly, pregnant women and children. If something happens, it can automatically call the prefabricated contact for help. Of course, fire alarms, thieves, disaster rescue, etc. are all optional modules, as long as you can think of small functions, this robot dog has almost all.

Anyway, the function of the robot dog is really convenient and practical. Longyuan's sales of 5 million units per year are not blown out. It is really connected to circle the earth several times.

According to the information I downloaded from the spiritual network, the contact person in our group should have brought twenty military versions of robot dogs when he came. It doesn’t make sense to bring it but it doesn’t work.

After I asked this, someone remembered it. "By the way, it seemed that a robot dog was sent in before, but it disappeared when it ran in. I didn't know where I went. I couldn't receive the signal due to radiation interference outside. I don't know what the situation is now."

This is quite reliable. This is a uranium mine. The radiation intensity under the ground is very high. Ordinary people can lie down directly after being exposed to this environment for less than five minutes. The electromagnetic signal is strongly disturbed here, and even our spiritual network does not receive a signal from a robot dog. In theory, if the robot dog is here, the other party is a military equipment. It should automatically connect to our network, but now there is no signal, which is obviously the result of radiation interference.

Since there are already robot dogs, I am not in a hurry. At the speed of robot dogs, we should discover people or relics that need rescue first than we do. We just need to go over and receive information and deal with it.

The passages forward from here are basically no landslides, and the roads are very smooth, but there are still a lot of stones on the ground, but they are not yet able to block the road. Considering that the space is very large, we simply activated the thruster and grabbed the eight people and flew directly in. Anyway, the passage with a width of six lanes is eight meters high, so there is no pressure to fly.

I have to say that the passage is really deep. We flew along the passage for seven or eight kilometers before we stopped. There were many collapsed areas along the way, but most of them were only half collapsed, and the gap left was still very large. We were too lazy to slow down and flew over directly. However, this place was not possible, because the first completely collapsed passage finally appeared here, and I really couldn't get through it without cleaning it.

In fact, it is not that it has completely collapsed. At least there are some small gaps. Looking at the traces on it, you can clearly see that the twenty robot dogs have passed through here, because the ground is full of plum blossom-shaped footprints, and there are steel bars that are bitten by the robot dog's teeth near one of the holes. It should be an obstacle cleared when the robot dog moves forward.

We didn't change the place, so we dug the hole wide at the place where the robot dog crawled over, and quickly opened the narrowest place. After passing this small hole, the remaining half was buried, but a large dome just fell down and stretched out a slope. There was a triangular passage below, which was very large. At least according to the size of Forret, it was generally calculated that riding a motorcycle should be able to pass through, which is naturally not a problem for us.

After drilling from here, there was another passage. This time we flew two kilometers and saw the third blocked passage, but it was not completely blocked here. There were several large holes on the ground, which obviously could be seen that they were just dug out by the robot dog. These robot dogs have no worse skills than real dogs, or they should be said to be stronger. At least the real dogs will definitely not be able to dig holes on the cement board.

There is a lot of cement and rigid concrete on the ground in this place, which is obviously the top of the cave that collapsed from above, but now there is an obvious passage in it. You can tell at a glance that it was cleaned by the robot dog. However, this passage is really not big, and we need to expand it in the past.

This time we did not wait to completely dig the passage, but dig it until we could go over, so we first drilled it. However, YiFreit was left here to continue digging. His size was too large, so the passage behind would definitely be more difficult to walk. If we waited for him, we would delay our savings.

After leaving Ephrit, we took the remaining eight guides to drill through the narrow passage that had just been dug, and then we found that the landslide was less than ten meters away from the landslide point. Moreover, the results of my electromagnetic induction scanning showed that the landslide was more than fifty meters thick. It took a very long time to dig it.

"Look, there must be other passages here." I started to let everyone spread apart and find the entrance and exit without saying a word, because there was no passage on the landslide in front of the more than 50 meters, which means that the robot dog has not penetrated, and there is no sign of the robot dog here, which means that the robot dog must have found another path.

Sure enough, after I said that one of the guides immediately said, "Don't look for it anymore. I know there is a maintenance passage here outside the main passage. Those robot dogs should have passed by there."

"lead the way."

Following the guide, we found a small door at the edge of the collapsed passage. The door has been very deformed. But at least it can still penetrate. The passage behind is halfway through the tower, but the triangle area below can barely allow us to climb over.

After climbing forward less than fifty meters along this narrow passage, we found a cement board in front of us, but there was a round hole in the cement board. Such a regular circle was obviously cut by a robot dog. The passage behind us was not intact with landslides, but there were many cracks on the wall, and it seemed that the damage here was quite serious.

This maintenance channel is not the same as the main channel. It seems to be moving downwards, and the slope is quite large, but fortunately there is no blockage behind it.

After walking a while, we suddenly stopped because the passage in front was completely submerged under the water.

"Damn, what's going on?"

"It should be when the landslide was collapsed, and then a leakage occurred." said a guide.

Another guide seemed to disagree with the guide's opinion and said: "It shouldn't be. The terrain here is actually very high and there shouldn't be groundwater. This may be a leakage of pipe water, and there seems to be water supply pipes in the maintenance channel."

"No matter what it is, it seems we need to go down and swim," I said and jumped first. Our team was fully armed. Even the guides had simple power armor and helmets with oxygen circulation system. It would be fine to play a diving suit temporarily. After all, the radiation-proof equipment itself must be waterproof, otherwise if there is a leak, what else can we talk about radiation-proofing?

In fact, the underwater passage is not long. After walking for a short period of time, we found a closed iron door, but strangely, we did not find the robot dog. The military version of the robot dog is waterproof and has an underwater thruster. Although it is not fast, it can be moved in the water, but we did not find them here. This is obviously wrong, because I also found their footprints before I went into the water.

The door that blocked the passage was very deformed and was closed. Even if the robot dogs passed, they would not be able to close the door again, so they definitely did not go through the door. The question is where they passed.

We briefly checked and found a passage that allowed the robot dog to pass through. This was a thick pipe, which was originally used to transport fresh air to the ground, and the internal space just happened to allow the robot dog to pass through, but the problem was that we absolutely couldn't get through here.

"It seems we need to find a way to open this door."

"I'll do it." Xiaochun walked over slowly and popped the laser cutter from her wrist and started cutting the door. Instead of opening the hole in the door, she simply cut off the deformed position, then put away the laser and hit the door twice with her shoulder, and then it was opened. However, there was still a passage filled with water behind. Fortunately, she moved less than ten meters and broke away from the underwater environment because of the rise of the terrain.

After returning to the air, my first reaction was not to observe the surrounding environment, but to find that I had vaguely received a signal from the robot dog, but the signal was very unstable. Obviously, we were very close to the robot dog.

"Quick, go forward, I feel the robot dog."

The people who had just crawled out of the water began to run with me before they could take a break. Although the passage here was not wide, there was no landslide and it was still smooth.

After running forward for a while, we found a hole in the previous vent pipe. The footprints on the ground showed that the robot dog should have returned to this passage from here. And I felt that we were getting closer and closer, and I could even receive a complete signal, but I still could not exchange information effectively. However, when I broke through a broken wall blocking the road, the signal became clear in an instant, because I found that the robot dog was in the main passage in front of me, but not twenty, but only eighteen were left. Two of them had fallen on the ground on one side, and the remaining eighteen were formed into a circle to surround a creature I had never seen before.

"My God..." (To be continued...)
Chapter completed!