After the Alloy Alien Queen appeared, Lin Fei worked with this powerful killing machine to carefully clean up the alien monsters on the thirteenth underground floor.

This process is definitely thrilling, Lin Fei must kill the fourth or fifth generation of aliens in the shortest possible time and without causing a huge noise, if there is no alloy alien queen in this matter, Lin Fei alone will definitely not be able to do this.

I have to say that if this task can be completed, the alloy alien queen is a well-deserved first hero. The four generations of aliens can't make any waves in front of the alloy alien queen at all, and if Lin Fei assists, it will be no problem to deal with three at the same time. However, although the combat power of the fifth-generation aliens is about the same as that of the fourth-generation aliens, the speed is faster, especially the 'whip' on the back of their heads, which can sweep and stab, and is extremely powerful, Lin Fei and the alloy alien queen can only deal with two at the same time. But fortunately, the number of aliens here was not much, and it took a while to finally clear the aliens near the metal door.

The next thing is how to open the iron door, and Lin Fei also has a way to do this.

Using the iron-blooded communicator, Lin Fei contacted his companions in the U-shaped spaceship.

"Let Xiao Kai come down, go to the control room in this building, and think of cutting off the energy supply to the sixteenth underground floor!" Lin Fei said into the communicator.

This is the method that Lin Fei thought of, now the survivors of the engineer clan are sleeping in the life support cabin, they will definitely wake up after cutting off the supply, and then Xiao Kai will try to contact the people inside and ask them to open the metal door.

"No problem, I'll leave this matter to me!" Xiao Kai said in the communicator that this matter can be regarded as his specialty, and he, like Lin Fei, has been familiar with the equipment and technology of the engineer family in the U-shaped spaceship before, and it is not difficult to do this.

So, Lin Fei continued to clearly descend the alien on the thirteenth floor, and after waiting for about an hour, Xiao Kai's voice came from the communicator.

"That's it, cut off the energy supply in ten seconds, and then I'll try to contact the engineers below, but Lin, be careful, in case those engineers have bad intentions, you have to beware of them against you!" Xiao Kai said over there.

"Don't worry, I don't think they're the Creator, and if they don't know how to lift, I won't be polite!" After Lin Fei finished speaking, he turned off the communicator.

The next thing was going to be much smoother, after the energy supply of the sixteenth basement floor was cut off, Xiao Kai quickly got in touch with the awakened engineers. Of course, this process also took a lot of time, after all, it is not easy to gain the trust of these aliens. Among them, Gu Xiaolin helped a lot, she didn't know when she learned some of the languages of the engineer family, so the work of communicating with the other party was basically done by her.

In short, two hours later, the huge iron door in front of Lin Fei was opened from the inside.

Lin Fei was the second time he had seen the Engineer Clan, these tall giants were a little wary of Lin Fei at first, but when they saw the alloy alien queen behind Lin Fei, they all looked surprised. They may never have imagined how these genetically brutal and impermanent aliens could obey the orders of the human in front of them.

Lin Fei naturally didn't care about them, and now he was concerned about how to leave here with this group of survivors.

Because this time it involved 100 survivors of the Engineer clan, and for every one that died, Lin Fei and they would be punished by a reduction in reward points, so Lin Fei planned to take a long-term view.

The thirteenth basement floor was obviously not the place for discussion, and after soliciting the opinions of these engineers, Lin Fei followed them into the metal door. ..., this underground shelter is obviously not comfortable, in Lin Fei's words, it is as dirty as a sewer, and when it comes to the last floor, Lin Fei sees four rows of life support cabins neatly arranged in front of him, which should be the place where these engineers sleep.

Of the 100 survivors of the Engineer Clan, the highest combat power is only 700, and the lowest is only a little more than 100, and it is obviously impossible to rush out by force with their strength.

From the thirteen underground floors upwards, each floor has aliens, and there are extremely many of them. If these people follow them out, once they are discovered, they will be gnawed by those aliens and there will be no bones left. If you can't fight hard, then you can only outwit.

According to the previous almost, Lin Fei asked the people on the U-shaped spaceship to help attract the aliens in this building. It's just that after doing the test once, it was found that it could only attract the aliens on the surface, and the aliens on the ground were not moved at all. On the contrary, because of the previous noise, there were many more aliens on the surface than before.

This path didn't work, so Lin Fei wondered if he could slowly remove the aliens from each layer.

But soon, Lin Fei vetoed the idea. Not to mention that this matter is time-consuming and laborious, let's just say that the danger is too great, and in addition to the alloy alien queen, even Lin Fei himself is powerless, if he is not careful, if even the alloy alien queen is lost, it will be more than worth the loss.

Let the Alien Queen lay eggs and produce more Aliens?

Obviously, no, there are no hosts for alien larvae to parasitize here, and even if there are, then Lin Fei estimates that there must be tens of thousands of hosts to build an alien army that can rush out.

Thinking about it, Lin Fei couldn't come up with any good ideas. The people above are also thinking about it, but obviously, how to break through the aliens of the more than a dozen underground floors and bring 100 survivors out safely is definitely a test of brainpower.

That's it, three days have passed, during which Lin Fei also took the alloy alien queen to try to clean up the previous layer of aliens little by little, but because of an oversight, dozens of fifth-generation aliens were attracted, and Lin Fei finally escaped back. Now it's hard to get out again, because this time the metal door is once again surrounded by aliens, and the number is several times that of the beginning.

So Lin Fei had to accept the fact that he was now trapped here. Li Chunan and the others also thought of a lot of ways, and in the end, they almost dropped an iron-blooded nuclear bomb directly, but in that case, maybe even Lin Fei would be killed.

Time passed little by little, and the survivors of those engineers didn't have much hope, so there were no mood swings, but Lin Fei was very anxious. If this mission is not completed, they will not die, but all the team points earned in this mission will be wasted.

was trapped like this until the last day, and Lin Fei himself was already desperate. Calculating the time, there will be less than ten hours before their mission will end, and when the time is up, they will be teleported back to the demon space, can there be a miracle in these ten hours?

At this moment, Lin Fei had a piece of paper in his hand, and what was drawn on it was the structural sketch of the sixteenth underground floor, which was this sketch, and Lin Fei had been looking at it for a few days.

Lin Fei, who had not yet given up, flipped through the sketch and looked at it over and over again, wanting to find a way to retreat from the predicament, perhaps it was the endless road, Lin Fei suddenly thought of something.

This underground building, in fact, can also be seen as a high-rise building built underground. So how is it different from above-ground buildings?

In above-ground buildings, if you want to go downstairs to the first floor, you can go up the stairs and elevators. If someone wants to ask if there is any other way, then Lin Fei can tell the other party, as long as you open the window and jump down directly, this is indeed the fastest way to reach the bottom of the building. ..., Thinking of this, Lin Fei suddenly had an idea.

Window?

"By the way, why didn't you think of that before?" Suddenly, Lin Fei was smart.

Of course, this is not an above-ground building, and even if there are windows, you can't jump off at once, but if you think of it as a high-rise building, then it is very likely that this situation will occur.

That's a lot of tall buildings, and sometimes, jumping out of the window, you are likely to end up on another floor.

The same is true for underground buildings, with the advanced level of the engineers, they can't build underground buildings in a single household, and there may be similar underground buildings nearby.

Thinking of this, Lin Fei immediately contacted Xiao Kai and asked him to investigate the surrounding situation.

I have to say that sometimes companions are very important, they can help accomplish something that one person simply can't do, such as this one.

In less than twenty minutes, Lin Fei got Xiao Kai's reply.

"Brother Lin, don't say it, the building next door to you has an underground building, and the closest thing to you is thirty meters to the west, of course, you need to break through the wall on the sixteenth floor underground and dig a passage to enter the underground building. We probed, and there aren't many aliens there......"

"That's it!" Lin Fei was also quite excited, and he immediately found the wall under Xiao Kai's guidance. But soon Lin Fei encountered another problem, this wall was very strong, even the alien blood could not melt.

At this time, the Alloy Alien Queen came in handy again. It used the spikes of its tail to assault, and it took an hour to finally dig a hole in that wall with a diameter of about one and a half meters.

The next step was to dig the hole, and the Alloy Alien Queen was still doing the job, anyway, after five hours, they finally found the outer wall of the other underground building, and finally broke it.

After sending a mirror image and a scout crow to explore this underground building, a smile appeared on the corner of Lin Fei's mouth, this may be the place where the former engineer family stored materials, the three floors below the underground have not been invaded by aliens, and the number of aliens above the third floor is far less than the previous one, relying on the alloy alien queen is enough to break through.

The evacuation went smoothly, and none of the 100 survivors of the Engineer clan died, and all of them were transferred to the U-shaped spacecraft through that passage.

After the last survivor got on the spaceship, Lin Fei himself couldn't believe that it would go so smoothly, looking at the time, it was only ten minutes before the end of the mission.