Indeed, if you think about it carefully, if the monsters that have mutated up to four times are hostile to the Hope Base, how can they be as safe as they are now, and according to the data, it has almost reached the maximum range now, which is centered on the entire Hope Base.

If the monster that has reached 4 mutations really exists, or if it is hostile to the entire base, then they are not meeting here safely, but nervously going to the front line to prepare what to do in order to minimize the losses in the battle.

This can't blame them, because the current situation of the whole world tells them how dangerous it is, so even if the monster reaches 4 mutations, if there is really an attack, they will defend it with their lives, and then they will do everything possible to delay the time, so that the people living on the surface have time to transfer.

As for where to go, it was natural that they wanted to excite a shelter at the bottom 5 kilometers deep, simply called the Bird's Nest.

According to their calculations, the monsters that have reached three mutations, their detection range is extremely wide on the surface, but when they detect underground, it is only 1 kilometer at most, although they are not sure what the detection range of the monsters that have reached the four mutations is, but it should not reach 5 kilometers, you must know that from the ground to the ground to detect, the perception consumed and the so-called spiritual power are multiplied.

This plan started 5 years ago, and the original designers of this plan were Yun Qiang and Xue Xia, but it's a pity that their proposal began to be mentioned 6 years ago, but it was not used at the time, and it wasn't until the two of them died in that experiment later, at this time that the people of the base realized that their entire base was too fragile, and the superficial base could only be superficial after all.

Once attacked by monsters, they will have no way to retreat, and the Hope Base originally set up this hive in the depths of the ground, which was originally used as a backup base, once the surface cannot be defended, or even too difficult to hold, they will enter the underground to dodge, and then the entire Hope Base will also enter a closed state on the surface.

Because the monsters at that time were actually only aiming at people, and they would not cause damage to those buildings, because for them, those buildings did not have any energy at all, and the attack was only to obtain the humans in the idiom.

In fact, they had done an experiment before, and this experiment did show that if there were no people in a building, then the monster would not feel any energy, and it would not destroy that thing.

Because for monsters, those are just items at most, and monsters are generally in primary and secondary mutations at that time, and at that time, the establishment of a general base in the deep zone has already been implemented.

And at that time, all their bases, even if some kind of unspoken rule has been formed, those monsters that have mutated three times will not attack them, but this is only those who abide by the rules, but at the same time, there are also some three-character patients who will not abide by the rules, they are not in that deep area, they are killing in the surface area, devouring humans, and finally successfully evolved to the process of three mutations, extremely cruel, it can be said that each of them is burdened with a lot of human lives.

But it's such a monster, but they don't have any way to deal with it, they can't effectively attack the kind of monster that has reached the third mutation, even if they have already started to develop it at that time, the more advanced blood energy has never been able to break through to the hurdle of the three mutations, and it was even once thought that the blood energy weapon has reached the peak of the second mutation, and it is no longer possible to continue research.

Because if you want to continue research, then you have to have a person who has reached the third mutation who is willing to sacrifice himself, record all the data of his body, and finally hand it over to the mad doctor for experiments, so that there is a little possibility of research.

And when it came to researching the blood energy weapon of the secondary mutation, it can only be said to be very lucky, almost the one who sacrificed happened to develop it.

However, the splendid weapon of the three mutations will not be so simple, because the three mutations and the secondary mutations are almost one day and one place is a very grand hurdle.

Otherwise, there wouldn't be so many monsters, all of which have been at the peak of the secondary mutation, but they have not been able to enter the tertiary mutation.

The kind of substance needed for this can only be studied from the monsters that have mutated three times, and even if the three mutations of human beings are willing to sacrifice themselves, they can only record a series of data, and there must be a corresponding three mutated monsters to study.

At that time, before the tragic experiment, although the entire base had been in a very guilty state, and could only retreat under the attack of monsters, but their retreat was not equal to collapse, they were undermanned and captured by monsters, the terrain was unfavorable, and they chose to retreat in order to reduce more unnecessary casualties.

And at that time, although there were monsters with three mutations, but in the same way, there were also people with three mutations, and at that time, the monsters with the second mutation would also be killed, and the number would not be very small, it was precisely because of these materials that Dr. Mad had so many experimental materials for research, but the monsters of the three mutations were no better than the monsters of the second mutation.

Monsters that have reached three mutations will give birth to spiritual wisdom, and have their own wisdom, and this is where it is more difficult, the monsters of the second mutation are fighting separately, but they have reached three mutations, even if they are hostile to each other, but once they feel threatened, they will inevitably be far away, plus now the entire base is in the deep area, and it is in the stage of development.

Everything seems to be developing for the better, once the monsters that have reached the three mutations are slaughtered at this time, even if enough samples are obtained and the blood energy weapon of the three mutations is developed, will it really be too late at that time?

You know, those monsters that have mutated three times won't sit back and wait for you to develop them, and then come and kill them, will you be able to withstand the wrath of those monsters before that? After all, although they hope to have a firm foothold in the entire deep area, this does not mean that they are absolutely powerful, once they go too far, they are likely to be besieged by many monsters, and that place happens to be the place where many three-mutated monsters gather the most, and one carelessness may lead to a failure.

And even if you have enough materials, if you want to drive a weapon that has three mutations, you will inevitably need a lot of energy. However, if a secondary mutant uses a blood energy weapon with three mutations, even if it is stored in the original blood energy weapon, the number of attacks it can perform will not exceed three times.

So for various reasons, the blood energy weapon of the three mutations was finally shelved. Take a hundred plating to read the latest chapter of "The Road to Survival in the Spirit Cage", the first time to read it for free.