The dark shadow Yunxing couldn't see it very clearly, but the general outline of the thing could be distinguished, and he was sure that it was definitely not human.

Judging by the fleeting shadow, it felt more like an enlarged version of a spider. But what's very strange is that between the shadows shaking, Yun Xing seems to see that there seem to be a few tentacles swinging on the body of the spider, judging from the shadow of the monster reflected on the wall, if you want to describe it, I'm afraid it's more appropriate to say that it is a spider with tentacles, but this is too strange, such a body structure is obviously not any creature on Earth that is already known, and this kind of creature Yun Xing can be said to have never seen it.

However, according to Yunxing's guess, if the shadow is indeed a monster, then I am afraid it will be inseparable from the monster that attacked humans before, and if this monster is real now, it means that a new species has appeared in the monster system, which is definitely not good news for humans.

All the mutated creatures that Yunxing encountered before were the kind of monsters that were more than one person tall, with lizard heads, long tails, walking upright and waving their claws, although the size of these monsters was somewhat different, but the appearance was basically the same, it could be said that they were all a species, even such monsters were very difficult to deal with, if there were other mutant monsters, then human beings would probably have a headache.

Since this matter has happened, of course Yun Xing can't sit idly by, he has to figure out what he saw just now, because the specific location where the situation happened is too close to the base, so it is not only about the safety of the military, but even about the safety of the entire base.

So after a little hesitation, Yunxing still made a decisive decision that he must continue to investigate and be sure to find out the truth of the matter.

However, Yun Xing cautiously went forward a distance, but the shadow before did not appear again, as if it disappeared out of thin air, this is a little weird, Yun Xing came to this side from the other side of the passage, because there is only one way, where can the monster run?

"Something is wrong, it seems that something is wrong!" Yunxing stopped his steps and stood there quietly thinking.

When I looked at this side from where I was before, I saw half of the passage, and the other half was hidden in the light, so I couldn't see it clearly. But even if you can't see clearly, with the narrowness of the passage, it is impossible for the monster's big body to be hidden, but now that the monster has indeed disappeared, this situation is really incredible.

Yun Xing released his spiritual power to probe outward, and he didn't find any problems, although his spiritual power can only release a range of a few meters at the moment, but in the underground space below, the diameter of this passage is only a few meters wide, and Yun Xing's spiritual power is enough to cover the entire passage, and there can never be any omissions.

But he has been using his spiritual power to explore both sides of the passage all the way just now, and he has not found any abnormalities along the way, and he has not felt any holes in the ground along the way, if there is, it must be enough to accommodate the giant spider monster to pass through, such a cave, I am afraid that the diameter is more than three meters, and he would have fallen down a long time ago.

Since nothing unusual was detected, where did the spider go? Could it be that it can still go to heaven?

Wait, heaven!

Yun Xing's body trembled suddenly, he had carefully probed both sides and the underground on this road just now, but he just ignored the top of the passage, of course, with his keen sense, the monster must not have stayed above his head when he passed, otherwise he would definitely be discovered, but will there be an opening at the top of this distance leading to another place, so that the monster leaves? He hadn't really paid much attention to the top of his head before.

As soon as this thought came out, Yun Xing's heart jumped violently, and he finally understood what he had done wrong before.

Monsters are not humans, so its trajectory is naturally different from that of people, Yunxing was thinking about the law of human movement before, including those monsters who also walked upright before, and they were also active on the ground, but after the great changes in the world, did the human world only appear this kind of mutant creature like a lizard man? Could it be that other species of creatures are also present? If there really are other species of creatures, then whether everyone cooperates or opposes each other will have a huge impact on the overall situation, and then it will be a big problem.

In fact, since the emergence of more superhuman clouds on the earth, it should be thought that with the change of the stars of the entire solar system, the magnetic field, gravity, radiation energy and many other factors in the entire star system have changed.

But one thing is certain, since humans are capable of mutating, then every creature in the world may have a chance to mutate, but Yun Xing's heart has been resisting this result before.

Once these creatures mutate, which direction they will evolve in is something that Yunxing can't guess, and he can't stop it. At the moment, he can only find a way to stabilize the base first and then make plans. In fact, according to the current situation, how many places in the whole world have changed, and how many kinds of creatures have mutated, I am afraid it is difficult to say now, Yun Xing has no way to figure out these problems, and all he can do at the moment is to find out the situation in the underground world as soon as possible with the team, so that the base can make timely decisions.

Now even if they want to gain the strategic initiative, they can't do it, after all, it's not just his side, it's not just a base, now I'm afraid the whole world is affected by all kinds of terrible creatures, and now it's just a matter of not long after the catastrophe, and after a long time, all kinds of creatures begin to expand and spread rapidly, at that time, it is unknown whether the position of human beings as the controller can be firmly maintained.

Just the monsters that Cong saw before can be seen, their IQ and behavior are getting closer and closer to humans, if they have the upper hand, both human IQ, human behavior, and also have a strong strength that humans do not have, then I am afraid that it will be the moment of great crisis for mankind.

There can only be one person in control of the earth's civilization, and once human beings cannot control their destiny, then there will inevitably be new ones to replace them.

Thinking of this, Yun Xing also broke out in a cold sweat, although he was a little worried about these monsters before, he hadn't thought too much, but now he suddenly thought about it deeply, the appearance of these high-IQ and powerful monsters is not as simple as human beings facing a catastrophe at all, the appearance of these high-IQ species is likely to be a catastrophe for the entire human civilization!

Yun Xing thought as he walked, and just after passing through a passage, he suddenly stopped again, he raised his head, carefully observed the situation on the side and top of the wall, and as far as his eye could see, a strange trace could be clearly seen through the reflection of the lighting tools.