The eighth- and seventh-level underground beasts on the periphery were all staring at this sixth-level underground beast that had undergone a mutation, and at the same time, some slight changes had occurred in their aura.

If it was all calm and there was nothing abnormal just now, it would be that the aura began to converge and hide. If the average beast or human deliberately restricts its aura and hides its sense of existence, then it is either ready to start hunting, or it is ready to make other reactions.

They didn't do it right away, though, and looked like they were still waiting for something.

The other high-level underground beasts began to gather their breath, and they were ready to act. The crowd of onlookers from afar also noticed the changes in those high-level beasts.

"But they seem to be waiting for an opportunity. ”

"What are they waiting for, are they waiting for the result of the promotion of that sixth-level beast that is in the process of being promoted?"

"Maybe that's the case, maybe there's something else. ”

The crowd began to speculate about the possibility of this situation.

And just as the humans on the base were staring at the overall situation over there, the high-level underground beasts over there were staring at the alien beasts that were being torn apart, as if they were waiting for the right time to appear.

Qian Xiaoai and the others vaguely felt that there should not be an emergency so soon, but there would definitely be some special circumstances in the future.

However, it took three or four days to wait.

Before the first level 6 underground creature that began to advance was successful, other advanced alien beasts appeared. The levels are different, from level six to level three or four, and so on.

And those high-level underground beasts have finally stopped sitting quietly and watching them for the past few days, because they have begun to move.

For example, there was a fourth-level underground beast in the process of promotion, and suddenly a fifth-level underground beast appeared from the side to attack it. So at this moment, among the seventh- and eighth-level high-level alien beasts watching on the periphery, one of the seventh-level beasts suddenly jumped down, and instantly pounced on the fifth-level underground beast that was about to sneak attack.

Because when the fifth-level alien beast that was about to sneak attack had just made a move, it had attracted the attention of those high-level underground alien beasts. Therefore, at a strength two levels higher, the speed and movement strength of the seventh-level underground beast, and the precise reaction are much stronger than the fifth-level underground beast.

So before the fifth-level sneak attack was successful, he was directly pounced on by the high-level underground beast and pressed under his claws, and then he was bitten to death before he could react.

The fifth-level underground beast that was bitten to death like this, the seventh-level underground beast that bit it to death did not eat it, but threw it there and turned away.

Soon, this level 5 underground beast will be picked up and eaten by other beasts that have no opponents.

So from this point, it can be seen that these high-level underground beasts seem to be doing the guard work to maintain order. Of course, they shouldn't just be here to do this, there may be other things.

While the humans were speculating about the meaning of the actions of these high-level underground creatures, they finally waited for a promotion that was ready to be completed.

The land was devastated and devastated. A thick bloody aura filled the air, and the roar of the beast was still noisy.

And this one who has completed the promotion is not the first sixth-level underground beast, but a fifth-level one. It successfully advanced to the sixth level, and the aura on its body suddenly increased, and its body began to stretch and deform in a clattering sound.

Soon it entered the ranks of the sixth level, but it did not continue to join the ranks of tearing each other apart, but turned around and quickly left the field.

The high-ranking ones did not stop it, and left with it.

However, after the other fifth-level promotion failed, its aura was chaotic and somewhat uncontrollable. Then the energy in his body began to shrink and rise, shrink and rise. This means that it has failed to advance, and the next fate is that it will directly explode with energy, and then die.

The energy explosion doesn't blow their bodies apart, but it does deform them somewhat.

And after this fifth-level promotion failed, the surrounding fifth- and sixth-level underground beasts that had been waiting for the opportunity immediately rushed up. Whoever comes first comes first gets it, and there will inevitably be another chaos.

However, such a situation is allowed, and there will be no high-level underground beasts to stop them.

However, when a level 6 underground creature failed to advance, the surrounding underground creatures did not dare to rush up and grab it. Anyway, even if you rush up, you won't be able to grab it, because there will be a level 7 underground beast that is faster than them.

The surrounding seventh-level underground beasts seemed to be waiting for this moment, but those eighth-level ones did not move. However, the number of eighth-level underground beasts that appeared here was not much, only one-tenth of that of the seventh-level.

And those who succeeded in advancing from level six to level seven did not leave like those who succeeded in advancing from level five to level six. They will flash out of the edge of the battlefield and continue watching.

"Isn't that just the highest way to break through to the seventh level?Doesn't these seventh-level ones have to advance in the same way as those?"

"Maybe it's a special level when you reach level seven, maybe you will change another way to advance. But this method must be the same to tear each other apart, after all, even if they eat a seventh- or eighth-level mutant beast on the ground now, they won't be able to advance. Li Yueshan said beside him.

"Isn't this considered internal consumption, I thought these things had no natural predators, and they would continue to wreak havoc on the surface of the earth. In less than ten years, the entire earth will become a death star. Qian Xiaoai said with some emotion at this time.

Although their base and Haicheng have recently worked together on a medicinal herb that is very effective in killing these underground creatures, even if humans have herbs that are effective against them, it will take decades to eliminate them all. In a few decades, I don't know how many mutant plants, mutant beasts, zombies, etc. will be left in this earth.

After considering the future of the entire earth, the appearance of these things is even more terrifying than the impact of those who eat zombies of the same kind in addition to eating people.

After all, zombies only eat people, they don't eat plants.

If there are no plants, then the chains of life on the earth will only enter a situation of disconnection. If this goes on for a long time, won't the earth really be finished?