Let's say that Ai Li chased for another three days, and he has chased more than 200 kilometers. Pen × fun × Pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

It's just that when they arrived here, there were fewer and fewer traces left by the other party. Maybe it's because the time is too long, the other party is getting calmer and calmer, so there are fewer traces of pig * feces and horses.

This made it even more difficult for Alley to track.

Originally, he was counting on getting some information from the memories of the ninjas he had absorbed before, and seeing where the two ninjas were going.

But unfortunately, when he searched for that information in his mind, all he found was fragments of information. And as time went on, even the fragments of information became more and more blurred, eventually disappearing completely.

Ai Li was a little puzzled, and while looking for the traces left by the two people, he asked, "System, what's going on?" ”

The system replied, "Because those ninjas have dark source power in their bodies, it is likely that the dark source power has affected the memories they left behind, so you can't get their complete memories." And over time, all the memories they left behind will be erased by the dark source force. ”

"What kind of power is this dark source force? Can it erase people's memories? ”

The system replied, "I don't know much about the source of darkness, but I just speculate based on my experience these days: it's a mysterious power, more powerful than anything known. But it is also a very terrible force, and if you are not careful, it can cause irreparable consequences. If you are trying to harness the power of the Dark Source, I advise you to be careful. ”

Ai Li wondered in his heart, in his cognition, the system is absolutely omniscient.

It can be said that he knows astronomy and geography, 500 years before and 500 years later.

I didn't expect it to say that it didn't know anything about the dark source power today, it seems that this is really a very mysterious power.

Thinking of this, Eri made the system show the situation in his own body.

Through the displayed picture, he could see that the dark source power in his body seemed to be a little larger.

Of course, this was purely his own feeling, and on the surface, this dark source power was almost the same as before. But through the feelings of his body, he could sense that the attraction of the vortex of dark source power was already a little bigger than before. This shows that the dark vortex is a little bigger, and the dark source power inside has a little more.

He tried to mobilize the dark source and began to envelop his legs.

His legs began to disappear after being covered in the power of darkness. From the foot to the knee point, it has completely disappeared.

Sure enough, the dark source power did have a trace more than before.

Before, I could only make my calves invisible at most, but now I can reach a little above my knees.

Retracting the source power of darkness, Ai Li didn't know how to feel in his heart. According to the system, the Dark Source Force is very powerful, the strongest of all known forces. However, the dark source power also has a terrible side, and if you don't pay attention to it, it will cause irreparable consequences.

It seems that I will have to be careful in the future.

Putting away these thoughts in his mind, he continued to search for the traces left by the two ninjas.

But for some reason, this time he searched for more than half an hour, but he couldn't find it again.

"!"

Eri scolded hatefully.

He couldn't wait to grab the two ninjas immediately and tear them apart.

Now that there is no trace of the two of them, how can this make Alley willing? For Ari, the most important thing now is to kill those two ninjas and put everything else aside for the time being. But in this situation, he is unwilling, he is absolutely unwilling!

Just when Ai Li was annoyed and at a loss, not far to his right, a second-level mutant beast suddenly appeared.

This is an eyeless second-level mutant beast, and it actually tries to pounce on Ai Li.

Ai Li was also angry, and his right hand was about to grab the second-level mutant beast directly. He's going to tear this second-level mutant beast alive. At this time, he wanted to tear something.

But before the second-level mutant beast could pounce on him and follow, its body suddenly broke in two.

This scene looked extremely weird, Ai Li obviously didn't do anything, and the body of the second-level mutant beast was broken, split into two halves and fell to the ground.

But the two halves of the body that fell to the ground did not shed blood.

Eri looked closely, and found that the blood in the two halves of the corpse had been completely lost, and all that was left was shriveled flesh.

Seeing this shriveled meat, Ai Li immediately remembered something, there was only one situation that would cause this effect.

"Little Blood!"

Before he could finish speaking, he saw a blood-red filament appear in front of him.

And in this blood-red filament, there is occasionally a little green.

Although at this time, this blood-red filament is still absent, if it is not for someone with extremely good eyesight, it cannot be seen at all. But Alley could see it clearly.

That's right, it's the little blood.

It's just that the little blood at this time looks a little thicker and longer than before.

If the previous small blood was only the thickness of a hair, only a foot long, then the current small blood is as thick as a finger and more than a meter long.

Moreover, the previous small blood blood could only kill first-level mutant beasts, and the corpses left behind were all intact.

The current little blood can kill second-level mutant beasts, and can instantly cut off the corpses of second-level mutant beasts.

Little Blood Blood has been upgraded!

It was easy for Alley to figure out why the little blood blood was able to level up, and why it had disappeared for so many three days before.

It's very simple, when Xiao Xuexue was with him before, he absorbed a large amount of blood from a first-level mutant beast, even if it was a second-level mutant beast that he killed, he also sucked a lot of blood, and finally reached that critical point of upgrading, or growth.

For the next three days, it either fell asleep or found a safe place to hide, and only after it had upgraded did it reappear in front of it.

"Little blood."

Ai Li couldn't help but feel a little excited in his heart.

The little blood blood was so loyal to himself before, and Ai Li naturally didn't want it to die like that.

Now the little blood remnants of this trace of blood, if it can slowly grow stronger, it will definitely be a good thing. Even if it can't regain its original strength, as long as it can regain consciousness and allow itself to communicate with it, that's enough.

Although Ai Li is not 100% sure that this is Xiao Xuexue, with such a guy by his side, Ai Li has saved a lot of trouble. At least, he didn't have to bother dealing with those second-level mutant beasts, just hand them over to the little blood.

And the most important thing is that Xiao Xuexue can track the location of the enemy, so he doesn't have to spend so much effort to find the traces of those two ninjas.

Although the little blood was not yet conscious, it seemed to be its instinct, and it immediately flew towards the north.

Ai Li still trusted Xiao Xuexue very much, and did not hesitate at all, so he followed Xiao Xuexue towards the north.

After about a day of running, they were almost close to the Yellow River.

The closer you get to the Yellow River, the more Level 4 mutant beasts there are.

Before, when I was on both sides of the Yangtze River, there were many fourth-level mutant beasts, but after leaving the Yangtze River, there were fewer and fewer fourth-level mutant beasts, and I didn't encounter a single fourth-level mutant beast in the previous two days.

And now the closer he got to the Yellow River, the more fourth-level mutant beasts he encountered.

This made Eri believe more and more in his own speculation: the fourth-level mutant beasts were all aquatic creatures, or at least close to the water's edge.

It seems that something must have gone wrong in the water to make those mutant beasts stronger and stronger.

In the meantime, Ai Li had already killed two fourth-level mutant beasts.

Through these two battles, he became more and more confident. Maybe the average C-level hunter can't compete with the fourth-level mutant beast, but with many hole cards and the addition of the system, he can do it.

He didn't take off the materials on these fourth-level mutant beasts, firstly, it was a waste of time, and secondly, he came all the way, and the consumption of his body was also very large, and he needed a lot of energy to replenish it. In addition, he now has the dark source power in his body, and the dark source power vortex also needs to absorb some energy. Although this part of the energy is negligible for the time being, it is always necessary to be prepared.

So he absorbed all the fourth-level mutant beasts he had killed.

As for the materials for the fourth-level mutant beast, he didn't think about it that much now, all he was thinking about now was to kill those two ninjas.

These ninjas are simply beasts, wreaking havoc on our Chinese land, killing our Chinese cultivators. That's not all, they even have to eat the internal organs of Chinese cultivators.

These island ninjas are really too perverted.

Such a person is not worthy of being a human being at all, and he is not worthy of living in this world at all.

After another half a day, Ai Li had already come to the edge of the Yellow River.

What is surprising is that the Yellow River at this time is not as surging as the yellow water recorded in those documents, scooping a bowl of Yellow River water, you can scoop out half a bowl of sediment.

At this time, the water of the Yellow River is clear and clear in the shallows, and the deep is turquoise and deep.

The famous Hukou Waterfall is no longer a yellow waterfall, but a white wave.

This can't be called the Yellow River at all, it can be called the Qing River.

If you think about it, you can understand, why was the Yellow River so yellow before?

The main reason is that human beings have destroyed the environment on a large scale, resulting in extreme environmental degradation and soil erosion.

The soil flows down with the Yellow River, so it becomes the Yellow River.

And now, except for the ten safe zones, a large amount of land outside is no longer human, and even if there are zombies, those zombies will not damage the environment. So the ground is almost entirely occupied by greenery, even the desert has completely disappeared, the water and soil have been consolidated, there is no sediment inflow, and the river has completely cleared.

Seeing this, Ai Li once again thought that maybe to some extent, the world without humans would be a better place.

Of course, he meant that there was no human destruction.

If human beings can pay more attention to environmental protection and live in harmony with nature, then it is truly the best world.