The transport plane soon landed outside one of the entrances to the underground labyrinth.

This entrance is also very close to Jiangnan City, which is 70 kilometers away.

The underground labyrinth is too big, so we can only give priority to solving the rat infestation near Jiangnan City.

The transport cabin door opened, and everyone got off the plane and walked towards the steel fortress at the entrance.

After entering the underground labyrinth, everyone quickly dispersed in different passages, each went to find the rock-devouring rat to hunt.

Lu Heng did the same, walking quickly towards the depths of the passage.

Behind him, Zhou Hong and others looked at him a few times and watched him disappear into the passage.

"Brother Zhou, I think you're right just now, this guy definitely wants to challenge the fourth-level rock-devouring rat again today."

A boy opened his mouth.

Another boy answered: "He didn't show up for five or six days. He must be smothering his head in cultivating, and I don't know how much his strength has improved."

As soon as his voice fell, someone immediately suggested: "Should we go over and have a look first?"

"What's so good about it?" Zhou Hong glanced at the four people and said: "The strength of the fourth-level rock-devouring rat is so much stronger than the third-level and second-level. How can it be possible to close the gap in strength after a few days of practice?"

"That's right." Several boys nodded slowly.

Seeing this, Zhou Hong reminded again: "The most important thing now is to do the things that Senior Zeng gave us."

After he finished speaking, he shook his head and ordered, "Go, set out with me."

Immediately afterwards, their group walked towards the unknown area in the eastern part of the N3 area.

They didn't come here to hunt the Rock Rat, but to find the entrance to the Rat King's lair.

Since their last experience, they now know how to find the entrance to the lair, by first finding a cave full of poisonous gas.

Such caves are usually at the end of a certain passage, so what they have to do is to explore the unknown area, go to the end of each passage in the unknown area, and see if there is poison at the end.

When you find such a poisonous gas cave, write down the location, and then go back and tell Zeng Yizhou, let Zeng Yizhou come over to confirm whether there is a tunnel under the cave connecting with the Rat King's lair.

That is to say, they are here today to carry out a reconnaissance mission.

Soon, Zhou Hong and his group also disappeared into the depths of the tunnel.

Meanwhile, on the other side.

When Zhou Hong and others headed for the N3 area, Lu Heng had successfully found a fourth-level rock-devouring rat.

The reason why they were found so quickly was mainly because the fourth-level rock-devouring rats had hardly suffered mass killings and could be seen everywhere.

'Just take you to practice! ’

With this thought in his heart, Lu Heng quickly rushed towards the Rock-Eater Rat and made a heavy voice.

Hearing this sound, the fourth-level rock-devouring rat in front stood up and sniffed left and right to check the surrounding situation.

Suddenly, it turned sharply and aimed at Lu Heng.

at this time…

Clang—

Lu Heng slashed out and slashed at the head of the Rock-Eater.

And only then did the fourth-level rock-devouring rat know that Lu Heng wanted to attack it.

In its simple thinking, I thought that a weakling like Lu Heng would not be able to take action against it, but I didn't expect...

bang—

The fifth-level sword in Lu Heng's hand slashed **** the skull of the fourth-level rock-devouring rat, and there was a muffled sound mixed with broken bones on the spot.

Immediately afterwards, Lu Heng quickly pulled up the knife, raised his hand and chopped again.

After slashing three or four times in a row like this, the fourth-level rock-devouring rat was completely silent.

'So strong? ! ’

Lu Heng was surprised.

He thought that he would win by fighting the fourth-level Rock-Eater like last time, but he chopped the Rock-Eater to death with one slash.

It's just a quick cut.

‘In this way, I do have a level four strength now, but… it’s barely a level four. ’

Lu Heng quickly calmed down and analyzed the battle.

The reason why he killed this fourth-level rock-devouring rat in a single face-to-face was mainly because the rock-devouring rat underestimated the enemy.

Furthermore, he owns a sharp five-level sword.

So in this case, you don't need to have a crushing advantage over the fourth-level rock-devouring rat, you can easily defeat the opponent.

Therefore, his current strength is actually only barely enough to meet the standard of a fourth-level warrior.

'This is enough! ’

Lu Heng thought to himself, this battle has been enough to prove the performance of this extreme-enhanced energy armor.

I believe that as long as I submit the video of myself beheading this fourth-level rock-devouring rat, this set of Qi energy armor will be able to obtain the preliminary approval of the superior leaders.

At least it can be proved to them that this set of Qi energy armor has practical significance to a certain extent.

Once they accept this, they will not rush to cut off the research funding for this project, and will give Tian Zheng and others more time to improve.

'The first step has been declared a success, the next step is to adjust the parameters and improve some details, so that people who don't understand technology and don't understand adjustment can wear this set of energy armor. ’

Lu Heng thought to himself that he would tell Tian Zheng and others about the results of this test when he went back in the evening. I believe they would cheer up immediately.

'Go to kill the fourth-level rock-devouring rat and collect some more data. ’

Without further thinking, Lu Heng quickly left the place and went to other passages to find the fourth-level rock-devouring rat.

After a while.

Lu Heng successfully found two rock-devouring rats again.

The two rock-devouring rats were devouring the rock and soil on the cave wall together at this time, completely ignoring Lu Heng's arrival.

‘Just right! ’

As soon as Lu Heng saw the two rock-devouring rats, he suddenly had a fighting spirit.

These two rock-devouring rats are perfect training objects.

Lu Heng thought in his heart, he would kill the opponent first and be caught off guard, hacked one of the fourth-level rock-devouring rats to death, and then fought against the other fourth-level rock-devouring rat who had come to his senses. Whether the strength can defeat the fourth-level rock-devouring rat head-on.

Once successful, the video of the fight will be even more convincing.

After all, the rock-devouring rats in the underground labyrinth are often in groups, and few rock-devouring rats are left alone to give people a sneak attack, and many times there are more than a dozen.

So if you can successfully hunt after a dozen or so, it means that this set of Qi energy armor has practical value. The only remaining problem is how to make ordinary warriors wear it and exert its powerful power.

Lu Heng observed it for a while, and then he rushed forward abruptly, aiming at the rock-devouring rat on the left.

Just like before, when he approached the two rock-devouring rats, the other party just stood up to check the situation, not thinking about fighting him.

They didn't realize that something was wrong until he rushed in front of them and started to strike.

Bang bang bang!

Lu Heng slashed three times in a row, and on the spot he chopped off the head of the fourth-level rock-devouring rat on the left beyond recognition, with red and white mixed together.

At this moment, the rock-devouring rat on the right had completely reacted.

Squeaky arched towards him.

Lu Heng hurriedly dodged backwards, dodging the opponent's attack.

After stabilizing his body, he stepped forward, raised his knife and dropped it.

call-

The knife was swept away.

Because the Rock Rat went around to his left.

'It's really not easy to deal with! ’

Lu Heng thought so in his heart, and immediately changed his moves and turned to slash.

In this way, after three rounds of battle between the two sides, Lu Heng seized the opportunity to slash the front half of the rock-devouring rat, and created a long wound on its left forearm on the spot, with deep bones visible. .

After taking such a heavy blow, the Rock-Eater lost half of its combat power in an instant, and was completely at a disadvantage.

There was no suspense in the next battle. After Lu Heng made two more cuts, it ended in its life.

The rock-devouring rat fell to the ground, while Lu Heng stood with his knife raised.

Lu Heng raised his right hand and looked at the fifth-level sword, thinking in his heart that he killed this fourth-level rock-devouring rat so quickly because of such a sharp weapon.

If someone else came over, at least a few more rounds would have to be played.

Of course, that is just prolonging the battle for a while, but in the end, we can still win.

After all, the Rock Rat only fights by instinct, and people know how to learn to be flexible.

'The performance of this Qi energy armor is completely sufficient, enough to cope with the battle with the fourth-level rock-devouring rat. ’

‘As long as they watch the video of the fight I just recorded, they will definitely recognize that. ’

Lu Heng was full of confidence.

If such strong evidence still fails to convince the leaders above, Lu Heng thinks that there is only one possibility, that is, the leaders above have a hole in their brains.

Thinking of this, Lu Heng no longer bothered about this matter. Now he is most concerned about how many points he can earn this trip.

'Killing a Level 4 Rock-Eater will reward you with 75 points, and now I have killed a total of three, which is 225 points. ’

'This is a quarter bottle of energy stock solution! ’

Lu Heng was shocked.

In just a short period of time, I earned a quarter of a bottle of energy stock solution. If I kill here for a day, I can earn three or four bottles of energy stock solution.

That is three or four thousand warrior points.

'The speed of earning points... seems a bit exaggerated! ’

After a simple calculation, Lu Heng found that killing the fourth-level rock-devouring rat was the fastest way to earn points.

Far more efficient than any rat king alive.

Just think about it, it takes only 20,000 points to catch a rat king alive, which is equivalent to killing a fourth-level rock-devouring rat for four or five days.

But the difficulty is very different.

First of all, the fourth-level rock-devouring rat can be seen everywhere, and the rat king is difficult to find.

Also, even if the rat king is found, how to capture it alive is another question.

'Okay, then I will hurry up and kill the fourth-level rock-devouring rat and earn a lot of points. ’

Lu Heng knew in his heart that this situation would not last long.

Because killing the fourth-level rock-devouring rat now rewards so many points is only temporary, once this set of Qi energy armor is successfully mass-produced, so that a large number of second-level warriors have the fourth-level strength, then the point reward for killing the fourth-level rock-devouring rat will be huge. reduce.

For example, if you kill a head and level 2 now, you will get 8 points, a level 3 will get 18 points, and a level 4 will get 75 points.

But when the fourth-level rock-devouring rat is also hunted on a large scale, the reward points cannot be as many as 75, at least a half.

In addition, once the fourth-level rock-devouring rat was hunted on a large scale, it would be difficult to find the fourth-level rock-devouring rat.

It is impossible to have the fourth-level rock-devouring rat everywhere waiting to kill him like it is now.

'I now have a unique advantage, but this advantage will not last long, must hurry! ’

Thinking of this, Lu Heng immediately rushed forward to find a new rock-devouring rat.

Never had he felt so urgent since he started hunting the Rock Rat.

I wish I could be divided into four or five by one person, attacking from all directions to hunt down the fourth-level rock-devouring rats, and kill all the fourth-level rock-devouring rats that could be seen.

Lu Heng quickly disappeared into the depths of the passage.

And not long after he left, a team appeared at the other end of the passage and quickly came to the place where he just stood.

In the team, Zhang Jingyun stood out.

"Hey, these two rock-devouring rats look like they are level four?"

In the team, a boy wondered.

When the others heard the words, they quickly walked to him and surrounded the bodies of the two rock-devouring rats.

After some identification, everyone was convinced that these were indeed two fourth-level rock-devouring rats.

After figuring this out, they were all puzzled.

Who killed these two rock-devouring rats?

You must know that this underground labyrinth has restrictions on strength, and only martial artists of the second level and below are allowed to enter.

In other words, it is impossible for these two fourth-level rock-devouring rats to die at the hands of a fourth-level warrior.

But this way...

"You said, could someone wear the newly developed energy armor and kill these two fourth-level rock-devouring rats with the powerful power of that energy armor?"

A boy looked up and asked the others.

After looking at it, he turned his head to look at Zhang Jingyun and said, "Zhang Jingyun, aren't you helping the scientific research team at the University of Science and Technology to test the Qi armor? Do you think what I just said is possible?"

"I have already withdrawn from that project, and I am not very clear." Zhang Jingyun explained: "I heard that the project does not seem to be very good now and may be cut off, so maybe other similar projects will not work."

His answer is obvious, that is, he doesn't think there is any kind of Qi energy armor that can make the wearer have the strength of a fourth-level warrior.

"Then who killed these two fourth-level rock-devouring rats?" the boy who asked the question wondered.

At this time, another boy said: "I think it should be killed by a fourth-level warrior. I heard that some time ago someone sneaked into the maze in order to capture the rat king alive."

"This time, the task of catching the rat king alive has been released again. UU reading www.uukanshu.com I guess someone else has done this?"

Hearing this, several people nodded slowly, thinking it made sense.

But then, someone reminded: "Don't forget that the rock-devouring mice are timid by nature. If these two fourth-level rock-devouring mice knew that a fourth-level warrior was approaching, they would have run away, how could they have been killed."

"That's right."

People thought what he said was reasonable.

"Since no one can kill these two rock-devouring rats, how did they die? Could it be that other monsters killed them?"

"Impossible, the wounds on their bodies are obviously knife wounds."

"…"

People were puzzled.

Seeing this, Zhang Jingyun said: "Don't guess, pay attention when you hand in the task, and see if anyone has handed in the video of hunting and killing the fourth-level rock-devouring rat, and you won't know."

"right."

Everyone nodded in unison, no longer entangled in this matter.

Afterwards, the group quickly left the place to look for the second- and third-level rock-devouring rats.

On the other side, Lu Heng had already found a new rock-devouring rat and was killing frantically.

In this way, Lu Heng hunted and killed rock-devouring rats everywhere. From the morning to the afternoon, he killed a total of twenty fourth-level rock-devouring rats.

And just as Lu Heng became more and more excited, his life detector suddenly beeped, indicating that a large number of rock-devouring rats appeared in front of him.

'A rat tide again? ’

Lu Heng wondered in his heart, how could there be rock-devouring rats fleeing in groups in this good place.

Could it be that another powerful warrior sneaked into this underground labyrinth to capture the rat king alive, thus scaring the rock-devouring rat to run around?

"Um?"

Suddenly, Lu Heng found that something was wrong with this rat tide.

Because not only the third- and fourth-level rock-devouring rats, but also the rat king ran over.

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