Xu Luo was quite thoughtful.

The bottom of each thick hemp rope is tied with a thick knot, so that people do not need to rely entirely on the strength of their arms to support the body to slide down.

After all, after such a hard and long fight, their physical strength had been exhausted, and they couldn't last long with a momentary exhilaration.

Using the knot as a support, sitting or standing can ensure that you will have the strength to climb back to the rooftop.

"One, two, three......"

Xiao Yu began to count again, and the difference from last time was that this time he did not count silently in his heart, but counted the voice.

It's more like a catharsis for the rest of your life.

Although zombies are tireless, they have also lost the ability of human thinking, and do not know how to distinguish whether they can still walk in front of them.

The half-length parapet is not an obstacle to their ability to move forward for predatory food, but equally, they cannot escape the natural fall of the Earth's gravity.

One by one, zombies fell from the roof of the ten-story experimental building like dumplings, and there was a sound of "crackling" on the ground.

Even if they didn't know the pain, or didn't break their heads, the bones of their bodies were broken, and they couldn't get up again.

Their arrogant staggering will thus stop.

And all everyone has to do is wait for the people to harvest their heads with certainty and obtain the crystal nuclei in their skulls.

More than 500 zombies, that is, more than 500 crystal nuclei, this is really a lot of wealth.

Now, they suddenly felt that there were too few zombies.

"Seven, eight, nine......"

Xiao Yu didn't raise his voice, but how did he feel that the sound of counting was getting louder and louder.

Listening carefully, it turned out to be Wang Youxing who joined the ranks of counting.

So fit.

This is not the pleasure that belongs to him alone, but the pleasure that belongs to all of them, and when they counted to nineteen, the voices of Qin Lexiong and Xia Yujia also joined in.

Xu Luo smiled.

He had never experienced such a crowd shouting and counting in unison, not in any of the hunting squads he had been a part of in the Dark Ages.

A life that is almost breathless by the pressure of survival never seems to be so cathartic about a difficult victory.

Even in the original memory of this body, I had never experienced such an experience.

The sound of counting did not stop, and everyone's eyes looked at Xu Luo, and the expectant gaze in their eyes indicated that they wanted him to join him.

An irrepressible emotion rolled in Xu Luo's heart.

It got hotter and hotter, rushing to his throat, and he couldn't help but open his mouth and join the ranks of counting.

"Thirty-three, thirty-four......"

The numbers are constantly stacking up, which means that there are fewer and fewer zombies on the rooftop.

"Seventy-six, seventy-seven, seventy-eight......"

The sound of counting stopped here, and after a long time, no zombies fell down.

Xu Luo looked at the daughter wall above his head and said softly, "You can go up." ”

"Wait." Xiao Yu said suddenly.

Xu Luo looked at him in surprise, and Xiao Yu immediately said: "There should be another zombie on the rooftop, I counted it just now, seventy-nine." “

Wang Youxing remembered the zombie who was pulled at the end, nodded and said, "Yes, I saw a zombie at the end just now, and there is a distance away from the zombie group." “

"Then wait." Xu Luo said in a deep voice.

The eyes of the five people were focused on the daughter wall, and I don't know how long it took, but there were no zombies on the gray daughter wall.

It's been a long time, and even with the support of the knot, their physical strength is being consumed.

"I'll go up and have a look, and you hold on a little longer." Xu Luo's expression returned to coldness.

Without waiting for everyone to answer, Xu Luo climbed up directly.

Everyone held their breath and stared at Xu Luo, waiting for the final result.

Finally arrived at the daughter wall, Xu Luo did not immediately turn over, but listened for a while, and then slowly poked his head out.

He didn't use his mental power, and the recovery of his mental power was actually very slow, and as his physical strength was almost consumed, his mental power basically stopped. Although he seems to be in the best form, only he knows best, and compared to the rest, it is not much different.

It's just that he knows how to hide better.

A strange smile suddenly appeared on his face.

The moment he leaned out of the daughter's wall, he saw the zombie, but the situation of the zombie made him a little unbearable.

――Zombies also think about life?

The zombie was still some distance away from the parapet, but it stopped, looking up at the sky, with no intention of moving forward.

If the zombie had put its hands behind its back, it would have been more like thinking about life.

Xu Luo lowered his head and said to the others hanging in mid-air, "Come up." ”

Then he turned over on the rooftop.

The thinking zombie suddenly walked, but in the direction of the iron gate on the rooftop. The strange way of acting made Xu Luo a little stunned.

After a while, Xu Luo immediately ran towards the zombie, pulled out the long knife inserted in his back, and came to the back of the zombie in a few big steps.

The zombie suddenly turned its head and smiled strangely at Xu Luo.

There was no white tongue sticking out, no "ho-ho" sound, but the pair of eyes that were not swollen but had lost their pupils suddenly changed.

It seems to be a symbol, a symbol that Xu Luo had seen in his underground laboratory.

His hairs stood on end, and there was only one thought in his mind......

Zombie mutations.

The movements in his hands did not pause in the slightest, but intensified.

Now is not the time to study zombies, but to stifle any change that can cause accidental damage.

There were no other changes, the zombie did not have any exaggerated resistance, and its head was cut off by Xu Luo, but the blood splattered from the neck cavity was a little scarce.

It's also a weird place.

The final form of the zombie will be bloodless, and the entire interior of the body will be dry, but this will take a long time to evolve.

And the blood of this zombie is a bit too fast, after all, the zombie outbreak has not even arrived for a day.

Xiao Yu, Qin Lexiong and others also climbed onto the rooftop.

They only saw Xu Luo hanging his knife and staring at the zombie on the ground that had just been killed by him, motionless.

"What's wrong?"

Hearing Xia Yujia's question, Xu Luo raised his head and forgot about everyone in a daze.

He had already determined that this was not a zombie mutation, and if it was a zombie mutation, it would be impossible to damage it with the strength of his current crossbow.

Before becoming an enhancer, zombies should not mutate.

Seeing everyone's concerned eyes, he didn't know how to explain it for a while, such a strange scene just now, I am afraid that no one will believe it.

He could only barely squeeze out a smile and whispered, "It's nothing, I just feel a little tired." ”

Everyone knew that Xu Luo was the person who contributed the most, and they all felt that their muscles were sore, weak and weak, and Xu Luo was definitely not much better.

It's just been insisting.

Xu Luo's gaze returned to the zombie's head.

He rubbed his eyes suddenly, and looked at them again.

That's right, the eyes just don't have pupils, they don't have the symbols they've seen, and everything is no different from low-level zombies.

The question mark in my heart is getting bigger and bigger.

He was absolutely sure that everything he saw just now was not an illusion, so what was going on with this zombie?

"Boss, what are we going to do next?"

Wang Youxing's question suddenly made him think of a possibility, and immediately said: "While resting, while recovering, while collecting crystal nuclei." ”

As soon as the words fell, he immediately crouched down and slashed at the zombie's head with a knife.

The long knife made of xenometal, which had no difficulty breaking through the hard skull, did not cause any damage to the knife itself.

Take out a plastic bag and rummage through the skull.

His brow furrowed deeply.

There is no crystal nucleus, there is no crystal nucleus, what kind of zombie is this.

Searching through all the zombie records in the Dark Age, there has never been such a situation, and any zombie has a crystal nucleus in its skull.

Could it be that after being reborn, the zombies have a new change?

After thinking about it, I couldn't find any answers, and finally decided to let go of useless thinking, if the zombies really have new changes, they can also be encountered in the future.

Then we'll look for answers.

Under Xu Luo's instructions, everyone began to collect crystal nuclei in an orderly manner.

Xu Luo also joined the ranks.

With the presence of Wang Youxing, this somewhat boring and boring thing has become interesting.

Although I can't do it with my hands, my kung fu is first-class. From time to time, a hilarious sentence will come out, so that everyone does not feel tired.

The speed of collecting crystal nuclei is slower than killing zombies, after all, you need to cut the skulls one by one to find them, and wipe them clean, which is much slower than slashing zombies with a knife.

Wang Youxing came to Xu Luo's side at some point, and said with a hippie smile: "Boss, have you already planned it early on." ”

didn't look up at Wang Youxing, he just said lightly: "Sort of." ”

"Then why do we have to work so hard to slash zombies, it's not easier to lead them directly to the rooftop, and we don't have to be so tired."

Wang Youxing asked strangely.

His question also aroused the interest of Xiao Yu and Qin Lexiong, and they pricked up their ears to listen.

Xu Luo stopped what he was doing, looked up at Wang Youxing's eyes, and said seriously: "The days to come will be very long, and it is inevitable that we will encounter the same crisis, I must understand where the critical point of our combination is, so that I can make a careful plan." ”

He rolled his gaze, glanced at Xiao Yu and Qin Lexiong again, and said in a deep voice: "I hope that the day we arrive at the Xinghai base, all five of us will be alive." ”

Wang Youxing suddenly got up and ran quickly towards a zombie head.

"I knew the boss must have a purpose, and it must be a purpose that is good for us."

Glancing at the three people who continued to collect crystal nuclei, Xu Luo slowly lowered his head, and that grim smile appeared between the corners of his lips.

He only said one purpose, but not the other most important purpose.