PS: the weather changes a lot. Taoist friends and book friends, please don't get heatstroke and catch a cold.

"Come down!"

Wei Xiaobei stood in front of the escalator without looking back. He waved the bone knife back with his right hand and cut off the head of a zombie trying to attack himself.

Although Huang Kun hasn't had enough rest, he has stayed here enough. Seeing Wei Xiaobei's voice, he rushed down.

"Master, be careful!"

Another zombie jumped up behind Wei Xiaobei, Shua, a knife, and another zombie fell down.

"Now it's your turn!"

If you want to see a big change in Huang Kun, you need to let him kill enough zombies. Because of his age, it is difficult for him to support a long battle physically. Therefore, Wei Xiaobei cut these zombies short of arms and legs.

"Damn zombies..."

Huang Kun made a pose, but he was almost kicked on his ass by Wei Xiaobei. He didn't dare to talk more. He rushed up with a fire axe.

After those zombies lost their arms and legs, their shapes looked more terrible, but in terms of combat effectiveness, they were about 70% lower than before.

For Huang Kun, such a zombie is the best chance to practice actual combat. Even if the zombie surrounds four or five heads at the same time, Huang Kun can deal with it safely.

The only problem is whether his physical strength can support it.

As time passed, Wei Xiaobei watched carefully. Huang Kun killed a zombie, and the changes on him became obvious.

Finally, after all the zombies on the fourth floor were emptied, Huang Kun gasped and his hands were on his hips, but he didn't paralyze.

In this battle, Huang Kun killed 37 zombies.

Because killing a zombie requires cutting off or destroying its head, although the neck bone of the zombie is weaker than that of a normal person, it is a bone after all. In the end, the fire axe cut a large gap, which is almost scrapped.

In addition, it also needs to dodge the attack of zombies, so it needs to consume a lot of physical strength.

Even if Wei Xiaobei, who has just entered the gray world, may not have the strength to stand up after cutting down 37 zombies in a row.

But Huang Kun still has the spare strength to stand, which is enough to prove that his endurance attribute has been enhanced a lot.

From Wei Xiaobei's point of view, Huang Kun's benefits after killing zombies are mainly used in the three branch attributes of muscle, endurance and health, of which endurance is the most. In addition, the following four branch attributes of agility probably have little increase.

In terms of the whole process, the general law of the promotion of this attribute is to enhance what is needed and what attribute is used more.

Such attribute promotion is not as easy to control as Wei Xiaobei's attribute panel, and the use of evolution points is only 70% or even lower than that of the attribute panel!

Plus the zombies killed before, Huang Kun has killed 52 zombies so far.

The evolution point of each zombie is 8 points, so 52 zombies have 416 evolution points.

Looking at Huang Kun's current appearance, there are probably more than 280 evolutionary points invested in it.

Of course, for young children like Huang Kun, more than 280 evolutionary points are mainly invested in three branch attributes, and the changes are relatively large.

After all, the attribute value of junior middle school students is about five.

If you increase your endurance a little, the effect is obvious.

In fact, Huang Kun himself felt this change. After taking a break, he took the initiative to kill the zombie.

As I said before, zombies are distributed in pyramid shape. There are more than 100 zombies on the third floor, which has a high density. If you don't pay attention, it is likely to attract the zombies on the second floor.

These zombies hunt their prey mainly by hearing, not vision.

To this end, Wei Xiaobei asked Huang Kun to go down to the middle of the escalator. They guarded the up and down escalators respectively, threw them on the ground with ragged clothes hangers, and seduced the zombie to kill.

The advantage of this is that it is not easy to be surrounded when the enemy comes to the door, and Wei Xiaobei can take Huang Kun away at any time.

A clothes hanger was thrown far away and fell on the floor with a crisp sound, just like a gravitational magnet, attracting the zombies around.

If Wei Xiaobei turns on the inductive search ability at this time, he can see that many zombies on the second floor are attracted. Their rotten and dirty heads stare at the ceiling, and their smelly black gums drive their teeth up and down to form a circle.

Look at that, it's like trying to gnaw a hole in the ceiling.

As several clothes hangers were thrown out one by one, a group of more than 50 zombies gathered in front of the escalator, scrambling to squeeze towards the escalator, reaching out to grab and pull each other, and the speed of coming up was very slow.

Huang Kun's fire axe is the second one. The previous one was almost scrapped, let alone used to cut zombies. He couldn't tell if the axe head accidentally fell down and broke his feet.

Fortunately, the fire protection measures of Cuihu department store are well done. Although the fire hose in the fire cabinet is worn, the fire axe remains the same.

Seeing a zombie climbing up several ladders, Huang Kun took a few steps down and chopped it down with an axe.

Faced with the chopping axe, the zombie didn't have the consciousness to dodge. He just reached out and grabbed Huang Kun. As a result, he was hacked from the top of his head by an axe, and the axe got stuck in half. Fortunately, Huang Kun had encountered such a situation before. His left hand grabbed the handrail, his right leg kicked it out, and the axe pulled out. The zombie fell on the escalator disgustingly.

With the terrain advantage of escalators, it is really convenient for Huang Kun to chop up zombies.

The only trouble is that with the zombies being killed at one stroke, the bodies piled up on the escalator have reached a certain height, which makes the height of those zombies far higher than Huang Kun when they climb over the body pile.

Under such circumstances, Huang Kun had to step back and distance himself, so as to eliminate the high advantage of zombies.

But the escalator was a little too small. Huang Kun had to go back to the fourth floor after only chopping and killing more than 20 zombies.

On the contrary, Wei Xiaobei stood where he was, and did not retreat at all. The zombies he had killed were easily kicked back to the third floor by him.

Seeing this scene, Huang Kun was envious, but there was a greater desire in his heart. When he could be as natural and unrestrained as master, it would be good to kill these zombies.

This distraction, if Wei Xiaobei hadn't shot early, Huang Kun would have been knocked down and "kissed" by a zombie rushed to the fourth floor.

Huang Kun, rescued by Wei Xiaobei, had no corresponding fear. Instead, he picked up the falling fire axe and continued to rush to the zombie.

By this time, many zombies had climbed to the fourth floor.

Wei Xiaobei dragged Huang Kun up the escalator to the fifth floor.

This is the advantage of the building. Compared with the flat land, it can attack and retreat. As long as you still have strength, you can retreat layer by layer until the ninth floor. How can you grind these zombies to death.

In fact, the total number of zombies on the third floor is about 100. They killed more than 50 on the 3-4 escalator, and only about 20 can catch up. The rest are still climbing slowly up the escalator.

Seeing Huang Kun's excessive physical exertion, Wei Xiaobei didn't keep his hand, and the bone knife in his hand accelerated the speed of waving.

Before returning to the fifth floor, the zombies who caught up died.

After that, they rushed down and blocked the entrance of 3-4 escalators, killing the zombies who climbed up sporadically.

When all the zombies on the third floor were killed, even Wei Xiaobei felt a little tired.

As for Huang Kun sitting on the ground, he can't get up dead or alive.

Wei Xiaobei killed 60% of more than 100 zombies, leaving nearly 50 zombies, but Huang Kun killed them with one axe and one axe.

Although Huang Kun's attributes will increase every time he cuts a zombie, Huang Kun, who has been exhausted, has no time to recover.

It can be said that this battle, which lasted nearly half an hour, exhausted Huang Kun's physical strength and even his potential.

Looking at Huang Kun who was about to lie on the ground, Wei Xiaobei frowned. There were nearly 600 zombies below. To tell the truth, at this time, Wei Xiaobei should also consider his physical exertion.

A physically exhausted man, no matter how powerful he is, can't carry the siege of those zombies.

Moreover, in this mysterious and strange gray world, if you don't have enough physical strength, you have to sit and wait to die in the face of sudden danger.

"Take a break."

Wei Xiaobei sat down at the entrance of the escalator. Ignoring the stench of zombies around him, he took out mineral water from his backpack, compressed biscuits and handed them to Huang Kun.

Huang Kun shook his hand, indicating that he couldn't eat.

Wei Xiaobei knew that it was not that Huang Kun didn't need energy, but that his hunger was suppressed under the condition of extreme physical exertion.

"Must eat."

Where would Wei Xiaobei talk to him more? He slapped Huang Kun on the head, making him grin and crooked his neck. He had to take food and water and eat and drink slowly.

Wei Xiaobei counted the food and water in his backpack. There were many high-energy nutrition bars, as well as convenient water bags. There were only two compressed biscuits and one bottle of mineral water left.

After drinking a mouthful of water, he took out a high-energy nutrition stick and Wei Xiaobei ate it.

It doesn't matter what you eat, but if you always eat one kind of food, the delicious taste will turn into slag.

As soon as he ate up the nutrition stick in his hand, Wei Xiaobei suddenly stood up and rushed to the landing window with a few arrows, looking out.

Seeing Wei Xiaobei's appearance, Huang Kun knew that if there was something wrong, he would dare to delay time. When he stood up, he stuffed a few mouthfuls of compressed biscuits in his hand, choked and rolled his eyes. He didn't connect the throat until he drank all the mineral water. (to be continued.)