Although the stairs of the cafeteria are wider than those in the dormitory, they can only walk with five people side by side, so the zombies are diverted so that hundreds of heads will not rush over them, and the pressure on the big iron door will be greatly reduced.

However, Yang Dan and the robots were able to attack the zombies at the same time, because the Guan Gong Dadao in their hands was long enough, and five people in each row in the front and back could stand in two layers.

In this way, the big iron gate has become a meat grinder for zombies.

Although it is crumbling, it can still hold on, and it will not be broken for a while.

This made Yang Shan sigh: Fortunately, the school is not a tofu scum project, thank you alma mater!

According to this, the big iron gate will certainly be broken, but when it is broken, the zombies will be almost killed, and with the 9 robots under his hands, they can completely clean up the finishing work.

Assassinating zombies numbly like this, nearly two hours passed unconsciously.

Seeing that there were still more than a hundred zombies left, a hope of victory came into view, and Yang Dan was certainly tired at this moment, but he was very excited.

"Work hard, the zombies will be killed!" Yang Shan yelled excitedly.

"Boss, be careful!" But at this moment, Silly Qiang suddenly shouted, and at the same time pulled him back a few meters.

"Boom!"

As soon as he was dragged away by Silly Force, the big iron door exploded, and the whole door fell to the top of the stairs, and the robots were forced back two or three meters.

"Roar!"

A particularly sharp roar made Yang Shan couldn't help but take a look.

"Nima, a giant zombie more than 3 meters tall, retreat, fight and retreat!"

Yang Dan's soul was almost scared out, and after giving the order, he ran away and ran towards the stairwell on the third floor.

Of course, the giant zombie wanted to kill Yang Dan's mastermind immediately, but with 8 robots blocking it, even if the iron door was broken, it and the more than 100 ordinary zombies behind it would not be able to rush up for a while.

Hiding behind the iron door of the stairwell on the third floor, Yang Dan immediately drew out the blind man's crossbow and prepared the arrows, at this moment, he was no longer stingy with the waste of tracking the arrows.

He had to kill the giant zombie in this stairwell, or the iron door in front of him would be broken and he would be in a very dangerous situation.

Without Yang Dan's order, Silly Qiang drew out the blind man's bow and crossbow and prepared to shoot, its intelligence is comparable to that of a human, and it will activate the strongest defensive alert in the face of danger, so it does not need the master to order everywhere.

Within a few minutes, the robots retreated to the stairwell on the third floor, swinging their broadswords at the giant zombies.

"Bang bang bang ......!"

The giant zombie's body was unexpectedly hard, and the broadsword couldn't cut into it, and although the impact of the slash would force it back, the robots couldn't hurt it.

"Nos. 1, 2, 3, 4, you are entangled in this big man; 5, 6, 7, 8, you go all out to slash and kill the rest of the ordinary zombies. Seeing that the giant zombie was difficult to deal with, Yang Shan immediately ordered a change of strategy.

After receiving his order, robots 1 to 4 slashed hard, forcing the giant zombies back to the hall on the second floor, while robots 5 to 8 slashed and killed other zombies with all their might, clearing the way for robots 1 to 4.

Although the stairs are narrow, it is difficult for both zombies and robots to exert their strongest strength.

But the robot was commanded by Yang Dan in an orderly manner, and the power exerted by the robot was much greater to deal with the zombies who could only attack savagely.

Under the arrangement of the long snake formation, they can make reasonable use of the limited space and cooperate to exert a powerful attack momentum.

At the same time, Yang Dan also shot, he kept shooting tracking arrows, aiming at those ordinary zombies and killing them.

Silly Qiang's movements are not slow at all, and he also kills vulnerable ordinary zombies.

Yang Shan knew very well that as long as the ordinary zombies were eliminated, under the reasonable siege of 9 robots, the giant zombies would not be afraid.

Although the giant zombie's body is tough, its head must be a fragile weakness, and even if its head is hard, its eyes will never be invulnerable, right? So it's not impossible to kill it.

There are tracking arrows to kill zombies, and the kill rate is greatly improved, and the more than 100 ordinary zombies all fell to the ground in less than ten minutes, and robots 5 to 8 consciously rushed to the hall on the second floor, and joined forces with robots 1 to 4 to deal with giant zombies.

Yang Shan hurriedly opened the iron door and rushed out, rushed to the staircase on the second floor with Silly Qiang, set up a crossbow and aimed at the eyes of the giant zombies and shot.

The robots are also attacking the heads of the giant zombies, and they are well aware of the weaknesses of the giant zombies, because they have their own data analysis system.

In the face of the slashing of the nano Guan Gong big knife, the giant zombie did not dare to carry it with its head, so it was beaten by the robots and retreated.

'Whoosh! ’

Yang Dan and Silly Qiang's tracking arrows shot out one after another, both aimed at the right eye of the giant zombie.

Seeing the tracking arrows coming, the giant zombie tried to dodge, but it couldn't dodge, so it could only carry their shots.

As the arrow approached, it suddenly closed its eyelids and used them to protect its eyeballs.

"Bang bang!"

The arrow failed to penetrate the eyelids of the giant zombie, which was beyond Yang Dan's expectations, he didn't expect the giant zombie to be so strong.

"Bang! Rumble......"

Although the giant zombie blocked the attack of the tracking arrow, it also slowed its movements, and the robots seized the opportunity to slash at its head with several large knives at the same time.

In this way, the giant zombie was split into the air by the combined force and knocked down under the corner of the wall a few meters away.

It wasn't killed outright, and despite a large cut in its head, it held on and quickly got up.

When it got up, it ran to the window of the cafeteria, trying to jump off the building to escape.

"Stop it!" After wasting so much effort, how could Yang Dan let it run away easily?

The robots were not slow, and they rushed forward with a wave of their big knives, struggling to stop the giant zombies from escaping.

Faced with 8 robots second only to it in strength, it was not so easy to escape.

So it was intercepted by the robots in a few moments, and it was surrounded by many robots.

At this time, Yang Dan and Silly Qiang finished loading the bow and crossbow, and they aimed at the scar on the head of the giant zombie together, and shot tracking arrows without hesitation.

"Poof! Poof! ”

There is no suspense, the broken defense is not called defense, and in the face of the shooting of tracking arrows, this time the giant zombie failed to follow.

Two iron arrows sinked into its head, and while it didn't kill it instantly, it was severely wounded.

"Whoosh ......"

"Roar!"

Several waves of tracking arrows were fired in succession, and the giant zombie let out a mournful roar, and finally fell to the ground powerlessly, unable to escape the fate of death.

"Whew...... Finally killed the big guy. Yang Dan let out a long breath and stood up to wipe the cold sweat.

Walking up to the giant zombie corpse and looking at it, he summoned the 'Ali Realm' virtual interface to contact the buyer.

Of course, he doesn't forget to recharge the robots.

After some fighting, they have run out of power, so to be on the safe side, it's better to fully charge them first.

As for cleaning up the zombie corpses, it can be eased up a bit.

…………