With the first head, there is the second head......

When the first mutant rat found Xia Jian and his party, and suddenly turned around and rushed up to the stairwell, the rat tide that had just poured into the hall suddenly stopped, approaching, and the black and oppressive rat tide was like an overwhelming ant, from the stone pillars, stairwells, cables, wall gaps, from any place that could be climbed, to the second floor......

"I rely on ......"

Seeing this scene, not only Shi Hu and Storm, but even Xia Jian turned red-eyed.

If this trend continues, it can be expected that wherever they flee, these mutant rats will definitely chase them.

And with the skills of these rats, it really makes people wonder if there is a place they can't go.

As for the Black Widow, it is even more unbearable......

After all, it's a woman, and it's good for a woman to like the little fluffy guys, but it also scores what the fluffy little guys are, especially when these fluffy guys become so big and dense, and the black widow is so crazy that she is almost crazy.

Fortunately, the stairwell in the hall is a circular spiral staircase, which starts from the second floor and becomes the kind of narrow stairwell that you see every day......

Seeing that the rat tide was about to overflow to the second floor, Xia Jian had a flash of inspiration in his mind, reached out to Shi Hu's back, pulled Shi Hu's back, and threw the bag containing the cloud burst bomb on his back into the hall, and then he touched his waist with his hand, and in a hurry, he saw him take out two grenades, pull out the safety, and throw one on the stairwell, while the other was thrown straight next to the bag containing the cloud burst bomb.

"Hurry ......"

After doing this series of actions, Xia Jian rushed to the third floor without looking back.

"I'm grass, madman......"

Seeing this scene, Shi Hu and the three of them still didn't understand, their hearts trembled, and they meowed, that is a cloud burst bomb! And it was detonated in the limited space of the hall. Xia Jian did this, obviously wanting to blow up the entire hall.

They didn't want to bury these beasts, without saying a word, in an instant, they burst out of their speed of twelve minutes one by one, followed closely behind Xia Jian, and continued to run up non-stop, no, it was an escape!!

"Boom ......"

There was a loud bang behind him......

The two grenades that Xia Jian dropped exploded, and the violent explosion instantly detonated the cloud burst bomb......

"Boom ......"

This explosion was much more violent than the previous grenade explosion.

The entire building trembled under the terrifying power of the cloudburst bomb, giving people the impression that the entire hall seemed to be blown away by a violent explosion.

The dazzling wave of fire, which represents death, instantly swept through the entire hall of the teaching building.

The space in the hall is not very large in the first place......

In the limited space, under the impact of the aftermath of the terrorist explosion with nowhere to vent, and the burning of molten iron, under the double blow, the mutant rats in the hall were like ants, vulnerable to a blow, and the slender body the size of a dog cub could not withstand the impact of the terrifying air waves, and burst one after another, exploding into a mass of minced meat, and then being swallowed by the ultra-high temperature flames, turning into a mass of charred black.

"Squeak...... Squeaky ......"

For a while, the screams of the rats were dying.

The circular spiral stairwell, in this earth-shattering explosion, could not hold up for a moment, and in the blink of an eye, it fell apart and turned into a pile of masonry fragments.

And the rat tide that was originally like a sea tide surging into the hall also seemed to suddenly hit the iron plate, and the swept fire wave rushed violently, and was instantly swept away, like a fairy scattering flowers, falling one after another, screaming, falling everywhere......

Even Xia Jian and his party, who had already escaped to the fourth floor, also failed to escape.

The sky shook, and the whole space was groaning and shaking in the explosion, making people wonder if the whole building would collapse in the next moment, but in fact, the teaching building did collapse.

It's just a small part of the hall that collapsed......

The terrifying sound waves, in the small space of the stairwell, had nowhere to vent, not only echoed.

This time, everyone completely experienced the feeling of 'deafening'......

………………………………

The aftermath of the explosion lasted for almost two minutes before slowly dissipating.

The stairwell was filled with a thick layer of dust, and the air was filled with a scorching smell of burnt paste......

Xia Jian got up from the ground with a splitting headache, shook his head, and rubbed his ears vigorously, for a moment, he even thought that he was really deaf......

Stone Tiger, Storm, and Black Widow were lying staggered in the stairwell.

Holding his head, he let out a painful moan from time to time, apparently not recovering from the explosion just now.

"Old ...... Top dog...... Boss ......"

Cui Kai's anxious shouts came over the intercom.

However, probably because of the explosion, the signal is not very good, and the sound is a little intermittent.

Xia Jian leaned against the wall, took out the walkie-talkie, and pressed the call button with one hand:

"Roger, receiving, what's wrong?"

"Ha Luha, you guys are fine...... Great......"

After receiving Xia Jian's reply, Cui Kai's excited shout suddenly came from the walkie-talkie, obviously he was very worried about Xia Jian's situation: "Boss, just now I saw an explosion in the hall of the teaching building, and I thought it was ......"

"Hey...... Ahem......"

Xia Jian smiled, not wanting to accidentally inhale a mouthful of dust, and coughed violently.

But no matter what, Cui Kai's concern still made him feel warm in his heart, and when he eased up, he rarely explained: "We didn't have anything to do, I caused the explosion, there were too many rats just now......"

……

By the time Xia Jian finished the call, Shi Hu, Storm and Black Widow had finally barely recovered.

At this time, when the three of them looked at Xia Jian, there was a strange feeling in their eyes, as if they were saying, "Stay away from us, you madman who doesn't want to die......"

Xia Jian shook his head speechlessly......

He naturally knew how crazy his actions were just now.

But do you have a choice?

The explosion not only prevents the rats from catching up, but also wipes away their own scent.

Although this is a little risky, as long as it succeeds, it will definitely kill two birds with one stone, because he believes that once he is recognized by the group of rats, what awaits him is definitely an endless situation, even if he has the attraction of that black pool.

"Let's go, it's not safe here......"

With that, Xia Jian continued to climb up the stairwell......

The three of Shi Hu naturally buried their heads in keeping up - needless to say than Xia Jian, everyone knew that it was not safe here.

…………

The group of four quickly climbed to the seventh floor.

In the process, they continued to drop several grenades, destroying part of the stairwell.

It is the top floor of the teaching building, but the stairwell leading from the seventh floor to the eighth floor is now sealed by an iron door, and behind the iron door, some sundries have been piled up, completely blocking the stairwell.

Seeing this, the four of them glanced at each other and nodded......

Everyone understands that there are likely to be survivors here!

The four of them returned to the hallway......

Since the stairwell can't get through, then don't take the stairwell, with the current strength of Xia Jian's four people, it is difficult to be stumped by a stairwell.

However, at this moment, Cui Kai's voice came from the walkie-talkie again, judging from his trembling voice, he seemed to see something incredible......

"Old ...... Boss, I think, you should look outside...... cafeteria......"

"Woo ......"

But before Cui Kai's words fell, a dull gunshot suddenly came from the direction of the cafeteria......

…………………………………………………………