Due to the accuracy of the gas tank cannon, the first wave of poisonous gas bombs fired had almost no gaps, but it still exploded after hitting the exterior wall of the building, releasing a large amount of sulfur dioxide gas.

Although these gases soon began to settle down below, some of them still entered the interior of Lingjiang Building through the gap. The inner demon who emitted infrasonic wave attack seemed to be affected, causing the infrasonic wave attack to be paused for dozens of seconds.

But it was this brief attack suspension that made Liu Zheng know that this method was effective.

"Continue to attack, be sure to shoot poison gas into the building!"

Liu Zheng's order reached the artillery squad, and the artillery squad continued to fire poisonous gas bombs at the Lingjiang Building.

After several attempts, two poison gas bombs were finally shot into the gap and exploded inside.

This time, a large amount of sulfur dioxide began to spread inside the building, and the infrasonic attack of the mutant finally stopped.

"Damn... it finally calmed down..." Wang Zhenfei stood up tremblingly with the wall, feeling that his body was still "empty". After all, the infrasonic attack stopped, but it was not a short time to recover.

He took out the walkie-talkie and panted to Qiu Rui and asked, "The Second Battalion First Company...huh... how are you in...huh..."

"No problem, casualties are being counted..." Qiu Rui's muffled voice came, and he seemed to be much better than Wang Zhenfei.

"Tsk, your body is really not as good as before..." Wang Zhenfei couldn't help but sigh in his heart. He is now in his 50s, and he is incomparable to those who are in their prime like Qiu Rui.

Subsequently, Wang Zhenfei also began to count the number of casualties on his side.

After a brief statistics, it was found that there were not many deaths, but there were a lot of people who suffered from negative conditions, and the remaining people were also very weak, mainly due to poor breathing caused by wearing gas masks, which made many people

The negative situation has made it worse.

Some people even couldn't bear it, so they pulled out the gas mask and suffered secondary damage from sulfur dioxide. This is why the dead people were killed. Although the rest of the people were not dead, they were also seriously injured.

.

Just as the two men's troops recovered with all their might, the mutant did not give them this opportunity.

"Note that the mutant is moving towards you!"

With the alert from the airship, the previously retreated mutation began to attack them.

Wang Zhenfei came to the edge of the roof with his gun. He saw mutations appearing from time to time on the surrounding buildings and streets, attacking their defense line, and these mutations have been "transformed" with poison gas protection.

Just as they were dealing with the demon of confusing the heart, the mutants on the outside were already ready for this.

"Damn it, there's no stop!" Wang Zhenfei pulled the tightly wrapped hood on his head in annoyance, feeling that his body was covered with hotness, and his breathing was not smooth, which made him feel angry.

He raised his gun and pulled the trigger at a sneaky mutant on the roof.

But the mutant was extremely alert and hid immediately after hearing the gunshots. Wang Zhenfei's venting shooting did not achieve any results.

"Ao—"

With a long roar, the mutant accelerated the attack.

However, this attack of the mutant looked astonishing, but the battle was very cautious.

Wang Zhenfei and Qiu Rui fought for a long time, but the real results were not much, which made the two of them feel something was wrong.

"Attack without attacking, retreat without retreating, what do you think the mutant is doing?" Wang Zhenfei asked anxiously.

Qiu Rui was silent for a while and said, "I feel that the mutant is delaying time. The other party must be preparing something in the building. I suggest that people immediately draw up people to attack the building."

Wang Zhenfei felt that Qiu Rui's judgment was reasonable, so he reported the situation to the command airship for a decision.

At this time, Liu Zheng and Wu Xin saw the whole battle more clearly, and they had long had this doubt.

Not only that, Wu Xin also speculated that the mutant did this - digging out the escape tunnel.

Although I don’t know why the mutant was ready for authenticity here before, judging by the various reactions of the mutant, this is the most likely thing the other party can do at the moment.

However, Liu Zheng was a little hesitant about whether to order an attack on the building.

Because after several battles, it is very risky to fight against higher-level variants in narrow buildings.

Especially the Lingjiang Building, which was regarded as a nest by the mutant, is impossible to know what the situation inside.

In addition, Wang Zhenfei and Qiu Rui have insufficient troops and have to face the harassment of mutants from the periphery. If the rash attack fails, they may suffer major casualties.

But on the other hand, because the peripheral variations are reflected in the concentration near the building, it is a good opportunity to gather and annihilate them.

Liu Zheng felt that the threat from outside should be removed first and then attacked the building.

"Send the ground troops..." Liu Zheng paused, and then made up his mind to say: "Accelerate the attack and strive to eliminate the mutants outside the building in the shortest time!"

With the issuance of the order, the four infantry battalions, which were originally advancing steadily, suddenly accelerated and compressed towards the variant that was besieging the besieged troops.

Although the mutant sent squads to harass him from time to time, facing the torrent of steel in the four infantry battalions, all of these mutant squads were crushed by.

In less than half an hour, the mutant was compressed into a circular area of ​​only more than 100 meters and was subjected to internal and external attacks.

However, when the battle reaches this point, the subsequent battle will be more troublesome.

Although the mutant is compressed into the active area, the density of troops also increases.

And the trouble is that in this situation, artillery can't be used, because once the shells are mistakenly shot into the besieged troops, the consequences will be very serious.

Therefore, if the base wants to eliminate these variants, it can only rely on infantry buildings to fight them.

However, compared with Lingjiang Building, which has unknown attacks, Liu Zheng is more willing to attack these buildings, at least within controllable range, which is a bit too wasteful of time.

At this moment, Qiu Rui sent another request to attack Lingjiang Building, "At present, the main force has dragged the mutants on the periphery, and we have no worries. It is the time to attack Lingjiang Building!"

Liu Zheng thought about it and felt that if he delayed, there might be variables, so he replied: "Okay, I will send a few more cleaning teams to reinforce you, so you must be careful."

"yes!"

After a while after the call, several armored vehicles broke through the defense line of the peripheral mutant and joined Qiu Rui's troops.

Looking at the twenty reinstalled cleaning teams in front of him, Qiu Rui nodded with satisfaction, and then looked at Lingjiang Building not far away.
Chapter completed!