The swarming corpse tide had advanced to the edge of the third wall. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 infoThis is already the last line of defense of the Arashi base, and although the artillery in the rear has been concentrated again, it is difficult for the militia camp that has been disrupted to organize an effective defense.

There are also some militia fighters who have not had time to withdraw to the wall, and they are divided and surrounded by many undead, but instead let the gunmen on the wall throw rat weapons, unable to form a dense enough fire network to suppress them.

Cheng Yong, the leader of the militia regiment in charge of commanding the defense, hurriedly went up to the wall in person, holding a soul energy rifle and trying to snipe the high-level undead with the fastest impact in the corpse group. He kept pulling the trigger and shouting hoarsely for the somewhat confused fighters to reassemble the counterattack, even though his voice had already burst, but he didn't care.

This is already the last line of defense for the Arashi base to face the urban area, and once this place is breached, the corpses that swarm like a tide will directly impact the residents of the civilian area. As the number of dead people increases, more undead zombies will be generated. This kind of catastrophe is like a snowball, and once activated, it can no longer be stopped.

Wang Hai, the second-in-command of the base, has already led the officials of the base to organize the people to retreat, but the so-called retreat is only temporarily concentrated in the core area of the innermost circle. But once you enter, it will be the end of complete siege, and there are not enough defensive weapons on the walls of the core area.

At this moment, a strange scream suddenly came from the dark night sky. It seemed to be the sound of a cannonball breaking through the air when it flew, and it was like the sharp howl of a demon.

In the next second, a series of huge explosions sounded less than ten meters away from the wall, and its radius of destruction was no weaker than the most advanced howitzers in the base.

It's just that this explosion did not smell of gunsmoke as it should be, but a large yellow-brown mist quickly spread across the battlefield with the explosion.

"Beware! Smoke can be toxic! ”

Cheng Yong was just stunned for a moment and immediately reacted. Although there are also some anti-biological and chemical equipment in the base, they have never been used, so they have not been prepared in advance during the battle.

Fortunately, the explosion site was still some distance from their wall, and the smoke had not spread for a short time. Cheng Yong immediately made a decision and led the militia stationed on the wall of more than 100 meters to temporarily withdraw.

The cessation of the gunfire caused a moment of silence on the battlefield. Only the constant screaming in the air, and the eerie explosions that came from outside.

The yellow mist had spread to the previous wall, and the entire section of the wall had become blurred, so Cheng Yong had no choice but to let the soldiers continue to retreat, trying to use vehicles and nearby buildings to build a temporary line of defense.

Cheng Yong climbed his own conning tower, which was so high that he could see the battlefield beyond the walls with his binoculars. In fact, he was also a little strange, since those explosions and yellow mist appeared just now, not only was their side forced to retreat, but it seemed that the undead team on that side had also stopped their previous ferocious offensive.

And when he picked up the binoculars and looked at it, his heart still trembled slightly. I saw that the dense crowd of corpses that had gathered in front of the wall was now scattered, and the craters left by the large explosion were like boiling water poured on the snow, leaving mottled gaps in the corpses.

Of course, under their shelling before, they would also instantly fly zombies within a range. But soon, a follow-up horde of corpses will come up to fill the gap. But the gap caused by this mysterious explosive is strangely no other zombie willing to approach.

Near the crater, Cheng Yong looked very carefully, and he found that the fragments of these corpses were not only broken, but even decomposing and melting at a speed visible to the naked eye.

He immediately realized that this might be the effect of the thick yellow haze in the air. Because he also found that the zombies in the area covered by the yellow fog were very painful, and they no longer cared about continuing to attack the walls of the base, but instinctively ran in all directions, wanting to get out of the scope of the yellow fog.

"Is it a chemical shell?"

Cheng Yong thought of the scream in the air just now, and the subsequent explosion, and a possibility came to mind. It's just that who is the force that fired this powerful cannonball? Could it be that the capital or other nearby human bases discovered the crisis on their side and rushed to support their team?

By this time, the shelling with the yellow mist had stopped. But in the rear of the battlefield, a dense burst of gunfire suddenly rang out.

Cheng Yong was happy in his heart, and he would use guns to attack, obviously a human team. But such a powerful firepower is obviously not something that ordinary forces can have. Looking at the direction where the gunshots came from, it couldn't be that the team brought out by Commander Wang came back again, right?

The gunshots were getting closer and closer, and the corpses that had been dispersed by the yellow mist did not resist stubbornly this time, but fled back into the darkness deep in the city in some panic.

In the distance, Cheng Yong also saw the stitching monster of the Green Flame Period, which was the hardest working in the siege before, but it seemed that it had also withstood a previous "chemical shell" attack, and its fat body had been cut in half, and the wound was still festering.

Suddenly, a gust of night wind blew, and the yellow mist shrouded in the battlefield was swept into the distance, and the originally hazy direction of the battlefield became clear again.

"Fire two flares and turn the rest of the searchlights around!"

Cheng Yong commanded in a hoarse voice, he had already heard footsteps getting closer and closer in the distance. It's very neat and heavy, not like it was sent by zombies, Cheng Yong guessed, it is estimated that the mysterious team that rescued them has come.

Sure enough, not long after, an armored infantry vehicle drove out of the shadow of a building, followed by a group of servicemen in camouflage uniforms. There were only a dozen people in the group, but at the edge of the flare's radiation, more figures could be seen standing quietly.

The infantry vehicle stopped two meters in front of the wall, the door opened, and two young men dressed in officer clothes got out of the car, strode to the iron gate under the wall, and shouted to the wall:

"How's the people inside? Who is in charge here? ”

"I'm Cheng Yong, the head of the Militia Self-Defense Regiment of the Lanshi Base, where are you from?"

Cheng Yong had already leaned out of the wall, and his soldiers had reoccupied the wall, but since the soldiers below had not pointed their weapons at them, they did not raise their weapons in their hands.

At this time, the deployed searchlight was already on, and Cheng Yong was surprised to find that the two young officers below actually had the rank of colonel.