This time, there are a lot of second-level mutants in the zombie group, judging by the sound alone, there are hundreds of them. The team of more than 800 people was divided into two parts, the former was more than 600 people, and the latter was 200 people.

On the ground, more than 600 soldiers, under Shen Yan's order, began to encircle, divide, and annihilate the zombies in a ten-person squad, and the two hundred people in the building were armed with sniper rifles, and the second-level mutants in the dragon's mouth were cleaned up at fixed points.

This kind of zombie that has temporarily broken through external reasons, because it has not been completely broken through by the virus, it is not a matter of course, so they can't be called second-level zombies, they can only be called second-level mutants, although the zombies in this state are not much different from the former after becoming complete second-level zombies, but the process of mutation takes a certain amount of time, although the time is short, it gives Shen Yan a chance.

Three minutes passed in the blink of an eye, and the roar that had just sounded in the zombie group gradually calmed down, in exchange for the low roar of ordinary zombies. The ground forces of more than 600 people automatically dispersed, and it seemed that the formation was a little chaotic, but if you looked at it from a high place, you would find that the more than 60 ten-person squads actually formed a huge encirclement, and the process of shooting zombies was in the process of narrowing this encirclement.

There are about 30,000 zombies left, because of the appearance of second-level mutants in the camp, ordinary zombies seem to have been summoned by some kind of summoning, and they all involuntarily begin to concentrate, which makes the originally loose formation divided into hundreds of compact aggregates. When the ground forces began to attack and clear up, these ordinary zombies didn't care about it, they just gathered and gathered again, which made the killing speed of the soldiers increase sharply!

"Head, there are a few zombies rushing out of the third mouth!" Shen Yan charged all the way, and the yew bow in his hand did not stop in the slightest for more than three minutes, and his hands were like perpetual motion machines. Just as he had just killed a second-level mutant and was about to move on to another group of zombies that was gathering, a reminder suddenly came from the headset, which was a message from the sniper upstairs.

"Everyone, retreat into the building, rely on the building to fight, quick!" Hearing the sniper's reminder, Shen Yan didn't have to think about it at all, and directly gave the order to retreat! The time of more than three minutes is almost the time when the second-level mutant completely transforms into a second-level zombie!

The various squads that had just charged bravely turned around and retreated to the nearby building as soon as Shen Yan's retreat order was issued. The team led by Shen Yan also began to retreat, and during the retreat, he immediately informed Guan Feng, who was fighting inside the platform, of the situation here through the communicator! There is a certain distance from here and there, and if there is no accident, it will not be affected over there!

There were about 30,000 zombies left, and nearly half of them were wiped out by more than 800 soldiers in more than three minutes. But Shen Yan knew that although the power of the firearm was considerable, his own strength still could not be relaxed, otherwise when the zombies broke through the first level and entered the second level as a whole, they would face a catastrophe. In addition, there are also those mutant beasts that have awakened due to human reasons, which are even more difficult to deal with!

When the ground troops retreated, the two hundred snipers in the building were not affected, and they always followed the order given by Shen Yan before, looking for the second-level mutants in the zombie group and shooting them! The soldiers who were close to each other spontaneously formed a sniper gun array, directly killing the nearest group of zombies, and opened a gap in this group of zombies and shot the second-level mutants they were hiding inside.

The battle started as quickly as the retreat began, and in just over twenty seconds after the order was given, all ground forces had already entered the nearest building. The doors were closed, the windows were opened, and the muzzles of the assault rifles stretched out in an instant, and the shots rang out again! The whole process seems to have no pause, and the connection is extremely perfect!

"With such a team, why not survive in these last days! Just give me time, and my anthill will grow incomparably stronger, and then who will be my opponent! Faced with the changes in just a few tens of seconds, Shen Yan couldn't help but feel pride in his heart.

People have ambitions, and when there is no hope of survival and food has become the top priority, eating a full stomach is the greatest ambition; After having a certain strength, wanting to obtain stronger strength is the greatest ambition; Owning weapons, owning men, owning more of these are the greatest ambitions. And with the increasing number of weapons and manpower, the strength has reached a fairly high level, and greater ambitions will arise spontaneously!

"Roar!" A roar came from a group of zombies, and the zombies seemed to have exploded a hive in this roar, and scattered in a blink of an eye. In the process of scattering, their legs and feet, which were still staggering before, suddenly became a lot faster!

"Roar! Roar! Roar ......" another series of roars sounded, followed by more zombie bombing groups, more than 10,000 zombies that were originally gathered together suddenly exploded The situation is absolutely spectacular, as if a boulder was thrown into the lake water, splashing water!

It's a pity that the zombies' counterattack did not make Shen Yan and the soldiers under his command change in the slightest, the gunfire is still the same, and the killing is still the same! Even when the other side is blowing up the group, these gunshots become more regular and more targeted!

At the beginning of the battle on the southern front of Yangyuan Town, the sudden appearance of second-level zombies made the remaining zombies also blow up the group. At that time, all the soldiers were ordinary people, and most of them had just been recruited from among the survivors. The strengthening direction of the second-level zombies is reading power formation, either speed or strength, after they officially become second-level zombies, neither speed nor strength can be compared by ordinary humans! In the face of such an advantage, ordinary people's "mortal eyes" cannot capture the movement trajectory of the speed zombies, and they cannot compete with the terrifying power of the power zombies! caught off guard, this sudden change in the zombie group caused a great crisis to ordinary soldiers.

But the current battlefield is completely different from the one in Yangyuan Town, most of the more than 800 soldiers have become first-level reinforcements, and with the advancement, their physical qualities have also improved. Therefore, although the advantage of those second-level zombies still exists in their eyes, it is not as big as the gap at the beginning, even if those speed-type zombies scatter with the zombies around them, rushing out at a speed of about nine seconds every 100 meters, they can capture their movement trajectory at the first time!

This is the proximity of strength, this is the adaptation to this change, and this is the fundamental reason for the continuation of the entire annihilation battle.

"Smack!" A gunshot rang out, and a speed-type second-level zombie that had just jumped out was hit in the body in an instant, and this shot did not hit the headshot like before, but hit the opponent's body, which may be the sniper's greatest ability. But all this had no effect on the elimination of this second-level zombie, and at the moment when this bullet caused the second-level zombie's body to pause slightly, another gunshot rang out, followed by the sudden explosion of the second-level zombie's head.

Fit, that's the perfect fit!

"Well, after the promotion, the strength still has a great advantage in the face of second-level zombies. When you have time and take all the necessary measures, you can't say that you have to let the soldiers fight the second-level zombies with their bare hands! Seeing that the counterattack launched by the zombie group under the leadership of the second-level zombies did not bring any disadvantage to the soldiers under his command, Shen Yan had already worked out a future training method for them.

The appearance of hundreds of second-level zombies not only represents hundreds of star energy each, but also hundreds of crystals. With these crystallizations, and with the star energy contributed by more than 100,000 zombies this time, Shen Yan was already fantasizing about the space in his hands from five cubic meters to fifty cubic meters!

In a quarter of an hour, in just a quarter of an hour, in the face of the fierce charge of the zombies, more than 800 soldiers not only blocked their counterattack, but even eliminated them one by one, leaving only a few hundred zombies on the entire battlefield. And the whole time is less than two hours!

Just when Shen Yan was constantly harvesting crystals on the battlefield, an armored car suddenly appeared on a highway in the north, and as the armored car drove out, a winding convoy came into view. This convoy could not be seen for a moment after it appeared, and there were more than sixty large and small vehicles, and each of them was garrisoned by soldiers with loaded guns.

"Ahead is the Motor City, where our troops are stationed before we set off!" In the command vehicle behind the head armored car, the guard pointed to the front and said to an officer next to him! And on the shoulders of this colonel, he is impressively wearing a two-bar three-star epaulettes, this is a colonel.

"Well, it's a bit of common sense, choosing such a place as a station, with a wide field of vision, but you can respond in time when something happens!" The major was not very old, he was in his early thirties, and in the face of the words of the guards, he had a proud look on his face, as if he were a general directing the country. But soon, a smile appeared on his face, turned his head to look at a female officer beside him, and said: "Yanqiu, are you tired, if you are tired, I will tell the team to stop and rest for a while before we go on the road, anyway, we have already come to the ground, it doesn't matter if it is a little later!" ”

"No, keep going, it's not too late to rest when you get to the station!" The one who was called Yanqiu by the young colonel was none other than Cheng Yanqiu. Cheng Yanqiu was unmoved by the other party's affection, and responded in a cold voice.

The young colonel seemed to know that this would be the result, and the smile on his face remained unchanged, and said, "Then listen to you, the convoy continues to advance!" But the guards beside him noticed that before the young colonel spoke, there was obviously a flash of anger in his eyes!