A thick black mist will erupt from each killed zombie, and all the healers with abilities stood at the front of the city wall and began to release their abilities against the black mist.

When the white healing power touches the black mist, it can purify the black mist. Originally, if this battle mode starts with a water-type ability user, it is more convenient to bring all those black mists to the ground with water to purify them.

Unfortunately, this time I met a zombie with ice-type abilities. If the water-type ability user makes a move, it will bring greater convenience to the other party.

Su Yunxi's purification ability is undoubtedly the greatest, but 200,000 zombies can not only produce black fog when death explodes. Those zombies that have reached the second or even third level have even appeared that can control the virus.

Otherwise, the living space of human beings is getting narrower and narrower.

When the black mist became more and more dense, Su Yunxi gritted his teeth and had hundreds of clean secondary crystal nuclei in his hands. Even if it is him, it is already all the deposits.

Put those clean secondary crystal cores in separate bags, and then let the person next to them throw them out with the fishing rod. The speed at which the secondary crystal nucleus absorbs the virus is finally equal to the manufacturing speed of the zombie army.

After the blackened crystal nucleus is recovered, Su Yunxi can purify it.

But within half an hour, Su Yunxi caught the attention of the zombie brother over there. No matter how fierce the firepower is, it is impossible to cover all directions, and no matter how fierce the firepower is, it is impossible to completely block those undead creatures.

But within half an hour, the defense had been declared a failure at several points on the city wall. The rapidly tightening team finally started a 'hand-to-hand fight' with the zombies.

The sweat on Su Yunxi's forehead was dripping down, never pushing his limits so desperately. Yu Bai stood aside to protect Su Yunxi, but did not make a move.

As the highest force value on the human side, Yu Bo could only retain his strength to the maximum extent when the lead zombie didn't take action. Unbearable now will only cause greater losses.

The scarlet eyes of the leading zombies became more and more **** in front of the camera. When the blood of human beings began to sprinkle on the ground, the sky was filled with the smell of fresh blood, and the fourth-level zombie screamed and rushed towards the human side.

Yu Bai finally made his move, and lightning flashed between his fists. From the size of a fist to the size of a football, and finally a thunderball the size of a washbasin smashed in the direction of the fourth-level zombies.

The thunderball began to soar in mid-air, and when it was hundreds of meters away, it was already a power grid. The fourth-level zombie suddenly stopped and stood outside the attack range of the power grid. In the power grid, thousands of zombies disappeared in an instant.

The metal that appeared out of nowhere on the ground snaked to the feet of the fourth-level zombie, and the residual current suddenly attacked again along the metal.

"Roar!~" After being stunned for a moment, the hair on his entire body stood up and his suit turned into a tattered fourth-level zombie. The **** eyes roared loudly, and a roar made the group of zombies who were already attacking even more crazy.

A roar, even at that moment, made everyone's movements become stiff.

Before the humans panicked, a huge fireball smashed out from a few dozen meters away from Yu Bo's right hand. The fireball did not turn into a grid halfway like the previous thunderballs. But the high temperature that the extremely condensed fireball carried along the way directly baked and cracked the ground, and the zombies it encountered turned into fireballs and continued to grow the fireball.

Su Yunxi took time to glance at Huangfu Aotian on the right, and she couldn't help curling her lips when she saw the surprised look of the other party after being stunned. As expected of the original male protagonist, he was upgraded with one blow.

The original blow with all his strength allowed Huangfu Aotian to break through some kind of shackles. Instantly upgraded to level three, the energy in the body is not only more, but also fully recovered.

The fireball just now, he can come back ten times!

The attack of the fourth-level zombies was blocked again, and a roar of ten third-level zombies that had been lurking in the zombie group was no longer hidden, and came directly in the direction of Su Yunxi.

Su Yunxi seemed to have not seen it, and continued to purify the virus in front of him according to his own steps. The Wang Lian in the space is also running fast, and the originally calm lotus leaves began to fluctuate a little. The faster and faster purification speed has made the secondary crystal nucleus that would have taken an hour to be purified to be purified in half an hour.

Su Yunxi used Wang Lian to purify the crystal nucleus, and also used his own power to purify the virus in the air. Pieces of white energy gushed out from the city wall around, and it was the healing power user who brought over to work hard.

Yu Bo blocked the attacks of the fourth-level zombies twice, and Huangfu Aotian blocked once. The two men didn't talk or even look at each other, but they cooperated perfectly.

However, in Su Yunxi's view, the main thing is that Yu Bo doesn't want to calculate anything extra.

Blocked one after another, the fourth-level zombies stood a thousand meters away and began to roar again. This time, the temperature between the surrounding heaven and earth dropped even more severely.

Huangfu Aotian didn't know where he got his inspiration or what. He didn't use the fireball to attack, but he set up a wall of fire under the city wall. The raging fire wall not only made the temperature on the side of the city wall rise rapidly, but also caused fatal damage to the zombies with almost no water in their bodies.

In a sense, fire-type abilities are indeed more suitable for dealing with zombies than thunder-type abilities.

It seemed that humans had the upper hand for only half an hour. Su Yunxi, Yubai, and Huangfu Aotian did have the capital to gain the upper hand in the battle. But those who helped to intercept third-level or even second-level zombies were failing steadily.

After half an hour, everyone got off the city wall and began to retreat quickly. After Su Yunxi Yu Bai Huangfu Aotian broke, the thunder bombs that were reserved before were also unceremoniously another round of bombing.

In two hours, the number of zombies killed has exceeded 50,000. Unfortunately, there are still at least 150,000 zombies.

On the human side, the number of casualties has also exceeded triple digits. It seems to be very little in comparison, but humans are non-renewable combat power, and zombies...

As long as those casualties are not wiped out in the end, I am afraid they will turn into zombies and turn their heads to deal with their former teammates.

The speed of human's 'escape' is exceedingly fast. When Su Yunxi, Yubai and Huangfu Aotian also 'escape' quickly, the level 4 zombie, who had been completely infuriated, chased after him without reason.

It will never let go of those tiny bugs!

When everyone rushed to the rear city wall, when 150,000 zombies poured into the city. When a fireball from Huangfu Aotian fell, the long-buried mine exploded.

Enough ammunition to blow up a city, and this time it didn't disappoint. One hundred thousand zombies were immediately wiped out.

"According to continue to retreat."

The rest of the zombie group is not enough to worry about, and the fourth-level zombie can't break through the city's boundaries for some reason. Yu Bai immediately gave an order, and the official commander didn't talk nonsense, he directly led everyone to drive back.

After the three of Su Yunxi broke, Su Yunxi held three secondary crystal nuclei behind his right hand to quickly absorb energy. Biting the tip of his tongue fiercely, his body didn't tremble. Just when he thought he would fall to the ground with just one more move, Yu Bo wrapped one hand around his waist.

He didn't say much, just dragged the person half-embracing and half-cuddling away. Su Yunxi breathed a sigh of relief, put his whole body weight on Yu Bo unceremoniously, grabbed two crystal cores left and right and started to recover quickly.

"This is an opportunity." Huangfu Aotian stood beside him, looking in the direction of the fourth-level zombie. His face did not look like the shrewd businessman of the past, and he licked his lips bloodthirsty.

Yu Bai nodded decisively, but glanced at Su Yunxi a little hesitantly. Su Yunxi rolled her eyes at Yu Bo angrily, and squeezed Yu Bo's waist again.

The corners of Yu Bo's mouth rose slightly, and then he raised his head with the same strong fighting intent in his eyes.

Huangfu Aotian was stunned for a moment, and his eyes became a little deeper. Quickly glanced at the two people who were hugging each other, and quickly rubbed the thumb and index finger of the right hand.

Even in such desperate times, there is always someone by your side.

Gee.

The fourth-level zombies came over quickly, and the other power users and soldiers who also left behind were under the command of the two commanders to avoid the attack range of the fourth-level zombies, and only clean up those low-level zombies.

Yu Bo and Huangfu Aotian rushed out at the same time, and Su Yunxi, who had regained most of his strength, retreated more than ten meters. The sea of ​​​​fire and the power grid blocked all the attacking directions of the fourth-level zombies. Su Yunxi rudely threw a huge thick white mist onto the fourth-level zombie.

"Ow!~" The scream was completely different from the previous roar, making the zombie's eyes even more blood red. After being purified, a black liquid like pus overflowed uncontrollably.

It looks extremely disgusting.

Two mid-level three and one early level three. Under normal circumstances, such a combination would have little chance of winning against a level 4 zombie, but among these three people, one was the original protagonist of this world, and the other was the villain who could have lived to the end in this world. There is another one, which is an anomaly that the world has begun to admit.

The abilities of the three people happened to be the natural enemies of the zombie virus. The combination of two controls and a powerful output successfully stumbled the footsteps of the fourth-level zombies.

"Be careful!" With a hoarse shout, Su Yunxi only had time to roll on the spot. Unless it is a last resort, he will definitely not move forward in the space of people.

Of course, if life is in danger, that's another story.

A huge figure stood in front of Su Yunxi, and a third-level zombie that appeared out of nowhere swiped its paw across the man's face.

Red **** water, with a piece of flesh and blood. Su Yunxi's mind was blank for a moment, and the late panic made his scalp numb and adrenaline exploded.

A purple electric arc mixed with white balloons hit the zombie at the same time. Silently, the zombie turned into a pool of black water.

Wei Shi turned his head, and even smiled at Su Yunxi in the mood. There were scary wounds on his face that seemed to feel no pain.

Su Yunxi wanted to help with the treatment, but Wei Shi avoided it instead.

Seeing that Wei Shi's life was not in danger, Su Yunxi's anger skyrocketed and he threw himself into the battle again. When Su Yunxi once again enveloped the fourth-level zombie with a milky white light group, Yu Bo and Huangfu Aotian exerted their strength at the same time, exerting all their strength to release the strongest blow.

After a long time, the zombies in the distance began to wander aimlessly. Yu Bo and Huangfu Aotian took a big step back uncontrollably and began to gasp for breath. Less than a hundred meters away, a gray corpse was lying on the ground.

Li Xiao got out of nowhere, and quickly rushed to the corpse to open his skull and take out a crystal nucleus the size of a fist. Before Huangfu Aotian could react, he had already turned around and handed over to Su Yunxi.

Huangfu Aotian opened his mouth, but in the end he didn't say anything. Su Yunxi threw two third-level crystal cores to Huangfu Aotian with his backhand, and then put away the fourth-level crystal core.

Li Sansheng drove over with a red face, looking at Su Yunxi with apologetic eyes. Although in the original plan, he did not have the task of protecting Su Yunxi. But when Su Yunxi was in danger before, Wei Shineng, who was also in the power department, rushed over, but he was still in the rear thousands of miles away to help and only transfer.

No matter what I say, I feel it is my fault.

When Su Yunxi fell to Yu Bo's side, Yu Bo took advantage of the situation and picked him up. When he walked to Li Sansheng, Su Yunxi threw the earphone crystal core angrily and smashed it. "Hey, hey, please put away your crying expression, I'm not dead yet."

Yu Bo also kicked three times vigorously. "Just complete your task, and I will protect my people myself."

Without finishing speaking, Li lowered his head and wiped his eyes fiercely. Li Xiao scratched his head, his face also embarrassed. After all, he and Li Sansheng were the only people who brought them back this time. If there is really something wrong with Su Yunxi, it must be the two of them dereliction of duty.

However, Li Xiao always has a more active mind. Quickly walked to Wei Shi, grabbed the person and took them to the car. "Thanks to you before, brother."

Wei Shi squeezed out a stiff smile, but followed Li Xiao's strength and got into the car together.

Until his subordinates came over, Huangfu Aotian, who was standing still, held the crystal nucleus in his hand and turned to leave. There was no usual smile on his face, and his eyes became a little deeper.

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