As expected, Chen Fei and the others still found nothing on the third basement floor, and they only returned to the elevator shivering from the cold one by one.

"Shhh........hh Walk around..... Let's go!

Go down to the next level....... Coldly died...... Hiss ......"

Compared to the soldiers who have undergone the rigorous training of the army, the members of the evolutionary team are a little lacking in willpower, and as soon as they enter the elevator, they hurriedly urge the elevator to leave this floor.

Chen Fei's face was also ugly, but it was not because the third underground floor was too cold, but because Wang Yuanyuan subconsciously leaned close to Chen Fei to keep warm.

The reason why Chen Fei's expression is so solemn is very simple, the building space in the underground area is a shrinking structure, because the zombie radar does not have the ability to combine the terrain that Chen Fei wants, and in this kind of building with height difference, Chen Fei cannot accurately determine the location of the target zombie.

When he arrived at the third basement floor, the radar inexplicably appeared with the diamond-shaped mark of the **** mutant zombie, as well as an orange mark representing the evolution beast.

This zombie radar seems to have a limit on the detection of underground depth, and when Chen Fei was on the ground, there was only one mutant zombie that Chen Fei detected, but now there are three of them, plus an evolution beast.

The only thing to be thankful for is that there are no second-level mutant zombies in this, otherwise Chen Fei can only suggest that everyone cancel this mission, what he expects is that these mutant zombies can be compared to the upper layers, so that the space that can fight will be slightly larger, and the deeper the underground space is reduced, the more powerful it is for zombies.

The sound of the warning in his mind became more and more urgent, judging from the display of the zombie radar, one of the diamond-shaped markers was in front of Chen Fei, and Chen Fei was facing the door of the elevator, what this meant Chen Fei knew very well in his heart.

"Li Yunfei! There is a case! Get ready for battle! ”

Chen Fei told Li Yunfei, some ordinary zombies gathered at the door, even if they were caught off guard, with the fighting quality of the soldiers and Li Yunfei at the front, it would not cause any serious impact.

However, mutant zombies are different, if they are suddenly attacked by mutant zombies in an unguarded situation, it will definitely cause damage to some people, and those are not the situations that Chen Fei wants to see.

Theoretically, the building of Ortron Biopharma has only 10 floors underground, but in fact, each floor is 5 or 6 meters high, which means that the depth of the 10 floors underground is equivalent to the height of 20 floors above ground.

Because of its large size, the transportation elevator is descending very slowly.

As soon as the elevator stopped on the fourth basement floor, a pair of sharp claws pierced the elevator door and pierced the chest of a soldier waiting with a gun next to Li Yunfei.

If Chen Fei hadn't reminded Li Yunfei before, another sharp claw would have pierced his chest.

"Everyone, back off!"

Li Yunfei let out a low roar, and decisively used the ability of lithomorphization of his whole body, turning into a two-meter-tall rock man state!

Several soldiers beside him quickly took a few steps back and leaned closely against the soldiers behind him.

The claws quickly retracted as soon as the claw was blown, and at the moment the elevator door opened, a figure with a pungent fishy smell was about to burrow into the elevator, if it was rushed into the elevator by this tall and thin mutant zombie with a pair of sharp claws, it would undoubtedly be a tragic slaughter in a narrow and confined space.

Li Yunfei also knew this, so when the elevator door was about to open slowly, he was ready to rush forward like a rugby player, and the mutant zombie just got its head into the elevator, and was held by Li Yunfei, who was like a tank, and pounced out of the elevator with a ferocious momentum.

"!!"

Li Yunfei shouted angrily, and his voice after the lithification had a kind of echo reverberation, as if he was using a voice changer, and it sounded low like a transformer.

Li Yunfei knocked down the mutant zombie, and the mutant zombie moved as quickly as a loach before Li Yunfei completely trapped it. 77 eBooks

At this time, everyone saw the appearance of this mutated zombie clearly, and it should be a woman in its dress and figure, and eighty percent of it was also a staff member here before her death.

Compared to other zombies, its appearance is closer to that of a normal human on the whole, the skin is dark gray, with black blood vessels crisscrossing it, a pair of bloodshot eyes with a pair of tiny red pupils as thin as the tip of a needle, its arms are much longer than normal humans, and the black nails like sharp knives have reached the height of her knees.

A soldier raised the 81 bar in his hand without thinking, and pulled the trigger, as a squad of comrades-in-arms, after the zombie virus raged in the end times, most of them lost their families, so the comrades of a squad became each other's relatives and brothers.

Seeing their brother die on the spot when he was stabbed in the chest with a sharp claw, the soldiers became emotional one by one, trying to suppress the anger surging in their hearts.

And just before the soldier pulled the trigger, the mutant zombie seemed to have a premonition, quickly ducked to the side, and then ran quickly towards the depths of the passage, gurgling sounds echoing through the corridor.

Immediately afterwards, Chen Fei heard the sound of messy footsteps coming from the depths of the corridor, and judging from the display of the zombie thunder, there were dense small red dots in the passage.

"It's coming! There are a lot of quantities everyone be careful! ”

Chen Fei reminded him, but he didn't need to explain that everyone had heard the chaotic footsteps, and they all looked highly vigilant.

The soldier's squad leader looked a little solemn, holding the 81-bar automatic rifle in his hand in his right hand, and slowly raised his left hand, when the first zombie appeared in his sight, he waved his left hand down.

"Fire !!"

Da... Da.... Click

The sound of 81 bar shooting sounded again and again in the passage, and the zombies were accurately shot through the heads by the soldiers, and the zombies in front just fell, and the zombies in the back stepped on their corpses and rushed over.

Chen Fei held a spear in his hand, and his eyes were locked on the zombie group, the mutated zombie was very cunning and hid in the zombie group, waiting for an opportunity to attack them.

"Refill the magazine!"

Just as the soldiers in the front row were running out of bullets and preparing to change their magazines, a figure rushed out of the zombie crowd, and its sharp fingertips scratched five eye-catching marks along the wall.

Because of the formation, the soldier had very limited space to dodge, which made it impossible for him to react in the first place.

At the critical moment, Li Yunfei rushed out of the middle of the soldiers, and a pair of rock arms crossed in front of him to block the attack, and while defending, the rock arms condensed into a knife shape, slashing at the mutant female zombie in front of him!

The stone knife that Li Yunfei's arm changed was very ruthless and slashed at the neck of the mutant zombie, but it did not cut the neck bone of the mutant zombie when it entered the flesh.

The mutant female zombie retreated sharply again, Li Yunfei wanted to chase but was blocked in the passage by the zombies that surged up from behind, and in the blink of an eye, the mutant female zombie pulled away and ran to the depths of the passage.

The zombies on this level are obviously beyond the upper three layers, and the soldiers each changed their magazines twice before they finally cleaned up the zombies in the passage.

Chen Fei and Li Yunfei glanced at each other, and the two walked to the front of the team, and followed the passage to find the traces of the mutant female zombie, in other words, others would need to look for it from room to room, and Chen Fei had a zombie radar, so he had already asked Mo Mo to lock the location of the mutant zombie.

It's just that in order to prevent his performance from being too suspicious, Chen Fei still followed Li Yunfei's room-by-room investigation, and this was also done to make sure that the equipment they needed was not on this floor.

Chen Fei saw a lot of medicines on this floor, and the medicines here seemed to be of higher value compared to the ones on the basement floor, and Chen Fei didn't know much about these medicines, but he took advantage of Li Yunfei to go to other rooms, and put some of the medicines packed in exquisite boxes into the storage space, and after he went back, he could ask Mu Meiqing to help see if there was any value, and when the time came, he could consider exchanging an anti-tank sniper rifle in the safe area.

Soon, Chen Fei and Li Yunfei walked to a room located in the deepest part of the fourth basement floor ahead of the soldiers and members of the evolutionary team behind them.