When Chen Fei reached the third underground floor, the zombie radar had already resumed the detection of zombies on the ground, and the terrifying number of 48763 allowed Chen Fei to guess the dangerous situation faced by everyone on the ground even if he didn't see it with his own eyes.

After the elevator door opened, a dozen weary soldiers began to quickly carry the laboratory's instruments and equipment, and carried them all onto the military truck.

"Everyone is ready to retreat!"

Seeing that the transportation of those instruments was about to be completed, Company Commander Wang couldn't wait to give the order to retreat.

"Can't leave yet, there are still a few important pieces of equipment to take away! Gotta go down a second time! ”

Li Yunfei's anxious voice sounded from the walkie-talkie, at this point, they must complete the task perfectly, if they leave some important equipment behind, this operation is half completed at most!

"I can only give you three more minutes, move fast, we can't support it anymore!"

When Company Commander Wang gave the order, he was anxious to grit his teeth, and the green tendons on his forehead bulged, it was true that they were now close to the limit, but the zombies around them were increasing instead of decreasing, and the more they gathered, the more they gathered!

Company Commander Wang looked up at the two helicopters hovering in the air not far away, and shouted into the walkie-talkie:

"The ground unit called in the air squad for support and requested to drop gasoline bombs in the area where the zombies are concentrated!"

"Roger! The air squad prepares to drop petrol bombs! ”

After the response was heard over the intercom, the nearest helicopter began to fly towards the building of Ultron Biopharma, and the helicopter circled in the air for a moment, and selected an area to start dropping gasoline incendiary bombs.

A flame ignited like a mushroom cloud in the concentration of the zombie group, and in just an instant, the stench of the zombie corpses filled the surrounding air.

Chen Fei did not go down to transport those laboratory equipment for the second time, but took Wang Yuanyuan to board the armored car driven by Nangong Jin together.

Nangong Jin stepped on the accelerator and drove the armored car back to the position just now, because of the departure just now, the combat pressure on Wu Gang's side doubled, but fortunately, Mu Meiqing and their side came back in time.

Chen Fei took out a whole box of grenades from the back compartment of the pickup truck, put it in front of Wu Gang and the others, and commanded with a solemn expression:

"There are too many zombies gathered around, don't be stingy with grenades for a while, everyone throw as far away as possible and concentrate more!"

After Chen Fei finished speaking, he noticed that Wu Gang's face was obviously tired, and it was obvious that he had put most of the combat pressure on himself in the battle just now, and used this way to relieve the pressure of others.

Chen Fei quietly took out an evolution potion, since it was successfully made in the gene laboratory, Chen Fei hadn't taken it out, and used it on Wu Gang's body again without covering the heat in his hand.

Wu Gang only felt as if his shoulder had been bitten by something, and then he once again experienced the familiar feeling of last night, and the fatigue of his body was swept away, and his body seemed to have inexhaustible strength.

In order to experience the effect of the evolution elixir, Chen Fei smashed into the zombie group with one person and one spear, not caring about the consumption of physical strength at all, and his movements were wide open and closed, fierce and fast.

Within a radius of three meters centered on Chen Fei and the spear, it has completely become a vacuum, and any zombies that approach will be killed by Chen Fei, and the number of zombies he kills alone can already be compared to the number of zombies killed by a team of evolutionaries.

However, in addition to Zhuge Kamikaze, who looked at the overall situation, as for the evolutionaries of the other evolutionary teams and their team members, they were all busy fighting the zombies that were surging around them.

The helicopter's gasoline bomb attack relieved Chen Fei's combat pressure to a certain extent, but it was also because the helicopter was overhead, and the movement caused by the gasoline bomb attack just now attracted some zombies in the distance to this side.

The pilots and soldiers in the helicopter could clearly see the horrific scene of zombies gathering in one place like ant colonies in all directions.

"Attention ground units, the zombie gathering has gotten out of control, you must evacuate immediately, the number of zombies on the west side should be relatively small, it is recommended that you break through from the west side, we will cover you with fire in other directions!"

Before, everyone didn't know what Li Yunfei had encountered underground, and because they didn't get a response, they would give the order for 8 minutes, but now they all know that Li Yunfei and those soldiers are going down to get important equipment, so no matter how long they have to hold on before Li Yunfei and they don't return to the ground!

At this time, the soldiers and the evolutionary team must be united, in fact, many evolutionary team members already have the idea of evacuating first in their hearts, but when the number of zombies around them reaches the level of corpse tide, the lone boat composed of the vehicles of each team cannot safely cross the sea of zombies, and only when all the vehicles gather together and condense into a cruise ship can it be possible to rush out.

What made everyone breathe a sigh of relief was that this time Li Yunfei and their time was relatively much shorter, and after seeing those soldiers carrying all the instruments onto the military truck, Company Commander Wang hurriedly gave the order to retreat.

As for the extra centaur in the team, there were people who cared too much about this for a while.

"Begin to retreat! Seven shifts and eight shifts of heavy fire cover! ”

Two converted trucks opened the way, and the soldiers drove armored vehicles to protect the two military trucks transporting instruments and equipment in the middle, followed by vehicles belonging to the evolutionary team in the middle of the convoy.

At this time, if you change to some private cars with small horsepower and low chassis, it is difficult to move an inch in such a crowded tide of corpses, even if it is a military armored vehicle, you can still hear the mournful sound of the engine, if the engine is in a state of high load for a long time, there will definitely be a breakdown.

The car broke down in the crowd of zombies, which was basically equivalent to a death sentence, and the people in the car couldn't get out of the car at all.

However, after rushing out of the courtyard of Ortron Biopharmaceuticals, everyone has to face crazy zombies from all directions!

Chen Fei and Wu Gang, as the two most powerful people in the survival team now, threw grenades with both hands before the convoy started.

In just a moment, Chen Fei threw out more than thirty grenades, plus the grenades thrown by Wu Gang, which greatly relieved the pressure of the zombies in front.

The soldiers in charge of fire cover in the rear have even used howitzers, which are weapons of large-scale destruction, although they have a significant effect of cleaning up zombies, but the pressure on the convoy to evacuate has not been reduced at all.

The problem of the evacuation of the convoy is not only the thumping zombies that frantically rush around to hit the car, but also the problem of road conditions.

A large number of zombie corpses on the road affected the driving of the vehicles, those sticky and foul-smelling black blood on the ground like a layer of grease, even if the performance of these cars is strong, they can't escape the fate of tire slippage, which causes great trouble for the evacuation of the team.

Fortunately, there are two heavy trucks in front of the team that are specially responsible for opening the road after modification, and the vehicles behind can move steadily behind the trajectory of the heavy trucks, as long as they can rush out of the center of the zombie gathering, the pressure on the team will be greatly reduced.

The car is just a means of transportation for its driver, but they also occasionally vent some small emotions, small tempers, only usually treat it well, at the critical moment it will not give you emotions.

Chen Fei's team has He Guan Tao and Zhou Fa, two simple duo with brains who are obsessed with car repair, and when they have nothing to do, they guard a few cars of the survival team, carefully inspecting them inside and out, from the engine to the line bearing.

The two of them seem to be simple-minded, but they are the smartest people, they know what their most important value to the team is, so they will try their best to do their part, which is also the reason why they can have a solid position in the survival team, and they can't survive in the end times for too long just by playing treasures.

It is precisely because of the existence of He Guan Tao and Zhou Fa that Chen Fei, Nangong Jin, and Wu Gang never think about whether the vehicle will have problems, which is their recognition and confidence in the simple duo of brains.

In fact, the three cars of the survival team are the smoothest in the zombie crowd, while the other evolutionary teams are not so lucky.