Seeing that Wei Fan's knife was about to slash at the head of the Corpse King, the Corpse King suddenly stretched out his arm to block the head, and with the Corpse King's angry roar, Wei Fan cut off the Corpse King's arm.

The roar of the Corpse King also summoned back the level 4 zombies that Gen Wang Han and the others were entangled, and at the same time, the giant zombie beside the Corpse King also reached out and fanned Wei Fan.

Wei Fan easily dodged the attack of the giant zombie with his shave, and widened the distance between him and the corpse king, looking at the layers of protection around the corpse king, Wei Fan knew that it was impossible to kill the corpse king.

He failed to kill the Corpse King by surprise, and now that the Corpse King has obviously taken precautions, the same method cannot be used a second time.

"Withdraw!!" Wei Fan shouted unwillingly, and returned to the car after a few flashes, Wang Han saw Wei Fan coming back and stepped on the accelerator, and the off-road vehicle rushed towards the outside of the corpses.

Wei Fan was in a very bad mood at this time, he didn't seize such a once-in-a-lifetime opportunity, and it would not be so easy to do it to the Corpse King next time.

Therefore, the zombies along the way became Wei Fan's punching bag, and under all kinds of bombardment, the off-road vehicles quickly highlighted the heavy encirclement of the corpses and went away in the direction of the base.

At this time, the soldiers who were sticking to the second line of defense saw that Wei Fan had withdrawn and began to withdraw to the base according to the order, and Wei Fan's plan to block the zombies with the two lines of defense had also failed.

Although the pre-placed explosives are still holding back the corpses, it is only a matter of time before they reach the base.

On the way back, the whole team exuded a dull atmosphere, although there were no casualties in this operation.

Wei Fan sat in the car and didn't say a word, admittedly he was a little taken for granted, not only underestimating the ability of the Corpse King, but also failing to calculate the power of thermal weapons in the last days.

The only thing left to do now is to retreat to the base and fight the Corpse King to the death.

Wei Fan simply closed his eyes and rested in the car, the previous series of killings made Wei Fan's body a little unbearable, and took the opportunity to take a good rest to deal with the next big battle.

The team retreated towards the base in an orderly and rapid manner, and at the same time, a series of explosions behind them also reminded people that the crisis had not been resolved.

Soon the walls of the base were already in sight, and most of the survivors of the base were digging pits according to Wei Fan's request, and Wei Fan immediately ordered to stop digging pits and let all the survivors be dragged into the base.

At the beginning, Wei Fan was going to use this pit to bury all the zombies in Pingsha City, but with the existence of the Corpse King, all plans were going to be put on hold.

As soon as he returned to the base, Wei Fan rushed to the research institute non-stop, and now he was eager to know whether Zou Ming's research had succeeded, this might be the last chance.

When he came to the research institute, Wei Fan directly found Zou Ming and began to ask him about the results of his research: "Has Zou Ming researched it, the zombies are about to come to the city." ”

"It has been studied, but it has not been tested and the power is uncertain, and some other uncertainties in the first level have not been resolved." As he spoke, Zou Ming took out a pistol-shaped weapon.

I saw that this weapon was pitch black, larger than a pistol, and the muzzle was particularly thick, so it was more appropriate to call it a hand cannon.

"This weapon I call it an energy gun, it needs to be filled with evolution beads as an energy supply, and the power of the output energy can be adjusted, the greater the power, the higher the level of evolution beads required, and the longer the charging time." Zou Ming introduced to Wei Fan.

"At present, the intelligent filling of level 3 evolution beads, level 4 can theoretically be filled, but there are many unstable factors."

Wei Fan looked at the energy gun in his hand and couldn't say whether he was happy or sad, it was true that the energy gun designed by Zou Ming was powerful, but the flaws were also obvious.

"I'll take this one, you should hurry up and study it, try to shorten the charging time, and the unstable factors of using high-grade evolution beads should also be solved as soon as possible."

Saying that, Wei Fan left the research institute, facing the imminent zombie siege Wei Fan still has a lot of things to arrange, this time it is not like the previous two times that he can retreat if he fails, there is no place to retreat.

When Wei Fan came out of the research institute, he found that there was no one in the bounty hall at this time, so Wei Fan hurried to the city wall.

At this time, the walls were already full of people, soldiers, evolutionaries, and ordinary survivors, each with a weapon in their hands, ready to fight.

Wei Fan found Hua Lao in the crowd, and when Wei Fan walked over, he found that Hua Lao was pacifying the ordinary survivors on the city wall.

Seeing Wei Fan coming, Hua Lao hurriedly greeted him, "Xiao Fan, help me quickly persuade these people, they don't listen to what I say, they have to stay and help us guard the base." ”

Wei Fan gave Hua Lao a reassuring look, stood up and said aloud.

"Listen to me quietly, I know how you feel at the moment, and thank you very much for having this heart, but the city walls are too dangerous for you.

Zombies can be attacked at any time, and the purpose of establishing the base was to give everyone a foothold in the last days, but now the base is at a critical juncture of life and death.

But please believe me, if you want to do your part, then go to the base and stay away from the city walls, this is the biggest help to guard the base, now all the evolutionaries and ordinary survivors below level 2 have withdrawn to the base, and they can't come out without orders. ”

After saying that, Wei Fan ignored the opposition of some people and directly asked the soldiers to forcibly drive these survivors down, it is a good thing to have this heart, at least it shows that they have regarded the base as their home, but these people will not have the slightest effect on the contrary, but they will have to divide their forces to take care of them, and the gains outweigh the losses.

At this time, there was a hot scene on the city wall, all kinds of light and heavy sniper rifles, large-caliber machine guns, machine guns, and some weapons that Wei Fan had never seen were set up on the city wall one after another.

In order to deal with this zombie siege military region, all the inventory was taken out, even if these things were kept and waited for the zombie level to be high, it would not be of much use, it was better to take advantage of this opportunity to use it, anyway, it was not a waste to kill zombies.

Speaking of inventory, Wei Fan remembered a trivial matter, that is, the failure of electronic instruments caused all the fighters in the military region to be unusable, and some old-fashioned fighters have long been eliminated, and the military region does not have them at all, so Wei Fan's idea of attacking the corpse king by air cannot be implemented.

Wei Fan's only hope now is to try to reach level 4 before the city is broken, although the energy gun researched by Zou Ming has a certain chance of killing the corpse king, Wei Fan doesn't want to pin his hopes on the energy gun.

The previous sneak attack had already alerted the Corpse King, so Wei Fan would not make a rash move if he failed to kill with one hit.

Night is falling.

After a busy afternoon, under the dual pressure of physical and psychological pressure, the soldiers began to become sleepy and weak, so Wei Fan ordered the soldiers to rest in batches, while he himself stared ahead without blinking.

Wei Fan tried his best to pray for the corpses to wait for dawn, because it was much more difficult to defend the city at night than during the day, and the vision was very serious on the one hand, but the bonus to the corpses at night was very serious.

However, the heavens were obviously not on Wei Fan's side, and soon Wei Fan heard the roar of the corpses, dozens of searchlights were turned on at the same time, and the entire city wall was like daylight, and the corpses were completely displayed in front of the base.