There are still two or three minutes to go....... Enough is enough!

For the sake of safety, Chen Fei carefully observed the mutant zombie's moves and routines, and made sure that there was no omission, and all the value of this mutant zombie had been squeezed.

Then the next step is to completely solve it, collect the purification crystals and keys.

Would you like to experiment with the abilities you just acquired?

This idea flashed in Chen Fei's mind, but it was quickly rejected by him, the introduction of the system just now is very detailed, the limit of this ability is currently that it can only be used once a day, that is to say, after he uses the ability, this skill needs a cooldown time of 24 hours.

This is one of Chen Fei's hole cards, which is used to save his life and counter-kill, in case he suddenly encounters an invincible danger in the 24 hours after he uses it, then he will miss a chance to save his life.

So just after thinking about it for a while, Chen Fei decided to hold back the curiosity in his heart for the time being and leave it for verification later.

Because he had clearly and in detail written down all the sixteen knife moves of the mutant zombies in his mind, Chen Fei's overly powerful brain even deduced the sixteen knife moves that were disassembled and recombined!

Although some of the splitting and recombining changes are not possible in practice, most of them are feasible, adding more possibilities to this simple knife technique.

What made Chen Fei even happier was that now he was just watching the mutant zombie's first move, and his brain had already calculated what moves the mutant zombie would use.

The crushing of strength can also gain insight into opportunities, and Chen Fei is already invincible after breaking through the evolution level!

When the mutant zombie attacked again, Chen Fei stabbed out with a strong and domineering spear, and the spear in his hand took the head of the mutant zombie from the defensive corner of the two long knife arms!

Chen Fei, who had no suspense, easily pierced the head of this mutant zombie, and the mutant zombie who had put Chen Fei in an embarrassment just now was beaten without the power to fight back after the breakthrough of the evolution level, and was easily killed by Chen Fei.

Therefore, Chen Fei more thoroughly realized the importance of the evolution level, no matter how strong your strength and ability are, but the suppression of the level cannot be ignored at all.

Chen Fei first ripped off the extremely complex golden key on the neck of the mutant zombie, and then skillfully took out the evolution crystals in the mutant zombie's skull.

After doing all this, Chen Fei began to look for the location of the door in the warehouse, and finally stopped his eyes on the somewhat abrupt wall where the mutant zombie was just now.

Chen stepped forward quickly and poked the wall with the bottom of his spear.

Boom.....

Listening to the unusually dull crashing sound, Chen Fei's face was happy, and after carefully groping for a while, he saw a somewhat abrupt red fire extinguisher near the wall.

Chen Fei walked to the side of the fire extinguisher and groped a few times, and found that the fire extinguisher seemed to be embedded in the ground and could not be taken out at all, which made him even more suspicious of the purpose of the fire extinguisher.

Chen Fei tried to turn the fire extinguisher clockwise and counterclockwise, but the fire extinguisher still did not move, and just when Chen Fei thought that he had made a mistake in guessing, his palm unconsciously pressed it.

The fire extinguisher, which had not moved at all, had moved down a few centimeters!

Feeling the fire extinguisher moving downward, Chen Fei's palm just pressed the fire extinguisher directly into the ground with just a little force.

Click.....

With the sound of the clattering gears, the wall in front of him slowly fell to the ground under Chen Fei's gaze, and a metal gate appeared in Chen Fei's sight.

Chen Fei didn't bother to observe the design of this mechanism, quickly found the location of a suspected keyhole, put the golden key in his hand into it, and began to rotate slowly.

With the turn of the key, the metal gate slowly parted to both sides, revealing a wide downward passage, Chen Fei did not dare to delay any longer, nor did he need to worry about any danger, and walked briskly along the passage towards the underground.

Judging from the display of the zombie radar, there are still a few zombies wandering near his location, but those zombies are not on the ground, but in the rare metal material warehouse underground, Chen Fei is not worried about this at all.

The wide passage is completely open to military trucks, and although there are no steps, the impact of walking is not great because of the gentle slope.

Chen Fei walked about two hundred meters along the passage, and a metal gate appeared in front of him, and there were two zombies in blue overalls at the gate.

When these two zombies felt the breath of living on Chen Fei's body, they rushed towards Chen Fei's side frantically.

Chen Fei put the spear into the storage space with a thought, and instead took out a long knife!

With the long knife in his hand, Chen Fei felt that the knife techniques he used were completely involuntary, and it could even be said that the long knife controlled him.

Chen Fei's movements were clean and neat, cutting off the heads of the two zombies, but the long knife in his hand was not stained with a drop of zombie blood.

Chen Fei knew in his heart that the reason why he was like this was because his brain had completely mastered these sixteen sword techniques, but his body had not yet completely controlled and adapted, but as long as he was given the most time, he would definitely be able to master the knife techniques and turn these into his own.

Chen Fei groped around the two zombies for a while, and found a key to open the second metal door, when the metal door opened, what appeared in front of Chen Fei's eyes was a huge underground space, which looked like an underground air-raid shelter, and the ground was neatly stacked with metals of various colors and shapes, and some of them were even ores.

Although there are many types, they don't look cluttered at all.

After a brief moment of joy and consternation, Chen Fei ran to the piles of rare metal materials with bright eyes, and began to transfer these materials to the material space.

When encountering rare metals and ores in small quantities, Chen Fei unceremoniously took most of them and left only one or six of them, but it was the largest number of metals, and Chen Fei planned to stay at the end and collect them.

Chen Fei didn't have time to carefully discern it, he just needed to collect the material space for every rare metal and ore, and what could be used to make it was not in his scope for the time being.

The last voice of the intelligent voice system occasionally sounded in his head, and all the rare metals and ores that were named after being detected by the system, Chen Fei directly included them in the material space.

Chen Fei knew that even if he filled all his material space, at most he would only take away more than one-third of the amount, and even if the soldiers followed him, it was impossible for them to know how many rare metal materials there were originally, so how much they saw, that was all here.

System: Detected Level 5 Rare Ore, Quabble Rough Stone Mine, which can be used to craft weapons and armor.

System Tips: Zhenjin is one of the best materials in the universe to make weapons, and the weapons made of Zhenjin can greatly enhance combat effectiveness and destructive power, and can pose a huge threat to some special types of zombies, evolutionary beasts and evolutionaries.

Chen Fei was about to collect the three largest quantities of metal, and among them was a metal that he needed a lot, which was one of the raw materials for making alloy arm guards.

However, the sudden sound of the prompt in his mind made Chen Fei's eyes light up, you must know that among the other rare metals and ores here, the highest rating given by the system is only level three, and the rest is level two, of course, the most are the street goods rare metal materials that the system is unwilling to rate.

Chen Fei followed the guidance of the system, and behind a pile of rare metals, he found a hidden metal door, and this metal door turned out to be a security door that could only be opened with palm prints and passwords, and Chen Fei seemed to have to try to open this door with force and violence.

However, judging from the display of the zombie radar, there is still a zombie behind this door, just when Chen Fei thought that he might have to lose his relationship with Zhenjin, he tentatively pushed it, and the metal door slowly opened!

And the moment the door was pushed open, a hideous zombie face appeared in front of his eyes, and he pounced on him with a low roar!

With the swing of the long knife, Chen Fei slashed down with a seemingly ordinary knife, and the zombie in front of him was actually split into two pieces by this knife from the middle of his eyebrows.

Looking at the corpse of the zombie on the ground, thinking back to the early days of the full-scale outbreak of the zombie virus, Chen Fei at that time could not cut off the head of the zombie with a single knife, but let the long knife get stuck on the neck bone, and the strength of the current one is very different from now, and his current strength is all due to the system.

Chen Fei looked at the center of the room, where there was a stone with a diameter of more than one meter and a crater like a meteorite.....