After the apocalyptic disaster, this underground passage has been closed, and each metal gate is made of mixed metal, which is very thick and strong, and if you want to break it violently with Mu Xiao's top body quadruple realm, it will take at least a day or two, or uninterrupted full force bombardment.

A metal gate has such a strong defense, but there is more than one metal door in the underground passage, so you can imagine how slim it is to break all the metal gates and escape.

Therefore, there are only two outcomes for the people in the passage, one is a dead person, and the other is a person who is invaded by despair and turned into a mutated monster.

Mu Xiao and Mu Xuanyin entered this passage for about half an hour, killing several waves of enhanced zombies, and there was almost no ordinary zombie in it, all of them were strengthened zombies, which indirectly proved that these guards were extremely strong before the hygiene, and the lowest after the mutation was also an enhanced zombie.

Even if he evolved a mutant, Mu Xiao didn't think it was anything unusual.

Not long after his thoughts came to him, when he was about to open the next metal door, he keenly sensed a cold, dead, rotten and deep aura seeping out from behind the door.

"Ayayin, pay attention to it, there may be a big guy inside, you cooperate with me to attack." Mu Xiao said a word to Mu Xuanyin, and waved back the biochemical mechanical dogs behind. Mu Xuanyin responded rigorously, the energy machine gun was aimed at the front, and the mecha system was activated to be on alert.

Mu Xiao began to repair the light brain of the metal door, and the moment the door opened, a terrifying hand as pale as a ghost's claw, covered with a deep and obscure rotten death, as if it was a hand of all evil stretched out from hell, it seemed to be extremely slow, but it was actually extremely fast, turning into an afterimage and grabbing Mu Xiao's face.

Before the terrifying hand really grabbed it, the rotten death qi full of poison had already rushed in, as if as long as one bite was inhaled, all the internal organs would turn into pus and blood.

Boom!

Mu Xiao's eyes bloomed with a ray of fine light, and the Nian Yuan Force was like a powerful crossbow arrow, striking back, blasting the terrifying big hand like a ghost claw in front of him, colliding with a low and dull sound, but there was no sound of bones breaking.

This blow of the source force, Mu Xiao used a half-adult body strength, enough to the extent of five thousand kilograms, the other party only suffered a loss, and there was no serious trauma, which means that the other party has at least the strength of the top body double realm.

What appeared in front of him was no longer a passage, but a central hall, a humanoid monster retreated to the darkest place, obviously being hit by Mu Xiao and becoming very vigilant, a pair of cold eyes containing boundless violent death intent stared at it, as if there were countless fierce ghosts devouring souls.

"Mental intimidation is simply a pediatric ability." Mu Xiao's thoughts were as sharp as sword intent, and he instantly slashed the spiritual attack projected by the mutant through his eyes, and at the same time, his thoughts turned into a sharp thought, which devoured the spiritual consciousness of the mutant in the past.

Hum...

The mutant let out a broken muffled snort, and was hit back again, suffering two consecutive losses, knowing that the opponent was not easy to deal with, and suddenly burst out of the palace to an entrance.

This mutant has nearly eighty times of genetic resonance, which is about the same as Mu Xiao's.

There must be a lot of guards here, and there will not be only one mutant who has evolved, so this mutant may be the winner who kills all the mutants, thus evolving the height of eighty times of genetic resonance, just like raising Gu, in a closed place where there is no way out, mutants are not group creatures originally, only the evolutionary desire of lonely and cold killing intent, and companions are also the best evolutionary resources.

Therefore, it is natural that a group of mutants had a cannibalistic battle, and the mutant who survived in the end may be the one in front of Mu Xiao.

"Want to escape?"

Mu Xiao's body moved suddenly, and the Nian Yuan Force simultaneously stimulated the Lu Sect, and Mu Xuanyin behind him reacted extremely quickly, and the energy machine gun shot out a long whip of light bullets, sweeping away the entrance where the mutant was rushing, trying to force the mutant back.

Nian Yuan Force was like a big hammer bombardment, the moment Mu Xiao rushed to kill, the mutant was actually under the high speed, incredible serial retreat, changeable direction, dodging the invisible bombardment of Nian Yuan Force, and also narrowed the distance that Mu Xiao rushed to kill.

The shadowy extremely fast body showed an extremely high reflex nerve and sharp nerves, and in an instant, it had turned to the exit direction where Mu Xuanyin was.

The place where the mutant just wanted to enter was just a feint, and he really wanted to escape from this sealed basement, because it was trapped here and going crazy.

It's just that this mutant underestimated Mu Xiao's reflexes and Mu Xuanyin's ability.

A spiritual force spread like water waves, Mu Xuanyin's "psychedelic" and "illusion" changed the surrounding landscape, and five or six identical exits appeared, and her standing figure also divided into five or six mecha figures, and synchronously quickly dialed out the double-edged energy long knife behind her back, stepping like thunder, five or six skills were practiced and brave, with a determined sword light, and slashed straight down.

At this time, the mutant used reflex nerves and keen nerves, as if they had been rehearsed, and narrowly avoided five or six dense knife lights from the synchronous slash, and only one of these five or six sword lights was real, but the mutants dodged all of them, and this keen sense of battle was very terrifying.

But Mu Xuanyin only had a moment to block the mutants, but it provided Mu Xiao with an excellent opportunity to make a move.

A thought source force was as heavy as a thousand jun, and in the strain between the mutant's lightning and stone fire, it smashed into its back, instantly interrupting its keen sense of battle, and flew out of the body with a heavy blow.

"Only the ability to fight reflex nerves, combined with the ability to control the fighting, can form such an incomparably terrifying sense of battle." Mu Xiao said to himself, in the short battle, he found out where the sense of war on this mutant came from.

Originally, he had some suspicions, so he didn't use the double-edged energy long knife, that was because the weapon target was too large and the swing was directional, and the mutant had such a superb sense of terrifying war, he could completely capture the trajectory of the knife and effectively avoid it.

Mu Xiao was sure at this time that this mutant had killed all the mutants here, thus successfully gaining a variety of abilities and having such terrifying combat power.

"Huh?"

At this time, Mu Xiao found that he had not yet disabled the mutant with a full blow of 10,000 kilograms of Nian Yuan Force, and he could still stand up and prepare to kill, but its movements seemed to be not very neat, and it was obvious that the full force of the blow still caused damage to it.

The place where the mutant is standing is exactly where Mu Xuanyin's mecha releases the light, and now the mutant is not in the shadows, and it is not in the extreme speed, Mu Xiao and Mu Xuanyin found out that this mutant turned out to be a female, but after the evolution and mutation, the most obvious chest feature of the female has disappeared, because this is more conducive to fighting, if this mutant is not a look, and there is still a female face before the mutation, it is not surprising to think that it is a male.

"This female mutant has no less than five abilities, the first is a corrosive and poisonous aura, mental intimidation, combat reflex nerves and combat control, and now there is also an ability to reduce damage......"

Mu Xiao decided not to spare any effort, and prepared to fully stimulate the divine power of his mind to fight.

The female mutant seemed to feel the killing coercion that suddenly erupted on Mu Xiao's body in advance, and stepped hard under her feet, striking first, and suddenly bursting up, and a corrosive poison on her body surging like countless dense flying insects.

The divine power of the mind was like a thunderous wind, strangling the corrosive and poisonous gas, Mu Xiao's whole body exploded like a cannonball, and a punch rushed in, like a mighty pressure like a wave, and it was shot out with the momentum of thunder.

The female mutant found a gap and was about to dodge and counterattack with a very high reflex nerve and a sense of battle control, but Mu Xiao also had the strength to control the fighting, and the reaction ability of the top body quadruple realm intended to make up for the gap in the combat reflex nerves, and Mu Xiao also had the senior combat consciousness of the previous life, so he made adjustments in an instant and blocked the female mutant's most retreat path.

The gravity punch that destroyed the withering and cleverness hit the chest of the female mutant like a cannonball, and there was a clicking sound in the body, as if the bones were about to be knocked out of the body by this punch, and the whole person flew upside down in mid-air like a rag doll.

Peng Ran!

The female mutant had not yet recovered in mid-air, and in an instant, there was a divine power like a thunderbolt, taking advantage of the victory to pursue, and the body of the female mutant was bombarded, with a double blow of body and spirit, and the female mutant suddenly let out a piercing scream like sharp nails cutting through glass.

Mu Xiao's body followed quickly, and the double-edged energy long knife that had been useless in his left hand was like thunder and lightning in the night, and in the moment of shining light, it slashed off the head of the female mutant, and the screams came to an abrupt end.

A rather rich source of evolutionary power, like warm water, integrated into Mu Xiao's bloodline genes, coupled with the source of evolutionary power that he had been accumulating in his previous battles, he improved the genetic resonance twice in a row, reaching eighty-four times.

On the headless corpse of the female mutant, a source of "combat control" that Mu Xiao felt sorry for and took for granted. This "fighting" ability cannot be at the "control" level from the beginning, it is very likely that the female mutant killed the rest of the mutants, absorbed several "fighting" abilities, and fused them into one, so that there is a degree of "control".

As for the "corrosive poison", "combat reflex nerves", and an unknown ability to reduce damage, they are the three abilities that female mutants are more excellent, but they have not emerged, but a "combat control" is actually not bad, which can make an ordinary new human become a melee expert.

However, it is not suitable for Mu Xuanyin to absorb, that is, her evolution direction is not a melee type, and with such a source on her body, it really has no impact at the beginning, but it is conducive to combat, but after she is promoted to the evolution realm, there will be a situation that is not very coordinated. Therefore, Mu Xiao had told Mu Xuanyin a long time ago that she would only absorb the abilities of the spiritual system, and absorb less of the rest of her abilities.

In the early days, many new human beings did not understand the impact of ability on the future, and blindly thought that increasing ability was a manifestation of strength, which led to an extremely difficult direction of evolution in the future, but it was also because of such a difficult process that there were senior new human beings in the new world of the new world, and they understood the characteristics of all abilities, understood the combination between abilities, and the correct direction of cultivation.

In the future, if the new humans who were born in the new world were to get the guidance of a senior new human, the road of evolution would definitely save several years of exploration. However, now Mu Xiao is the only senior new human in this world, which means that the people around him will take many detours, and the evolution speed will definitely be several times faster than other new humans, and it can even be said that the road ahead is unimpeded.