After the doomsday disaster, this underground passage has been closed all along. Each metal gate is made of mixed metals and is very thick and sturdy. It would take at least a day or two to break through with violent force, even if it's uninterrupted full-force bombardment.

  A metal gate has such a solid defense, but there is not only one metal gate in the underground passage, it can be imagined that it is so slim to break through all the metal gates and escape.

  So, people inside the tunnel have only two outcomes: either they become corpses or are consumed by despair and transformed into mutated monsters.

  Mu Xiao and Mu Xuan had been walking through this passage for about half an hour, killing several waves of enhanced zombies. There were almost no ordinary zombies inside, all of them were enhanced zombies, indirectly proving that the guards in front were extremely powerful before their transformation, and after mutation, they became at least enhanced zombies.

  Even if he evolved into a mutant, Mu Xiao didn't think it was anything out of the ordinary.

  He had just started to think about it, and was about to open the next metal door, when he keenly sensed that behind the door there was a cold, dark, and deeply decaying aura seeping out.

  "In the midst of the sound, there might be a big guy, you cooperate with me to attack." Mu Xiao said to Mu Xuan Yin, and also waved back at the biochemical mechanical dogs behind. Mu Xuan Yin responded sternly, the energy machine gun aimed at the front, and the mech system was activated to be on guard.

  Mù Xiāo began to repair the metal door's lock, when the gate opened in an instant, a pale and terrifying giant hand, full of dark and eerie decay, as if it was from hell, seemed extremely slow but actually extremely fast, transformed into a residual shadow that grabbed towards Mù Xiāo's face.

  The horror had not yet fully grasped, when a surge of deadly poisonous decayed death gas came rushing in, as if just one breath would turn the internal organs into pus and blood.

  Boom!

  His eyes gleamed with a thread of sharp light, his spiritual power was like a strong and powerful crossbow arrow, he counterattacked with one strike, blasting away the terrifying giant hand in front of him that looked like a ghost claw, producing a low and muffled sound, but surprisingly there wasn't any sound of bones shattering.

  This blow was infused with Yuan Qi, and Mu Shao had used half of his physical strength, which was equivalent to 5,000 kilograms. The opponent only suffered a minor injury and did not show any severe trauma, indicating that the opponent had at least top-notch physique in the Second Realm.

  What appeared before his eyes was no longer a passage, but a central hall. A humanoid monster retreated to the darkest place, apparently becoming extremely vigilant after being hit by Mu Xiao. A pair of cold and ruthless eyes filled with endless killing intent stared over, as if countless vengeful spirits were gnawing at his soul.

  "Mental intimidation is child's play." Mu Xiao's thoughts were as sharp as a sword, instantly killing the mental attack that had been projected through the eyes of the mutated person. At the same time, her thoughts transformed into a sharp intention, counterattacking and piercing the mutated person's spiritual consciousness.

  Hmph...

  The mutant let out a muffled hum, was counterattacked again, and took two consecutive hits. Realizing that the opponent was not easy to deal with, he suddenly burst into high speed and rushed out of an entrance.

  This mutant human's gene resonance is almost eighty times that of Mu Shuo.

  There must be many guardians here, and the evolved variant humans will not be just one. This variant human may be the winner who killed all the other variants, thus evolving to a high level of eighty genetic resonance, just like raising a guinea pig in an enclosed place that cannot be exited. Variant humans are not group animals anyway, only cold-blooded killing evolution*, and companions are also the best evolutionary resources.

  So, a group of mutants inevitably engaged in a fierce battle of mutual slaughter, and the mutant who survived to the end might be the one in front of Mu Xiao.

  Want to escape?

  Muxiao's body suddenly moved, and the power of Yuanyuan was simultaneously activated. The reaction from Muhuo's sound wave was extremely swift, and a burst of energy shot out a beam of light that swept away the entrance where the mutated human was charging towards, attempting to force the mutant back.

  The power of Nanyuan was like a giant hammer striking, and Muxiao was about to kill him in an instant. At that moment, the mutant unexpectedly retreated rapidly under high speed, making incredible consecutive turns and changes in direction, dodging Nanyuan's invisible strike and increasing the distance from Muxiao's killing blow.

  That vague and shadowy figure, with extremely high reflexes and sharp nerves, instantly turned towards the exit where Muzi was.

  The mutant's attempt to enter was just a feint; in reality, it wanted to escape this sealed underground room, as it had been trapped here and was on the verge of going mad.

  But this variant person underestimated Mu Xiao's reaction force and Mu Xiangyin's ability.

  A surge of spiritual energy spread like ripples on water, Mu Xuan's "Illusion" and "Phantasmagoria" altered the surrounding terrain, revealing five or six identical exits. Her standing figure also split into five or six mechanical shadows, simultaneously and swiftly drawing out the dual-bladed energy long knives from behind her back. With footsteps like thunder, the five or six shadows moved in unison, valiantly and courageously, with a resolute intent, their blades shining brightly as they slashed downwards.

  At this time, the mutant dodged five or six dense sword lights that came synchronously with a mixture of reflex nerves and sharp nerves, as if they had been trained. The five or six sword lights only had one real light, but the mutant dodged all of them. This kind of keen sense of battle was extremely terrifying.

  However, Mokuzou's obstruction of Vari only lasted for a moment, but it provided Mokuso with an excellent opportunity to strike back.

  A powerful blow struck its back with the force of a thousand pounds, amidst the rapid changes between the mutant's electric lights and stones, heavily smashing into it, instantly breaking off that sharp sense of war, and heavily flying out.

  "It's only the combination of combat reflexes and mastery of fighting skills that can create such an overwhelming sense of battle." Mu Xiao muttered to himself, after a brief exchange of blows, he had figured out where the intense aura on this mutant was coming from.

  He had already been suspicious, so he didn't use the double-edged energy long knife. The target was too big and the swing had directionality, while the mutant had such a high level of combat awareness that they could completely capture the trajectory of the knife and make effective evasions.

  Mushishi could now be certain that this mutant had killed all the other mutants in this area, successfully acquiring multiple abilities and possessing such terrifying combat strength.

  "Huh?"

  At this time, Muxiao discovered that his full-strength blow of 10,000 kilograms of Nanyuan force had not even crippled the mutant human, and it could still get up and prepare to pounce. However, its movements seemed to be no longer agile, and it was clear that the full-strength blow had caused harm to it.

  The Mutant stood where the wooden sound machine released its illumination, and now that the Mutant was no longer in the dark or at high speed, Mu Xiao and Mu Xuan only discovered that this Mutant was actually a female. However, after evolving into a Mutant, the most obvious chest features of the female had disappeared, as it would be more helpful for combat. If this Mutant didn't have its original female face from before the mutation, it wouldn't be strange to mistake it for a male either.

  "This mutant woman has at least five abilities, first a corrosive toxic gas, then spiritual intimidation, followed by combat reflexes and fighting control, and now also an ability to reduce damage..."

  Mù Xiāo decided not to hold back and prepared to fully unleash his mental powers to fight.

  The female mutant seemed to have sensed the sudden burst of murderous pressure from Mu Xiao's body, and with a forceful step forward, she took the initiative to attack, suddenly bursting forth with a torrent of corrosive poison like countless dense flying insects.

  His mental power was like a thunderstorm, strangling the corrosive and toxic gas, Mu Xiao's body burst out like a cannonball, with a punch that came crashing in, with an overwhelming force like a tsunami, striking out with the momentum of a thunderbolt.

  The female mutant had extremely high reflexes and combat control, finding an opening to dodge and counterattack. However, Mu Shao also had combat control powers, and his top-tier physical abilities made up for the difference in combat reflexes. Moreover, Mu Shao had the deep-seated fighting consciousness from his past life, making adjustments instantly and sealing off the female mutant's last retreat.

  The withered and cunning gravity fist, like a cannonball, blasted directly at the chest of the female mutant, emitting a cracking sound from inside her body, as if the bones were about to be punched out of her body. The whole person was like a broken rag doll, flying backwards in mid-air.

  It's Peng Ran!

  The female mutant hadn't recovered from the previous attack when another thought-provoking divine power, as swift as thunder, took advantage of the victory and struck her body again, dealing a double blow to both her physical and mental state. The female mutant instantly let out an ear-piercing scream, like fingernails scratching glass.

  Mu Xiao's body was as swift as a shadow, following closely behind. His left hand, which had been useless until now, wielded the dual-bladed energy longsword, slicing through the air like lightning on a dark night. In the brief moment of dazzling light, he struck down the female mutant's head with a single, unmatched slash, and her blood-curdling scream was abruptly cut short.

  A rather rich source of evolutionary power, like warm water, merged into the wood Xiao's bloodline genes, and with the accumulated evolutionary power source from his previous few battles, he continuously upgraded his gene resonance twice, reaching eighty-four times.

  A "Fighting Control" source appeared on the headless corpse of the female variant, which made Mu Xiao feel both regretful and unsurprised. This "Fighting" ability was unlikely to be at the "Control" level from the start, and it was highly likely that the female variant had killed other variants, absorbed several "Fighting" abilities, and merged them into one, thereby achieving the "Control" level.

  As for the "Corrosive Toxicity", "Combat Reflexes" and another unknown ability that reduces damage, these are three abilities where female variants excel, but have not surfaced yet. However, a "Fighting Control" is also good, allowing an ordinary New Human to become a close combat expert in one leap.

  However, it's not suitable for Muxuan to absorb that, as her evolution direction is not a close combat type. Having such an origin on her body initially didn't have much impact and was even beneficial in battles, but after advancing to the evolved realm, it would lead to some incoordination. Therefore, much earlier, Mushuo had reminded Muxuan to only absorb spiritual system abilities and minimize absorbing other abilities.

  At first, many new humans didn't understand the impact of their abilities on their future. They thought that simply increasing their abilities was a sign of strength, which led to a very difficult evolutionary path later on. However, it's because of this arduous process that the new world has experienced and knowledgeable new humans who understand the characteristics of all abilities, know how to combine them, and have a correct direction for cultivation.

  In the future new world, those newly born new humans, if they get guidance from a seasoned new human, will absolutely save several years of groping on the road to evolution. However, Mu Xiao is currently the only seasoned new human in this world, which means that the people around him will take many fewer detours and their evolutionary speed will definitely be several times faster than other new humans, and it can even be said that they will have a clear path ahead.

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