More than a dozen evolutionary sources of power, like pure and clean energy, merged into Mu Shao's body. His entire blood vessels were activated, his cells' genes became extremely active and clear, his genetic blood vessels were being optimized, constantly resonating with his own frequency. But after several seconds, the wonderful feeling in his body gradually calmed down. However, he knew that his genetic blood vessels had been upgraded, at least eight times of genetic resonance.

  "If it were someone else, they would have at least leveled up more than ten times. It seems that my genetic bloodline is not ordinary, and evolution cannot be estimated according to common logic..."

  Apart from the Evolution Source, Mu Xi also obtained a small portion of pure original source. He used it all on his physique. Instantly, in the depths of his being, a tiny power merged into his muscles, but still not enough to break through the SSS-level physique required, just that little bit more boundary, he could break through the strongest human physique and reach the 'top' physique of the new humanity.

  Because he has an SSS-level physique at the critical point of breakthrough, and his physical strength is different from that of ordinary people, so the pure source also needs to be more. But as long as he gets through it, his body quality will take a big step forward, new changes will appear, and antibodies will also increase a lot, at least he won't get infected with low-level zombie virus.

  "Huh?"

  Mù Xiāo was about to retrieve the blood beads from the zombie's heart, but discovered that the deceased tenth-level muscular zombie had a cluster of slow-moving, seemingly living flesh and blood energy floating on its body.

  "Surprisingly, this big lump of a zombie with only ten genetic resonances dropped the source of 'Muscle Enhancement'." Mu Xiao's face showed a hint of joy, his palm touching that mass which seemed to be flesh and blood but was actually a concentrated essence of flesh and blood energy. It slowly seeped into his palm, a surge of bloody energy spreading from his arm throughout his entire body, bringing with it a warm and cozy feeling.

  But the feeling of being born was short-lived, and the power of blood and energy disappeared without a trace, as if it had been intercepted by some force. Mu Xiao was stunned for a moment, only to find that the source of that power had been completely absorbed into his sea of consciousness, as if with just one thought, this power had transformed into a primitive source, used to enhance the strength of his body or soul.

  "Th...!" Mu Xiao's face was full of surprise.

  If you can transform any ability source into what you need, it will accelerate the promotion of boundaries. After strengthening, there are many benefits. Moreover, other ability sources can also be transformed into the power of the original source, enhancing physical strength, which is another opportunity for rapid improvement!

  To know that not everyone can absorb multiple ability sources, if the ability sources conflict, it is highly likely to lead to genetic collapse and lose the correct evolution path.

  Muxiao basically confirmed that his consciousness sea is a "refining furnace" that can transform some abilities into their original state. Muxiao had never heard of it before, and it's extremely likely that this ability emerged after his rebirth, becoming his exclusive ability.

  "Legendary Golden Finger?" Mu Xiao teased himself, not denying his good mood, and continued to reinforce his physique.

  He didn't turn "muscle strengthening" into the original source, but directly used muscle strengthening to optimize his own muscles. The enhancement of the original source is comprehensive, and a small amount of source is scattered among bones, skin, tendons, blood... Muscles only account for a very small part, so there is no significant enhancement for muscles.

  "Muscle strengthening" is a targeted enhancement, naturally having the greatest effect on muscles, undoubtedly better for improving strength, rather than differentiating and going elsewhere.

  As expected, he absorbed a strong boost, and his physique was getting closer to breaking through, but the source of his promotion increased significantly. This is because his bloodline gene is not an ordinary new human bloodline gene, but a bloodline gene reorganized by the Miracle Formula, so it naturally requires a larger amount of source.

  "It's a pity that it was only ten times the genetic resonance muscle strengthening, if it were twenty or thirty times the muscle strengthening, who knows how much more it would have improved." Mu Xiao felt the surge of blood energy in his body again, quickly circulating throughout his entire body. His muscles had a certain degree of improvement and also alleviated the slight muscle fatigue from the previous battle. The blood energy quickly recovered to its peak state.

  Mù Xiāo also knew that the higher-level zombies were not so easy to deal with, and it might take a lot of effort to kill one.

  If the ten gene resonance zombies from just now were replaced with ten gene resonance variants, Mu Shao would have an even harder time killing them.

  After all, mutants and zombies are not on the same level, just like Mu Xiao and the zombie he killed earlier. At that time, he only had one or two gene resonances, but he was able to kill a muscle zombie with ten gene resonances. Different evolutionary directions represent different levels of strength, and mutants are no exception. As a more advanced evolutionary species than zombies, they have taken an extreme evolutionary path, so their abilities are naturally stronger than those of ordinary new humans, but their evolution is not as balanced or full of potential as that of the new humans.

  Actually, different degrees of variation monsters have differences in genetic strengths and weaknesses.

  Mu Xiao quickly and nimbly extracted over 30 blood beads from more than a dozen corpses using a knife, most of which were low-quality brown blood beads. However, there were ten ordinary crimson blood beads and three high-quality deep red blood beads among them.

  "The harvest is pretty good." Mu Xiao put away the blood beads and sat on a bloodless step, waiting for the next batch of zombies to arrive.

  In the dimly lit stairwell, over a dozen zombies lay on the ground with their foul-smelling black blood flowing everywhere. Mu Xiao looked like a demon sitting in the underworld, and if anyone were to see this scene now, they would surely be frightened out of their wits.

  Muxiao was very used to this kind of pungent bloody smell, the more than a dozen corpses in front of him that looked like a car accident scene, he didn't feel any nausea. Because the nauseating smell had become natural for everyone in that future era, those bloody scenes had also become a landscape, and naturally couldn't affect Muxiao's mood.

  The staircase, once again welcomed a wave of zombies, this time without any high-level zombies, all were around level 5 or 6, but the number was extremely large, at least twenty to thirty. Moreover, a group of zombies wore clothes that were not the black armor defense suits worn by security guards, but rather white lab coats, resembling doctors or researchers.

  Mu Xiao wielded his knife like a scythe, cutting down the zombies' heads like harvesting wheat. He punched through their hearts with a heavy fist, directly bursting them open.

  Black blood splattered, heads shattered, one by one the zombies fell down.

  The blade flashed coldly and slashed off the zombie's neck, its head falling off.

  Flickering fist lines, every punch that approached the zombie's heart created a dent, and the internal organs had already become a mess of minced meat. Mu Xiao killed emotionlessly, his entire body splattered with stinky blood, his face also covered in black spots, but his movements didn't slow down at all, instead becoming faster and faster, just like a machine that didn't know fatigue, simply and quickly killing with one hit!

  The fifth floor... the eighth floor...... Each zombie was stacked on top of each other, layer upon layer of corpses, the entire staircase reeked of a pungent stench, black blood flowing like a small river.

  The smell of blood stimulated the zombies' appetite, and their attacks became more frantic. Mu Shuo's black armor defense suit was damaged in several places, with some zombies' sharp claws tearing through the soft steel lining and scratching Mu Shuo's skin, but the damage was not severe and did not affect his ability to fight.

  With his SSS-level physique, as long as the battle stopped, he could handle these minor injuries by simply mobilizing his body's blood and energy.

  However, it seems that the more zombies are killed now, the more they multiply. Originally there were only twenty or thirty zombies, but after Mu Xiao killed over ten of them, suddenly more than twenty zombies joined in. Clearly, the stench in the stairwell grew stronger and stronger, spreading throughout the entire lawyer's building, attracting the appetite of all the zombies.

  But the more Mu Xiao kills, the faster his genetic evolution resonates. He has now reached 10 times evolution degree, but the next zombie level is too low, and the evolutionary power source loses its effect, that is, the higher the level, the lower the experience value of hitting low-level monsters, and the character no longer gains experience points.

  Among them, the original source of consciousness that absorbs and purifies has also slowed down. Apparently, the number of resonances is too many, and the refined energy is not enough to supply the body and soul, only playing a negligible role, unless it is a more powerful variant monster.

  Musha drew in all the pure source springs, his strength increased by a tiny margin, most importantly, he could slow down the intense muscle bursts, allowing him to maintain a consistent one-hit kill. If not, maintaining a high killing speed would be easy to let the zombies below rush up.

  "There are at least over sixty zombies now, and the number is still increasing. This doesn't look good...” Mu Xiao's spiritual power swept out, detecting the number of zombies, among which there were five or six zombies with tenfold evolution degree, with unknown enhanced abilities. If those few special zombies were to attack him together, the battle wouldn't be easy, and he couldn't guarantee a one-hit kill.

  The wooden door burst open, and a fierce gust of wind and rain suddenly attacked, blowing up the heads or hearts of three zombies in front. Taking advantage of the few zombies behind him not having pounced yet, he swiftly moved his body and retreated back to the stairwell of the fourth floor's hidden door. He quickly pulled out a C-grade high-explosive grenade from the backpack on the ground.

  Lift up the protective cover, pull the insurance line, throw it upwards, and draw a beautiful parabola in the air, accurately falling into the center of the zombie pile.

  Mu Xiao didn't look back or pick up anything, quickly opening the hidden door and entering a normal room on the fourth floor.

  Rumble!

  A loud noise echoed through the law firm's building, causing the entire building to shake slightly.

  Mu Xi's spiritual power sensed danger, and he opened the door to return to the stairwell. As expected, one zombie rushed over and was stabbed in the head with a knife, while another zombie that was rushing over was kicked to the ground. A pungent smell of charred flesh wafted through the air, making Mu Xi feel even more nauseous. The black smoke filling the stairwell also contained the virus.

  Mu Xiaoqiang endured the unbearable smell, cleared out a few attacking zombies, saw a large fire burning in the zombie heap, a large number of zombies were blown to pieces, including five or six level 10 zombies that were killed and two seriously injured.

  It was mainly a large group of zombies in the stairwell, extremely crowded, and the damage of high-explosive grenades naturally played to its maximum. Moreover, one high-explosive grenade would not destroy the floor, because most of the zombies withstood the damage, minimizing the destruction of the floor. So, Mu Xiao did not hesitate to use a high-explosive grenade, striking fiercely.

  More than sixty zombies were blown up, about half of them died, and some of them caught fire on their bodies. Soon, flames also erupted from the bodies of some zombies. Mu Xiao absorbed the evolutionary source and extra spiritual energy from the dead zombies while continuing to clear the zombies in the stairwell.

  Generally, external objects are used to kill monsters. The evolution source spring is determined by breath to determine who killed it, and the evolution source spring will automatically merge into the other party's body.

  If you want to grab the monster, just leave more damage, and the more you divide the monster's evolution source, the more you will get.

  To put it simply, each person's attack has a unique spiritual aura, and the source of evolution will be allocated according to the strength or weakness of the aura.

  However, there was no one to compete with Mu Xiao for the monster, and a high-explosive grenade came down, which basically accelerated the pace of killing zombies. After a moment, he quickly cleaned up the remaining situation, and the residual flames on the ground were also extinguished, and temporarily there were no more zombies coming over from the stairs.