Source of flexibility and strength.

  Repeated strengthening of physical flexibility can promote blood circulation, enhance muscle explosiveness, increase body flexibility, facilitate smooth footwork and body movement, accelerate striking speed, etc. For example, the temporary control of muscle bleeding by the mutated cat is a basic effect.

  Musha killed the variant cat, absorbing the 'Evolution Source Spring', directly increasing two genetic resonances. Additionally, it obtained an extra energy of a pure source spring and also got the 'Flexible Strengthening' source spring. With the original source spring extracted from the variant cat's body, it is likely to push the physical quality to the verge of breakthrough, or even directly break through the old human physique.

  "It's true that the stronger the monster, the richer the harvest. But with the mental energy I used in that last battle, my body's food energy has been completely depleted." Mu Xiao felt his flesh and cells were filled with hunger, and he couldn't help but have the urge to devour any flesh.

  Even the corpse of that blood-stained mutant cat would have been devoured raw.

  However, Mu Xiao only retained a few points of sanity and did not make any moves that would scare himself. He also didn't go to absorb the source of 'Flexible Reinforcement' first, but instead rummaged through his backpack for stacks of dried meat and several nutrient solutions, and started devouring them with gusto.

  "After a battle, I need to replenish my food, or else I'll become a foodie?" Mu Xiao chewed on the flavorful dried meat, thinking that his physical strength was only barely qualified for using the characteristic of mental power. If he had used mental power directly instead of spiritual power earlier, his hunger might have increased several times over."

  He ate the food in his backpack, and his body recovered from hunger, but he didn't feel full either, just a normal state of not being hungry or full.

  Just now he was eating while absorbing the 'Flexibility Enhancement' spring, and at the same time strengthening all the springs to enhance his physique.

  Muscles become flexible and strengthened, with a kind of elasticity that is both loose and tight, containing a powerful force that surpasses previous muscle agility and explosive power, even to the point of suddenly bulging out several blocks of muscles full of explosive force, concentrating one's strength for a heavy blow.

  However, the strengthening of physical flexibility is also a physique system, which has given the physique experience points in disguise. Under the double-source enhancement, the physique has strengthened by more than one level, and it's still just a line away from breaking through an old physique and welcoming the intensity power of a new physique.

  In fact, the combat power of the variant cat is not just that, but it encountered Mu Xiao, who has an intangible "mind force", so the agility and cleverness of the variant cat cannot be exerted, all being constrained and restrained by the intangible mind force, thus dying under Mu Xiao's mind force.

  However, if you encounter someone with strong combat awareness or extremely keen spiritual power, the thought force may not be invisible, as the opponent can sense the fluctuations of the thought force in the air and dodge or counterattack.

  However, Muxiao had seen such a strong fighter before, where the opponent directly exhausted the person using mental power to death, and some were even killed in close combat. Spiritual power is the nemesis of this intangible ability, but it must be stronger than the opponent's spiritual power in advance to sense the changes in the air and where the danger comes from. Of course, Muxiao cultivating "Intentional Divine Power" was a different story.

  There is a part of the mutant beast's flesh that is non-toxic and highly nutritious. Long-term consumption can help strengthen the body's blood and energy, enhance bone density and muscle strength, thereby achieving overall physical enhancement.

  Cut off the fine meat of the prey, Mu Xiao had done it countless times before, and with a few strokes, he dismembered the variant cat's limbs, taking out more than 20 high-quality blood beads, while cutting off more than 30 pieces of fine meat of varying sizes.

  "Dinner has good ingredients." Mu Xiao was very satisfied to find a iron box with fine meat, which contained rich nutrients and would not spoil even after a long time. Then, Mu Xiao also picked up more than 20 high-quality blood pearls and continued to explore downwards with his luggage.

  Soon after, Mu Xiao discovered an armory and an intelligence room in a secret chamber on the second floor.

  Most of the armory is stocked with C-grade stun batons, C-grade heat knives, C-grade high-explosive grenades, a small number of B-grade laser guns, B-grade high-vibration electromagnetic knives, B-grade cluster bombs, and A-grade railguns. The rest are neatly arranged sets of black armor defensive suits.

  Apart from weapons, there are also crates of energy blocks below grade B, but the Earth Situation Machine is completely paralyzed and cannot be repaired for the time being, so even if there are energy blocks, they are useless.

  Mù Xiāo didn't take many weapons, just a whole backpack of hand grenades and left the armory. As for that intelligence room, he didn't go to check it out, it was all files inside, even if there were some earth-shattering secrets, it wouldn't be enough for the moon to use the earth as an experimental site, what a big deal?

  And such earth-shattering, inhumane intelligence would never be kept within this intelligence agency. If it truly existed, it would definitely be leaked by someone with ulterior motives and trigger intense resistance from humanity worldwide. Even the staff at a law firm wouldn't die in such large numbers.

  Of course, the intelligence room still has some use value. It may find other secret institutions of the Federation and obtain the legacy left by these institutions, just like this lawyer's building. But now is not the time for excavation, Mu Xiao temporarily does not deal with it, and waits until the smooth receipt of this lawyer's building to carefully understand the intelligence content inside.

  Mu Xiao ignored the intelligence room on the first floor and found the door leading to the underground layer.

  Opening the metal gate, a staircase leading underground appeared. Mu Xiao went downstairs and soon entered a crystal corridor like metal, which gave off an icy cold feeling due to the loss of electric lighting.

  Mù Xiāo's body had already surpassed that of an ordinary person by a great deal, but his eyes still didn't have the ability to see in the dark like it was daytime. He could only barely make out objects in the dim light, and not be completely blind. Moreover, he had spiritual power for detection, just like his eyes, which allowed him to clearly perceive what existed around him.

  He walked in about 70 or 80 meters and found that there were rooms on both sides. After probing with his spiritual power, he didn't find any danger or anything special.

  "It turned out that both were rest rooms." Mu Xiao could tell from the furnishings and daily necessities in the room that the people living inside should be long-term underground workers, not secret personnel who appear on the lawyer's floor.

  Musha quickly found all the food in the room and took it away, leaving nothing behind. Except for five or six ordinary weapons, there was nothing of value left.

  Soon after, he found another room in the corridor, which was several times larger than the previous two rooms.

  With a sweep of his spiritual power, Mu Xiao immediately understood that this room was filled with a large number of machines. He walked in and saw that they were all high-performance intelligent computers, but they had all fallen into a state of paralysis.

  "This should be the lawyer's office surveillance room or control room?" Mu Xiao concluded after examining the equipment, "If these devices can be repaired, the lawyer's office probably has a good defense system."

  Musha felt that his next step should be to find the ability of 'mechanical grasp', so that he could set up a safe residence.

  Mu Xi found quite a few weapons in this control room, but they can't be used now and can only be put back temporarily.

  The first underground floor has been fully explored. However, at the end of the corridor, there is still a door that appears to be the entrance to the next lower level.

  Mu Xiao didn't hesitate and continued to explore downwards.

  As soon as the door was opened, a black shadow moved in the stairwell. Mu Xiao released his spirit to investigate and found that there were three or four zombies wandering inside. The clothes these zombies wore were different from those of the guards, but rather deep blue work uniforms, similar to those worn by mechanical maintenance personnel.

  Muxiao didn't even bother to get close, directly using his mind power to control the military knife, like a sharp arrow leaving a black line mark, one knife after another stabbed through several zombies' heads. Muxiao quickly solved several low-level zombies, recalled the military knife, and then used his mind power to extract a few blood beads from the corpses, but the experience gained was negligible.

  "I don't know if there are any more zombies below." Mu Xiao thought that all the zombies in the entire lawyer's building had been attracted to the fourth floor, but unexpectedly, there were still a few fish that had slipped through the net.

  Falling into the underground second floor, Mu Xiao also found three rest rooms and picked up all edible things.

  In an instant, he arrived at a large room of over 300 square meters, and was shocked to find all sorts of large mechanical equipment inside. In the center, a small mecha connected with countless wires was placed.

  Small mecha is armor equipped on the human body, more flexible and agile than large mechs. Wearing small mecha is almost an iron man, if the mecha has a weapon, it can match a new human with heterozygous ability.

  In the previous era of evolution where Mu Xi was, many new humans liked to fight with small mechs or large mechanical bodies, and some mechs or mechanical bodies had abilities that were not much different from psychic powers, such as self-shielding, scanning, sensing, detecting, etc.

  It's just the energy of mechanical armor and machinery, which is not something ordinary people can afford to consume.

  "It's actually a small mecha! And it seems to be S-level quality, fifth-generation...". Mu Xiao's face couldn't hide his delight.

  Mechanical armor and mechanical body of this kind of sharp armed are generally above S-level, the difference in machine species is on the numbering, the larger the number, the more times the machine species has been fully optimized.

  The current mech is numbered: UC-S005.

  "UC represents the model, and the back represents the fifth generation of S-class machines."

  But as Mu Xiao walked closer, her joy was quickly extinguished.

  It turned out that this set of small mecha was only a semi-finished product, to put it simply, it was still in the optimization process and could not be used at all, unless Mu Xiao had a large amount of 'mechanical' wisdom to evolve into ability, he could continue to take over the final optimization work of this semi-finished mecha.

  "Weapons and mechs that can't be used, it's really frustrating!" Mu Xiao turned his head away in annoyance, not wanting to look at them anymore, and continued searching for valuable items in the room. The room had many metal parts and mechanical components, as well as a number of high-grade energy blocks. In addition, there was also a cabinet full of weapons, all of which were intended to be equipped with that half-finished mech suit.

  Musha found a fire-starting chemical from a pile of raw materials, which would produce high temperatures upon contact with liquids, even melting metal, a hazardous product.

  "Ah, just right for cleaning up the corpses." Mu Xiao picked up two or three bottles and prepared to head back to the fourth floor stairwell to incinerate that pile of gruesome corpses.

  Mushuo left the large room on the second underground floor and walked to the end of the corridor, only to find another metal gate.

  However, this metal gate is somewhat different from the previous two metal gates. The metal material is extremely hard and thick, and spiritual energy cannot penetrate it. Moreover, there are also intricate optical brain systems on its surface. Unfortunately, all optical brains have lost their use now, so no matter how precise this metal gate is, it's just a relatively hard and solid gate.