The reticle in the center of the field of view suddenly turned red.

  The bullet spun out of the AK-47s muzzle and, under Tianxias excellent marksmanship, accurately hit a zombie right between the eyebrows.

  The zombies head burst open with a loud noise, and a flash of light emerged from the corpse, pouring into an energy slot in Tianxias mind.

  "Ding, host killed a level 1 zombie x1, gained 10 kilograms of Kylin."

  System kill sound effect plays.

  The heavenly steed does not stop in its tracks, taking aim at the zombies head and continuing to fire.

  The muzzle of the AK47 spewed out flames, and bullets flew out one after another, dropping several zombies to the ground.

  Although these zombies can only attack with their claws and teeth, they have an unusually strong vitality.

  Even if they are broken into four limbs, they will still struggle to pounce on their target.

  Only by destroying their skulls or spines can they be completely deprived of their combat effectiveness.

  This is the conclusion that Tianxia and others came to after they had just infiltrated this future research institute and were suddenly attacked by zombies, at the cost of several mercenaries lives.

  At the entrance of the laboratory, zombies still rushed in fearlessly.

  Hank raised his M249 machine gun and unleashed a fierce barrage of fire, shredding the zombies that charged forward into pieces.

  Other mercenaries also opened fire and shot at him.

  But including Tiān Xià, everyone is facing a severe problem:

  Their bullets... arent many!

  According to the superiors order, this mission is a stealthy one. In order to ensure concealment, it is impossible to carry more supplies.

  But after infiltrating, the crisis encountered by Tianxia and others is countless.

  Wave after wave of zombies came, not only did they pay a heavy price in casualties, but even the survivors like Tianxia were almost out of bullets and food.

  At present, the undead army is once again approaching in large numbers.

  Tianxia and the others managed to temporarily suppress the zombies attack with intense firepower, but at the cost of rapidly depleting their ammunition. Its estimated that in just a few more minutes, they will exhaust their last bullet.

  Suddenly, the zombies attack became even more ferocious.

  In the sunken eye sockets, the dark green light was even more luxuriant. At this moment, the zombie seemed like a ferocious beast that swallowed everything, and it actually charged into the laboratory under the firepower of Tianxia and others.

  Roar!

  A zombie let out a roar and immediately grabbed the broken table and chairs that had fallen to one side.

  The withered arms burst out with a brute force that was utterly disproportionate to them, and the table and chairs were fiercely thrown towards the sky.

  "Whats going on? Why have these zombies attacks suddenly become so fierce!"

  Tian Xia hastily dodged, but couldnt help letting out a cry of surprise.

  He looked at his other teammates and found that they were also caught off guard by the sudden attack of zombies, and they retreated to the depths of the laboratory in disarray.

  "Heavenly Thunder, Hand of Thunder Shield!"

  The captains voice, Raymond, came from the headphones.

  Tian Xia didnt hesitate and immediately took down all the hand grenades hanging from his waist, pulled the pins, and threw them into the crowded zombies.

  Boom! Boom! Boom!

  Hand grenades exploded, and a burst of flames instantly engulfed a large area of zombies.

  Shrapnel shot out of the flames like arrows, tearing apart a dozen or so zombies in an instant.

  "Ding, ding, ding......"

  The sound of gunfire echoed in his mind, and Tian Shao looked at the dense smoke at the door and couldnt help but let out a sigh of relief.

  Captain Raymond and the other mercenaries also showed a joyful expression, preparing to gather their troops and withdraw ahead of time before the zombies from other places arrived.

  Just as they were about to leave the laboratory, a crimson figure suddenly pounced on Tianxia and the others from the side.

  Caught off guard!

  The figure in red sped away like lightning, leaving Tian Xia and the others no chance to retreat!

  "Get out of the way!"

  The Tianxia dodges and quickly reminds his teammates.

  But still one step too late.

  A figure in red flashed by, the steel claws on his arm glinting with a cold light, and the sharp blade directly hacked onto the body of sniper Yan He.

  Suddenly, the swallow and crane flew out violently in reverse.

  His chest was slashed by the biochemical ghost with three deep and bloody wounds, even shattered white bones could be seen from the wounds, and he was already on his last breath!

  "Swan Goose!"

  The crowd gasped in shock as they saw the crimson figure raise its sharp claws once again, ready to deliver the final blow to Yan He.

  At the critical moment, Tianxia took a step forward with an arrow.

  Standard AK-47s do not have bayonets attached.

  Tian Xia suddenly swung the gun butt out and slammed it directly onto the ferocious face of the crimson figure.

  The scarlet figure let out a pained cry and stumbled backward two steps, while Tianxia and the others finally saw its true appearance:

  Only its upper body was completely exposed.

  The bright red muscle has no skin covering, chopstick-thick blood vessels are entrenched on the surface, and between contractions, they pump blood to the entire arm.

  Two arms are each equipped with three special alloy steel blades, and their sharpness is such that even a steel plate can be easily torn apart.

  In the center of his robust chest, a core that emitted blue light was inlaid, surrounded by patterns generated during energy transmission, making him tireless in battle.

  The lower body is equally robust, with a pair of muscular legs that leave no doubt about its speed.

  "Ding!"

  A crisp electronic sound echoed in Tian Shus mind.

  A detailed file suddenly appeared in his field of vision:

  Type: First-Order Biochemical Specter

  Introduction: The first-order zombie, through continuous devouring of its own kind, accumulates biochemical viruses and evolves, with significant improvements in blood volume, attack, defense, agility, endurance, and overall crushing of same-level zombies.

  Infectivity: Strong, after being scratched by it, mutation occurs within three hours to one day.

  Skill: Dash, condenses a green whirlwind in front of him, increasing movement speed to some extent.

  Weakness: Head

  Tian Shaos face was filled with astonishment.

  Memories of past lives emerged one after another, overlapping with the files in sight.

  He knew that this biochemical ghost and the zombies they had dealt with before were completely different levels of existence!

  Although momentarily stunned, Tianxia quickly entered combat mode.

  He tightly gripped the trigger, and the muzzle of the AK-47 shook violently, spewing out tongues of flame as bullets shot out like a tsunami, whizzing towards the biochemical ghosts.

  "Captain Raymond exclaimed in shock: What, what kind of monster is this?!"

  Although he didnt know as much about the Biochemical Ghosts as Tianxia did, he also realized that this was an extremely powerful enemy capable of taking down an entire team single-handedly!

  Sergeant Raymond and machine gunner Hank also opened fire, with the M16 and M249 firing out round after round of yellow-tipped bullets.

  However, bullets that can penetrate the bodies of zombies are hardly effective against biochemical ghosts.

  The red muscles are like refined steel forged by hammering.

  The bullets fired by the Tianxia people hit the surface, but instead of being repelled or lodging deep within, they let out a crisp sound and were stuck in the muscle, unable to penetrate further.

  "Damn it! Is this guy really that hard to deal with?"

  The sky was furious and scolded in one sentence, but he didnt dare to relax at all, afraid that the next second the undead would break through their firepower blockade and rush up to tear them apart.