121: Fierce Battle with the Biochemical Beast; The Might of the Immortal-Slaying Sword Revealed

As the prompts from the Plane System appeared, the giant scorpion they had seen earlier climbed up from the underground fissure. Its ugly head turned toward them, and above its mouthparts, a cluster of cold, ghastly eyes fixed upon them.

"That's strange," Mutou wondered aloud. "We saw it just a moment ago; why didn't the Plane System give us a prompt then?"

Ludao Xuan adjusted his glasses and said, "Perhaps it hadn't yet broken free from the pyramid's suppression... That goblin ran off too quickly; we didn't even get to ask about this Scorpion Emperor's attack skills!"

Mutou nodded and was about to summon his sword, "Qingming," when he suddenly felt his heart pounding violently. A sharp, piercing pain erupted in his head, accompanied by a wave of nausea, as if a grave illness had struck him. He knew this was impossible; not only did he possess an immortal's constitution, but the various viral evolution serums he had ingested should have rendered him immune to all diseases.

Enduring the agony, he looked at his companions and saw that, except for Ludao Xuan, everyone was clutching their chests or heads, looking utterly miserable. Even the four lion-beasts were the same. "What is happening?" he asked in alarm.

Zigui managed to choke out, "I feel an energy attack... It's infrasound. That monster can use infrasound!" Zigui was wearing combat armor, which quickly identified the sonic assault.

Hearing this, the others realized that the Scorpion Emperor’s mouthparts were wide open as if it were roaring, yet not a sound was emitted. It possessed such a silent, stealthy attack skill. They finally understood why the previous two plane agents had perished; this silent assault was far more lethal than any tangible strike. One could be dead before even realizing what happened.

Although infrasound is a type of sound, it vibrates at a lower frequency than ordinary sound—less than 20 cycles per second. Because the vibration is so slow, the human ear cannot hear it. Yet, despite being inaudible, it is extremely harmful. Human internal organs and tissues are highly sensitive to infrasound and easily absorb its vibrational energy, causing them to oscillate violently. This leads to rapid heart palpitations, ruptured blood vessels, and eventually, heart paralysis, causing blood flow to cease and death to follow.

"Vacuum, slash!" Gufeng quickly forced himself to ignore the discomfort and attacked. Zigui also deployed two psychokinetic floating cannons to assist. The Scorpion Emperor’s pincers were harder than refined iron; seeing the attacks, it waved them to block, not even shifting its position.

However, this distraction prevented it from maintaining the infrasound. Shifting its body, the creature swung its thick, barbed tail at them. "Let me handle this!" Baldy shouted, leaping forward. He wrapped both arms around the tail, which was as thick as a pillar, and planted his feet, attempting to flip the Scorpion Emperor over.

But the Scorpion Emperor possessed immense strength. Instead, it pulled its tail back, dragging Baldy toward it, and opened its mouthparts as if to swallow him. The others were shocked and about to rush to his rescue when Baldy bellowed, "Beast God Transformation: Power of the Dragon King!"

Suddenly, the already tall Baldy seemed to grow even more massive, and dragon scales began to sprout across his arms and body. "Hah!" Baldy roared, pulling back so hard the Scorpion Emperor stumbled. He tried to tear the tail off, but the creature was the matriarch of the bioweapon beasts cultivated by the Anubis Chamber of Commerce in their early days, its body far tougher than any ordinary exotic beast. Baldy failed to sever the tail, but the Scorpion Emperor still felt a sharp pain, thrashing its tail to shake him off while exhaling a cloud of gas.

The group smelled a foul, fishy stench in the air. Immediately, their heads grew heavy, their bodies felt sluggish, and their strength drained away. Baldy’s "Beast God Transformation" dissipated instantly.

"Damn it! This Scorpion Emperor can spray poison!" Mutou was the first to notice. He held his breath, utilizing the "Fetal Respiration" technique of his cultivation path to switch to internal breathing, and unleashed a series of flying sword strikes.

But the Scorpion Emperor’s pincers were made of an unknown substance; even the cultivation-grade flying sword could not pierce its defense. It blocked Mutou's attacks and seized every opportunity to unleash infrasound or charge wildly, forcing the group into a desperate, chaotic retreat.

Zigui covered his mouth and nose, cursing, "This monster isn't even that powerful, but its skills are so insidious! Infrasound, poison—it caught us completely off guard. We can't even use a third of our strength... Damn it, if only we'd brought gas masks!"

At the mention of gas masks, a thought struck Mutou. They were vulnerable to poison, but robots were not! He attempted to activate his mental link to summon "Fearless No. 1."

However, upon activating the link, he realized this underwater space seemed to be shielded; he could not reach Fearless No. 1. This was astonishing, as Fearless No. 1 was a base-plane life form that could be summoned across different dimensions. He had never expected to be unable to summon it in this mysterious space at the bottom of the Earth's ocean.

The Scorpion Emperor was as large as a fighter jet, and the group could not overcome it through brute force. Zigui suddenly yelled, "Ludao Xuan, do something!"

The others were surrounding the Scorpion Emperor, using all their skills, but Ludao Xuan stood quietly to the side, seemingly unperturbed. Hearing Zigui's shout, he replied, "My attacks are primarily aimed at the souls of living creatures. I haven't heard of bioweapon beasts having souls!"

Zigui cried out, "The Scorpion Emperor isn't that strong! Brother Gu, your 'Shattering the Clouds' technique would definitely finish it!"

Gufeng rolled his eyes. "That's an SS-rank skill. Do you think it's cheap cabbage that I can use whenever I want? Besides, look at the size of this space; if I use that, we'll all be finished!"

"Damn it..." Zigui cursed. "Mutou, that sword formation of yours looks fierce, too! Why aren't you using it?"

Mutou replied, "Here? I'm afraid this space doesn't have enough Heaven and Earth spiritual energy!"

"Damn it all..." Zigui shouted. "My Tier-D armor has a filtration system, so I'm not afraid of its poison, but this stalemate won't last!"

Baldy suddenly said, "I have a way. Gufeng, pin it down!"

Gufeng knew what Baldy was planning. He drew a symbol in the air with his staff and pushed it toward the monster, shouting, "Space, Lock!"

The Scorpion Emperor, which had been attacking the four of them, was frozen by Gufeng’s runic seal, its waving pincers suspended in mid-air. Baldy flashed before the beast, his body glowing with a blinding, sun-like radiance that made it impossible to look at directly.

"Soul Extraction..." Baldy made a gesture in front of the Scorpion Emperor as if pulling something out, then crushed it with a sharp "crack!"

Mutou felt a surge of joy. He had seen Baldy use this move to easily resolve a mutated octopus monster on the spaceship, so he expected it to work here as well. But then, Gufeng roared, "Wait! It... watch out, it broke the seal!"

As he spoke, the scorpion's tail lashed out toward Baldy. Before they could intervene, a shadow flickered—Gufeng had used teleportation to block the blow. He held his staff upright with a grave expression, and a translucent, oval-shaped magic shield appeared before him.

The giant tail struck the shield, which wobbled and shattered like an eggshell. A flush rose to Gufeng’s face, and the ruby atop his staff shattered with a "pop!"

"S-rank!" was all Gufeng said before teleporting away with Baldy. Only then did Baldy grumble, "Damn... I forgot, that move only works on creatures below S-rank!" He looked at the thing he had crushed; it was a palm-sized, disgusting, strange insect he had seen inside the pyramid. The Scorpion Emperor had used it as a decoy to trick him!

As the two retreated, the Scorpion Emperor did not pursue. Instead, it stood upright and excreted countless transparent eggs from its tail. The group paused for a moment, only to see the eggs hatch into those disgusting insects, which shrieked and swarmed toward them and the lion-beasts.

Mutou was horrified, finally realizing the origin of the insects. Seeing that the Scorpion Emperor intended for its offspring to consume a life form and evolve into a Scorpion King to assist it, he knew he couldn't let it succeed. Without hesitation, he fired a "Particle Overload" strike at the Scorpion Emperor.

The Scorpion Emperor felt the power of the skill and shielded its front with its pincers. Though driven back, it remained uninjured, but the egg-laying process was interrupted.

However, hundreds of insects were already swarming toward them. Suddenly, a sound of Buddhist chanting rang out, and a blinding white light erupted from Baldy. It poured down like a tide, and none of the newly hatched insects escaped his A-rank skill, instantly turning to ash.

The Scorpion Emperor let out a silent, heaven-ward roar, and the group felt a wave of nausea as they were hit again by the infrasound. Seeing the group momentarily stunned, the Scorpion Emperor charged, waving its pincers, eager to avenge its offspring. But this time, it hit a wall. A golden light flashed before it, accompanied by an overwhelming, biting aura. The Scorpion Emperor instinctively tried to block with its pincers, but this time, it failed completely. The golden light struck with such titanic force that the pincer was shattered into pieces.

Struck by this heavy blow, the Scorpion Emperor retreated rapidly, guarding its body with its remaining pincer, spinning in place as if in unbearable agony.

The others realized that Mutou, seeing that prolonged combat was fruitless, had finally unleashed the Ancient Immortal-Slaying Sword. A supreme, frigid sword aura filled the space; how could an S-rank bioweapon beast possibly withstand it?

Seizing the opportunity, Mutou moved swiftly, raising his sword to sever the other pincer. But the Scorpion Emperor, having suffered a major loss, dared not provoke him further and retreated repeatedly. However, while it guarded its front, it left its rear exposed. Baldy grabbed its giant tail and roared, "Beast God Transformation: Power of the Dragon King!"

"Hah!" Baldy shouted, pulling and lifting the Scorpion Emperor until it was flipped onto its back. Mutou seized the chance and brought his sword down for a final strike...