133. Battle Against the Yin Spirits

"Hum..."

Chen Fengyun was naturally unfazed by the surrounding Yin energy. However, since he could not absorb and convert ordinary Yin energy into attribute points, he activated the Profound Yin Mirror in his hand. With a low hum, the mirror acted like a whale swallowing water, drawing all the incoming Yin energy into itself.

"Roar..."

Directly above, a massive stone coffin, nearly two meters high, sat open without a lid. From within came deep, guttural roars, and a dense, pitch-black Yin energy gathered inside, as if it contained a sinister, otherworldly realm.

Just as Chen Fengyun turned his gaze toward the coffin, a giant, furry green hand gripped the edge, and a figure pulled itself up from within.

"Roar..."

Chen Fengyun looked on as a Yin demon, over two meters tall, crawled out. It was impossible to tell if it had been male or female in life, as its entire body was covered in foot-long green hair. It emanated a green glow, and its footsteps produced a metallic clanging sound as it hit the ground.

"As expected, a Yin demon on the verge of gaining sentience. Its strength is likely equivalent to a peak Qi Refining cultivator. Plus, its body is impervious to blades and bullets, and it possesses immense strength. I wonder if my flying sword can harm it?"

Chen Fengyun assessed the creature's strength. He had no desire to engage it recklessly without certainty; being injured or corrupted by Yin energy would be troublesome.

"If my Earth Dragon finishes its evolution, it should be able to contend with this Yin demon. However, I am confident I can eliminate it myself. The most important thing is that the Cultivation System can absorb the vast energy within it."

Facing the Yin demon, Chen Fengyun remained composed, bolstered by the formidable power of his Cultivation System.

"Let's first test its defense, strength, and speed." With that thought, he commanded his flying sword to dart toward the Yin demon while keeping the Profound Yin Mirror constantly absorbing the surrounding Yin energy.

"Clang..."

"Roar..."

The Yin demon swiped its arm, batting the flying sword away. However, it let out a roar as Chen Fengyun noticed a wound where the blade had struck, from which green liquid oozed.

"It seems the flying sword can indeed injure it. Next, I should test the power of the 'Sutra of Salvation' and the six-syllable mantra." These Buddhist arts were his greatest trump cards against such entities.

"Om Mani Padme Hum."

Combining the Sutra of Salvation with the six-syllable mantra, Chen Fengyun formed the mudra and chanted. Instantly, a brilliant radiance erupted from him, and a wave of golden light surged toward the Yin demon.

"Roar..."

The Yin demon let out a shrill cry. As the golden light of the Buddhist art touched its body, it sizzled, and its green fur and flesh began to corrode under the illumination.

However, the creature retreated, pressing its back against the stone coffin. Immediately, a massive surge of thick Yin energy poured from the coffin into the demon, helping it resist the Buddhist power and regenerate its wounds.

"It seems that to destroy this Yin demon, I must first disable this burial site so it has no source of replenishment; otherwise, it will be a real nuisance." Chen Fengyun flashed to the side, circling to the other end of the coffin, and reached out to press his hand against its edge.

"Hiss..."

An intensely frigid energy instantly invaded his body, bypassing even his spiritual shield. Despite his "Indestructible Vajra Body," Chen Fengyun could not help but shiver.

Fortunately, it lasted only a moment before the Cultivation System vibrated violently, beginning to absorb the freezing energy and convert it into attribute points.

"Excellent." Chen Fengyun was overjoyed. He continued to manipulate his flying sword to strike the demon, while simultaneously unleashing Buddhist arts and draining the Yin energy from the burial site.

"Roar..."

The Yin demon seemed to sense the loss of its Yin energy and, suffering from the constant attacks of the sword and Buddhist light, roared repeatedly. It reached out toward Chen Fengyun from across the coffin.

Although separated by the stone coffin, the demon’s body appeared malleable; its arm stretched over a meter long, its fingers tipped with razor-sharp, foot-long nails, plunging toward Chen Fengyun’s face.

"Clang..."

Chen Fengyun tilted his head slightly, recalled his flying sword to parry the strike, and sliced off one of the sharp nails. The demon roared and retracted its arm.

"Roar..."

The Yin demon did not give up. It suddenly opened its mouth and spewed a cloud of green mist, radiating a cold, baleful energy far more concentrated than that within the coffin.

"Hum..."

Chen Fengyun dared not let the baleful breath touch him, so he tossed the Profound Yin Mirror in front of him. As expected, as the baleful mist neared the mirror, it was completely absorbed.

"Heh, heh, heh. Upgrading the Profound Yin Mirror requires not only forging materials but also vast amounts of Profound Yin energy. This should be enough." Chen Fengyun was delighted. He had long considered upgrading the mirror after the sword's upgrade, but had lacked sufficient energy.

"Whoosh, whoosh, whoosh..."

The flying sword crisscrossed the ancient tomb, continuously wounding the Yin demon, while the golden light of the Buddhist arts eroded its vitality. With the vast majority of its Yin energy drained by Chen Fengyun, the demon could no longer regenerate, and it finally began to panic.

"Roar..."

With a final roar, the Yin demon unexpectedly smashed through the stone coffin, revealing a hidden tunnel beneath, and leaped down to flee.

Chen Fengyun’s eyes flickered. He sent his divine sense following the tunnel and discovered it led deep underground. The demon was already a kilometer away. He commanded his sword to destroy everything in the tomb before leaping into the hole to give chase.

"Only twelve attribute points from that Yin energy? That’s nowhere near enough. I must capture the demon and absorb its baleful energy; that should yield much more."

Chen Fengyun glanced at his system panel, dissatisfied with the small gain, and sped up his pursuit, his flying sword launching long-range attacks at the fleeing demon.

Before long, he discovered an underground lava cavern ahead, rich with terrestrial ley line energy. An idea struck him, and he channeled the ley line energy to entangle the demon.

"Roar..."

The Yin demon struggled violently, but as Chen Fengyun drew more and more ley line energy, it formed invisible chains that wrapped around the creature from all directions.

Finally, the Yin demon collapsed to the ground. Chen Fengyun controlled his sword to sever its arms, approached it, and placed his hand on its shoulder. A massive, concentrated wave of baleful energy flooded into him.

The Cultivation System was ready and immediately began converting the energy. Watching the attribute points climb rapidly on his panel, Chen Fengyun beamed with joy.