The spiritual energy was restored, and he became a mortal immortal in two days.

modern.

Location: Lingxiao Headquarters, 3,000 meters underground, top-secret heavenly prison.

The air was filled with the pungent smell of a mixture of disinfectant and some kind of energy-inhibiting liquid.

The walls, floor, and ceiling were all made of a silver-white alloy, covered with dense, light blue runes that resembled circuit boards.

These runes flowed silently, emanating a chilling sense of oppression, completely severing the connection between this place and the spiritual energy of the outside world.

This is the place where Lingxiao imprisons the most dangerous "beings".

Those ancient demons and powerful figures who, during the wave of spiritual revival, either possessed, awakened, or reincarnated.

Many of them were once the nightmare of a certain era, capable of overturning mountains and rivers with a wave of their hand.

But now, in this prison that is infused with the essence of modern technology and ancient runic arrays, they are no different from ordinary people, and are even more vulnerable.

"Da.......Da.......Da......."

The steady footsteps echoed in the empty, cold corridor.

A middle-aged man wearing a white coat and gold-rimmed glasses walked in.

He had a refined appearance, his hair was neatly combed, and he carried a uniquely shaped hand lantern in his hand.

The lamp's outer casing is made of some kind of matte metal, and inside the lampshade is not a light bulb, but a constantly rotating energy ball that emits a soft white light.

Wherever the light reached, the tiny particles of spiritual energy remaining in the air seemed to be frozen and dispersed.

Dr. Wang Mingyuan, head of the Lingxiao Research Institute.

A maverick who combines modern cutting-edge physics and quantum theory with ancient formations and rune restrictions in his research, he is also one of the main designers of this heavenly prison.

Behind him followed two silent, black-clad special agents, their auras deep and their eyes sharp as eagles. They wore weapons of a special material at their waists, clearly elites who had undergone rigorous training and were specifically tasked with dealing with cultivators.

The three stopped in front of a door at the end of the corridor. The door blended seamlessly with the surrounding silver-white walls, and only when Dr. Wang approached did a ring of complex authentication runes appear on the door.

Dr. Wang extended his right hand and pressed it against the center of the rune. A faint light swept across his fingerprints, iris, and even his soul fluctuations.

"Authentication successful. Privilege level: S."

A cold, electronic synthesized sound rang out.

The heavy alloy doors slid open silently to the sides, revealing the cramped cells inside.

The cell was no more than ten square meters, with runes engraved on all four walls. In the center was a transparent cylindrical container filled with a pale blue liquid.

A naked, emaciated figure floated in the liquid, eyes closed, with tiny tubes inserted into its body, connected to various monitoring instruments on the outer wall of the container.

The man's face still faintly revealed a touch of effeminate beauty, but at this moment he was deathly pale, his lips were cracked, and his eyes were sunken.

Most strikingly, there was a faint, distorted black mark between his eyebrows, resembling a broken rune or a closed demonic eye.

He is the reincarnation of Yin Jiuyou, the Thousand-Faced Demon Lord!

Unfortunately, his luck seemed to be not so good; he had just recovered a little bit of his demonic cultivation.

Before it could cause any trouble, it was detected by Lingxiao's monitoring network as having abnormal energy fluctuations. It was then captured by an elite team and imprisoned in this dark and desolate place.

Dr. Wang walked to the container and calmly gazed at the human figure inside, which resembled a specimen, through the transparent cover.

He raised his hand and pressed a few buttons on an operating panel on the outer wall of the container.

"Sizzle..."

The pale blue liquid in the container began to drop and soon reached the bottom.

The tiny tubes automatically detached and were retracted. Losing the buoyancy of the liquid, the figure inside crashed to the bottom of the container with a "plop," letting out a painful groan, and slowly opened its eyes.

What kind of eyes were those?

It was murky and deathly still, yet deep within it lurked an indelible resentment and malevolence, as if it came from the deepest hell.

Even with his cultivation suppressed to almost nothing and his physical body extremely weak, those eyes could still send chills down one's spine.

"Ha...it's you again...Dr. Wang..."

Yin Jiuyou's voice was as hoarse as sandpaper.

He struggled to sit up, leaning against the cold wall of the container, a mocking smile tugging at the corners of his mouth. "This time... what kind of 'ancient secrets' are you trying to extract from me this time?"

"Do you still want to continue... researching my 'precious' demonic body?"

His tone was full of sarcasm and resentment.

Once a powerful Nascent Soul Demon Lord, he has now been reduced to a lab rat. Such a fall from grace is enough to break any proud and arrogant person.

But Yin Jiuyou did not. The sinister and insane glint in the depths of his eyes never faded; it was a kind of obsession etched into the very essence of his soul.

Dr. Wang remained unmoved by his mockery, his expression unchanged.

He raised the suppressing lamp in his hand, and its light completely enveloped Yin Jiuyou.

Under this light, Yin Jiuyou's body trembled slightly, and the black mark between his eyebrows seemed to fade a little more. His face showed obvious pain and disgust.

"We won't ask about secrets or do any research today."

Dr. Wang's voice was calm and clear, carrying the composure characteristic of a scientific researcher: "I'm only asking you."

He took out a thin, paper-like electronic tablet from the pocket of his white coat.

With a light tap of the fingertip, a clear holographic image is projected onto the tablet.

The photo shows a young man who looks to be in his early twenties, dressed in simple casual clothes, standing by a lake in a park, his face turned to the side, seemingly looking at the scenery in the distance.

He had a handsome face, calm eyes, and an ordinary demeanor, like any college student you might see anywhere.

It was Chen Xuan.

Do you know this person?

Dr. Wang turned the tablet screen towards Yin Jiuyou, his gaze fixed on his eyes and every subtle change in his facial expression.

At the same time, the two black-clad special agents behind him also quietly adjusted their positions, placing their hands on the weapons at their waists, and the atmosphere instantly became tense.

Yin Jiuyou narrowed her eyes and carefully examined Chen Xuan in the photo.

One second, two seconds, three seconds...

His brows furrowed slightly, and a hint of confusion flashed in his eyes, followed by doubt, and finally turned into undisguised contempt and impatience.

"this one?"

Yin Jiuyou chuckled, his voice even hoarser, "A greenhorn? He doesn't even have a decent amount of spiritual energy fluctuations."

"Dr. Wang, your Lingxiao sect is getting worse and worse. Unable to catch any big fish, you resort to making fun of these nobodies?"

His reaction was natural; it was a heartfelt contempt and disdain for the weak.

It doesn't seem like an act at all.

Dr. Wang narrowed his eyes slightly behind his glasses and did not speak immediately.

He carefully observed Yin Jiuyou's micro-expressions, pupil changes, and even soul fluctuations.

A few seconds later, he confirmed that Yin Jiuyou was not lying.

He genuinely didn't recognize the person in the photo, or rather, he didn't think the person was anything noteworthy.

"He had another name, or rather, a name he may have used."

Dr. Wang spoke slowly, gradually slowing his pace and emphasizing each word: "Chen—Prime Minister."

The moment the words "Prime Minister Chen" were uttered, Dr. Wang keenly noticed that Yin Jiuyou's body stiffened almost imperceptibly for a split second!

It wasn't excitement, nor fear, but a very subtle feeling, as if it touched upon a taboo word buried deep in the soul, almost forgotten.

But this anomaly lasted for less than a fraction of a second, as fast as an illusion.

Immediately, Yin Jiuyou's face revealed an even more exaggerated mocking expression. He even laughed out loud, although the laughter aggravated his weak body and caused him to cough violently.

"Ahem... He's Prime Minister Chen? Hahaha, you think just any Tom, Dick, or Harry could become him?"

He was panting, his eyes full of mockery. "Dr. Wang, did you guys just pick up some random, worthless legend from some cheap online novel and start treating it like a treasure?"

Dr. Wang looked at him silently, swiping his finger across the tablet to bring up several other documents.