"Kid, I've been watching you for a while. You picked 'Azure Emperor's Spirit-Devouring Art' on the first floor, and now you've chosen 'Ten-Zhang Golden Body.' With so many techniques in the Scripture Repository, why are you fixated on these two?"

"Is there a problem? Can't I choose them?"

The woman shook her head and pursed her lips.

"Suit yourself. Once you select a technique from the Scripture Repository, it can't be returned."

"I advise you to think it over; these two techniques are very difficult to practice..."

"Hey! Wait!"

After saying this, the woman turned and left, leaving Lin Heng feeling a bit baffled.

The system had already told him these two techniques were valuable. The difficulty of cultivation was expected and couldn't be dissuaded by a few words.

After collecting the two techniques, Lin Heng planned to leave.

He didn't intend to go to the fourth floor.

Everyone only has three chances to choose a technique, and he planned to save one as a backup.

Anyway, he could freely borrow them on regular days and would eventually find the best one.

"Yo! You picked pretty quickly. I thought you'd take a few more hours."

"What did you choose? Show me so I can register them for you."

Du Yan took out the register and placed it on the desk.

One 'Azure Emperor's Spirit-Devouring Art.'

One 'Ten-Zhang Golden Body.'

Seeing the names, Du Yan was stunned, a question mark practically floating above his head. "Seriously... why did you choose two techniques that are both incomplete and difficult to cultivate?"

"The Azure Emperor's Spirit-Devouring Art is somewhat manageable, but the Ten-Zhang Golden Body is not only abnormal but also a gold-eater."

A quick look at "pawread.com" will leave you more fulfilled.

"Do you all have to react like this? A kid just said the same thing."

"A kid?"

"Yeah... not very tall, about this height." Lin Heng gestured a height with his hand and continued, "Short hair, wearing a floral dress."

"......."

"The person you're talking about should be the manager of the Scripture Repository. Even if we combined our ages, we wouldn't match hers."

"She's the manager? Then what are you?"

"I'm just the administrator. The manager is equivalent to an elder rank; I'm just here to handle miscellaneous tasks."

Du Yan glanced around and whispered, "It's best not to discuss her here; her ears are sharp, and she might be watching your every move."

"Alright, alright, Brother Du, I'll head back now."

......

After leaving the Main Peak, Lin Heng returned directly to his residence.

He closed the courtyard door.

He emptied everything from the system space.

A bottle of fourth-grade Essence Stabilizing Pill, two techniques, and an ancient mirror.

Lin Heng fiddled with the mirror for a long time, but there was no reaction.

He then tossed it back into the system space, planning to study it later when he had more strength.

Next, he prepared to draw in the spiritual energy!

He went to the Heart Lake Pavilion on the westernmost side of Qianyun Peak, where the spiritual energy springs.

Above, brilliant ripples crisscrossed like a giant net, covering the entire mountain from this point.

At this moment, Lin Heng sat quietly in the center of the pavilion, his hair fluttering as he felt the spiritual energy surging from all directions.

But he didn't rush into action, closing his eyes as if waiting for the right moment.

Every character of the 'Azure Emperor's Spirit-Devouring Art' danced in his heart, needing no guidance or explanation, as if he were the creator of the technique.

Boom!

After a long time, with a collapsing sound, the white misty spiritual energy in the air began to change quietly.

They started to condense, no longer gaseous but gradually forming into strands of crystals, eventually dripping onto his body.

These were the purest spiritual essences, and Lin Heng hadn't expected the simplest gathering power of the Spirit-Devouring Art to be so powerful.

At this moment, the crystals around him were becoming denser, but even so, Lin Heng continued to wait.

Boom boom!

After a long time, until the crystals completely soaked him and were absorbed through his pores, he suddenly opened his eyes.

Now!

"Azure Emperor's Spirit-Devouring Art, gather!"

With the incantation, wisps of mist suddenly emerged from his body, precisely the spiritual energy that had just seeped in through his pores.

The moment they emerged, Lin Heng was dumbfounded.

What the heck?

He performed the incantation to gather and absorb spiritual energy, so why was he expelling the little spiritual energy he had just stored?

Did he get it wrong?

Strangely, the spiritual energy expelled from his body didn't dissipate into the air but instead gathered into a mass, hovering around him.

[Oh no! Could it be that this technique is really flawed!?]

Bang!

Just as Lin Heng was filled with doubt, in the blink of an eye, the spiritual energy hovering around him suddenly formed a pale cyan qi whirlpool, pulling the already condensed crystals in the air into it.

The massive whirlpool force almost instantly crushed the crystals, making them a part of itself, then, like leeches smelling blood, desperately burrowed into Lin Heng's body.

"Ah! Damn it!"

Damn, having such a huge qi whirlpool drilling into your body is like having an empty syringe injecting you.

Even if Ye Tian came today, he'd be shouting damn.

As the whirlpool mixed with crystals forcefully entered his body, Lin Heng couldn't help but tremble, his meridians bulging as if they were about to burst.

Clearly, as an ordinary person, he couldn't withstand such a vast amount of spiritual energy.

The intense pain almost made him faint, but his gaze remained resolute, gritting his teeth and shouting.

"Break the acupoint!"

Buzz!

With the sound, the spiritual energy swallowed into his body began to rampage, crashing through his meridians.

He spread his arms, palms facing up, and activated the technique.

If observed closely, the meridians along the center of his wrists gradually turned crimson, as if continuously burning his blood.

As the crimson mark extended to his heart, a faint light appeared.

It was a breakthrough acupoint.

Initially, the light was weak, but as the endless spiritual energy surged, it became more solid and bright.

Until it reached an extreme, the azure spring eye shimmered like a brilliant galaxy.

"Spirit Wheel, open!"

As the azure reached its peak, another cold shout came from Lin Heng's mouth.

A dull, obscure sound echoed from within, as if the brilliant light was about to extinguish.

But as he formed seals with his hands, the spring eye spun like a wheel, suddenly creating a suction force.

With the rotation, it began slowly absorbing the accumulated spiritual power in his meridians.

And it wasn't over; after absorbing the meridian's spiritual power, it even started actively drawing spiritual energy from the air.

Initially, the absorption was slow, taking an hour to absorb a single spiritual crystal.

By the third hour of the night, it only took five minutes to absorb a crystal, until it finally stopped drawing from the outside when it reached its peak azure.

The sun gradually rose high.

White specks of light sprinkled over the mountain top.

Lin Heng's eyes shone brightly without a trace of fatigue.

"Azure Emperor's Spirit-Devouring Art, minor success!"

No wonder this technique was abandoned on the second floor of the Scripture Repository. Although Lin Heng was an ordinary person, his comprehension was far ahead, barely understanding its content.

Coupled with the extraordinary pain, it's no wonder no one else could persist.

The cost of mistakes for ordinary people was too high; a slight error could damage their foundation.

The azure spring eye within him was called the 'Spirit Wheel!'

Each Spirit Wheel was like an energy reservoir, capable of absorbing, refining, and storing.

Its general process: converting spiritual energy into spiritual power within the body, then gathering the power at the spring eye to form True Essence.

Spiritual power and True Essence are interchangeable concepts, essentially the same thing.

Lin Heng clenched his fists, his cultivation already reaching the first level of Qi Refining.

But this was just the beginning. Lin Heng discovered that the Azure Emperor's Spirit-Devouring Art seemed to lack the function of continuously converting spiritual energy.

Since it opens 108 acupoints in the body to absorb spiritual energy, it should theoretically allow the Spirit Wheel to continuously absorb the spiritual energy of heaven and earth.

Instead of stopping when the Spirit Wheel's storage is full.

"That's right; it should be as I thought. This technique is missing its most crucial part. But how can I make the Spirit Wheel continuously operate?"

Lin Heng stood up, deep in thought.

If he solved this problem, it would be revolutionary.