Originally, it was only an ordinary domain comparable to a Grandmaster Domain. But as Lin Zheyu's physique and spirit continued to improve, the Perception Domain grew increasingly powerful, gradually surpassing the scope of martial cultivation.

The latent potential of the Perception Domain is somewhat beyond imagination. If it continues to evolve, it may, in certain aspects, not be inferior to an immortal cultivator's spiritual sense.

His Perception Domain was quite extraordinary. It was a product of martial cultivation at a profound level, where strengthening the spirit and soul in turn nourished the physique. To cultivate such a domain required both a powerful body and a strong soul. There may be other influencing factors, but without sufficient data or reference, Lin Zheyu has not yet fully understood them.

However, Lin Zheyu had his own suspicions. His ability to develop the Perception Domain might be linked to the terrifyingly solid foundation he built in the Blood Qi realm, as well as the transformation of his body after condensing golden blood qi. Aside from himself, he had never seen any similar records in ancient texts or fragmented manuals. Of course, this was only his personal speculation.

"Maintaining the Perception Domain consumes almost no energy for me, and I can activate or deactivate it at will. I wonder if powerful immortal cultivators can detect its existence." Lin Zheyu felt a hint of curiosity.

His Perception Domain was more like a living being's natural talent, formed through the fusion of heightened perception and a biological field. This unique domain was neither true origin, nor spirit power, nor spirit force. Lin Zheyu had tested it. Grandmaster realm martial artists could not detect it at all. As for whether immortal cultivators could, he did not know.

[Heaven Rewards the Diligent]

[Name: Lin Zheyu]

[Origin Force: 12]

[Skills: Phantom Flash Soul-Chasing Steps (Third Stage: 89%), Sacred Evolution Spirit Nurturing Art (Second Stage: 100%), Primordial Wuji True Technique (Third Stage: 59%)]

Lin Zheyu looked at the data within his consciousness. After this period of consumption and growth, only 12 units of Origin Force remained.

The potential of the Sacred Evolution Spirit Nurturing Art is almost exhausted for now. After forming a spiritual form, continuing to cultivate it no longer brings significant improvement.

The Sacred Evolution Spirit Nurturing Art was closely tied to both physical strength and the strength of true origin. The stronger the physique, the better it could nurture the soul, increasing its overall magnitude. The stronger the true origin, the better it refined the soul, reducing impurities and enhancing its strength. Perhaps once the soul reached a certain level, the technique would lose its effectiveness. For now, however, Lin Zheyu could not yet see its limit.

"I will use the remaining Origin Force to improve the Primordial Wuji True Technique. It is time to push it to the peak of the Force Transformation realm. No, to the peak of the Grandmaster realm... At my current level, such distinctions hardly matter. Even breaking through to the Martial Innate realm would only take a single thought." Lin Zheyu smiled.

With his current spiritual strength, he could already sense the location of the Bridge of Heaven and Earth within his body. This so-called bridge overlapped with the Ren and Du meridians, yet was not the same as them. It existed deep within the flesh and cells, in a mysterious and intangible space. Only when the spirit and soul reached a certain level of strength could its presence be perceived.

This location served as a bridge between the human body and the external world, holding profound significance. Powerful immortal cultivators could sense its existence, but they would not rashly attempt to open it. Although opening the Bridge of Heaven and Earth would deepen one's connection to the world and increase the rate of absorbing spiritual qi, it would also bring severe side effects. Unless absolutely necessary, immortal cultivators would not attempt it.

"Once the Bridge of Heaven and Earth is opened, the body becomes essentially defenseless. My strength has not yet reached its limit, and there is still room for improvement. There is no need to rush into advancing to the Martial Innate realm." Lin Zheyu shook his head.

Before understanding the reason behind the decline of the Immortal Dao in this world, and before reaching the limits of his strength, Lin Zheyu had no intention of advancing to the Martial Innate realm. Those who reached that level rarely appeared in the mortal world. There had to be some unknown and significant side effects behind it.

Lin Zheyu stepped out of the demon river. He glanced back at the slowly flowing current, feeling a trace of reluctance.

This thing really is a treasure!

He wondered if similar rivers existed in the real world. If they did, he would never have to worry about energy again.

I'll keep 2 units of Origin Force in reserve. After using the remaining 10 tomorrow, I will explore for at most two more days. Whether I gain anything or not, I will leave immediately. 𝒇𝒓𝒆𝒆𝙬𝒆𝒃𝓷𝒐𝓿𝙚𝙡.𝒄𝓸𝒎

He had stayed here for quite some time. If he delayed any longer, he was worried Elder Yang might have already prepared his tombstone. Moreover, as time passed, the demon god barrier was becoming increasingly dangerous. It was time to leave.

"It has not been long since those two fought. I should go take a look. Maybe I will get a chance to mingle with the immortal cultivators."

Lin Zheyu moved and rushed toward the direction where the two immortal cultivators had just fought. The Baleful Yin force within the demon god barrier was growing denser, causing increasing interference for both martial artists and immortal cultivators. However, having just condensed a spiritual form, his Perception Domain had greatly improved. The intensifying Baleful Yin force had no effect on him at all.

"Truly mysterious..." Lin Zheyu could not help but sigh in admiration.

He pushed his Perception Domain to its limit. Everything within over 1,100 meters was clearly in his mind, giving him complete awareness of his surroundings.

"To the left..." Lin Zheyu's expression shifted as he changed direction and dashed left.

Within his Perception Domain, he sensed lingering energy fluctuations from the battle to the left, clashing with the dense Baleful Yin force of the barrier. Soon, Lin Zheyu arrived at a devastated battlefield. What had once been a small hill was now completely flattened, the land overturned and in utter ruin.

"What a fierce battle. Such destructive power... If I go all out, creating this level of destruction would not be difficult either."

Lin Zheyu smiled. He was no longer the insignificant Marrow Refining realm cultivator he once was. With his powerful true origin, his strength now rivaled that of Foundation Establishment realm cultivators. The only disadvantage was his lack of dharma artifacts, which would put him at a slight disadvantage in combat.

Pfft!

Lin Zheyu casually killed a nearby yao and checked his surroundings. The residual energy from the battle ended here.

"I am too late. If I had arrived earlier, I might have witnessed a fierce battle." Lin Zheyu felt a hint of regret. He had even thought about swooping in to reap the benefits after both sides were exhausted, but his hesitation cost him the opportunity.

"I will just look around here. Better not get too close to the space-time node."

Lin Zheyu scanned his surroundings. With the strengthening of his spirit and soul, his overall perception had improved, and even his eyesight had changed noticeably. He could now see clearly in the pitch-black darkness, though only within about thirty meters.

With a light tap of his foot, Lin Zheyu vanished from where he stood. As he moved, everything around him appeared clearly within his consciousness. He could instantly detect where yaos were hiding and where the Baleful Yin force was unusually dense.

"Hm?" Lin Zheyu let out a soft exclamation and looked to his right.

In his perception, the concentration of Baleful Yin force there was abnormal, and there was also an extremely faint aura fluctuation. Lin Zheyu's expression changed slightly as he fully activated his concealment technique and quietly moved toward that location.

A gentle breeze stirred the leaves, producing a soft rustling sound. In the dense forest, a woman wearing a pale blue dress sat cross-legged on the ground. Her features were delicate, but her face was pale, and her dress was stained with patches of blood.

The woman opened her eyes and murmured softly, "Barbarians..."

A trace of killing intent flickered through her cold eyes. She had just encountered barbarian warriors. Those who followed the path of the flesh held a great advantage within the demon god barrier. Outside, she could have killed them with ease. Suddenly, her brows furrowed slightly as she looked toward a point in the darkness. Her grip on the sword in her right hand tightened.

"Come out!" the woman said coldly. She did not act immediately, as she had just gone through a fierce battle and was seriously injured.

"Did she find me? Could she be bluffing?" Lin Zheyu muttered softly.

He crouched behind a large tree, about a hundred meters away from the woman. Her voice had not sounded in his mind but had been spoken aloud, which made him suspect she was trying to deceive him.

The woman stared in Lin Zheyu's direction and said coldly, "Must I invite you out personally? Though I have just fought a battle, before I die, I can still make you pay a heavy price."

"Alright, I have really been discovered." Lin Zheyu shrugged and stepped out openly.

Her gaze had never shifted from his direction, clearly confirming she had truly found him.

I need to find a way to improve my concealment. Otherwise, I will not even be able to hide from these immortal cultivators, Lin Zheyu thought as he cautiously approached her.

"I am only passing by and mean no harm. Please do not take offense." Lin Zheyu said sincerely, "Are you injured? Do you need help?"

"No need. If you mean no harm, then please leave."

Her voice was icy cold. A powerful killing intent gathered around her without erupting, firmly locking onto Lin Zheyu. Her expression was grave, and her gaze toward him was cautious.

I am concealed by the Demon Hidden Void Formation. How did he detect me?

This was the source of her caution. The Demon Hidden Void Formation was a powerful formation created by her ancestors, used for infiltrating the demon realm. The denser the Baleful Yin force, the stronger its concealment effect.

"I truly mean no harm. Why does the lady not believe me? I entered this place alone and do not understand the situation here. I was hoping to ask someone about it. Would you be willing to share what you know?" Lin Zheyu probed cautiously. He wanted to gather information about the barrier but did not know where to begin, so he asked in a vague manner.

"Sorry, I do not know much either. If you want information, you can seek out the people from the Directorate of Celestial Observation. They understand the situation here best," the woman replied calmly.

Although Lin Zheyu showed no sign of hostility, the woman did not lower her guard in the slightest. The aura of the man before her was extremely strange. She could not tell whether it had been altered by some secret technique or if he followed a unique path.

In the current age, the traditional Immortal Dao was no longer viable. Countless brilliant cultivators had advanced one after another, forging new paths through different methods. The strange aura on Lin Zheyu did not seem unusual to her at all.