At this moment, within the dark chamber, a mist-like golden glow, like a rolling golden ocean, shrouded the entire room.

In the center of the room, Han Li sat cross-legged with his eyes closed. Bathed in the golden light, he seemed to be wearing a golden suit, his entire body gleaming with gold, revealing only a blurry silhouette.

Vast heaven and earth spiritual energy gathered from all directions, swirling in the center of the room, forming a vortex that emitted waves like tides. The vortex impacted the restrictions set by Han Li, causing them to sway slightly, unable to stabilize for a long time.

After several hours, this fluctuation gradually subsided, and the momentum gradually diminished.

Suddenly, Han Li let out a roar, and his eyes snapped open.

Inches of golden light shot out from his pupils, as substantial as they could be, lingering for a long time.

After a while, he exhaled a long breath of turbid air, then opened his mouth and inhaled. The golden light in the room immediately converged toward his mouth like a long whale sucking water, and he inhaled it all into his abdomen in one gulp.

Immediately afterward, a golden light spot appeared below his throat, extremely bright, constantly absorbing the surrounding residual heaven and earth spiritual energy.

With this, the last immortal aperture for entering the mid-stage of Golden Immortal was finally opened.

"Whoosh, whoosh, whoosh..."

A gust of wind howled, and the Mantra Treasure Wheel circled from behind Han Li to the front, floating leisurely in the air, spinning around and around.

Han Li looked up and saw that it was shimmering with golden light, with more than four hundred semi-transparent Time Dao patterns spiraling around it.

His eyes flashed, a smile appeared at the corner of his mouth, and the golden light in his eyes receded. He summoned with a single hand.

Immediately, six golden crystal threads shot out from the Mantra Treasure Wheel, shooting straight towards his palm like hidden weapons.

As they approached his palm, the golden crystal threads suddenly stopped abruptly. They softened from a taut state, wrapped around his fingertips, and fell into his palm.

These crystal threads were none other than Time Law threads. In addition to the original three, Han Li had painstakingly cultivated the Mantra Wheel Sutra over the years and had intermittently condensed three more.

He had thought that successfully cultivating to the mid-stage of Golden Immortal this time would allow him to condense at least one more Time Crystal Silk, but it didn't work out as he had hoped.

In fact, for more than a thousand years, he had been immersed in cultivation, and had only barely woken up three times in between.

Almost every time, he fell into a state similar to the previous empty consciousness during his cultivation, and then he would seem to gain something and condense a Time Crystal Silk.

As each Time Crystal Silk increased, his understanding of the power of Time Law seemed to deepen, and the bottleneck he encountered in comprehending the fourth level of the Mantra Wheel Sutra was resolved, and his cultivation became smoother.

A thousand years passed quickly, and the mortal world went through several cycles.

But for those who had crossed the threshold of the True Immortal Realm, it was just a fleeting moment. It was rumored that some immortals who practiced special Gongfas could fall into a deep sleep and several thousand years would pass.

Therefore, Han Li was greatly surprised that he could advance to the mid-stage of Golden Immortal so quickly. At the same time, he was more and more amazed by the Xuantian Nether Spirit Technique.

Of course, he couldn't help but feel a little uneasy. After all, using evil Qi to promote rapid improvement in cultivation had many hidden dangers. However, every time he opened an immortal aperture, he would carefully observe it and test it with various means. But except for the gray threads that lingered on the immortal aperture, he didn't seem to find anything else wrong.

In the current situation, he could only let it go for the time being. After all, after so long, he had finally cultivated to the mid-stage of Golden Immortal, and he finally had a chance to leave this place. As for other things, it would not be too late to plan after leaving here.

After everything calmed down, Han Li immediately got up, put away all the magic circles he had set up around him, and turned to leave the dark chamber.

When he arrived at the hall where the remnant soul of the old Taoist was, before he even entered the door, he heard bursts of muttering sounds, which were vague and unclear.

When he arrived at the door of the hall, Han Li saw that the remnant soul of the old Taoist was floating in the air, talking to his statue.

"Alas, back then, how suave and handsome was I, the old Taoist? Not to mention the identity of the Immortal Lord, even the sword immortal title of Wusheng Daoist, I don't know how many fairies and beautiful women were attracted to me. Now I have been trapped here for I don't know how many years. I think there must be many, many fairies who are sad and weeping, and their hearts are broken..."

Han Li stood for a while, and couldn't listen anymore, so he coughed lightly and interrupted the old Taoist's words: "It seems that senior has recovered well, and his spirit is many times stronger than when we first met."

When the old Taoist heard this, he suddenly turned to look at Han Li. First, he was stunned, then surprised, and then delighted. The changes in his expression were extremely rich.

"How... how is it possible? How long has it been? You have really cultivated to the mid-stage of Golden Immortal. Could it be that..." The old Taoist raised his eyebrows and pinched his fingers, saying hesitantly.

"Could it be that what?" Han Li frowned and asked, thinking that something was wrong.

"Could it be that you, like me, the old Taoist, are a rare cultivation genius in ancient times?" The old Taoist said with a solemn expression.

Han Li was speechless when he heard this.

"I have come here to say goodbye to senior. Now that I have become a mid-stage Golden Immortal cultivator, I can leave this place. As for the soul-nourishing furnace, it is not a rare item, so I will leave it to senior as a farewell gift." Han Li cupped his fists slightly at the old Taoist's remnant soul, and turned to leave.

But before he could turn around and raise his foot, the old Taoist's urgent cry came from behind.

Hearing this, Han Li stopped and turned to look back.

"Hey... brat, aren't you taking me with you?" The old Taoist shouted loudly, and floated to Han Li in an instant.

"When did I say that I would take senior with me?" Han Li asked with a faint smile on the corner of his mouth.

"Hey, you ungrateful..." The old Taoist stopped halfway through his words.

Han Li looked indifferent, raised his eyebrows, and seemed to be encouraging the old Taoist to continue.

"Hehe, I, the old Taoist, at least pointed out the way out for you. You can't just leave me here, can you? Besides, once you destroy the core of the secret realm, I'm afraid this underground palace will cease to exist. How can my wisp of remnant soul still be kept?" The old Taoist said pitifully, changing his tone.

Hearing this, Han Li deliberately pretended to be considering, looking a little embarrassed.

"What senior said seems to make sense, but you and I are just passing acquaintances, and it is still hard to say whether it is a good relationship or a bad one... How about this, senior, you teach me the method of condensing the Spiritual Domain, and I will take you away from here, how about that?" After a while, he said slowly.

When the old Taoist heard this, he wished he could slap himself.

He only regretted that he had said that he had once asked Mo Yu to condense the Spiritual Domain in order to show off. The kid in front of him must have been planning to use this to his advantage.

"I can teach you the method of condensing the Spiritual Domain, but what if you go back on your word afterward?" The old Taoist said with a serious expression.

"I am just suggesting a feasible method. Since senior has concerns, then forget it. I don't want to do anything that is difficult for others..." Han Li said indifferently, with a casual smile on his face.

"You... you... alas... As the old saying goes, the situation is stronger than people, so I have to do it. Just do as you said." The old Taoist glared and said decisively.

"Senior is really a straightforward person." Han Li also said seriously.

"What do you know about the Spiritual Domain?" The old Taoist asked in a muffled voice, complaining in his heart.

"This... I don't know much, please tell me directly, senior." Han Li shook his head and said.

Hearing this, the old Taoist rolled his eyes and continued:

"I don't need to say more about the function of the Spiritual Domain. You should have seen a lot of it. As for its essence, it is actually a range in which cultivators influence the surrounding environment when they release a certain law power. The size of the range and the strength of the influence are related to the degree to which the cultivator has mastered the law power."

"Senior, is it necessary to master the power of law before the Spiritual Domain can be used?" Han Li frowned slightly after hearing this.

He suddenly remembered that when he was in the Spirit World, Bao Hua was able to use the Spiritual Domain before she had mastered the power of law.

"That's right, whether or not you have mastered the power of law is the prerequisite for whether or not you can use the Spiritual Domain. However, it is not absolute. Some cultivators who have not mastered the power of law can also use the Spiritual Domain by using some special treasures and special Gongfas. However, this kind of Spiritual Domain is just a shoddy imitation, with many fatal flaws, and it can't enter the eyes of my old Taoist at all." After thinking for a while, the old Taoist said slowly.

"I see. Since this Spiritual Domain is closely related to the power of law, does it also rely on the power of law to maintain it when it is used?" Han Li nodded and asked.

"That's right, and whether the Spiritual Domain is stable and whether its power is strong is also related to the degree to which the cultivator has mastered the power of law. If you have more Time Law threads, you can also enhance the power of the Spiritual Domain to a certain extent." The old Taoist continued.

The old Taoist told Han Li some basic knowledge about the Spiritual Domain one after another.

While listening, Han Li compared it with what he had seen in the past, and many doubts in the past were finally resolved.

Finally, the old Taoist looked at Han Li and said slowly:

"The Gongfa I taught you does not have any special name. It is one of the most common Spiritual Domain Condensation Methods in the Immortal Domain. It is valuable because it is the most popular and has the fewest mistakes. Listen carefully."

After saying that, he began to teach Han Li the incantation of that Gongfa.

In his words, this Gongfa was said to be very ordinary, saying that it was the most common, as if it was something that was rotten on the street, but that was relative to his original Taiyi Jade Immortal level. For Han Li's current level, it was not common.

In fact, when he was cultivating in the Candle Dragon Dao, he had also looked for related Gongfas. Although there were collections in the sect, only those with a cultivation level above Golden Immortal could exchange them. Later, when searching in the Wuchang Alliance, they were also sold at extremely high prices.

"How is it, have you remembered everything?" The old Taoist glanced at him and asked.

"I have remembered it. It doesn't seem to be difficult to cultivate, but I have to verify it before I know." Han Li nodded and said.

"I knew that you brat would only believe it after you have practiced it." The old Taoist said angrily.

"It shouldn't take long, please wait a few more days, senior." Han Li said with a smile.

After saying that, he flicked his sleeves, turned around and left the hall on his own, leaving the old Taoist alone, muttering non-stop.