Half an hour later, Han Li came to the center of the dark room again, placed a futon, and sat down cross-legged.

He reached into his arms, took out the storage bag that Hu Yan Daoren had given him after entering the Immortal Mansion.

After opening it, he took out a snow-white jade slip inlaid with golden patterns, and slowly immersed his spiritual sense into it to examine it carefully.

What was recorded in this jade slip was none other than the fourth level of *Zhen Yan Hua Lun Jing*.

Compared to the second and third levels, which involved a valley secret realm, a white sparrow guiding the way, and fragmented stone tablets, this fourth level was obtained much more easily, which made Han Li feel a little unreal.

However, he later figured it out that the remnant stele in the valley secret realm was likely the original scroll of the first three levels of the *Zhen Yan Hua Lun Jing* that Zhulong Daozhu had obtained and deliberately placed there as a smokescreen, leading people to mistakenly believe that Zhulong Dao only possessed these three levels.

As for the jade slip in his hand, it was the same as the first level he had obtained before, just a copy.

The content of the fourth level of *Zhen Yan Hua Lun Jing* was more lengthy and difficult to understand than the previous three levels. Han Li plunged into it and studied hard for more than a month before finally reading through the entire cultivation method.

Based on his cultivation of the first three levels, he had only roughly understood the cultivation mechanism of this level, but there were still some key points that he could not understand for the time being.

However, a special point he discovered was a pleasant surprise.

It turned out that from the fourth level of *Zhen Yan Hua Lun Jing* onward, because the cultivator had accumulated a lot of the power of time laws in their body, they could condense strands of time through perception during the cultivation process.

As for how much could be condensed, it depended on the amount of law power stored in the cultivator's body and the strength of their perception of the law of time.

In the next two months, Han Li did not rush to start cultivating the *Zhen Yan Hua Lun Jing*, but carefully reviewed the first three levels again, correlating them with the fourth level, and comprehending them together.

However, this process took a lot of time, but the effect was minimal, and the understanding of some important points was still stagnant.

Han Li was not surprised by this and was fully prepared. Now that he still couldn't leave, he might as well calm down and cultivate first, improving his cultivation while comprehending the cultivation method, perhaps there would be unexpected gains.

On this day, after sitting quietly in the dark room for half a day, he took a pill to improve his cultivation and began to cultivate the *Zhen Yan Hua Lun Jing*.

A burst of golden light surged in front of him, and the True Word Treasure Wheel slowly rotated and emerged.

Han Li looked up and raised his eyebrows, revealing a look of surprise.

He saw that on the Treasure Wheel, a cluster of Time Dao patterns was lit up, flashing with a translucent light.

Han Li's pupils shrank slightly, and a trace of doubt flashed in his heart.

He had been busy comprehending the *Zhen Yan Hua Lun Jing* before, and he hadn't noticed it at all.

At most four months had passed since the Dao patterns had all disappeared. In theory, no Dao patterns should have recovered. Could it be because of the two strands of time law?

Time crystal strands were too mysterious, and Han Li still couldn't figure out what they were used for, but if they could speed up the recovery of Time Dao patterns, it would be great news.

Han Li couldn't figure it out for a while, so he calmed down and began to cultivate the *Zhen Yan Hua Lun Jing*.

He pinched a magic formula with his hand, and a burst of fine chanting sounded in his mouth.

The True Word Treasure Wheel suspended in front of him rippled with golden halos, slowly floating behind him, hovering above his head, and began to shine brightly.

The golden rays projected from it immediately filled the entire dark room.

……

Time flies, and more than a hundred years have passed in the blink of an eye.

Inside the dark room, Han Li sat cross-legged, motionless like a stone statue, but faint golden light appeared all over his body.

After a long time, he slowly opened his eyes, and the faint golden light in his eyes flickered slightly, then disappeared into the depths of his eyes.

"At this rate, I'm afraid it will take thousands of years to successfully open a celestial aperture... Could it be that I really have to cultivate the *Xuan Sha Ming Ling Gong*?" His brows furrowed slightly, his expression hesitant, and he muttered to himself.

After thinking for a moment, he suddenly had an idea and whispered, "Mo Guang."

The shadow projected in front of him twisted and swayed, stretching forward a bit.

A slight noise sounded in the dark room, and a dark figure separated from Han Li's shadow and slowly stood up.

The figure was dressed in black robes, his skin was as black as ink, and his appearance was somewhat similar to Han Li's. Black hair was draped behind him, and faint black demonic energy surrounded him. It was Mo Guang.

After so many years of recuperation, he seemed to have fully recovered, and his aura was even stronger than before.

"Fellow Daoist Han, you finally remembered me." Mo Guang's lips curled up, revealing a charming smile, and he said slowly.

After saying this, he suddenly noticed the aura emanating from Han Li's body, and his expression changed drastically.

Han Li saw this change in his eyes, but he didn't show anything, he just said calmly

"Over the years, I have experienced many things, but it has not been suitable for you to appear. Today, I happen to have something to ask you, and I hope Fellow Daoist Mo Guang can enlighten me."

"I didn't expect that after seeing you last time, Fellow Daoist Han is now a Golden Immortal. It seems that Mo Guang's vision for choosing a master is much better than before. Just say what you want to ask, Fellow Daoist Han." Mo Guang said with a smile.

"How much do you know about the Gray World?" Han Li asked again.

"The Gray World? This has always been a taboo in the Immortal Realm. Even Ma Liang should not have participated much back then, so I don't know much about it. I only know that it is an boundless world comparable to the Immortal Realm." Mo Guang thought for a moment and said.

"What about the Sha Qi? Do you know anything about it?" Han Li asked, somewhat disappointed.

"Speaking of Sha Qi, you cultivators should know more about it than I do. Whenever there is an act of killing, a fierce Sha Qi will form in the body, just like when we extraterrestrial demons kill, we can absorb demonic energy. It's just that you don't usually manifest it, unless some people kill too much, and the Sha Qi turns from emptiness to reality, then it will manifest on its own." Mo Guang explained.

"Have you ever heard of any cultivation methods in the Immortal Realm that can improve cultivation through Sha Qi?" Han Li nodded thoughtfully and asked.

"As far as I know, there are indeed such cultivation methods, but generally no cultivator will take the initiative to cultivate them. It is said that it will affect the cultivation promotion in a later stage, which is equivalent to adding a cultivation bottleneck to oneself invisibly, which is a self-inflicted act." Mo Guang pondered slightly and said slowly.

Han Li didn't speak for a long time after hearing this, and Mo Guang stood quietly aside, silently looking at him.

"Thank you for your trouble this time. I will talk to you again after this matter is over." Han Li glanced at Mo Guang, and with a flick of his sleeve, Mo Guang's figure virtualized again and merged into his shadow.

"Tens of thousands of years, I really can't wait..."

After Han Li sighed, he pinched a strange magic formula with both hands, and a flash of black light appeared on his body, and the sky-filled Sha Qi surged out, covering the entire dark room.

As the chanting sound in his mouth gradually sounded, the Sha Qi, which seemed chaotic and disorderly like surging dark clouds, suddenly stopped spreading to the outside, as if it had been restrained by a rein, and instead began to gradually shrink and gather.

Its color became heavier and heavier, and the smoke became more and more solid, clinging to Han Li's body surface.

After the Sha Qi solidified and touched his skin, Han Li immediately felt a strange sensation. His heart tightened, but he didn't stop there. Instead, he continued to guide the Sha Qi towards the acupoints on his body.

These Sha Qi, like mana, gathered in one place and attacked an acupoint under his ribs. The acupoint, which had been motionless all along, was attacked by the surging Sha Qi and showed signs of breaking.

Seeing this, Han Li's heart moved, and he immediately closed his eyes and began to cultivate wholeheartedly.

I don't know how long it took, a slight sound came from Han Li's body, and then a small vortex appeared under his ribs, attracting the surrounding heaven and earth spiritual energy to surge in, gurgling into his acupoint.

After dozens of breaths, after all the golden light anomalies completely disappeared, a golden light spot appeared under Han Li's ribs.

The thirty-seventh celestial aperture was finally opened!

With a thought, Han Li probed towards the celestial aperture and saw that in addition to a large amount of immortal spiritual power, there was also a wisp of black Sha Qi floating, which looked very light and not too abnormal.

He felt relieved, and with a slight wave of his palm, he summoned the True Word Treasure Wheel in front of him.

He saw that on the Treasure Wheel, in addition to many Time Dao patterns that had been restored, there were two more clusters near the inner circle, making a total of three hundred and sixty-two clusters.

Speaking of which, since advancing to the Golden Immortal, he has not been able to take care of the Palm Heaven Bottle, and has not tried to continue to increase the Dao patterns by condensing crystal grains. He can only wait until he leaves this place before making plans.

Thinking this, Han Li changed the magic formula in his hand and silently urged the True Word Treasure Wheel. He saw that the golden light rippled on it, releasing layers of golden ripples. Everything was the same as before.

In the next two days, Han Li did not continue to cultivate, but carefully observed his own condition. After confirming that there were no obvious abnormalities, he gradually felt relieved.

After taking the pill, he embarked on the journey of cultivation again.

……

Entering meditation and cultivating, unaware of the years, it was more than a thousand years in a flash.

On this day, since Han Li broke through to become a Golden Immortal, the long-silent sky above the ruined city suddenly had strong winds blowing, dark clouds rolling, and the heaven and earth spiritual energy, like a river tide, gathered towards a garden in the city.

In the dim sky, a spiritual vortex with a radius almost larger than the entire city was generated out of thin air, like a huge funnel connecting heaven and earth, frantically pouring the heaven and earth vitality into a dark hole in the garden.

The frantically pouring heaven and earth vitality instantly filled the entire tunnel, like a continuous river, pouring into a dark room deep in the underground palace.