Han Li placed the jade slip containing the Water Evolution Four Seasons Art against his forehead, his eyes closed, his body motionless, like an old monk in meditation.

At first, his brow furrowed slightly, as if he didn't quite understand something, but soon it relaxed, as if he had figured out a key point. However, before long, his brow furrowed again, then relaxed, and so it continued repeatedly.

As time passed, Han Li's brow furrowed deeper and deeper, and never relaxed, as if he were completely stumped by some difficult problem. Sweat gradually began to seep from his forehead.

This examination lasted for a full three days and three nights.

When Han Li opened his eyes, his back was already soaked with sweat, and his eyes were bloodshot, as if he had expended a great deal of mental energy.

"How could this be..." he murmured, taking the blue jade slip from his forehead.

This Water Evolution Four Seasons Art contains a total of seven volumes.

At the beginning of its cultivation, it also requires the condensation of a magic treasure like the Mantra Wheel, called the "Time Cleansing Vase," which can absorb the essence of heaven, earth, sun, and moon to condense Time Droplets.

When the technique is cultivated to the fourth volume, it becomes possible to refine the collected Time Droplets and condense Time Silk, which possesses the power of the Time Law.

Han Li was no stranger to this Time Silk. He had seen it in the Spirit World, where it was produced by the Rakshasa Spider and was hailed as a rare treasure of the Nine Heavens, born in the so-called Time River containing the Time Law. It could extend the lifespan of mortals or low-level cultivators and delay the descent of Heavenly Tribulation for high-level cultivators.

According to the description of the technique, the Time Silk refined through the Water Evolution Four Seasons Art contains a more pure Time Law power, so its effects are more obvious. It can even help True Immortals delay the arrival of the Three Calamities.

However, the condensation of the Time Cleansing Vase, like the condensation of the Mantra Wheel, not only requires objects containing the Time Law, but also many other rare and exotic treasures, which is a major problem blocking the path of many cultivators. It seems that many Cangliu Palace cultivators have shied away from this Time technique for this reason.

This technique, unlike the Mantra Wheel Sutra, does not simultaneously condense Immortal Apertures and improve cultivation with the improvement of the technique. Instead, it focuses more on how to improve the speed of condensing Time Droplets.

It is said that when the Time Droplets accumulate to the level of a river, more indescribable supernatural powers can be used, but the condensation speed is extremely slow. Taking the initial cultivation as an example, the condensation of each Time Droplet takes centuries. To accumulate water into a river, it is unknown how much time would be required. Perhaps even Golden Immortals cannot achieve it.

After making this comparison, Han Li found that the Water Evolution Four Seasons Art seemed to be slightly weaker in terms of power and effect compared to the Mantra Wheel Sutra, but it also had its own unique advantages.

Now he had only browsed through it several times and had not cultivated it like the Mantra Wheel Sutra, so his understanding was naturally limited.

Han Li took a deep breath, temporarily suppressing the doubts in his heart, and opened the Illusionary Star Treasure Canon, slowly turning the pages.

The inner chamber was silent, with only the rustling sound of turning pages.

In a flash, more than a day had passed.

Han Li slowly closed the wax-yellow book, rubbed his aching temples, and a smile slowly crept onto his lips.

This Illusionary Star Treasure Canon is even more peculiar than the previous two Time techniques. Although it is touted as a Time technique, it is actually more like a treasure-refining manual.

Han Li felt this way because after cultivating this technique to a certain level, it becomes possible to extract something called "Illusionary Star Sand" by decomposing things containing the power of the Time Law.

And this Illusionary Star Sand, as long as it is refined in a special way, can be used to create a closed small space with sand grains, which is called the Illusionary Star Sand Realm, such as an Illusionary Star Sand Box, an Illusionary Star Sand Bottle, and so on.

And within the internal space of these sand boxes or sand bottles, the flow of time will change.

"If there is enough Illusionary Star Sand, could it be..." A thought suddenly surfaced in Han Li's mind, and his brow couldn't help but twitch upward.

After a moment, his expression quickly returned to normal, and he gave a self-deprecating laugh. "Let alone whether it can really be done, where can so much Illusionary Star Sand be found? Time Law objects... are not so easy to obtain."

After saying that, his eyes wandered back and forth between the two jade slips and the ancient book, revealing a look of contemplation.

These three techniques all cultivate the power of the Time Law, but their focus seems to be different. Apart from the Mantra Wheel Sutra, which can be cultivated as a technique, the other two techniques are related to treasures of the Time Law.

In addition, after comparing and studying the three techniques together, Han Li always vaguely felt that there was some kind of connection between them.

Of course, since the three are all related to the Time Law, it is not surprising that there are some similarities. However, as Han Li delved deeper into his studies, he found that things did not seem so simple. But when he wanted to verify them with each other, he felt that some places did not match up.

…

Time flew by, and more than ten days had passed.

In the cave's inner chamber, Han Li stood tall, holding an ancient book and a jade slip in his hands, with a wry smile on his face.

After days of hard thinking, he was still at a loss.

"Forget it, forget it, if I continue to dwell on this, I'm afraid it will form a knot in my heart and hinder my future cultivation." He sighed, turned his wrist, and put away the ancient book and the jade slip.

Since the Time Law is known as one of the three supreme laws of the Immortal Domain, techniques related to it are different from ordinary techniques. Before figuring out the relationship between them, Han Li did not intend to rashly cultivate the other two Time techniques.

Of course, in the end, it was because the current situation was not stable, and he didn't have much time.

Thinking this in his heart, he sat down cross-legged again, turned his wrist, took out a white jade porcelain bottle, poured out a jade-like pill from it, and swallowed it.

This pill is called Snow Soul Pill, one of the Golden Immortal-level pills obtained from Xiao Jinhan, which has the effect of strengthening the foundation, cultivating the origin, and promoting cultivation. It is just right for him to take now.

After a moment, Han Li's expression returned to calm, and after sitting down cross-legged, he began to close his eyes and adjust his breathing again.

After his mind was stable, he placed the only remaining snow-white jade slip with golden patterns on it against his forehead.

This jade slip recorded the fifth level of the Mantra Wheel Sutra.

Layers of golden ripples rippled from the jade slip, turning into a soft light that enveloped Han Li.

Compared to the difficulty of practicing the fourth level, this fifth level did not seem so difficult to get started with. After Han Li memorized all the incantations, he put away the jade slip.

His hands crossed in front of him, forming a magic seal. Immediately, golden light rippled behind him, and the Mantra Wheel slowly emerged from it, hovering in the air.

Because of the barrier of the restriction array, there was no leakage of the Mantra Wheel's fluctuations, but Jin Tong and Little White, who were in the outer chamber, still noticed a trace of abnormality due to the unique connection with Han Li, and turned to look inside.

On the Mantra Wheel, clusters of Dao pattern light shone brightly, like small golden suns, glittering and dazzling.

Meditating and cultivating, time flew by, and more than three months quickly passed.

During this period, Dark Star Canyon became more and more lively. In addition to the other largest tribes, nearly half of the other medium and small tribes had migrated to the Youchen Clan.

The Youchen Clan was naturally lively and busy. Nuo Yifan came twice in the first month, but was told that Han Li was in seclusion, so she never came to this cliff again. It seemed that everyone had forgotten that a human was living here.

On this day, inside the cliff cave, a little girl in red and a white Pixiu all opened their curious eyes, standing in front of the restriction light curtain that divided the inner and outer chambers of the cave, peering inside.

Just half an hour ago, after Han Li took a round fruit with dense golden spots on the surface, the Mantra Wheel behind him became even brighter.

On the outside of his thigh, a small golden vortex appeared. Layers of dense golden light were constantly gathering around it, surging into the vortex. That was his sixty-first Immortal Aperture!

And with the formation of this Immortal Aperture, two more clusters of Time Dao patterns appeared on the Mantra Wheel at the same time.

After a moment, when all the surrounding fluctuations gradually lessened, Han Li slowly opened his eyes. There was not much joy in his eyes, but rather some melancholy.

"With the help of a fruit containing the power of the Time Law, I only managed to open up one Immortal Aperture with difficulty. I don't know how much resources it will take to cultivate to the Grand Luo realm..." He couldn't help but smile wryly.

However, as soon as he finished speaking, a green light lit up on his chest, and the dark green vial suddenly flew up on its own.

Han Li raised an eyebrow and hurriedly looked at the Mantra Wheel. Then he was pleasantly surprised to find that eleven golden threads were wrapped around it, sparkling with crystal light. It was Time Silk.

The fruit he had obtained from Gongshujiu, whose origin was still unknown, had actually given him an additional Time Crystal Silk without him even realizing it. This was truly an unexpected joy.

But looking at the current posture of the Palm Heaven Bottle, it seemed that he was about to travel through time again.

As expected, with a burst of "rumbling" sounds, a thick green light surged out from the dark green vial, which had already grown as large as a millstone, and hit the restriction at the division between the inner and outer chambers, directly tearing the void and condensing that strange crystal wall.

Jin Tong and Little White's vision was blocked by the crystal wall and the restriction. They could neither see the scene inside nor detect the changes inside, so they had to return to the stone table somewhat bored.

Han Li looked at the green vortex gradually emerging in the crystal wall, and slowly closed his eyes.

Immediately afterward, a huge and strange suction force suddenly arose, enveloping his entire body. His divine soul power was like a wild horse released from its reins, leaving his body and disappearing into the crystal wall vortex in a flash.