Han Li and Lu Yuqing steadied themselves, both exhaling a long breath.

Although the teleportation array finally activated and seemed to send the two out, it suddenly collapsed at the last moment. The two were then teleported into a space turbulence, and it took them a lot of effort to escape.

The spatial crack flickered a few times, then suddenly closed and disappeared.

Han Li glanced around, a strange look on his face, and immediately released his spiritual sense.

Lu Yuqing saw the surrounding environment, her eyes relaxed, and she took out a green pill and swallowed it. A cyan aura flashed on her face, and her complexion looked a little better.

"Where is this place? Could it be that we were teleported out of the Underworld-Cold Immortal Mansion?" She took a breath, then carefully looked around, somewhat uneasy.

There could be a world of difference with problems in the teleportation array, not to mention that the two of them fell directly into the spatial storm.

"It shouldn't be. Although it's very thin, I can still sense the unique Underworld-Cold Qi of the Nether-Cold Realm. We should still be in the Immortal Mansion," Han Li said slowly.

"That's good," Lu Yuqing breathed a sigh of relief.

"That teleportation array is already destroyed. Xue Han and the others are probably doomed. Most likely, they won't be able to catch up. Let's rest here for a while," Han Li added.

Lu Yuqing was seriously injured at the moment. Although he was not injured, he had almost exhausted the Immortal Spiritual Power in his body to escape from the void turbulence.

Although this place looked desolate, it seemed safe for now.

"Alright," Lu Yuqing immediately nodded, eager to do so.

So the two landed on the desert, and placed several restrictions around them, then sat down cross-legged.

Han Li took out two Immortal Essence Stones and held them, absorbing the Immortal Spiritual Power inside to replenish himself. The Immortal Spiritual Power in his body slowly recovered.

More than half a day later.

Han Li opened his eyes, his eyes gleaming, and the Immortal Spiritual Power in his body had fully recovered.

This trip to the Underworld-Cold Immortal Mansion, encountering various situations and continuous fierce battles, had subtly refined the Immortal Spiritual Power in his body.

With this in mind, he closed his eyes and sensed the last Immortal Aperture, but there was still no sign of a breakthrough.

He shook his head with a wry smile and turned to look aside.

Lu Yuqing was still practicing and meditating, her whole body shrouded in several layers of cyan halos, forming a cyan ball of light, her figure looking somewhat hazy.

Han Li retracted his gaze, waved his hand, and a gray-green stone slab appeared in his hand, which was the second half of the Great Zhou Celestial Origin Art he had obtained earlier.

He had been busy searching for treasure and fighting before, and had not had time to take a good look at this second half of the technique.

Thinking about it, his eyes flashed with blue light, and he looked at the stone slab in his hand.

The stone slab suddenly became several times larger in his eyes, and the words on it became clearer, entering his eyes.

A full hour passed before the blue light in Han Li's eyes faded, and he slowly closed his eyes.

He had fully understood the second half of the Great Zhou Celestial Origin Art and recorded it in his mind.

Like the first half of the technique, the second half also contained methods for opening up eighteen Mysterious Apertures.

According to his previous estimates and calculations, as long as he could master this second half of the technique and open up these eighteen Mysterious Apertures, breaking through the last Immortal Aperture should not be a problem.

Cultivating the second half of the Great Zhou Celestial Origin Art, like the first half, involved guiding the power of starlight into the body to open up the Mysterious Apertures within the body.

However, this second half of the technique was very complex, far exceeding the first half. In particular, the process of opening up the Mysterious Apertures was even more complicated. In addition to requiring a large amount of starlight power, it also required a considerable amount of time for body tempering and cultivation. Its harshness would far exceed the first half of the technique.

At this moment, he couldn't wait to put aside all trivial matters and immediately find a place to retreat and cultivate diligently, but this Underworld-Cold Immortal Mansion was obviously not a good place to cultivate, and time was limited. He also had to help Hu Yan Dao Ren retrieve some treasure in exchange for the subsequent techniques of the Sutra of the Treasure Wheel of Truth. He could only wait until the matter of the Underworld-Cold Immortal Mansion was over.

Han Li took a deep breath, waved his hand to put away the gray-green stone slab, opened his eyes, and looked at the void in front of him, a trace of contemplation flashing in his eyes.

He didn't know where Hu Yan Dao Ren and Yun Ni were at the moment, and what exactly was the treasure that the other party was talking about.

The situation inside this Underworld-Cold Immortal Mansion was far more complicated than he imagined. The area was so large, and he was now wandering around randomly, he didn't know where to find them.

Han Li shook his head and was about to close his eyes when he suddenly raised his eyebrows, as if he had thought of something.

He raised one hand, and a faint golden light flashed, and a light golden storage bracelet appeared in his hand, which was Xiong Shan's storage bracelet.

He hadn't had time to check this thing yet. He thought that this person, as a Sword Cultivator with not weak cultivation, seemed to have a lot of complicated relationships with the Wusheng Sword Sect. Moreover, he stepped into the Nether-Cold Palace earlier than himself, so there should be many good things in his storage bracelet.

Han Li was slightly excited, and divided a wisp of divine sense and entered the storage bracelet. The smile on his face suddenly stiffened.

To his surprise, the storage bracelet of this Deputy Leader of the Candle Dragon Dao, a dignified True Immortal Realm late-stage cultivator, was actually empty!

It wasn't entirely correct to say that there was nothing. In a corner of the storage space, there were some scattered materials and other sundries, but none of them were precious.

The only things that could be taken out were probably a few bottles of recovery pills and a few books. There were not even a few Immortal Essence Stones, looking extremely shabby.

Han Li frowned slightly, and then understood.

Xiong Shan had already exhausted everything in his last sword refinement. Only a few hundred years had passed, so it was normal to exhaust his family wealth for this second sword refinement.

He probably went straight to the secret realm as soon as he entered the Nether-Cold Palace, and didn't have time to collect treasures, so the storage magic tool was so shabby.

Han Li couldn't help but feel a little disappointed, and then changed his mind and slowly exhaled.

He had already obtained a lot in the Nether-Cold Palace, and wanting more would be greedy, which was not a good sign.

Thinking of this, his mood quickly returned to calm. He waved his hand and took out the things from the storage bracelet, looked at them roughly, and put them away in categories.

Soon, only a silver jade box was left in front of Han Li, and three jade slips were placed in the box.

Actually, he was quite interested in the cultivation techniques that Xiong Shan practiced, so he immediately picked up a white jade slip and probed his divine sense into it.

This jade slip recorded a Great Tragedy Yang Sword Manual, a metal-attribute technique that could be cultivated to the Golden Immortal Realm, and should be Xiong Shan's main cultivation technique.

This Great Tragedy Yang Sword Manual used the sword to enter the Dao. According to its description, the power of law comprehended belonged to the metal of the five elements, which was unstoppable and somewhat similar to the law of destruction.

Han Li had not dabbled much in metal-attribute techniques, and he did not intend to study them now, so this technique was of no use to him.

However, at the end of the technique, there were some sword Dao secrets and experiences, which were worth his research and reference.

He read this technique from beginning to end, then put it back in the jade box, picked up another light golden jade slip, and immersed his divine sense in it.

This jade slip recorded a body refinement technique, the Arhat Golden Body Technique, which should be the body refinement technique that Xiong Shan used when he climbed the steps outside the Nether-Cold Palace earlier.

This body refinement technique was also quite extraordinary. After cultivation, one could display the Arhat Golden Body, which was powerful. However, to cultivate this body refinement technique, one must master the metal-attribute law.

When Han Li saw this, he lost interest. He looked at the contents roughly, then put it down, picked up the last jade slip, and put it on his forehead.

The jade slip contained some pill prescriptions, most of which were metal-attribute pills. Although they were not Dao pills, most of them were Earth Grade pills, which were quite useful for True Immortal Realm cultivators who practiced related techniques.

Han Li retracted his divine sense, a trace of doubt flashed in his eyes.

None of the three jade slips contained any records about the Thousand Peak Spiritual Gathering Sword Array. Could it be that Xiong Shan destroyed it?

Thinking about it, he was about to put the jade box away.

"Huh!"

At this moment, Han Li let out a soft "Huh!" and picked up the jade box and fiddled with it a few times.

Only a soft "click" sound was heard, and the jade box split in half from the middle. There was actually another interlayer underneath, which contained a gray thing that looked like a piece of cloth, folded neatly.

"What is this?" Han Li picked up the gray cloth.

This gray cloth was square, gray, and looked like a dirty rag that hadn't been washed for a long time. However, upon closer inspection, one could find that the gray cloth faintly revealed some patterns.

These patterns looked very strange. They were not ordinary array patterns or spiritual patterns, nor were they talismans or spells. With Han Li's knowledge, he couldn't recognize their origin at all.

However, these patterns contained profound mysteries and were not random doodles.

Han Li quickly shook his head and gave up thinking about these patterns. Instead, he examined other parts of the gray cloth.

This thing felt very smooth and had a slightly cool feeling. He didn't know what material it was made of.

He looked at the gray cloth back and forth for a long time, and even used the Clear Spirit Eyes and the Eyes of Truth, but found nothing.

The gray cloth had no spiritual energy fluctuations. Apart from those patterns, he couldn't see any other mysteries. It seemed like just an ordinary gray cloth.

However, since Xiong Shan treasured this thing so much, it must not be an ordinary item.

Han Li's face showed a contemplative look. He held the gray cloth in his right hand and unconsciously twisted it with his fingers.

"Huh!" He suddenly raised his eyebrows and looked at the gray cloth in his hand.

With his current strength, even an unintentional rub would crush a steel plate, but this gray cloth was as if nothing had happened.

This was a bit strange!

Han Li's eyes flickered slightly, and he rubbed it a little harder with his fingers, but the gray cloth was still as if nothing had happened.

His eyebrows moved, and he increased his strength again. The gray cloth only straightened, but there was still no change, easily withstanding his strength.

A gleam of light flashed in Han Li's eyes, and he changed to grabbing the cloth with both hands and tearing it with his arms.

The gray cloth became tighter and tighter, but there was still no sign of tearing.

Han Li's heart moved, and a hint of joy flashed in his eyes.

He had just spent almost 50% of his strength. Even ordinary spiritual treasures might not be able to withstand his tear, so it seemed that this gray cloth was indeed mysterious.