Xu Hei ignored the implication in Xiong Yan's words. His divine sense quickly scanned the numerous treasures, identifying eighteen items that were useful to him.

In his mind, Xu Hei ranked these treasures.

"This set of formation flags is useful to me. I'm willing to exchange two high-grade Blood Essence Stones for it."

Elder Mo from the Yan Dao Sect spoke up, taking out two Blood Essence Stones.

"Deal!"

Xiong Yan accepted happily, and the transaction was successful.

That set of formation flags was exactly what Xu Hei had his eyes on. Knowing he couldn't hesitate any longer, he spoke up, "I'll take this centipede!"

Xu Hei pointed to a purple centipede within the circle of light.

The centipede's body was missing a segment and was in a state of unconsciousness, with a faint lightning mark visible on its brow.

Xiong Yan chuckled, "The Thousand Thunder Centipede, what do you plan to exchange for it?"

Seeing that the other party recognized the insect, Xu Hei felt a sinking feeling inside, but he remained composed and took out a black vine, saying, "Is a Demon Blood Vine enough?"

This was a fifth-grade Spirit Medicine cultivated by Jiang Nine Phoenix.

In truth, Xu Hei had an even better Phoenix Blood Vine, but since it might be related to Jiang Nine Phoenix's bloodline, he didn't plan to offer it.

"The Thousand Thunder Centipede is indeed a rare lightning-type spirit insect. Do you think Xiong doesn't know its worth and take me for a fool?" Xiong Yan sneered.

"The Thousand Thunder Centipede is indeed rare, but this one is half-crippled. Whether it can be revived is uncertain. I'm only interested because it benefits my cultivation technique, and I plan to devour it. Given that, I'm willing to take a step back and add a Supreme Spirit Stone. If you're still unwilling, then forget it," Xu Hei said calmly.

Xiong Yan pondered for a moment, carefully examining the Thousand Thunder Centipede, and then nodded, "Alright, as you say."

Xu Hei took out a Supreme Spirit Stone, along with the Demon Blood Vine, and exchanged them for the Thousand Thunder Centipede.

With the centipede in hand, Xu Hei used his divine sense to inspect it and was overjoyed.

"Heh, I've struck it rich."

Xu Hei was certain that the other party didn't understand the true value of the Thousand Thunder Centipede.

Xiong Yan likely only heard snippets from some ancient texts, recognizing a name but not comprehending the insect's formidable nature.

If it could be revived and nurtured to maturity, a single insect could rival a Divine Transformation cultivator!

Moreover, if properly cultivated, this insect had a chance to produce a supreme yang divine lightning, which was highly effective against sinister and evil entities, making it a powerful weapon against the Ancient Tomb Sect!

Aside from lacking intelligence, it was far superior to Ji Ying.

Exchanging a Spirit Medicine and a Supreme Spirit Stone for it was indeed a great deal.

Afterward, Xu Hei secretly entrusted Night Owl to help acquire some metallic materials and poisons to feed the spirit insect.

Night Owl complied and handed the treasures over to Xu Hei.

"Xu Hei, you owe me eighteen Supreme Spirit Stones, plus the Night Demon Wings," Night Owl transmitted.

Xu Hei scratched his head and handed over eight Supreme Spirit Stones, saying, "I'll owe the rest."

Though he could repay it all, nurturing the insect was a costly endeavor, and he needed to keep some reserves.

"You still owe ten, don't forget," Night Owl noted, taking out a jade slip to record it.

...

Exchanging treasures was a lengthy process, akin to bargaining in a mortal marketplace.

After a full hour, the Blood Refining Sect completed their transactions, exchanging over sixty treasures, with all parties gaining something.

Next, it was the Yan Dao Sect's turn.

The Yan Dao Sect, based on the resource-rich Renwang Star, offered only fifty treasures, less than half of what the Blood Refining Sect had.

Many of these were self-developed talismans, formation disks, and magical treasures, each with extraordinary power, which greatly tempted Xu Hei. However, considering the possibility of being restrained by the Yan Dao Sect, he decided against exchanging for them.

In the end, Xu Hei only used a puppet cannon to exchange for an unknown broken compass.

The puppet cannon was naturally the one gifted to him by Daoist Sparrow, which he had thoroughly used up. Trading junk for junk seemed fair enough.

"Why did you exchange for this broken compass?" Night Owl was baffled.

Xu Hei looked at the palm-sized compass in his hand, covered in cracks and seemingly on the verge of shattering, having long lost its spiritual essence. If not for its mysterious material that no one could decipher, it wouldn't have been offered for exchange.

"This compass reminds me of an old acquaintance," Xu Hei said with a smile.

Xu Hei didn't elaborate, and Night Owl didn't press further.

The reason Xu Hei exchanged for this compass was that when he operated the Heavenly Demon Technique, the compass established a subtle connection with him.

As for the compass's origin, the Yan Dao Sect claimed it was a floating object found in the universe, seemingly struck by a meteorite and shattered. Xu Hei strongly suspected it was related to Hei Huang.

Next, it was the Ancient Tomb Sect's turn, and Wei Wudao presented over thirty treasures for exchange.

Xu Hei exchanged for a large piece of Void Stone, while Night Owl frequently made moves, acquiring a large batch of rare materials for puppet refinement.

When it was the Divine Continent Star's turn, Night Owl also brought out the Divine Puppet Sect's inventory, though it was limited to about ten items, all rare treasures.

In the end, they exchanged an ancient cauldron and a cloak magical treasure, earning twelve Supreme Spirit Stones.

"Heh, the treasures of our Tianhen Sword Sect are all for personal use, with nothing to spare for exchange. However, there is one thing we have in abundance."

When it was the Tianhen Sword Sect's turn, the white-bearded elder Li Changge smiled slightly and raised his hand.

In an instant, blue light spread, and the temperature in the grand hall plummeted. Despite the restrictions set in advance, everyone felt the biting cold.

"Is that..."

Xu Hei stared at the item in Li Changge's hand.

It was a palm-sized, ever-changing ice crystal, sometimes solid, sometimes liquid, with flickering flames, mysterious and unpredictable.

"Ten-thousand-year Cold Marrow?" Night Owl exclaimed in surprise.

Before setting out, Xu Hei had done his homework and naturally knew what it was. What surprised him was that someone was willing to exchange such a precious treasure.

As soon as this treasure appeared, for some reason, the Flame Demon Ancestor of the Blood Refining Sect's face immediately turned grim, "Ten-thousand-year Cold Marrow, what price do you want?"

"Heh, I don't need to elaborate on the value of the Ten-thousand-year Cold Marrow. You can offer any treasure for exchange, regardless of type, as long as it satisfies me!"

Li Changge smiled, "Additionally, if your treasure is too valuable and you're reluctant, I can offer even more precious Cold Marrow, up to fifty-thousand-year or even... hundred-thousand-year."

This statement left the entire hall in shock.

Ten-thousand-year Cold Marrow was already a rare treasure, and from his tone, he had fifty-thousand-year and hundred-thousand-year Cold Marrow. Where did he get such things?

The Flame Demon Ancestor's face was expressionless, his blood-red eyes fixed on Li Changge, "Old Li, are you doing this on purpose?"

"Oh? What do you mean, Flame Demon Daoist? I don't understand," Li Changge feigned confusion.

Seeing the two at odds, Xu Hei was puzzled.

"Xu Hei, the value of the Ten-thousand-year Cold Marrow aside, its icy attribute is most effective against the Flame Demon Ancestor's cultivation technique. Li Changge bringing it out openly likely has significant implications," Night Owl transmitted.