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This wisp of soul essence was of little use to the weak demonic beasts, but once they broke through to the Saint Beast level, the demon crystal would turn into a beast core.

At that time, they would be able to command their demonic cores to fight, and that would be their strongest attack.

Of course, this was only a desperate move that they would use when they were forced into a corner. Normally, they would protect the Demonic Core extremely tightly and they would not easily let it out to attack.

Otherwise, if the demonic core was damaged, they would suffer a fatal blow to their foundation.

In other words, a demonic beast's move of controlling the demonic core to injure one thousand enemies and self-destruct eight hundred times over was the ultimate move of a demonic beast!

Unless it was absolutely necessary, no demon beast was willing to use it.

And because there was a part of their souls inside, even if they lost their physical bodies, as long as the beast core was lost and their consciousness was not erased, they could be reborn or use secret techniques to reform their physical bodies.

This was the terror of demonic cores.

Although the demon crystal wasn't as valuable as a demon core, it was still a treasure that contained the essence of a demon beast's body. Needless to say, it was extremely valuable.

It had a lot of uses, and could be used to replace spirit stones to set up formations, as well as materials to refine and refine pills …

For example, the Blood Python Sword in front of him was formed from the Demonic Crystal of the Rank 3 Demonic King Blood Pupil Ice Python. It had a portion of the Blood Pupil Ice Python's power and power, and could even activate the wisp of its soul inside to fight!

Due to the fact that the blacksmith was weak, the demon crystal of the Blood Pupil Ice Scale Python couldn't be fully assimilated into the sword.

He had only used some special technique to insert it into the sword hilt. The effect was greatly reduced, but it was still far more precious than a normal mid-grade third-ranked Spirit Treasure!

Not just one plus one equals two, but multiplier.

Seeing that everyone knew about the way of auctioning, Lin Shiya did not say much. Her charming voice carried a hint of charm as it entered everyone's ears, causing their blood to boil, "Blood Python Sword, the starting price is thirty thousand spirit stones, each increment must be at least one thousand spirit stones!"

"Thirty one thousand!"

"Thirty three thousand!"

"…"

"Forty thousand!"

The moment Lin Shiya's voice fell, the eyes of many people in the auction hall turned red with envy.

Thirty thousand Spirit Stones might be a lot, but the Blood Python Sword was also worth this price. Anyone who could enter the auction hall wouldn't have thirty to fifty thousand Spirit Stones on them! So, many of them could afford it.

Ling Yun indifferently looked at the Blood Python Sword and immediately lost interest. He shook his head and said lightly: "The refining process was so rough that even the impurities in the sword body were not refined well, and you even took it out to auction!"

How keen was he? In his previous life, he was a high-level seventh step alchemist, and he knew how to forge artifacts as well. Moreover, it was his specialty. It wasn't strange that he was able to see through the flaw of the Blood Python Sword with a single glance.

"This Blood Python Sword is very good!" Qin Feng looked at Ling Yun speechlessly. He thought that Ling Yun was just spouting nonsense and couldn't help but say: "Look, the sword's body is as smooth as a mirror. Also … How could there still be impurities remaining? "

Xu Ying'er, Ling Qing Xue and a few others also looked over, puzzled.

In the entire room, only Qin Yinyue knew Ling Yun's identity. Naturally, she would not leak news of this matter, and Qin Feng and the rest naturally did not.

Cai'Er continued to look at Ling Yun, but did not say anything. In the little girl's eyes, as long as Ling Yun was right, everything he said was true.

Ling'er, on the other hand, looked at Ling Yun in astonishment. He did not expect Ling Yun to actually see through the flaw of this sword.

Impossible, he couldn't cultivate, so he naturally couldn't be a refiner. Even if one had read the books on equipment forging thousands of times, without strength and the ability to forge artifacts, it would be difficult for one to possess such discernment!

Especially since this was a third grade spirit weapon, even a fourth grade weapons craftsman would not necessarily be able to see through it.