Yuan moved Number One Under Heaven to the side before placing the Infinite Obsidian onto the anvil.
He then lightly tapped it with his hammer to gauge its toughness, only to be surprised by the result.
He proceeded to stare at the Infinite Obsidian in silence for a moment before suddenly raising the hammer high into the air and bringing it down with his full strength.
CLANG!
The entire chamber trembled violently from the overwhelming pressure generated by the impact.
"Wow..." Yuan muttered in a surprised voice after seeing the results.
Despite using his full strength, the Infinite Obisdian remained unscathed.
"Is this thing indestructible or something?" he wondered aloud, as he’d never seen a material this durable before.
Suddenly, Mu Xuelian approached the chamber and said, "Lord Shiva has something to say."
"Hm?"
By the time Yuan turned to look at her, Shiva had already taken control of Mu Xuelian’s body and was slowly approaching him.
However, her attention was not on Yuan at all, but on the piece of Infinite Obsidian resting atop the anvil.
"Do you recognize it?" he asked her.
She nodded and said, "We call it Void Fragment, and it’s commonly used for crafting treasures by Eternals who are into that."
"Where does it come from?" Yuan then asked.
"From inside black holes," she calmly replied.
"What?" Yuan raised his eyebrows, doubting whether he had heard her correctly.
"As black holes continuously consume matter over time, everything inside them becomes compressed beyond logic," Shiva explained in a calm voice. "We simply harvest the remnants whenever we need them, since materials like these are actually quite abundant there."
"..."
After a moment of silence, Yuan asked, "Then how do they refine something like this?"
"How would I know?" Shiva shrugged. "Very few Eternals are actually interested in crafting treasures."
She then continued, "However, since we’re talking about Eternals, they most likely use Eternal Essence. After all, Eternal Essence is capable of cutting through even the supposedly indestructible."
"Oh? Using Eternal Essence to forge treasures? Why didn’t I think of that sooner?"
A flicker of excitement appeared within Yuan’s eyes the moment he realized the possibility.
Yuan immediately infused some Eternal Essence into his hammer before striking the Void Fragment once again, though this time he deliberately held back his strength.
Ding!
Even though he had only used a few billion years’ worth of Eternal Essence, Yuan finally managed to make progress on the material, slightly flattening the previously unmoving Void Fragment.
"It... actually worked?" Yuan muttered in a somewhat dazed voice.

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