Xu Song did not lie to Zhouyang.
When Zhouyang followed his words and released a wisp of "Qianyang True Flame" to burn the "Nine Heavens Profound Gold" in his hand, the piece of seemingly ordinary dark golden Spiritual Gold gradually began to turn golden as the temperature rose.
At the same time, a dazzling golden Spiritual Light burst forth from the Spiritual Gold in his hand.
The golden Spiritual Light was brilliant and pure, giving off an indestructible feeling.
In fact, it wasn't just a feeling; it was truly indestructible.
At least, when Zhouyang tried using the "Great Derivation Divine Light Sword," he found he couldn't penetrate that layer of golden Spiritual Light!
Bear in mind, this was merely raw material that hadn't undergone any processing or refining!
For a raw material to emit such Spiritual Light that the "Great Derivation Divine Light Sword" couldn't pierce, one can imagine how strong the defense of an artifact refined from such material could be!
