A pale golden spiritual energy barrier rose around Zhao Yun, its light flowing as it shielded him within.
With a wave of his hand, several sharp spear radiances whistled forth, striking the massive boulders about to fall from above with unerring precision.
In an instant, the enormous boulders turned to dust, scattering through the air.
Then Zhao Yun flashed forward, becoming an afterimage as he sped toward the depths of the Mine Tunnel.
As he continued deeper, the Mine Tunnel shook ever more violently, and the entire ground trembled.
The rock walls around the Mine Tunnel could no longer bear the strain either, and cracks began to spread across them.
Soon, great swathes of rubble rained down like droplets in a storm.
Yet to Zhao Yun, all this was nothing more than a trivial hindrance.
Even if he did not attack, these falling rocks could not harm him in the slightest.
His figure moved freely through the Mine Tunnel, so fast that even the constraints of space seemed to have no effect on him.
In only a moment, Zhao Yun reached the deepest part of the Mine Tunnel.
But the sight before him made him raise an eyebrow slightly.
This mine vein, once abandoned and silent for countless years, was now emitting a dazzling dark golden glow.
Clearly, this long-abandoned mine vein had somehow revived.
Zhao Yun silently watched the strange scene. The dark golden light reflected off his resolute face, lending him an added air of mystery.
Within that dark golden radiance, a torrent of liquid metal surged endlessly like a giant dragon awakening after a thousand years of slumber, giving off a low rumble.
"Crimson Flame Spiritual Gold! It really is good stuff!" A flicker of delight crossed Zhao Yun's eyes.
Crimson Flame Spiritual Gold was a high-grade