"Finally, I have come to this point!"
Ye Feng looked at the line of text that read "Upgrade Energy: 103.4%", stretched out his hand, and clicked to upgrade.
Hum!
The seven-colored auspicious clouds began to retract inward, penetrating the refining furnace, causing the array patterns on the surface to glow and heat up, becoming even more intricate and sophisticated, as if undergoing a metamorphosis.
There were even specks of black ash falling off its surface.
"The upgrade has started!"
Ye Feng waited patiently.
But soon, he noticed something unusual.
Above the firmament, rolls of black tribulation clouds gathered and converged above the peak of Misty Peak. Despite the distance of several kilometers, there seemed to be heavenly thunder striking down, leaving Ye Feng astonished.
"No way! The refining furnace is advancing to a supreme grade spiritual artifact and it has to transcend the Nine Heavens Thunder Tribulation?"
Ye Feng was speechless.
