Supreme Immortal Aperture.
Little Central Continent.
Black clouds pressed overhead, lightning flashed, and thunder roared.
Fang Yuan Time Dao Clone stood high in the air, his gaze grave and his expression solemn as he monitored the entire Gu refinement process at every moment, guarding against any mishap.
Beneath the black clouds had originally lain a broad plain, but it was now riddled with deep pits.
Bolts of lightning struck the ground, blasting out hemispherical craters. The soil within had been baked into something like ceramic, with wisps of smoke curling upward.
"The heat is almost right. The main body should be making a move!" No sooner had the Time Dao Clone formed this thought than countless bolts of lightning suddenly converged into one colossal mass!
Boom—!
A pillar-like bolt of azure lightning crashed viciously onto a white boulder at the very center of the plain.
In an instant, the white stone was blasted into fragments, countless shards flying violently in every direction.
The lightning was swift as thunder, abruptly gathering for its strike before vanishing without a trace just as abruptly.
The white boulder, as large as a small mountain, had been destroyed as well, yet a tiny Gu worm hovered in midair.
The Gu worm resembled a butterfly and shone in five colors. It was precisely Man Like Old Immortal Gu.
"After failing six times, it's finally refined. Not bad, not bad!" Fang Yuan Time Dao Clone beamed with joy at the sight.
Man Like Old Immortal Gu had originated from Tai Bai Yun Sheng, and its source could be traced all the way back to Purple Mountain True Lord.
The original Man Like Old Immortal Gu had only been rank 6. It showed obvious effects when healing rank 6 Gu Immortals, but when treating Rank 7 Gu Immortals,