Southern Border, Wu Clan.
Inside the cultivation secret chamber, Fang Yuan floated in midair, his face solemn.
His long hair drifted in the air, while the various auras of Gu worms throughout his whole body continuously rose, tangling and blending together.
"The crucial step..." Fang Yuan murmured inwardly, his gaze sharpening.
He cautiously activated a mortal Gu.
This was a metal path mortal Gu, only Rank 1.
Activating this Gu alone naturally carried no risk. But the current situation was different.
A muffled bang came from Fang Yuan's body.
Fang Yuan immediately trembled violently as though struck by lightning, his face turning pale as a trace of bright red blood spilled from the corner of his mouth.
"Failed again." He heaved a great sigh inwardly.
He descended from midair to the ground, supporting his chest as he checked his injuries.
"Fortunately, I only used one Rank 1 mortal Gu. This injury is no great matter; there is no need to use Man Like Old Immortal Gu to heal it. With the Supreme Immortal Body's powerful recovery ability alone, I will recover in two or three days."
Fang Yuan was attempting to further improve the Solid Shell killer move.
The Immortal Dao Killer Move Solid Shell used the Rank 6 Immortal Gu Diamond Thought as its core. Fang Yuan had relied on this killer move, along with his schemes, to successfully defeat Xia Family Gu Immortal Xia Feikuai.
Afterward, Fang Yuan had always felt that this killer move had not yet exhausted its potential and still had room for improvement.
Fang Yuan took this feeling seriously.
He knew that, with his dual grandmaster attainments in wisdom path and transformation path, this feeling did not arise from an Empty Hole. It had great practical value.
"Unfortunately, although these days of deduction and