At the same time, light shone from Xuantian's brow. His radiant Primordial Spirit formed a hand seal, drawing lightning around itself.
The flickering arcs made it tremble. His once-mighty Primordial Spirit slowly shrank and dimmed amid the electric light.
It was a process of refinement, like forging iron: impurities were hammered from the raw metal until only its finest essence remained, ready to become the toughest of weapons.
This was a true trial. From body to Primordial Spirit, he hovered on the brink of life and death every moment, tempering both with violent lightning to achieve the deepest transformation.
Agony tore through Xuantian's body. Flesh blasted away, old skin dried and peeled off, and bones cracked and shattered, sending him flying.
Yet his gaze burned brighter. His vitality, energy, and spirit drew tightly together, while pure life force slowly gathered deep within his body.
Inside his brow, his Primordial Spirit was battered, compressed, and refined. Once vast and insubstantial, it began to grow solid, more radiant and flawlessly crystalline.
Xuantian summoned every ounce of vitality, energy, and spirit, focusing all his bodily strength against the might of heaven. Every punch and kick was deliberate and heavy.
At the same time, his Primordial Spirit resonated with his body, punching and kicking alongside it. Flesh and spirit moved as one.
He silently sensed the changes within himself. Old skin fell away, tainted blood drained out, and flesh and bone began to regenerate.
His Primordial Spirit was refined by the ordeal as well. His entire being began to transform.
He felt surging life force within the Thunder Sea and threw back his head with a long roar. Then he punched upward, piercing the sea of lightning. He soared into the air and used his lightning arts to devour the electric light.
Boom!
Heaven