"Boom, boom, boom...!"
Inside Gu Chenfeng, the Heaven-Opening Creation Art operated at full power.
Streams of lightning essence surged like rolling rivers, gathering tremendous momentum as they wound and rushed along.
Finally, they poured out and exploded at the location of the Eighteen Profound Apertures.
All to break through that invisible acupoint.
Yet the Eighteen Profound Apertures were far sturdier than expected, like a natural chasm that could scarcely be shaken.
Even beneath the concentrated bombardment of lightning essence, it merely stirred up faint eddies. The sealed profound aperture trembled slightly, without even a single crack.
Sensing all this, Gu Chenfeng on the Enlightenment Platform steeled his heart and pushed the Heaven-Opening Creation Art's operating efficiency to its limit.
Disregarding the consumption of lightning essence, he battered the profound aperture faster and harder.
In an instant, the force of the lightning assault soared.
"Rumble...!"
Under this wildly pouring bombardment of lightning, the profound aperture finally began shaking more violently.
After a long while, an almost imperceptible crack appeared.
Gu Chenfeng rejoiced inwardly, but did not relax in the slightest. Instead, he increased the force of the assault a little further.
Opening a profound aperture was an act against heaven to begin with. Unless he tore through its seal and pierced the acupoint completely, the profound aperture would soon seal itself again.
Not only would all his previous efforts be wasted, but on a second attempt, the Profound Aperture's seal and sturdiness would be even more formidable.
Thus, Gu Chenfeng had to accomplish it in one sustained push!
Gu Chenfeng on the Enlightenment Platform was frantically mobilizing lightning essence to assault the profound aperture.
Outside, Gu Chenfeng's true body had long since unleashed full firepower, wielding the Mountain-Splitting Battle Axe as he slaughtered Half-Saint Thunder Beasts.
Using his own aura to