Gu He did not rush to have the residual shadow form the sixth formation. Instead, he had it keep practicing the fifth formation. Sword qi shot into the sky throughout the magma.
Seeing that the disturbance was quite considerable, he had it move farther away.
Whenever the residual shadow vanished from practicing the Profound Gang Spirit Splitting Sword, he summoned another one. This cycle repeated until the fifth formation held no more secrets from him.
Gu He looked at Qing. The Fallen Heart Flame within his body had almost completely disappeared, leaving only a few finishing touches. It could no longer stir up any trouble.
Rising to his feet, Gu He personally stepped out of the spatial barrier and entered the outside world.
He began practicing the sixth formation of the Profound Gang Spirit Splitting Sword himself. To his surprise, he almost effortlessly unleashed all six formations. Even Gu He, who had been prepared to put in some hard work, was stunned.
But on second thought, it was only natural. The Profound Gang Spirit Splitting Sword was ultimately just an Earth-grade advanced Dou Technique. After breaking through to the Dou Zun realm, every aspect of a person underwent tremendous growth. Since he had already cultivated the Profound Gang Spirit Splitting Sword to a high level, crossing the final threshold was practically effortless.
If he wanted to further increase the Dou Technique's power, he could only deduce the remaining seventh formation.
Only after moving some distance away from the opening above the magma did Gu He fully unleash the six formations of the Profound Gang Spirit Splitting Sword. The space above the magma, enveloped by the formations, shattered inch by inch like glass. Countless black cracks appeared. Anyone below the Dou Zun level would likely be killed by those spatial cracks