In the rear hall of Biyou Palace on Golden Ao Island.
Daoist Duobao stood before the Great Sun Origin floating in midair.
Even though Qin Mu had already laid down an isolation formation, the extreme heat wave belonging to the Tenth Era's ruler still scorched the edges of Duobao's Daoist robe until they curled slightly.
This was Lu Ya's supreme foundation, accumulated over countless eras.
Pure pure-yang laws churned within the orb like magma, unleashing terrifying energy capable of incinerating a Great Thousand World.
Duobao did not hesitate.
He drew a deep breath. Dharma power surged through his entire body, and Shangqing immortal light transformed into a massive vortex that swallowed the Great Sun Origin whole.
Boom.
A muffled explosion erupted within Duobao's body.
The instant the Great Sun Origin entered him, its violent era power charged into his limbs and bones like a wild horse breaking free of its reins.
Dense golden flame markings instantly surfaced across Duobao's skin.
His once-rotund body shook violently, while his bones ground together with a teeth-aching rasp.
Power of this level was not something the body of a peak Quasi-Saint could bear with ease.
Qin Mu stood at the side with his hands behind his back, a wisp of azure creation law flowing around his fingertips.
But he did not intervene at once.
This was a transformation Duobao had to undergo to attain the Dao. Only by using this era-fire to burn away his original mortal foundation completely could he forge a true Primordial Zenith body anew.
Duobao clenched his teeth hard, veins bulging across his forehead.
He frantically circulated Shangqing Immortal Techniques, guiding the Hongmeng Purple Qi that had lain dormant within him for countless years.
A hazy purple aura spread from the depths of his Primordial Spirit.
The Foundation of Sanctification