"My original plan was to gradually wear down her power using my own strength!"
"But the evil energy clinging to her is like maggots in bones - no matter how much I erode, it keeps regenerating. As my energy depletes, the evil energy on her only grows worse!" The Moon Goddess frowned deeply. This thing was too bizarre, incredibly difficult to purge!
"This isn't demonic energy. What exactly is it?" Long Yuan asked in confusion. Demonic energy was uniformly pitch black, yet he remembered no trace of it during their last confrontation.
"This should be called evil energy!"
The latter snorted coldly, black-and-white Yin-Yang energy coiling around his palm before he struck forward. The palm descended like a celestial gate, swirling Yin-Yang energy transforming into a massive Taiji diagram. Upon the diagram, two celestial dragons - one Yin, one Yang - spiraled, their draconic might palpable. This was the Yin-Yang Celestial Dragon Diagram, the innate divine ability of the Yin-Yang Celestial Dragon!
"Suppress!" With Long Yuan's command, the diagram instantly materialized above the creature's head. Countless strands of Yin-Yang energy descended, coiling around the creature to erode its evil energy!
"Yin-Yang energy?" The creature growled, its fists erupting with terrifying bloodlight to strike the diagram above. Under this power, its own energy was being gradually refined away. Chaos, Yin-Yang, and the Five Elements were the fundamental forces of creation, capable of eroding all things! At this rate, it would be completely eradicated from its host body!
Yet after being suppressed by the Moon Goddess for millennia, its current strength was insufficient to break the diagram's defense. It could only watch helplessly as the Yin-Yang energy eroded its power. Left with no choice, it retracted all blood-hairs, the faces' mouths gaping wide to devour the Yin-Yang energy instead!
Long Yuan frowned. This abomination could do that too? Worse, as it fed, one face's forehead began manifesting the Taiji diagram's pattern!
"Hehehe, dragon, let your Yin-Yang energy become my strength!"
"The might of our race is beyond your comprehension!" The creature cackled triumphantly as hundreds of faces began voraciously absorbing Long Yuan's Yin-Yang energy.
"Beware! This race can absorb any elemental energy. Once assimilated, they gain immunity to that element!" the Moon Goddess warned. If it obtained Yin-Yang energy, Yin-Yang based attacks would become useless!
Long Yuan's frown deepened. In that case, he'd have to rely on raw cultivation to suppress it. Killing it would be easy at his current level, but that wasn't his goal. Immediately, the diagram vanished along with the Yin-Yang energy. Long Yuan ceased elemental attacks, switching to pure energy instead.
Indeed, without any elemental attributes, the creature couldn't absorb it, letting out piercing shrieks of agony! Soon, one of its blood-hairs melted away completely.
Long Yuan's brow furrowed. He was at the World-Creation Realm while this creature only matched Immortal-tier strength. Even with such disparity, purging the evil energy remained this difficult. Against an equal opponent, it'd be nearly impossible!
Ceasing his assault, Long Yuan addressed the Moon Goddess: "If you don't mind, I suggest returning aboveground to continue this purification. I suspect this will take considerable time."
"Moreover, there's a Chaos Essence Vein above that can restore your strength quickly."
"Additionally, among those I protect, one has inherited the Star God's legacy. I believe you'd find him interesting."
Given her title as Moon Goddess and the creature's former identity as Sun God, Long Yuan wondered if this Star God was connected to them.
"What? Someone obtained the Star God's legacy?" The Moon Goddess's expression shifted to shock, her voice urgent. "Are you certain?"
"Absolutely. He also acquired a Star God Palace."
"And a Wild God Palace too," Long Yuan confirmed.
"How is this possible?"
"How could Star God and Wild God have left legacies?" The Moon Goddess's slender frame trembled slightly, clearly deeply affected. Normally, legacies were only left upon death. Did that mean they...?
"Impossible! They both survived the great calamity and should be in the Supreme Divine Realm with Senior Pan!"
"Why would they leave legacies?" Moreover, when had they done so? She'd been in this spatial world for eons yet never sensed their presence. Had something happened? The Moon Goddess realized she hadn't seen them in all these years. Could they truly be in trouble?
After contemplation, the Moon Goddess ultimately followed Long Yuan out. Staying here made no difference, and having a place to recover her strength was preferable. Long Yuan summoned the Myriad Dragons Pagoda, sealing the Sun God's corrupted form inside to purify later at the Dragon Emperor Palace.
Emerging from the lake's realm, the Moon Goddess observed the falling demonic figures in the sky. "These creatures are growing restless again."
"What connection exists between the Demon Race and your Extra-Terrestrial Evil Race?" Long Yuan inquired.
"None. The Demon Race originates from our universe - they're simply too violent and bloodthirsty to coexist peacefully."
"However, during the war against the Extra-Terrestrial Evil Race, their combat prowess made them key forces."
"They played crucial roles in that conflict."
"But after the war, their warlike, murderous nature remained unchanged, leading them to attack other races."
"Thus they were all sealed within the Demon World!"