"Everyone, attack together! Form the Hundred Fiends Formation and destroy him!"
Even as he spoke, Advisor Tiangu was secretly sending sound transmissions to the other Ancient Demon Race higher-ups.
One after another, the old monsters began to shift their positions stealthily, preparing to form the Hundred Fiends Formation.
"Still trying to use that formation against me, are you?"
Seeing this in his periphery, Ye Yunfei couldn't help but sneer coldly.
"Attack!"
The next moment, the Hundred Fiends Formation took shape. Within the square, one hundred of the strongest Ancient Demons simultaneously activated the formation, launching a coordinated assault at Ye Yunfei.
Surges of tsunami-like demonic energy shook heaven and earth as they roared toward Ye Yunfei with overwhelming power, resembling towering tidal waves.
Ye Yunfei remained remarkably calm. With a flick of his sleeve, an ancient seal engraved with the sun, moon, and mountains flew out, suddenly enlarging.
*Boom!...*
An utterly terrifying energy poured forth from the ancient seal. Space itself seemed to shatter at that moment. The ground shattered, stones flew like clouds, and heaven and earth lost their color.
*Rumble rumble...*
The formation's attack and the energy released by the seal collided violently, producing a fearsome effect. Infinite energy waves exploded continuously, almost pulverizing everything nearby. The black square, originally protected by layered formations, was now reduced by half.
"What kind of artifact is that?!"
The Ancient Demon Race leaders were stunned.
How frightening was the combined attack of a hundred old monsters forming the Hundred Fiends Formation? Even the Three Great Demon Kings wouldn't dare meet it head-on. Yet now, it had been effortlessly blocked by a single magic treasure.
Staring at the ancient seal before Ye Yunfei, the demon leaders were filled with extreme apprehension.
"Good effect. Truly worthy of an Innate Treasure."
Ye Yunfei gave a faint smile.
"Huh? This treasure..."
Suddenly, Advisor Tiangu's gaze scrutinized the ancient seal suspended before Ye Yunfei, suspicion flashing in his eyes.
"Ye Yunfei! Where did you get that treasure?! That belongs to our Demon Race!"
Advisor Tiangu demanded angrily.
"Belongs to our Demon Race?"
The other demon leaders were taken aback by his words.
"This treasure is clearly mine. Who says it belongs to your Demon Race?"
Ye Yunfei retorted with a cold laugh.
"This ancient seal actually contains the demonic energy laws of our race! And what's more, it's engraved with the totem symbols of our Demon Race! It absolutely belongs to us! Is it possible... this treasure is precisely the Innate Treasure the lord from the Ancestral Realm was transmitting to our Ancient Demon Race?!"
Advisor Tiangu exclaimed.
The Innate Treasure transmitted by the Ancestral Realm lord!
Upon hearing this, the gazes of every demon leader locked fiercely onto the ancient seal before Ye Yunfei.
"Correct! This is an Innate Treasure! Only an Innate Treasure could possess such power!"
Soon, the Three Great Demon Kings all voiced their confirmation.
So the Innate Treasure sent by the Ancestral Realm lord had fallen into Ye Yunfei's hands!
In that moment, these Ancient Demon leaders finally understood.
*Roar! Roar!...*
Immediately, roars of anger erupted one after another.
The eyes of every Ancient Demon leader, now fixed on Ye Yunfei, began to turn bloodshot. Billowing fury rose from each of their bodies.
This was an Innate Treasure! And it had been snatched away halfway! And the one who snatched it was Ye Yunfei, the mortal enemy of their race! This feeling was utterly unbearable!
"Ye Yunfei! This treasure belongs to our Ancient Demon Race! Hand it over immediately! Otherwise, there will be no end to our feud with you—death for one side only!"
Advisor Tiangu fixed a deadly stare on Ye Yunfei, emphasizing each word.
"I'll say it again: this treasure is mine. What's more, even if your Ancient Demon Race wanted to cease hostilities, it is *I* who declare a feud to the death with *you*."
Ye Yunfei responded with another faint smile.
"Attack! Retrieve the Innate Treasure!"
The Three Great Demon Kings, enraged to the extreme, roared in unison.
The next moment, the demon leaders reactivated the Hundred Fiends Formation. Wave after wave of violent demonic energy tore through space, streaking toward Ye Yunfei like torrential rain.
This time, Ye Yunfei did not use the ancient seal to resist. Instead, he employed his spatial energy and directly delved into the depths of space, vanishing from sight.
After cultivating for some time within the spatial rift, the Roc's spatial energy had advanced significantly. Now, even within space like that of the Ancient Demon Realm which was saturated with demonic energy laws, Ye Yunfei could remain in the spatial depths for quite some time.
Moreover, with an expert in spatial energy like the Golden-Horned Dragon Silkworm by his side, Ye Yunfei felt much more assured. He would never be as helpless as he had been in the northern region of the Ancient Demon Realm!
"I'll force him out! You all use the Hundred Fiends Formation to deal with him!"
Advisor Tiangu planned to employ the same method he had used previously against Ye Yunfei.
A pair of demonic claws swiftly formed hand seals. Demonic runes flew out from the spell symbols, seeping into the surrounding space.
Moments later...
*Rumble rumble...*
Deep within the spatial fabric, vast amounts of demonic energy laws began to boil and roar, rushing violently towards Ye Yunfei.
*Swoosh...*
The Roc appeared, enveloping Ye Yunfei's body. The surging demonic energy laws crashed against the Roc's form and were rebounded away.
Ye Yunfei was not significantly affected!
"It seems... ineffective."
Advisor Tiangu exerted his magic for a while, only to realize he could not force Ye Yunfei out from the depths of space.
After a few breaths, Ye Yunfei suddenly reappeared, materializing behind several Ancient Demon higher-ups.
*Boom!...*
Ye Yunfei activated the ancient seal and hurled it forward.
Instantly, terrifying energy surged violently, like successive thunderclaps continuously exploding. Wherever the ancient seal passed, the bodies of those demon leaders instantly turned to dust!
"Damn it!"
The remaining demon leaders were seething with rage, launching frantic attacks toward Ye Yunfei's position.
But, holding the ancient seal in hand, Ye Yunfei mobilized his spatial energy, stepped into the void, and disappeared once more.
The next moment, he appeared at another location, hurling the seal from his hand. Rolling energy churned violently.
This time, a total of seven Ancient Demon leaders with Soul Formation Realm strength had their bodies blasted apart, their physical forms and souls annihilated.
It had to be said, the power of an Innate Treasure was far too terrifying. It was simply not something a Soul Formation Realm cultivator could withstand!
"Damn you!"
"Stop!"
The remaining demon leaders were furious, their eyes nearly bursting with rage as they roared incessantly, desperately charging toward Ye Yunfei.
But Ye Yunfei simply dove back into the depths of space, vanishing yet again.
The next instant, he reappeared in yet another position and sent the seal in his hand smashing outward.
*Rumble rumble...*
Energy detonated blast after blast. Five or six more Soul Formation Realm demon leaders were blasted apart on the spot.
By this point, the Hundred Fiends Formation was practically broken. Even if not entirely breached, it could no longer threaten Ye Yunfei. He could cross into the spatial void at will, effortlessly evading the formation's attacks.
"Roar! Damn it! This Innate Treasure belongs to our Ancient Demon Race! Ye Yunfei! How dare you use it to slaughter experts of our race!"
"You little bastard! I won't let you go!"
The Three Great Demon Kings were hopping with fury, and the other demon experts were each enraged to the extreme.
"Go to hell!"
Aoyue Demon King's figure shot forward like a demonic streak of light, swift as lightning as he charged toward Ye Yunfei.
"Old Demon Aoyue! The time has come to finally confront you!"
Ye Yunfei's gaze turned sharp as he stared at the onrushing Aoyue Demon King.