Simultaneously unleashing the Thunder Emperor Treasure Art and the True Dragon Treasure Art, Kai's face was somewhat pale, as the consumption was too great.
However, taking advantage of this opportunity, Kai could quickly recover the spirit power within his body, and in front, terrifying thunderclouds already filled the sky, with no one knowing what was happening inside.
"Such powerful strength..."
From afar, the Girl in Black looked at Kai in shock.
Is this really a Spirit Emperor?
The terrifying fluctuations in front continued for a few minutes before gradually dissipating, and then a figure walked out from within, seemingly unharmed. Seeing this, the Girl in Black's face was somewhat pale.
Indeed, no matter how strong Kai was, he was only a Spirit Emperor now, so how could he be a match for the Slaughter King?
"You... are very good..."
The Slaughter King's voice carried a hint of tremor; although he seemed unharmed, his arm showed faint signs of shattering, with blood dripping.
In her hand, there was a uniquely shaped heavy hammer, resembling the Clear Sky Hammer, yet more like a great sword, emitting a monstrous bloody light, like an asura from Hell.
"Have you finally brought out the asura sword?"
Kai flipped his palm, once again conjuring the Chaos Splitting Axe.
Facing the asura sword, the Chaos Splitting Axe, at this moment, erupted with its most formidable power, even letting out bursts of humming, as if in disdain.
The asura sword also emitted a bloody light.
The Chaos Splitting Axe glowed all over, seemingly conveying some meaning to Kai.
"You want to destroy that asura sword?"
Kai smiled, understanding the Chaos Splitting Axe's meaning.
As the strongest weapon in the world, how could it allow a mere asura sword to challenge it?
Chaotic Aura enveloped Kai's body, completely protecting him. Looking at the Slaughter King, who was also holding the asura sword, the Vermilion Bird Wings behind Kai were gradually replaced by a pair of golden wings carrying endless Yin and Yang power.
The fifth spirit ring beneath Kai's feet also ascended at this moment!
"Fifth Spirit Skill, Kunpeng Treasure Art!"
The Kunpeng Wings behind him suddenly unfurled, unleashing the ultimate speed in the world, crossing a thousand meters to land in front of the Slaughter King.
A surging torrent rose behind Kai, his body transforming into a Kunpeng, carrying the power of Yin and Yang and the power of Chaos. These two supreme powers gradually converged at this moment, circling around Kai's body.
He held nothing back, going all out.
"Boom!"
The battle in the sky began anew.
This battle was clearly more intense than the previous one.
The Slaughter King was directly forced to draw the asura sword, which showed that Kai's attack truly made him feel the threat of death.
No matter how much he racked his brain, he couldn't understand why a Spirit Emperor would possess such terrifying power.
The two fought until the Slaughter City trembled violently.
Bloody light and powerful force continuously collided, and within them, the Chaos Splitting Axe and the asura sword also clashed.
However, this battle made the Slaughter King increasingly alarmed as he fought.
The incredibly powerful asura sword seemed unable to unleash its full strength when facing the Chaos Splitting Axe. With his power, he could even sense that this battle was no longer a fight between him and Kai.
Instead, it was a battle between the Chaos Splitting Axe and the asura sword!
"Boom!"
Sure enough, the next moment, the asura sword flew out of his hand, actually charging towards the Chaos Splitting Axe.
Kai was stunned when he saw this.
"Ignorant."
Kai simply let go of the Chaos Splitting Axe, and for a moment, the Chaos Splitting Axe seemed to be unleashed, unleashing a powerful force that shattered space, clashing with the asura sword in the air.
And Kai also attacked again.
Facing a Peak expert like the Slaughter King, he had to go all out; once he showed a flaw, he might be the one to lose.
"Ah! Slaughter world!"
The Slaughter King roared, and the surrounding bloody light completely condensed into a unique Domain. Within this, the Slaughter King's power became even stronger.
He blasted towards Kai, the spirit power within his body surging out overwhelmingly, exuding a powerful might.
The Kunpeng Wings behind Kai violently vibrated, and endless runes erupted in the sky, all transforming into kunpeng divine feathers that fell into the sky. The sky-filling kunpeng divine feathers seemed capable of shattering everything, cutting off all light!
"Dong!"
Dull collision sounds continuously emanated.
Kai's body was as if immortal light was falling, and terrifying Spirit Abilities were thrown out without reservation.
This battle lasted for an unknown duration.
Accompanying a bloody light appearing in the sky, the surroundings seemed to solidify.
Suddenly, someone saw.
The asura sword was blasted, trembling all over, all its light dissipated, and it fell to the ground.
"What..."
The Slaughter King looked incredulously at the asura sword on the ground, unable to believe that even the asura sword was no match for that axe.
Kai scoffed, "This asura sword insisted on provoking the Chaos Splitting Axe; it was simply asking for trouble."
The Chaos Splitting Axe returned to Kai's hand, its surging aura gradually calming down. Then, Kai looked at the Slaughter King and chuckled, "How about it? Do you want to continue?"
The runic light around Kai's body gradually dissipated. It turned out that during the previous collision, he had already used his Second Spirit Skill: bell of years, to withstand the Slaughter King's terrifying attack power.
The Slaughter King's face was grim; his chest was wounded, with a terrifying gash that could even reveal his heart.
"How is that possible..."
The Slaughter King's chest heaved violently, his eyes filled with murderous intent that permeated the sky, containing a hint of madness.
But in the end, the Slaughter King still compromised.
Even if he could kill Kai, he would definitely pay a price, and behind Kai, there was another God of Slaughter.
"Take her and leave. You win."
The Slaughter King's grim voice echoed throughout the entire Slaughter City. This battle had made him lose face completely. Then, his figure transformed into a bloody light and disappeared into the sky.
After the Slaughter King left, Kai finally breathed a slight sigh of relief, blood oozing from the corner of his mouth.
The battle just now had still wounded him.
A ninety-ninth-level Peak expert, even the terrifying aura she exuded, made him feel immense pressure.
"Are you alright?" The Girl in Black quickly ran over, startled by the blood at the corner of Kai's mouth.
"Just a minor injury. Let's go, I'll take you to see the outside world."
Kai said with a smile, taking the Girl in Black and leaving the Slaughter City.
In the distance, the Slaughter King's figure reappeared, his blood-red eyes looking in the direction Kai had left, and he whispered, "What a terrifying King of Hell... This guy is even more terrifying than the God of Slaughter behind him... It's better not to form a mortal enmity with him.".