"Little sister! Little sister!" Yu Kai was not interested in Wu Jin's changes at this time, and shouted loudly towards the bottom.

Deep underground, beneath the shadow of the Heavenly Demon Tower, within the Nine Nether Prisoner Formation, Lin Niuniu was bound tightly by countless chains. Like ravenous venomous snakes, these chains continuously devoured her spiritual energy, causing her cultivation to plummet to the early stages of the Saint King realm. Yet, she sat cross-legged, her face calm, unfazed.

Suddenly, Yu Kai's voice was heard, and Lin Niuniu's heart was excited, and a hint of joy flashed in her eyes.

"Hey! This guy actually came to find you! What? Are you going to come out early?" The evil voice sounded in Lin Niuniu's mind, with a hint of ridicule.

"Leave my business alone!" Lin Niuniu responded coldly, a hint of chill in her voice. Her body shimmered with light, and streams of spiritual energy flowed back from the chains, as if she were engaged in an invisible battle with the formation.

"Of course, you have refined the innate formation of the Nine Netherworlds!" There was a hint of surprise and joy in the evil voice.

"If your cheap elder brother can help you kill the Son of Jiuyou, wouldn't you be able to use this innate formation to refine the entire Jiuyou? Wow! Then your strength might be able to recover to the early stage of Dao Emperor!"

"Your cheap brother is really good, but I don't know if he can be a match for the Son of Jiuyou. After all, this is the land of Jiuyou!" The evil voice continued, with a hint of gloating in its tone.

Lin Niuniu frowned slightly, and a trace of worry appeared in her eyes.

Wu Jin is no ordinary person. He is the son of Jiuyou, born in the Jiuyou land. Here, he can mobilize the power of Jiuyou at will and is almost invincible.

Instantly, a plan came to her mind. The Chaos Origin Seal from the Soul Sea slowly flew out and hovered above her head. The entire formation was imprisoned by it, and the spiritual energy that was flowing back became faster, and her strength began to recover.

"Hey! Are you giving up the Nine Netherworld?" The evil voice teased again. But Lin Niuniu ignored it and focused on recovering.

Above, Yu Kai and Wu Jin were already engaged in a fierce battle. Wu Jin, wielding the World-Burning Halberd, swung out a dark purple blade, carrying a devastating force as he clashed with Yu Kai's Moon Spirit Sacred Sword. The entire Chaos Demon Realm was like the end of the world, the sky and earth changing color, lightning and thunder roaring.

The gusts of wind released by the battle between the two men caused large sections of houses to collapse, making a deafening roar and billowing smoke and dust.

Countless members of the Dark Abyss Demon Alliance died tragically in the battle because they were unable to dodge. Their bodies exploded one after another, and the strong smell of blood was everywhere.

"Boom!" With a loud noise, Yu Kai and Wu Jin both retreated, and the Heavenly Demon Tower, which was personally refined by the three great demon lords, also collapsed.

Both sides were injured. A bloody hole appeared on Yu Kai's left shoulder, and blood flowed out, staining his clothes red. A sword mark appeared in the pentagram between Wu Jin's eyebrows, and blood flowed down his cheek, making him look extremely hideous.

"A truly remarkable figure, second on the Tianjiao Ranking, capable of breaking my pentagram. This is my first innate magical power, but I wonder if you can block my second!" Wu Jin sneered. His eyes shifted, the left dark purple, the right crimson, and simultaneously, a blinding light erupted, converging upon him as the entire Nine Netherworld's power converged.

"Demon Eyes of the Abyss!"

In an instant, the dark purple power of annihilation and the scarlet burning fire merged into a vortex of strong energy light. Wherever it passed, the earth cracked and collapsed, and buildings instantly decomposed into dust; the air was ignited to form a flame storm, and all life that came into contact with the energy wave was quickly reduced to ashes, until the area within a thousand miles was completely reduced to scorched earth and ruins, and even the space was left with twisted energy cracks.

Yu Kai immediately activated his Chaos Physique and had just performed "Disaster Destruction". At this moment, he suddenly slashed out the "Chaos Collapse" that he had prepared.

The sword's radiant light shook the earth, splitting the light of the Abyssal Demonic Pupil in two. Wu Jin fled in terror. Wherever the sword's light passed, the void shattered, and the statue of the Demon Lord, still standing in the central square, exploded. Wu Jin was struck in the back by the sword's radiant light, and fell to the ground with a scream.

The light of the demon pupil that Yu Kai had slashed open exploded on both sides, and Yu Kai was shocked, spitting out blood and falling backwards. Both men were injured again, watching each other from afar, quickly recovering from their injuries while brewing new ultimate moves.

Lin Niuniu, underground, had already recovered to her peak Venerable status, but the cessation of the fighting above made her extremely worried. The sinister voice echoed in her mind again: "Is that cheap brother not dead?"

"Shut up! Even if Wu Jin dies, big brother won't die!" Lin Niuniu immediately sensed through the Chaos Return Seal and confirmed that Yu Kai was fine, then she breathed a sigh of relief.

"Hmph! You care about him so much. If the master knew, I wonder how he would punish you!" An evil voice snorted coldly.

"I will definitely destroy your clone before my master knows about it!" Lin Niuniu said coldly.

On the Thirty-Third Heaven, Xu Mizi, riding on the Chaos Donkey, was giving instructions to the Three Great Demon Lords: "Since entering the battlefield, you have been relatively honest and dutiful, not forming alliances with the Devouring Emperor and his gang, and have repeatedly made achievements on the battlefield. Now that both sides have reached a truce, I will grant you a six-month leave today. During this six months, you must not act recklessly. After six months, you must return to the Thirty-Third Heaven to defend Asia."

The three originally honest demon lords suddenly showed a fierce look in their eyes: "We all understand!" They clasped their fists together, and without waiting for Xu Mizi to speak, they flew towards the Honghuang Immortal Realm.

"Master, these three demons are too rude! Do you want to catch them back?" Chaos Donkey immediately became dissatisfied.

"Strange!" Xu Mizi immediately took out the Yin-Yang fish inkstone and started to deduce quickly.

"What's the matter, sir?" Chaos Donkey asked immediately after seeing Xu Mizi's deduction.

"A great battle is going on in the Nine Netherworlds, and their statues of the three great demon lords have been smashed!" Xu Mizi asked in confusion.

"Who is it? Is it the one-eyed flying snake that just escaped?" Chaos Donkey's eyes lit up.

"No, it's Yu Kai who was suppressed by Tathagata. When did this kid come out? He actually has the strength of a mid-stage Great Emperor!" Xu Mizi said in confusion.

"What? This kid has the strength of a mid-stage Great Emperor. Is he being suppressed? He's almost as strong as Zhang Qiming, who was personally trained by Taoist Hongjun!" Chaos Donkey exclaimed.

"It's strange. What's so special about this kid that he made such a breakthrough so quickly? And why did the ninth princess of Asia specifically look for him?" Xu Mizi said, stroking his beard.

"Also, why did Taoist Hongjun lie to the Ninth Princess? The entire prehistoric world was under his control, so why did he say that Yu Kai was dead instead of handing him over?" Chaos Donkey also began to analyze.

"It seems that Yu Kai has a big secret. We should pay more attention to him!" Xu Mizi looked towards Zixiao Palace and said softly.