The sea of ​​clouds and the sea of ​​ink, like two happy shooting stars, rushed toward the Demon King, as if they wanted to create the most dazzling sparks in this vast universe and compete with heaven and earth to see who was more powerful.

The sword in Mo Hai's hand gleamed with blue light, its radiance like a joyful blue ocean singing, each ripple brimming with the power of happiness.

The sword, like a lightning bolt piercing the darkness, swiftly slashed down towards one of the demon king's heads.

The sword made a soft "sizzle" sound when it touched the demon's flesh. The sound was like a spring breeze rustling through the grass, or like a soft piece of silk being gently torn, carrying a pleasant power.

Black blood splattered out like black snowflakes, falling to the ground and rising in wisps of thin black smoke. The smoke, like a group of mischievous little elves, drew cute little pits on the ground. These pits were like the interesting marks left by the little elves on the earth, exuding a relaxed and joyful atmosphere.

"Hehe, let's see how long you can keep gloating!" Mo Hai shouted happily. His voice, like a melodious bell, echoed in the sky, making the surrounding air dance joyfully, as if the air itself was infected by the happy atmosphere.

His eyes were filled with joy and determination, a resolve that would not give up until the goal was achieved.

The sword in his hand seemed to transform into a lively little companion, constantly flashing with agile light. Each swing carried effortless power, and when it clashed with the Demon King's weapon, the sound of the impact was like cheerful music, echoing in the sky and causing the surrounding air to ripple with joy, like happy pebbles being thrown into a calm lake, spreading outwards in circles.

Yunhai wasn't idle either; she was waving her hands merrily to the side, her hands like lively little butterflies, fluttering lightly in the air. She was also muttering something, her voice clear and melodious, as if she were chatting with nature.

Streaks of multicolored light flew from her hands, like beautiful ribbons, each shimmering with five colors: red, orange, yellow, green, and purple. They intertwined and floated towards the Demon King like a rainbow.

These lights looked soft, but they were actually quite strong. They wrapped around the Demon King's weapon like many sturdy vines, slowing down its attack speed.

The ribbons and weapons collided, making a "crackling" sound, like setting off firecrackers during the New Year, adding a touch of joy to the fierce battle.

"Honey, I'm here to help you!" Yunhai shouted to Mohai. Her voice was still clearly audible amidst the howling wind and the noise of battle, carrying a cute playfulness and determination, like a little megaphone on the battlefield, cheering everyone on.

Enraged by their attack, the Demon King trembled violently, his enormous body shaking like a mountain during an earthquake.

The three heads roared together, the sound surging like ocean waves, making Yunhai and Mohai's ears ring, as if many needles were pricking their ears.

It brandished its weapon, stirring up gusts of wind that felt like sharp knives scraping against my face, causing excruciating pain, as if my skin was about to be torn apart.

Yunhai and Mohai's clothes fluttered in the wind like flags, but their eyes remained unwavering, shining steadfastly like the brightest stars in the night sky.

“This guy is not easy to deal with!” Yunhai raised an eyebrow and said, but there was no fear in her eyes. Instead, her eyes were shining with excitement. She was just like a warrior who gets excited when faced with a challenge. She was full of fighting spirit, and her eyes seemed to have two small flames burning.

A slight smile played on her lips, revealing a defiant spirit. Mo Hai nodded. "That's right, we can't afford to lose."

As he spoke, he unleashed his magic once more, instantly transforming into a streak of blue light, like a shooting star in the night sky, hurtling straight toward the Demon King.

He easily dodged the Demon King's attacks, like a nimble swallow weaving freely through a hail of bullets, his movements light and agile.

His sword once again aimed for the Demon King's other head. This time, he employed the "feint attack" tactic from Sun Tzu's Art of War. He feigned an attack on the left side of the head, his movements appearing fierce, but it was merely a decoy to draw the Demon King's attention, making it believe the attack was coming from the left. Then, he suddenly turned to the right, unexpectedly striking his target.

This series of movements was incredibly fluid and seamless, showcasing superb combat skills to the fullest. The Demon King indeed fell for the trap; its left head lunged towards the direction Mo Hai was feigning an attack, but it bit nothing. Its massive head crashed into the air with a deafening roar, like thunder.

Meanwhile, the right side of the head was pierced by Mo Hai's sword, which went straight into the demon's eye, causing the demon to howl in pain.

The roar was like a volcanic eruption, so loud it nearly deafened people, and it felt like the whole world trembled. The sword had directly blinded one of the Demon King's eyes, and black blood gushed down like a waterfall. The blood was like black lava, hot and foul-smelling, and it spilled onto the ground. The surrounding air was filled with the smell of death, as if the Grim Reaper was strolling around nearby.

"Wow, well done!" Yunhai shouted happily. Her voice was like a melodious wind chime, which sounded particularly loud in this battlefield full of danger and excitement.

She exerted even more effort, her spiritual power gushing out like a spring, and the five-colored light instantly became even more dazzling, like five lively little dragons shaking their heads and wagging their tails, majestic and awe-inspiring.

The dragon's scales shimmered with iridescent light in the sunlight, each scale resembling a dazzling gem, refracting a mesmerizing glow.

They bound the Demon King even tighter, as if five strong ropes were binding him so tightly that he had no chance to fight back.

Just when the two thought victory was in sight, the Demon King unleashed an unexpected and deadly move.

It opened its terrifyingly large mouth, which seemed like a bottomless pit, as if it wanted to swallow everything in the world.

He exhaled a thick cloud of black smoke, which swept in like a black wave, engulfing the sea of ​​clouds and the ink-black sea in the blink of an eye.

The smoke emitted a foul odor, like a mixture of spoiled food and burning coal; the smell was so nauseating it made one want to vomit, as if it were coming from the underworld.

Yunhai and Mohai felt as if they had fallen into a quagmire, making it difficult to breathe and blurring their vision.

"Wow, this smoke looks poisonous!" Yunhai exclaimed. She quickly held her breath, but the smoke seemed to have a life of its own, constantly trying to get into her mouth and nose, like a group of little insects crawling around inside her body.

She felt her head start to spin, and the world before her eyes became blurry, as if covered by a thin veil; everything felt strange.

Her body also became heavy, as if it were being pressed down by a mountain, and even moving was extremely difficult.

Mo Hai was also affected by the smoke; his movements slowed, and he could barely hold onto his sword. The sword trembled incessantly in his hand, as if it too was suffering from the torment of the smoke.

"Yunhai, are you alright?" he asked anxiously, his voice weak, like a candle flame in the wind, as if it might go out at any moment.

His eyes were full of worry as he strained to look in Yunhai's direction, wanting to see if she was alright.

"I...I'm fine," Yunhai said through gritted teeth, her teeth clenched so tightly it was as if she wanted to chew up all the pain.

She frantically searched for an antidote within the medical space system, moving with lightning speed. Various antidote prescriptions from the *Compendium of Materia Medica* flashed through her mind like slides before her eyes.

Suddenly, her eyes lit up as she remembered one of the antidote prescriptions. She quickly searched for the herbs in the system according to the prescription; the herbs glowed faintly in the system, like a lighthouse in the darkness.

She used her magic to transform the medicinal herbs into a refreshing fragrance, like a gentle spring breeze that softly dispersed the surrounding smoke. Wherever the fragrance reached, the smoke vanished as if it had encountered its natural enemy.

"Wow, that was close!" Yunhai breathed a sigh of relief. She felt as if she had just escaped from the clutches of the King of Hell and returned to this beautiful world.

She looked at Mo Hai and asked, "Darling, are you alright?" Her eyes were full of worry as she stumbled toward Mo Hai, but her gaze was unusually firm.

Mo Hai shook his head. "I'm much better now. We need to take care of this guy quickly." Although his voice was still a little weak, he had clearly regained some strength.

He gripped his sword tightly, his eyes hardening once more, and his gaze toward the Demon King filled with hostility.

The two regrouped and launched another attack on the Demon King. This time, their teamwork was even more seamless, like that of two longtime friends, perfectly in sync.

Yunhai unleashed wondrous magic, creating a massive vortex of spiritual energy around the Demon King. The vortex resembled a giant blender or a black hole in the universe, possessing a powerful gravitational pull.

The vortex spun rapidly, making a whooshing sound like a raging storm. It tightly gripped the Demon King's body, restricting its movements. The Demon King struggled desperately within the vortex, but could not escape. Mo Hai seized the opportunity and unleashed a powerful sword technique. He gathered all his spiritual power into his sword, and the runes on the sword shone with dazzling light, like stars in the night sky.

Those runes were like ancient incantations, containing mysterious and unpredictable power.

He thrust the sword fiercely towards the Demon King's last head, a strike imbued with earth-shattering power, like the giant axe of Pangu splitting the heavens and earth, piercing straight through the Demon King's skull. The instant the sword pierced the skull, a dazzling light erupted, a light like the sun exploding, instantly illuminating the entire sky.

The Demon King let out a final, frustrated roar, his voice filled with anger and resentment, as if he were grumbling about the world.

Then, with a thud, it collapsed to the ground, its body instantly transforming into a cloud of black smoke and vanishing without a trace, leaving only a patch of dark earth as proof of its presence. With the Demon King's disappearance, the protective barrier around the palace returned to peace, and the cracks, as if gently caressed by an unseen hand, slowly closed up.

The light on the barrier shone brightly again, like a glittering ribbon protecting the palace.

"We won!" Yunhai shouted excitedly. She pounced on Mohai like a little bird, and the two hugged each other tightly.

Their faces beamed with victorious smiles, smiles as bright as sunshine, sweeping away the gloom brought by the previous battle.

Their embrace was powerful, as if they wanted to meld each other into their own bodies, feeling each other's heartbeats and warmth. One by one, the guests emerged from the palace, gazing at Yunhai and Mohai with eyes full of admiration and blessings. Their eyes shone like bright stars, radiating joy.

"Congratulations, that's wonderful!" a winged fairy said with a smile, holding flowers in her hand, which she tossed towards the sea of ​​clouds and the sea of ​​ink. The flowers floated in the air, their petals falling like colorful snowflakes, landing on the sea of ​​clouds and the sea of ​​ink, adding a touch of romance to their scene.

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