While the player is in Battle Through the Heavens, the system is in The Great Ruler.

Chapter 146 The Colorful Scales Return to Their Hearts, Seven Stars Fighting Sect!
"Hundreds of princes, that King Bailing is really prolific..."

Looking at the simulation results, Lu Yu couldn't help but sigh.

It should be noted that the higher one's cultivation level, the more difficult it is to conceive offspring. As cultivation level increases, the difficulty of conceiving offspring also increases exponentially. As far as he knows, it is still relatively easy for supreme experts in the Great Thousand Worlds to conceive offspring, but once they step into the Earthly Supreme level, their physical bodies have undergone tremendous transformations, making it very difficult for them to conceive offspring.

Even the master of the Xuantian Palace in the northern border of Tianluo Continent has only conceived two offspring in hundreds of years.

There are not a single other Earthly Sovereign of the same level in the Northern Realm.

As the offspring of the Heavenly Supreme, Bai Lingwang was the only son of Bai Lingwang's parents.

"After hundreds of years, even with the backing of two Heavenly Sovereigns, he's still only a Lower Earthly Sovereign. The Hundred Spirits King has been spoiled rotten..."

Lu Yu shook his head, then looked at the simulation options, pondered for a moment, and finally chose Ice Soul Frost Flame.

"Although the Heavenly Spirit Essence can improve the quality of a spiritual vein, it is not a necessity for me. It would be better to choose the Yin-cold attribute Ice Soul Frost Flame, so as to create a different kind of fire spiritual vein for Qinglin and Cailin..."

Having said that, Lu Yu's mind stirred, and in an instant, a crystal-clear ice jade box appeared out of thin air. The box emitted wisps of cold air, and its surface was covered with fine ice crystal patterns.

As the lid slowly opened, the temperature in the entire space suddenly dropped, and a thin layer of frost instantly formed on the ground.

A single, icy blue flame floated silently within, its shape resembling a blooming ice lotus, each petal shimmering with a crystalline blue light. An extreme chill emanated from it, spreading outwards, and even tiny ice crystals began to condense and drift in the air.

Yet, hidden deep within this biting cold lies a kind of heart-pounding, intense energy; two completely opposite qualities blend perfectly together.

A Dou Zong-level flame, the Ice Soul Frost Flame!

"A Dou Zong-level fire seed, not bad, just what I wanted..."

Lu Yu's eyes lit up, and he immediately waved his hand, and the jade box fell into his palm.

He gazed at the icy flames within the jade box, his slender fingers gently stroking the edge of the box. With a thought, a fiery red, mysterious rune suddenly lit up at his fingertips.

Flame Ancestral Symbol!

As the fiery red runes flowed, a gentle power, like a trickle, poured into the Ice Soul Flame. Surprisingly, the icy blue flame trembled slightly as if it were alive, and under the guidance of the Flame Ancestral Symbol, it naturally split into three streams of light, like flowing water.

"Congeal!"

With a soft shout, the three streaks of light gradually stabilized and took shape in the air:

On the far left is a fist-sized, ghostly blue flame, radiating a chilling aura at the Douhuang level, which is just right for Qinglin's current cultivation level;
The larger flame in the middle retained the power of a beginner-level Dou Zong, its icy core shimmering with magnificent light;
The last remaining primordial flame was still at the level of a high-level Dou Zong, and Lu Yu put it back into the jade box.

……

Soon after,

Deep within Demon Flame Valley, in a secluded courtyard.

In the courtyard, more than a dozen snake-like magical beasts of the fifth rank or above were coiled up in various places. Some were wrapped around the branches of ancient trees, while others were curled up in nests made of grass, their postures lazy and docile.

In the center, a pool of cold jade shimmered with a faint icy mist. The water was crystal clear, and several crystalline ice-attribute demonic snakes swam leisurely within it, their scales reflecting a delicate, cold light in the sunlight.

Qinglin sat barefoot on the edge of the pool, her slender legs immersed in the cool water. Her toes gently stirred the surface, creating ripples. She closed her eyes slightly, sensing the joy of the magical beasts in the pool, and her mood brightened accordingly.

Just then, a soft footstep sound came from outside the courtyard. Qinglin's eyelashes fluttered, and she opened her eyes to see Lu Yu walking slowly towards her, his white robes fluttering in the breeze, his expression gentle.

"Young master." She quickly stood up, water droplets sliding down her fair ankles, leaving a few glistening drops on the jade floor.

Lu Yu's lips curled slightly, and he gently opened his slender palm, revealing a crystal-clear ice jade box that appeared out of thin air in his hand. Fine frost patterns clung to the surface of the jade box, emanating wisps of cold air.

"Qinglin, let me show you something good." He said gently, handing over the jade box.

Qinglin curiously took the jade box, but the moment her fingertips touched the surface, she trembled violently as a chilling cold instantly spread through her fingers. She quickly called for Xiaocai, and the seven-colored snake understood, wrapping its tail around the lid and gently lifting it open.

A single, icy blue flame floated silently within the jade box, its core possessing a crystal-clear quality, as if carved from the finest blue crystal. As the flame burned silently, tiny ice crystals condensed in the surrounding air, refracting a dreamlike halo in the sunlight.

"This is... a strange fire?"

"Indeed, this fire is called the Ice Soul Frost Flame. It is a rare and cold-attribute strange fire that is extremely compatible with your physique. Haven't you always envied Xian'er for having a strange fire that is compatible with her own attributes?"

"This fire is for you. It can be used to create a unique fire vein that suits you. Do you like it?"

Qinglin held the icy jade box in both hands, the icy blue flames reflecting on her delicate face, her eyes filled with surprise and emotion. She bit her lip, seemingly hesitant, but finally raised her head and said earnestly, "Young Master, this strange fire is too precious, Qinglin cannot accept it for nothing."

As she spoke, she took out an ancient bronze token from her waist, which was engraved with intricate serpentine patterns and faintly emitted fluctuations of spiritual power.

"This is...?" Lu Yu raised an eyebrow slightly.

Qinglin handed over the bronze token and said softly, "These past few days, I have been cultivating a batch of fourth-tier 'Mysterious Ice Scale Serpents' using the secret method of the 'Insect Control Manual' that you gave me. They are quite intelligent and good at hiding, so they can be used to guard the storeroom and herb garden for the Spirit Treasure Pavilion."

She lightly tapped the token with her fingertip, and immediately, rustling sounds came from all around the courtyard. Dozens of silver-white serpentine magical beasts emerged from the shadows, each gleaming with a cold, icy light, their serpentine eyes sharp yet docile, coiling around Qinglin's feet.

“Although these little guys are only at the fourth level, if they form the ‘Five Serpent Poison Seal,’ even a dozen Dou Wang experts would find it difficult to break through their blockade in a short time.”

A hint of pride flashed in Qinglin's eyes as he raised the bronze token and said, "This beast-taming token can control them; young master only needs to inject a wisp of soul power."

Lu Yu took the token and, after a brief sensing, indeed detected the connection between it and the group of snakes. He couldn't help but chuckle, "It seems you've thoroughly studied this 'Insect Control Manual'."

Qinglin smiled and said, "I will naturally practice the cultivation method given to me by the young master."

Lu Yu put away the Beast Taming Token, nodded in satisfaction, and said, "In that case, you can accept this strange fire with peace of mind. After you successfully refine it, I plan to build a special beast taming park for you, so that you can give full play to your strengths and cultivate more magical beasts for the Spirit Treasure Pavilion."

Upon hearing this, Qinglin's eyes lit up, and she nodded solemnly, replying, "Qinglin will certainly not fail your trust, young master!"

……

After a while,

After passing through several courtyards, Lu Yu arrived at Cai Lin's cultivation area. There, he saw Queen Medusa sitting cross-legged on a purple crystal platform, her body surrounded by faint seven-colored energy. Sensing someone approaching, she slowly opened her eerie purple eyes.

"What is it?" Cai Lin's voice remained cold, carrying its usual aloofness.

With a calm expression, Lu Yu took out a more exquisite cold jade box from his storage ring and said, "This is a strange fire with the attribute of Yin coldness, which has reached the level of Dou Zong."

Cai Lin's eyes flickered slightly, but she did not immediately accept it: "I remember, our agreement did not include accepting gifts." "This is indeed part of the deal."

Lu Yu calmly explained, "I need you to break through as soon as possible so that you can better fulfill your guard duties. This strange fire is extremely compatible with your snake-human physique and can help you improve your combat power."

As he spoke, he took out another jade slip: "Also, take a look at this secret technique..."

Cai Lin frowned slightly, took the jade slip and examined it briefly. A hint of surprise flashed in her eyes: "The method of creating a strange fire vein? There is such a mysterious secret method in the world?"

Her slender fingers tapped lightly on the amethyst surface, as if weighing the pros and cons. After a moment, she sighed softly and pushed the jade box and jade slip back: "I'm afraid I can't repay this favor..."

"With the help of the Nine Heavens Sword Primordial Spirit Chapter, I have broken through to the second-star Dou Zong realm during this period. The profoundness of that technique is truly unimaginable..."

"I am sorry that I am not worthy to enjoy this strange fire."

Lu Yu smiled slightly, not surprised, and said casually, "In that case, why don't we renegotiate our cooperation method?"

"With Miss Cailin's talent, it would be a waste of her abilities to merely serve as a guard."

He said sincerely, "I would like to invite you to serve as the Hall Master of the War Hall. During my seclusion, you can manage the affairs of the Spirit Treasure Pavilion together with Xian'er."

"Given Cai Lin's experience as the former queen of the Snake-People, she should be able to handle these matters with ease."

Cai Lin's expression shifted, a hint of surprise flashing in her purple eyes. She asked, "You want me to completely join the Spirit Treasure Pavilion?"

Lu Yu simply smiled and remained silent, neither confirming nor denying, quietly awaiting her reply.

Cai Lin remained silent for a long time, her purple eyes filled with shifting emotions. Her slender fingers unconsciously caressed the snake-shaped jade pendant at her waist, countless thoughts flashing through her mind.

Finally, she sighed softly and parted her red lips slightly: "Okay, I promise you."

Lu Yu remained calm, as if he had anticipated her decision. Then, he raised his hand and lightly tapped, a wisp of golden flame slowly drifting out from between Cai Lin's brows, tracing a graceful arc in the air before vanishing without a trace.

Cai Lin's pupils contracted slightly, and she subconsciously touched her brow, a hint of surprise flashing in her eyes: "You... just took it back like that?"

She had thought that the fire seed of the pagoda was a means for Lu Yu to control her, but she did not expect that he would take it back so decisively.

Lu Yu's lips curled slightly, a hint of amusement in his eyes, and he teased, "What? Miss Cai Lin seems quite surprised?"

"I……"

Cai Lin was speechless for a moment, her purple eyes churning with complex emotions. She had thought she was just a pawn being used, but she hadn't expected the other party to be so frank.

Lu Yu stood with his hands behind his back and said in a relaxed tone, "I, Lu Yu, have always acted with integrity and uprightness. Since Miss Cai Lin has sincerely joined the Lingbao Pavilion, there is naturally no need to keep this Floating Pagoda Fire Seed."

As he spoke, he flipped his hand and took out an exquisite jade box, then said, "This is an Earth Spirit Pill, which can help refine strange fire. Consider it a gift for the War Hall Master."

Cai Lin took the jade box, her fingertips trembling slightly. She looked up at Lu Yu, scrutinizing the young man for the first time.

"Pavilion Master Lu..." she called softly, but didn't know what to say.

Lu Yu shook his head, a gentle smile on his lips, and said, "Such a formal way of addressing me always feels a bit strange. Just call me Lu Yu."

The setting sun cast a soft golden glow on his handsome features. Cai Lin paused slightly upon hearing this, a complex emotion flashing in her purple eyes.

“Okay… Lu Yu.” She called softly, her red lips slightly pursed, her tone less distant than before.

Lu Yu's smile deepened as he said, "That's more like it. From now on, we're all on the same side, so there's no need to be so formal."

Cai Lin looked down at the jade box in her hand, and suddenly felt something in her heart soften. She raised her head, her purple eyes showing more sincerity: "Since that's the case, you shouldn't keep calling me 'Miss Cai Lin'."

"What should we call her then?" Lu Yu blinked, deliberately drawing out the words, "Da Cai? A Cai? Or..."

Cai Lin glanced at him indifferently, said nothing, and turned to walk into the house. As her red dress fluttered, she left only the words, "I'm going to refine the strange fire."

Lu Yu watched her departing figure and shrugged helplessly. He glanced at the sky and muttered to himself, "I should go refine that Ice Soul Frost Flame too..."

Before he finished speaking, faint ripples appeared in the surrounding space, and his figure had already disappeared from the spot.

……

Soon after,

Inside a quiet room.

Lu Yu sat cross-legged. In the jade box in front of him, an ice-blue flame burned silently, radiating a bone-chilling cold.

"call out!"

Lu Yu formed hand seals and inhaled deeply. The icy flames instantly transformed into streams of light and entered his body.

"boom!"

The moment the flames entered his body, Lu Yu trembled violently. A terrifying aura of ice erupted, instantly filling the entire quiet room with frost. His skin rapidly turned ice blue, and layers of ice crystals spread out, freezing him into an ice sculpture in the blink of an eye.

However, Lu Yu, frozen in ice, remained composed. The Great Floating Pagoda Technique circulated wildly within his body, golden Floating Pagoda Flame surging through his meridians, fiercely clashing with the invading Ice Soul Frost Flame.

"Practice for me!"

With a low shout, Lu Yu's battle qi suddenly erupted. Golden flames and blue ice intertwined and swirled in his meridians, each collision making his aura even stronger.

Three days and three nights passed, and the thick frost in the quiet room began to melt quietly, and spiderweb-like cracks gradually appeared on the ice crystals covering Lu Yu's body.

"Click..."

With a crisp cracking sound, the icy shell shattered. Lu Yu suddenly opened his eyes, his pupils swirling with golden and blue light, and his aura instantly soared to a whole new level.

"Seven Star Douzong!"

At the very moment of the breakthrough, the dormant Floating Pagoda within his body suddenly trembled violently. The ancient runes on the pagoda, long sealed away, lit up one by one, radiating dazzling light, and the entire pagoda was bathed in holy radiance.

Top-grade magical artifact!

(End of this chapter)