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

Chapter 262 Three-Star Dou Sheng, Black Demon Thunder Seed!
"A fifth-tier substitute Gu puppet is a bit lacking; its strength is still insufficient for a Dou Sheng, so it's useless to me right now. A celestial Gu puppet would be better..."

"The Floating Pagoda Immortal Gu can upgrade the Floating Pagoda's grade, and the Nine Revolutions Profound Spirit Liquid can enhance cultivation..."

How do we choose between these two?

Lu Yu pondered for a moment, then made his choice.

"The Immortal Gu of the Floating Pagoda, I suppose. Now that I'm a ninth-grade Xuan Dan alchemist, I can refine ninth-grade Xuan Dan myself. Ultimately, the Immortal Gu is more precious..."

With this thought in mind, a resolute glint flashed in Lu Yu's eyes, and he thought to himself, "I choose the Floating Pagoda Immortal Gu."

As soon as the words were spoken, ripples suddenly appeared in the quiet room. A brilliant light shone in the void, and a translucent Gu worm slowly condensed into shape. This Gu worm was only an inch long, its body as clear as jade, with seven-colored light flowing inside, and a miniature pagoda phantom could be vaguely seen floating within it.

Lu Yu reached out and took the Gu worm, feeling its warm, smooth texture on his fingertips. A look of curiosity flashed in his eyes: "How do you use this thing?"

After a moment's thought, he activated the Great Floating Pagoda Technique, injecting a wisp of pure Floating Pagoda Battle Qi into the Gu worm. The Gu worm immediately glowed with a shimmering light, and countless profound runes appeared on its surface. Then, it transformed into a stream of seven-colored light, entered his dantian, and directly merged into the floating pagoda within it.

In an instant, Lu Yu felt a surging storm in his dantian. The seven-colored light transformed from the Floating Pagoda Immortal Gu wrapped around the surface of the Floating Pagoda like a living thing, turning into countless fine light threads that seeped into the pagoda's body.

Wherever these rays of light passed, the tower emitted a series of humming sounds, and the originally simple tower body became crystal clear at a speed visible to the naked eye, with more complex and mysterious patterns appearing on its surface.

A powerful force flowed continuously within the tower, causing it to tremble and its aura to surge. When the last ray of light fully merged into it, the entire pagoda suddenly burst forth with dazzling divine light, its entire body radiating a warm, jade-like luster, clearly having been upgraded from a low-grade divine artifact to a mid-grade divine artifact!

"What amazing things! This vast world, with its billions of planes, is truly full of wonders..."

A look of amazement flashed in Lu Yu's eyes. Then, with a thought, the Floating Pagoda appeared from his dantian and slowly rotated in his palm.

At this moment, the tower is not only more solid, but also has countless fine golden patterns on its surface, exuding a terrifying pressure.

"With my current strength, and with the help of this mid-grade divine artifact, the Floating Pagoda, I can even put up a fight against a five-star Dou Sheng."

As Lu Yu sensed the immense power contained within the tower, a faint smile appeared on his lips. Then, as if remembering something, a glint flashed in his eyes, and he suddenly muttered to himself, "I almost forgot about these two things."

With a slight thought, the Floating Pagoda slowly rotated in his palm, and a black flame could be vaguely seen surging left and right within it at the bottom of the pagoda. It was the Void Devouring Flame Sub-Flame that had been sealed away back then.

At the same time, two severed corpses emerged from the tower. Although they had been cut in half, the terrifying pressure left by the five-star Dou Sheng was still chilling – it was the body of Hun Miesheng that had been cut open by his own sword!
"If I can refine the Void Devouring Flame, it will be enough to advance my cultivation level another step. As for the physical body of this Five-Star Dou Sheng..."

Lu Yu's gaze swept over the two neatly severed corpses, a glint of light flashing in his eyes. "Although it was cut in half, it is still well preserved, making it an excellent material for Mo You to reconstruct his body."

He reached out and gently touched the severed body. A warm, emerald-green flame rose from his palm, the flames like silk threads, wrapping around the broken ends of the two bodies, transforming into countless fine green threads.

The smooth, mirror-like incision, stitched together by the threads sculpted by the Flame of Life, began to slowly wriggle, and the flesh and blood reconnected and healed at a speed visible to the naked eye.

Even more miraculously, the boundless vitality contained within the Flame of Life continuously infused the corpse, causing the originally pale and stiff skin to regain its warm luster.

"With the body of a five-star Dou Sheng as the new body, once Senior Mo You's soul takes over, it should be able to recover to its peak condition..."

With these thoughts in mind, Lu Yu raised his hand and put away the repaired five-star Dou Sheng body, turning his gaze to the Void Devouring Flame Sub-Fire that was constantly crashing into the Floating Pagoda.

"Next, it's your turn to be dealt with."

With a slight thought, he caused the Pagoda to slowly open a crack. The black flame immediately became agitated, transforming into a hideous demonic face that tried to break free, but was firmly imprisoned by the Pagoda.

Lu Yu stared at the ball of Void Devouring Flame, a hint of caution flashing in his eyes. Although he hadn't detected anything obviously abnormal, the Void Devouring Flame was a rare and cunning creature in the Dou Qi Continent, and it was hard to guarantee that it wouldn't harbor any hidden tricks.

He knew that while the Void Devouring Flame was continuing the bloodline of the Soul Clan, it had also left the Soul Clan with many backup plans. How could the sub-flames left by such an existence be easily refined?

After a moment's thought, Lu Yu called out softly, "Xiao You."

A dark, fiery python emerged in response, coiling and slithering around him. Xiao You's vertical pupils were fixed on the black flame, its forked tongue flicking out, revealing a look of longing.

"This fire is now yours to consume," Lu Yu said in a deep voice. "If anything goes wrong, stop immediately."

As soon as he finished speaking, the black fire python let out a joyful hiss, opened its mouth, and the dark flames turned into a vortex to devour the fire.

The Void Devouring Flame struggled violently, its black flames writhing wildly, but under the combined suppression of Xiao You and the Floating Pagoda, the struggles of the Void Devouring Flame's sub-flames gradually weakened. One by one, the pure black flames were absorbed and refined by Xiao You.

As the last wisp of black flame was completely consumed, Xiao You roared to the sky, her serpentine body radiating a deep, eerie light as she slowly fed back the refined, pure energy. This purified energy, like a gentle stream, flowed continuously into Lu Yu's body.

Nourished by this power, Lu Yu's aura began to steadily rise. The battle qi in his meridians became visibly solid and thick, and energy ripples faintly spread around his body.

Mid-stage Two-Star Dou Sheng!

Late-stage Two-Star Dou Sheng!

Peak Two-Star Dou Sheng!

When the energy reached its peak, the Floating Pagoda suddenly roared, and its body burst forth with dazzling light. The barrier of the three-star Dou Sheng shattered in response, and an even more powerful pressure swept out, causing the space inside the meditation room to tremble.

Lu Yu slowly opened his eyes, a sharp light gleaming within them. Feeling the surging power within his body, he murmured, "A three-star Dou Sheng, I've succeeded." "As expected of a Dou Sheng-level Void Devouring Flame, the energy it contains is truly terrifying..."

"Unfortunately, at this stage, the number of strange flames that I can absorb and devour is getting smaller and smaller..."

"I wonder when the Thunder Clan's Black Demon Thunder Seed will arrive..."

Before the words were finished, Qinglin's clear voice called out from outside the quiet room: "Young Master, an envoy from the Thunder Clan has come to visit, saying that he has come on the orders of the clan leader to deliver the Black Demon Thunder Seed."

Upon hearing this, Lu Yu couldn't help but chuckle. It was truly a case of speaking of the devil and he appears. He straightened his robes, and with a flick of his sleeve, he dispelled the barrier around the meditation room. There stood Qing Lin, her emerald eyes sparkling with joy.

"Please have the envoy wait in the main hall." Lu Yu nodded slightly, a hint of anticipation flashing in his eyes.

This Black Demon Lightning Seed has arrived at just the right time. If I refine it, it might help my Thunder Emperor Undying Body advance even further.

Soon after,

When Lu Yu entered the council hall, he saw a handsome young man in a silver robe standing with his hands behind his back, and Mang Tianchi standing next to him with a big smile on his face.

Upon seeing Lu Yu, Mang Tianchi was the first to laugh and said, "Young Lu, this is Lei Dong, the young patriarch of my Lei clan. He has specially brought you the Black Demon Thunder Seed."

Lei Dong bowed respectfully, his expression frank: "I have long admired Brother Lu's name. I am Lei Dong, and I have come here on my father's orders to deliver the Black Demon Thunder Seed."

His gaze lingered briefly on Lu Yu, his tone tinged with curiosity: "I also want to see just how impressive the Lingbao Pavilion Master is, who was able to kill Hun Miesheng in the battle at Lingbao Pavilion."

"Brother Lei, you flatter me."

Lu Yu smiled calmly, "It was just the killing of an old bastard who had been causing trouble for many years. It's not worth the young clan leader making a special trip. Please convey my thanks to Clan Leader Lei Ying."

As he spoke, he calmly accepted the jade box containing the Black Demon Lightning Seed. Black lightning flowed within the box, faintly emitting a low rumble of thunder, clearly containing extremely pure lightning power.

The three took their seats as host and guest. Lu Yu's gaze lingered on Lei Dong for a moment, and he instantly sensed that Lei Dong was a half-saint. A look of surprise flashed in his eyes.

For Lei Dong to reach such a level at his age, even with the help of Lei Clan resources, is truly a gift.

Lei Dong felt the gaze and smiled frankly, "It seems that I can't hide my cultivation level from Brother Lu."

"Brother Lei's cultivation level is quite impressive..."

Upon hearing this, Lei Dong shook his head and smiled, "Brother Lu, you flatter me. As the young patriarch of the Lei Clan, I have received preferential treatment from the clan's resources since childhood, and have also been carefully guided by the elders. In terms of talent, I am really not as amazing as Brother Lu, who has cultivated to the Dou Sheng realm on his own."

His tone was sincere, and his eyes were clear. This unpretentious demeanor made Lu Yu feel a bit of goodwill towards this young patriarch of the Lei Clan.

After a moment's thought, Lei Dong spoke again: "Brother Lu, to be honest, besides the matter of the Black Demon Thunder Seed, there is another matter I have come here for."

"Now that Brother Lu has reached the Dou Sheng realm, the agreed-upon transaction of the Spirit-Nourishing Powder is probably of little use to you."

"I wonder if it would be acceptable to abandon this plan and allow Elder Mang to return to the Thunder Clan with me?"

Lu Yu laughed heartily upon hearing this: "Of course. The agreement with the nobles was originally made to deal with the threat from the Soul Palace. Now that we no longer have that concern, why should we delay the Dean any longer?"

He turned to Mang Tianchi and solemnly cupped his hands in thanks: "Thank you for your help over the past few months, Dean."

Mang Tianchi laughed heartily: "It's alright. I am honored that Canaan Academy could produce such a talent as you. Those old guys from the Thunder Clan have been quite envious lately!"

"If you ever visit the Thunder Clan, I will certainly drink three cups with you!"

"must."

Lu Yu smiled and agreed, then took out a jade bottle from his storage ring. "There is still some Spirit-Nourishing Powder here, so I will give it to the Thunder Clan as a token of my gratitude."

Lei Dong accepted the jade bottle, a hint of surprise flashing in his eyes, but he did not refuse. He then solemnly accepted it, saying, "Brother Lu's kindness will be remembered by the Lei Clan."

The atmosphere inside the hall was harmonious, and the three chatted for a while longer.

Not long after, outside the main hall of Lingbao Pavilion.

Lei Dong bowed slightly and said sincerely, "If Brother Lu ever has the time to visit the Thunder Realm in the future, please let me do my best to be a good host."

Lu Yu smiled and nodded: "Definitely."

As Lu Yu watched Lei Dong and Mang Tianchi disappear into the horizon, he was about to return to his meditation room when he felt a spatial fluctuation beside him. Turning around, he saw a figure in a green robe who had quietly appeared beside him at some point.

It was Gu Yuan.

(End of this chapter)