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

Chapter 68 Four Months of Diligent Training, Breaking Through to the Battle King Realm!
After the victory,

Lu Yu and Little Fairy Doctor left the arena and quickly returned to their original courtyard.

As soon as the two stepped into the courtyard, they saw Han Xian leading several disciples of the Medicine Clan who had been waiting for some time. Upon seeing the two return, Han Xian immediately greeted them with a beaming smile.

"Congratulations, Brother Lu, on ranking second on the list of the strongest!"

Han Xian cupped his hands and said, "Our Medicine Gang is willing to appoint Brother Lu as our Vice Leader, and in the future..."

"no."

Lu Yu interrupted coldly, his gaze sharp as a blade, and said in a cold voice, "I only take a share of the profits from the medicine refining; the affairs of the Medicine Clan are none of my business. If you cause trouble in the future..."

A cluster of blue and red flames suddenly sprang from his fingertips, flickering faintly before Han Xian's eyes.

"Don't drag me into this."

Fine beads of sweat immediately appeared on Han Xian's forehead. He forced a smile and said, "Brother Lu is too kind... Then what about the next batch of pills..."

"I will be going into seclusion for four months."

Lu Yu flicked his sleeve and said in an unquestionable manner, "Stop refining pills during this period. You can arrange the rest of the pills yourselves."

Before he finished speaking, he had already taken Little Fairy Doctor's hand and walked towards the inner courtyard without looking back.

Han Xian and his group were left standing there, looking at each other in bewilderment.

……

After returning to the courtyard,

Lu Yu carefully gave Little Fairy Doctor a few instructions, and after packing plenty of dry food and water, he prepared to head to the Heavenly Flame Refining Tower for seclusion.

He has now reached the Seven-Star Dou Ling realm, and the Floating Pagoda within his body has already condensed to more than 60%. Based on his current cultivation progress, he should be able to condense 70% of the Floating Pagoda by the time he reaches the Nine-Star Dou Ling realm.

If one can successfully break through to the Dou Wang realm, it is expected to reach 80% solidification. Once one's cultivation reaches the mid-level Dou Wang realm, it may be possible to condense a complete Floating Pagoda.

At that time, not only will he be able to take the Floating Pagoda out of his body to fight enemies, but he will also obtain the Floating Pagoda Fire, whose power is no less than that of a different kind of fire, and his strength will surely undergo a complete transformation.

"Okay, I've written it all down."

Little Fairy Doctor gently nudged Lu Yu's shoulder, a tender smile appearing in her autumn-water-like eyes: "You can go into seclusion in peace. I'm not a child anymore."

As she spoke, she took out an exquisite jade box from her storage ring and said, "This is a Mind-Clearing Pill that I made with ten rare medicinal herbs. If you feel agitated during your seclusion, you can take one."

Lu Yu took the jade box, his fingertips inadvertently touching her soft hand, and the two smiled at each other.

In the morning light, Little Fairy Doctor's ears turned slightly red, but she pretended to be calm as she smoothed her hair: "Go quickly, when you come out of seclusion..."

She paused, her voice as soft as the wind, and said gently, "I'll cook for you myself to celebrate."

"Then I'm going to eat my fill and enjoy it to the fullest."

Lu Yu smiled and gently stroked her pert nose, causing Little Fairy Doctor to playfully flinch and dodge.

Only then did he turn and leave, satisfied, walking through the winding college paths.

Before long, the majestic Heavenly Flame Refining Tower stood before him. He easily ascended to the sixth floor and pushed open the heavy stone door of Cultivation Room Number One.

In an instant, a rich, pale red energy surged forth like a tide. Lu Yu took a deep breath, and the Floating Pagoda within his body immediately trembled joyfully, as if a long-awaited rain had come after a drought.

He inserted the Azure Fire Crystal Card into the groove, and with a soft "click," the energy mist in the cultivation room immediately became three times denser.

Lu Yu took a deep breath, sat cross-legged, formed a hand seal, and gradually focused his mind into his body.

The Great Floating Pagoda Technique quietly began to circulate, and strands of pure inner fire energy flowed into his limbs and bones with his breath, thus beginning his four-month closed-door cultivation.

...Four months later,

The sixth level of the Heavenly Flame Refining Tower.

Inside Training Room Number One.

Lu Yu sat cross-legged, and in front of him, three crimson flowers floated in mid-air, arranged in a triangular shape.

The flame patterns dancing on the petals shimmered with a mysterious light, drawing in all the Heart Flame energy within a radius of hundreds of feet, which condensed into three dazzling orbs of light at the flower's stamen.

This was the "Crimson Flame Flower" he had simulated exchanging for in the first three months. His luck had been mediocre for the past three months, so he chose the safer academy simulation route.

This flower not only strengthens the foundation but also assists Dou Ling experts in breaking through. Now that the three flowers are combined, it is even more beneficial for Dou Wang experts breaking through.

"call--"

Lu Yu slowly exhaled a breath of turbid air, his hands quickly forming a hand seal. In an instant, the overwhelming aura of a peak Nine-Star Dou Ling surged out like a flood bursting its banks, causing the churning energy mist in the entire cultivation room to freeze.

In fact, he had already reached the peak of the Nine-Star Dou Ling a month ago. Now, after another month of honing his cultivation, and with the help of three Crimson Flame Flowers, he has further improved his skills.

According to his estimate, the chance of breaking through this time has reached 99%, and if there are no unexpected events, he should be able to break through safely.

Immediately, Lu Yu took a deep breath, his hand seals shifting as he pushed the Great Floating Pagoda Technique to its limit. In an instant, pure fire-attribute energy within the cultivation room flowed into his meridians like rivers flowing into the sea, through his breathing.

Within his dantian, the Floating Pagoda trembled violently, and the ancient patterns on its surface gradually became clearer. Above the top of the pagoda, a blue-red crystal slowly rotated, emitting dazzling brilliance.

"Come!"

With a soft shout, the three crimson flame flowers suddenly shone brightly, and the three clusters of heart flame energy gathered at the flower stamens roared in like dragons, pouring directly into Lu Yu's body.

"Um……"

Lu Yu frowned slightly, his bones crackling softly, and his meridians burned as if being scalded by lava. Yet, he remained calm, methodically guiding the violent energy straight to his dantian.

The pagoda trembled violently under the impact of the energy torrent, and the dark, ancient runes on its surface became clearer at a visible speed. Above the pagoda, the azure-red crystal spun rapidly, and spiderweb-like cracks began to appear on its surface.

"Boom!"

With a resounding boom, the eighth floor of the Floating Pagoda suddenly burst into dazzling light, and a brand new, mysterious pattern was fully formed.

At the same time, the battle crystal within his dantian shattered with a roar, transforming into countless dazzling points of light. These points of light did not dissipate but instead formed an energy vortex under the pull of the Floating Pagoda.

A torrent of energy surged forth like a burst dam, washing over every inch of his bones and flesh. A dragon-like roar continuously emanated from Lu Yu's body; his meridians expanded under the baptism of energy, and his entire being was thoroughly tempered.

The realm of the Battle King has been achieved!
However, the breakthroughs did not stop there.

Lu Yu remained calm, but his aura continued to rise steadily!
Mid-stage One-Star Dou Wang...

Late stage of a one-star Dou Wang...

Peak one-star Dou Wang...

"boom!"

With another muffled thud, his cultivation broke through the shackles and steadily remained at the two-star Dou Wang realm!

Only then did the surging tide of energy within his body begin to subside. Thanks to his profound accumulation of experience, this breakthrough allowed him to advance two stars in a row!
After a moment of silence, Lu Yu slowly opened his eyes, a golden glint flashing in them in an instant, as if it could pierce through the void.

He looked down at his palm, feeling the battle qi filling his entire body, which was the best proof that he had stepped into the realm of Battle King.

"boom!"

Then, with a soft sound, blue and red flames erupted from his back, instantly condensing into a pair of dazzling energy wings. Each feather was formed from pure battle qi, with blazing flames dancing at its edges.

Battle Qi transforming into wings—this is the most distinctive mark of a Battle King powerhouse!
(End of this chapter)