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

Chapter 197 Choice, Eighth Grade, Seven Colors!
"Eight Divine Veins..."

Looking at the options in the simulation, Lu Yu fell into deep thought, a rare occurrence for him.

Of the three options, animal milk is naturally the first to be eliminated.

As for the inheritance of the jade slip and the eight divine veins of Qingyanjing.

Naturally, the Eight Divine Veins of the Qingyan Realm are more valuable. Even an ordinary divine vein is enough to give a person the potential to reach the Heavenly Sovereign level. There are no more than a handful of people in the Great Thousand World who possess such a divine vein as the Eight Divine Veins.

As for the even more ethereal Nine Divine Veins, as far as he knew, in the distant future, only the chosen one, Mu Chen, would truly possess them.

Without a doubt, we must choose the Eight Gods Vein!
"But the problem is, can I still fuse with this Eight God Veins?"

A thoughtful look flashed in Lu Yu's eyes. According to the information revealed in the simulation, the number of spiritual veins a cultivator can bear is limited; before reaching the Supreme Realm, a cultivator can only accommodate a maximum of one spiritual vein.

He already possessed a unique fire spiritual vein within his body. Furthermore, the success rate of spiritual vein transplantation is highest when performed between members of the same race; if transplanted from outside the race, the success rate is negligible.

“Actually, it’s not entirely without a solution,” Lu Yu pondered. “Since I personally created this strange fire vein, I naturally have ways to strip it away, but… it will require paying a huge price.”

"Want to take this gamble?"

A ruthless glint flashed in his eyes. This strange fire spiritual vein was formed when he was at the Dou Wang realm. Now that he had advanced to the Dou Zun realm, the spiritual vein had long been deeply integrated with him. Forcibly taking it away would come at a price no easily paid.

"We must be fully prepared!"

Lu Yu quickly began to plan, "First, we need to prepare top-grade recovery pills, and more than one—one will be needed when the spiritual veins are stripped; if the fusion of the eight divine veins fails and we suffer a backlash, we'll need another one as a backup..."

"Even if we fail this time, at worst we'll just have to spend some time rebuilding a different kind of fire vein and more time recovering... But if we miss this opportunity of the Eight Divine Veins, we may never encounter it again in this lifetime!"

Even if the odds are low, it's worth the gamble!

With this thought in mind, Lu Yu's gaze suddenly became incredibly resolute. The risk was high, but the reward was even greater—it was worth the gamble!
—————————————————————

Soon after,

Lu Yu left the meditation room, summoned Little Fairy Doctor, handed her a list, and said, "Go and send a message to the Cao and Dan families at the Pill Tower, and make sure they find all these medicinal herbs for me within three days..."

"Blood Essence Demon Fruit, Ten-Thousand-Year Green Spirit Vine, Snow Bone Ginseng..."

Little Fairy Doctor took the list, read it aloud softly, and then a hint of surprise flashed in her beautiful eyes as she looked up at Lu Yu: "Aren't these the medicinal materials for refining the Bone-Regenerating and Blood-Melting Pill? This pill is said to have the miraculous effect of bringing the dead back to life and restoring flesh and bones. Who needs to rebuild their physical body?"

Lu Yu shook his head slightly, not answering directly, but instead instructed: "When sending the message, directly specify that the Cao family and the Dan family each prepare a set of medicinal materials for refining this pill and send them over as soon as possible."

"The cost will be deducted from the share of Spirit Dust produced this year."

His gaze was calm, and he had already begun to plan the refining process. Although this Bone-Growing and Blood-Melting Pill was only a peak seventh-grade pill, with his current late-stage Spirit Realm strength and alchemy skills, he was capable of refining it into an eighth-grade pill.

This was his preparation for dealing with the potential severe damage from the stripping of the spiritual veins, and for the possibility of failure in fusing the eight divine veins.

Upon hearing this, Little Fairy Doctor nodded silently, said no more, and then turned and left to personally arrange the communication.

A few days later,

"These are medicinal herbs that the Cao and Dan families urgently sent. They are all needed to refine the Bone-Growing and Blood-Melting Pill, and they are all of the highest quality."

The Little Fairy Doctor held two jade boxes, each exuding a rich medicinal fragrance, and handed them to Lu Yu, speaking gently.

Lu Yu took the jade box, opened it to examine it, and saw that the Blood Essence Demon Fruit inside was full of color, the Ten Thousand Year Green Spirit Vine was filled with spiritual energy, and the Snow Bone Ginseng was as white as jade. They were indeed rare and excellent products. He nodded in satisfaction: "Very good."

Without the slightest delay, Lu Yu moved and appeared on the vast stone platform atop Tianmu Mountain.

With a flick of his sleeve, an ancient medicine cauldron carved with a blue phoenix pattern crashed to the ground. Then, with a flick of his finger, a wisp of gilded pagoda fire shot precisely into the cauldron.

As the flames rose, the terrifyingly high temperature caused the air around the cauldron to distort violently, and waves of heat rolled in.

He held his breath and focused his mind, his spiritual power slowly spreading out, meticulously sensing every temperature change in the medicine cauldron. Then, with practiced ease, he placed one precious medicinal herb after another into the cauldron, his movements fluid and precise.

The powerful late-stage Spirit Realm soul force perfectly controlled every rise and fall of the flames, carefully extracting every drop of medicinal essence and removing the finest impurities.

Ten days later, atop Tianmu Mountain,

"boom!"

Suddenly, a deep, muffled sound exploded from the mountaintop. The members of Lingbao Pavilion hurriedly looked up and felt a powerful energy surge rising from the summit!

Above the sky, dark clouds gathered instantly, lightning flashed, and countless silver snakes danced wildly.

"It's the Pavilion Master!" Someone with sharp eyes immediately noticed that Lu Yu, who had been sitting cross-legged on the mountaintop under the sky full of thunderclouds, suddenly stood up and looked up at the sky.

"Three-colored Dan Lei?"

Lu Yu's gaze sharpened as he stared at the tricolored lightning surging within the thick, dark clouds, and he coldly snorted, "Not enough!"

A glint flashed in his eyes, and three crystalline spirit-nurturing powders suddenly appeared in his hand. With a flick of his finger, the powders transformed into streams of light and disappeared into the dark red pill in the cauldron!

The pill trembled violently, its surface shone brightly, and the thunderclouds in the sky surged and changed, suddenly increasing from three colors to five colors!
However, Lu Yu did not stop. His hand seals changed again, and a vast amount of soul power surged out as he shouted, "Spirit Ascension!"

With his shout, dazzling golden pagoda flames roared forth. Then, he flicked his fingers repeatedly, and icy blue Ice Soul Flames and blazing Earth Core Flames appeared one after the other!

The three-colored flames hovered in the air, radiating a terrifying energy that sent chills down one's spine. With a thought, Lu Yu caused the three strange flames to collide violently!
A destructive and violent aura immediately spread out, but before it could spread, an immense and unparalleled soul pressure surged out from between Lu Yu's eyebrows, transforming into an invisible net that completely enveloped the three-colored flames and began to spin rapidly!
Under the extreme compression and harmonization of soul power, the raging three-colored flames quickly subsided. A few minutes later, a new flame, about the size of a fist and displaying a magnificent golden-blue color, quietly emerged.

With a flick of his sleeve, Lu Yu unleashed a golden-blue flame containing terrifying energy, which instantly enveloped the playful, pulsating dark red pill.

"Pfft!"

The pill, encased in flames, suddenly trembled violently, its surface becoming uneven. Thick spiritual mist emanated from within, but was firmly sealed off by the flames.

Lu Yu's expression turned solemn. He bit his tongue sharply, spitting out a mouthful of blood mist formed from his essence blood, which splashed into the flames. He then shouted, "Blood Sacrifice, Spirit Return!"

As the blood mist merged, Lu Yu's face turned pale. The spiritual energy in the surrounding world seemed to be summoned, transforming into countless visible streams of spiritual energy. Under his incredibly precise soul control, these streams surged forth, seeping into the pill through the tiny pores on its surface.

When the last wisp of spiritual energy merged into the pill, the uneven surface of the pill quickly became smooth and round, dazzling and brilliant!
Just as the pill was fully formed, the five-colored pill thunder clouds in the sky surged wildly again, and thunder shook the heavens and the earth!

This scene, like a bomb, exploded throughout Tianmu Mountain, leaving all witnesses in utter shock.

Seven-colored Dan Lei! A high-grade eighth-rank pill!
"In my lifetime, in my lifetime..."

An elderly alchemist with white hair and beard gazed up at the gradually dissipating seven-colored thunderclouds in the sky, trembling with excitement, tears streaming down his face. "I never imagined that in my twilight years, I would witness the birth of a high-grade eighth-rank elixir..."

"Master's skill is truly awe-inspiring! This alchemy technique is beyond the comprehension of even the gods and demons!"

Another middle-aged alchemist exclaimed in sincere admiration, his eyes filled with fervor and awe. All the alchemists of the Lingbao Pavilion atop Tianmu Mountain were immersed in immense shock and excitement, discussing amongst themselves, unable to contain their emotions.

Just then, the sixth-grade alchemist in the crowd, who had been personally instructed and bestowed with the Spirit-Nourishing Powder by Lu Yu, suddenly unleashed a strong soul fluctuation!

He stared blankly at the lingering afterglow of the pill lightning that had not yet completely dissipated, and recalled the incredibly profound soul manipulation technique that Lu Yu had used when refining pills. Suddenly, a gleam of enlightenment burst forth in his eyes!
"I...I understand!" he shouted excitedly, and immediately sat down cross-legged. His soul power surged violently and rose steadily, breaking through the bottleneck that had troubled him for many years and stepping into the peak of the mortal realm!
He suppressed the urge to immediately go into seclusion, bowed deeply in the direction of Lu Yu, and said in a trembling but firm voice, "Thank you for your guidance, Pavilion Master! I am deeply moved and need to go into seclusion immediately to break through to the seventh-grade alchemist realm!"

High in the sky, Lu Yu smiled faintly upon hearing this and casually caught the fierce seven-colored lightning bolt.

His body was now covered in a flowing crimson armor, and he soared into the sky amidst the lightning!

—————————————————————

Soon after, the thunder dissipated.

Lu Yu did not stop. He opened the furnace again and successfully refined the second Bone-Growing and Blood-Melting Pill with his superb skills.

Holding two grade eight, seven-colored pills in his hand, he summoned Little Fairy Doctor and Medusa to his side and carefully instructed them: "I have important matters to attend to and need to go into seclusion for a period of time. All related affairs in the pavilion will be handled by the two of you for the time being. If there are any difficult decisions, you can wait until I come out of seclusion."

Upon hearing this, Medusa raised her delicate chin slightly, her red lips curving into a lazy yet arrogant smile, and added, "Go ahead without worry. By the way, that guy who had to be given the Spirit-Nourishing Powder by you personally before has recently successfully refined a seventh-grade pill and officially entered the seventh-grade realm. My Spirit Treasure Pavilion has finally cultivated its first high-level alchemist."

Upon hearing this, Lu Yu smiled with satisfaction and nodded, saying, "That's for the best. This is a good start, and in the future, my Lingbao Pavilion will have a continuous stream of high-level alchemists emerging."

Having finished giving his instructions, he didn't linger any longer and disappeared in the direction of the quiet room in a flash.

(End of this chapter)