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

Chapter 19 The Method of Creating Different Flame Spirit Veins!
[In the third year, you used the low-grade divine-level spiritual technique, Heavenly Dragon Flame Finger, to defeat the Divine Soul Realm cultivator, earning praise from your teachers and receiving a low-grade divine-level movement technique—Heavenly Fire Soaring Dragon Step.]

[In the second month, you broke through to the Divine Soul Realm and officially graduated from the academy. According to the rules of the Endless Fire Domain, you can choose one of the three exotic fire seeds: the Flame of Life, the Azure Lotus Earth Core Flame, and the Fallen Heart Flame. You are overjoyed...]

[Then, the school teacher explained to you that this was the intention of the Lord of the Endless Fire Domain, Emperor Yan. After entering the Great Thousand World, he was troubled by the fact that the people of his plane did not have spiritual veins and their cultivation was slow. So he pondered deeply, consulted the classics of various ancient clans, and changed the precedent that the Divine Soul Realm could only absorb the souls of beasts. Instead, he absorbed the strange fire between heaven and earth, and used the strange fire to transform the human body, thus opening up the method of creating artificial strange fire spiritual veins.]

As long as the absorbed strange fire is powerful enough, it can create geniuses comparable to those with human, earth, heaven, or even god-level spiritual veins. This is the fundamental reason for the Endless Fire Domain's strength.

Next, the teacher introduced you to the uses of these three different flames: the Flame of Life helps medicinal herbs grow, and the Fallen Heart Flame accelerates cultivation...

As for the Azure Lotus Core Flame, it's because the Endless Fire Domain is located in the Burning Heaven Mountains, which are rich in volcanic lava. This makes it easy to find compatible spiritual objects that can promote the Azure Lotus Core Flame's evolution, making it the most promising for growth.

After much deliberation, you finally chose the Flame of Life. Under the supervision of your teachers at the academy, you refined the Flame of Life and formed a unique fire vein.

[In the third month, because you chose the Flame of Life, you were assigned to the Alchemy Pavilion, starting as an alchemy apprentice.]

[In the fourth month, due to your accumulated experience in the real world, you progressed extremely quickly. The Endless Fire Domain is not lacking in geniuses, and you had no intention of hiding your strength. You quickly demonstrated your level as a first-class alchemist, received preferential treatment from the Alchemy Pavilion, and were summoned by Xuan Yi, one of the nine elders of the Alchemy Pavilion and a Great Perfection Earthly Sovereign.]

You can't help but recall this person's identity. Rumor has it that this person is the Grand Elder of the Endless Fire Domain, the teacher of the Flame Emperor, and the old lover of the Medicine Celestial Venerable...

[The woman in black randomly selected a few questions and was very satisfied with your performance. She decided to reward you with a secret technique. She then took out three scrolls of secret techniques for you to choose from.]

[Volume 1, "Fire Spirit Splitting Technique"—This technique allows one to split a different kind of fire in two, simultaneously controlling two different flames, and up to nine in total. It is an extremely sophisticated fire control technique.]

[Volume Two, "The Method of Burning Blood to Condense Elixir"—This method increases the success rate of elixir formation by sacrificing one's essence and blood, but requires a period of recuperation afterward. Excessive use can damage one's foundation.]

[Volume 3, "The Method of Clarity of Mind"—Enhances the perception of medicinal herbs and increases the success rate of medicine refining.]

[After carefully weighing the pros and cons, you ultimately chose the "Danxin Tongming Method." The man in black nodded slightly, quite satisfied with your choice.]

[Afterwards, you devoted yourself to cultivation in the Alchemy Pavilion. With the assistance of the "Danxin Tongming Method," your perception of medicinal herbs greatly improved, and you successfully refined a second-grade spiritual pill, becoming a second-level alchemist...]

[In the fourth year, the Endless Fire Domain held the Outer Domain Grand Competition. With your cultivation at the Fusion Heaven Realm, combined with the healing properties of the Flame of Life, and a series of techniques such as the Great Floating Pagoda Technique, you defeated several powerful opponents in succession, ultimately winning third place in the Fusion Heaven Group.]

In your fifth year, as the third-place finisher in the Fusion Heaven Group, you were rewarded with a year of cultivation in the Burning Heaven Tower within the Inner Domain. There, you first encountered the legendary "Flame Emperor," Xiao Yan. Although it was only a fleeting glimpse, his vast and unfathomable aura left an indelible mark on you.

[In the sixth year, you returned from the inner domain, your cultivation having broken through to the Heavenly Realm. You were summoned by Hai Bodong, the Grand Elder of the Outer Domain, the Lord of the Xuanbing Continent, the current wielder of the Bone Spirit Cold Flame, and one of the nine elders of the Alchemy Pavilion...]

[You have been granted the status of a core disciple of the outer realm by Hai Bodong and have become a level three alchemist in the Alchemy Pavilion, and you are only twelve years old...]

[In the seventh year, the extraterrestrial evil race suddenly attacked the outer perimeter of the Burning Heaven Mountains. Since you had not yet broken through to the Supreme Realm, you were ordered not to go out and could only concentrate on cultivation. Subsequently, your cultivation broke through the first of the three minor tribulations of the Supreme Realm—the physical body tribulation. You also became a disciple of Xuan Yi and, under his guidance, became a fourth-level alchemist.]

[In the eighth year, you unfortunately stumbled upon the rendezvous between Master Yao and Xuan Yi. You called out "Grandmaster," which pleased Master Yao greatly, and he rewarded you with a top-grade spiritual artifact—the "Nine Phoenixes Facing the Sun Cauldron."]

This cauldron is entirely crimson, with nine phoenixes rising from the ashes carved on its body. It can automatically adjust the heat, greatly increasing the success rate of alchemy.

[In the ninth year, under Xuan Yi's guidance, your alchemy skills improved by leaps and bounds, making you a level five alchemist. You also gained a large amount of resources through alchemy, breaking through the second difficulty of the Supreme Lesser Three Tribulations: the Spiritual Power Tribulation!] [In the tenth year, the extraterrestrial evil race launched a large-scale attack. The Endless Fire Domain entered a state of war preparedness. Although you had not yet reached the Supreme Realm, your status as a level five alchemist led to your assignment to the logistics unit, responsible for treating the wounded.]

After the war, as a reward, you were granted the opportunity to enter the Scripture Pavilion and choose a cultivation technique. Standing before the vast and boundless collection of scriptures, you suppressed your desire for other high-level techniques and ultimately chose "Detailed Explanation of the Serpent Sealing Spell."

According to Elder Shouge, this manual was personally improved by the Rainbow Scale Clan's mother. She modified the sealing techniques, originally only applicable to the Snake-People race, into a universal version that humans could also learn, naturally including methods to break them.

[Afterwards, you returned to your residence, took out the inheritance jade slip, poured all your life's learning into it, and began to continue your cultivation...]

[This simulation ends——]

You can choose one of the following three items.

【I. The Flame of Life (Divine Soul Realm Fire Seed)】

Second, the Nine Phoenixes Facing the Sun Cauldron (a top-grade spiritual artifact)

[3. Your inheritance jade slip]

"Tsk tsk tsk, I didn't expect Senior Yao to live such a comfortable life in the Endless Fire Domain. His later years are quite carefree..."

Lu Yu stroked his chin, a playful glint in his eyes. Suddenly, as if he had thought of something, a mischievous glint appeared in his eyes: "But if we're talking about the most powerful one, it has to be Xiao Yan. He's managed to create something like a different kind of fire vein, which has actually boosted the cultivation aptitude of the entire lower plane."

"No wonder the Endless Fire Domain was able to rise so rapidly in just a few hundred years. With spiritual veins and an abundance of pills, it's no wonder that geniuses emerge in large numbers and the land is blessed with outstanding people."

"Since that's the case, there's no need to hesitate any longer. Let's choose the inheritance jade slip. It must contain the method for creating a different kind of fire spirit vein and the method for breaking the serpent's sealing curse..."

After saying that, Lu Yu had a thought, and a crimson jade slip appeared in his hand, followed by a flood of information into his mind.

"Divine-grade low-level spiritual technique, Xuanhuang Breathing Technique; Divine-grade low-level body technique, Heavenly Fire Dragon Step; Method for shaping strange fire spiritual veins; Danxin Tongming Method; Detailed explanation of the Serpent Sealing Spell..."

"In addition, there is a fifth-level alchemist inheritance, which, according to the standards of the Dou Qi Continent, is roughly equivalent to an eighth-grade alchemist?"

Lu Yu stroked his chin, lost in thought.

The hierarchy in the Great Thousand Worlds differs from that in the Dou Qi Continent. Spirit array masters and alchemists below the Supreme level are divided into five levels, from Level 1 to Level 5, corresponding to the Spirit Wheel Realm, Divine Soul Realm, Heaven Fusion Realm, Heaven Transformation Realm, and Heaven Connecting Realm, respectively.

If converted to the realm system of the Dou Qi Continent, they would be equivalent to Great Dou Master to Dou Spirit, Dou King, Dou Emperor, Dou Sect Master, and Dou Venerable, respectively.

As for alchemists comparable to the Supreme Realm, they are revered as alchemy masters in the Great Thousand World, and are divided into three grades: Human, Earth, and Heaven, which correspond one-to-one with the three major realms of the nine-grade alchemists in the Dou Qi Continent.

(End of this chapter)