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

Chapter 78 Ancient Thunder Palace, Heart Demon Thunder Emperor!
"The Heavenly Gang Sword Sect? That small force in White Dragon Hill with a Transcendent Realm expert in charge?"

Lu Yu glanced at the first option, raised an eyebrow, and immediately recalled information about this sword sect in his mind.

White Dragon Hill is a renowned treasure-hunting destination on the Northern Cang Continent, famous for its ancient battles against extraterrestrial evil races. Countless powerful figures perished here, leaving behind numerous spiritual treasures.

The most famous of them all is the White Dragon Spiritual Treasure left by the White Dragon Supreme from a lower plane.

Because of these spiritual treasures, three major Transformation Realm forces—the Heavenly Gang Sword Sect, the Earthly Path Sect, and White Dragon City—have long been entrenched near White Dragon Hill. These three forces usually occupy their own territory, but whenever a spiritual treasure opens, they all come out to compete for the opportunity.

"Speaking of which..."

Lu Yu stroked his chin thoughtfully and said, "That kid Mu Chen found the Holy Dragon Plane only because he was guided by the White Dragon Spirit Pearl left behind by the White Dragon Supreme."

“Choosing the Tiangang Sword Sect would give us a head start, but the opening time of the White Dragon Spirit Treasure is uncertain, and with those madmen from the Dragon Demon Palace watching us, it’s too dangerous and not a good choice.”

"As for the Martial Spirit Academy, there's not much to say. It ranks third among the five academies, only one step behind the Holy Spirit Academy and the Myriad Phoenix Spirit Academy. It's just average."

"But the last option..."

"The Thunder Demon Sect in the northern border of the Tianluo Continent..."

A thoughtful look flashed in Lu Yu's eyes, and information about the Tianluo Continent immediately came to mind—as one of the ten super continents of the Great Thousand World, even though it ranked last, its resources were far more abundant than those of other advanced continents.

This vast continent is home to numerous powerful forces, divided into five regions, each region further divided into four realms.

"Northern boundary..."

Lu Yu pondered to himself, "Although it is the most barren realm in the Tianluo Continent, it doesn't even have a high-level Earthly Sovereign..."

"But it's still better than the Martial Spirit Academy. I've never even heard of the Martial Spirit Continent where the Martial Spirit Academy is located. In terms of resource abundance, it's probably not even as good as the Northern Cang Continent..."

"After all, there is still White Dragon Hill on the Northern Cang Continent..."

"My next goal is to find the Azure Jade Lotus Root and the ingredients for the Soul-Brightening Pill, so naturally I'll head to the continent where resources are more abundant..."

"In that case..."

Thinking this, a resolute glint flashed in Lu Yu's eyes. With a thought, the pale blue light screen before him rippled.

[Selection successful! Identity loading...]

[Simulation begins——]

[In your first year, at the age of six, you were able to join a king-level power in the Hundred Battles Domain because both your parents were elders of the Thunder Demon Sect. You had no complaints about this...]

After all, in this Northern Realm, the hierarchy of power is clearly defined: only a Fifth-Rank Supreme can be called a King, only a Seventh-Rank Supreme can be named an Emperor, and there are only seven truly top-tier forces in the entire Northern Realm that are presided over by an Earthly Supreme.

[In the second year, you focused on cultivating the Great Emperor's Inner Scripture. With your extraordinary talent, you broke through to the Spirit Wheel Realm at the young age of seven, preparing for the upcoming Outer Sect Grand Competition.]

[In the third year, you successfully advanced to the Divine Soul Realm. In the outer sect competition, you wielded the Emperor Seal Technique in your left hand and the Heaven-Burning Palm in your right, leaving your fellow disciples bewildered and ultimately claiming the top spot in the outer sect despite your height of only 1.5 meters.]

Because you're so young, you can't even reach the waists of your fellow disciples on the arena, so they jokingly call you: "The Outer Sect's Little Tyrant, the Invincible Little Bean."

[In the second month, as the champion of the grand competition, you gain the opportunity to enter the library and select a divine technique. Intending to choose a fire-attribute technique, you discover that while the Thunder Demon Sect possesses several fire-attribute techniques, their quality is unsatisfactory.]

Ultimately, you chose the top-grade divine technique, "Mysterious Thunder Body Forging Technique"—it is said to be the prerequisite for the Thunder Demon Body, the Thunder Demon Sect's supreme divine art...

[In the third month, to cultivate the "Mysterious Thunder Body Forging Technique," you went to the sect's forbidden area, "Thunder Demon Abyss," for secluded cultivation. Legend has it that this abyss was left behind by a powerful thunder-attribute expert from ancient times, and it nurtures a unique type of thunder called the "Earth Thunder Demon."]

This kind of lightning is quite peculiar. Although it is lightning, it can communicate with the earth. Once activated, it can easily crack the earth and cause destruction like a major earthquake...

[In the fourth month, under the protection of the sect elders, you took the special body-refining medicine provided by the Thunder Demon Sect and began to temper your physical body with the help of the Earth Demon Lightning, cultivating the Profound Thunder Body Forging Technique...]

[In the seventh month, you completed the initial stage of the Profound Thunder Body Tempering Technique and emerged from seclusion in the Thunder Demon Abyss. As you emerged, you vaguely sensed something calling to you from the depths of the Thunder Demon Abyss, but you dismissed it as an illusion caused by the rumbling thunder and paid it no heed...]

[In the eighth month, you successfully advanced to the Inner Sect. While gathering information, you learned that the Lord of the Nine Nether Palace in the Great Luo Heaven Domain, which borders the Hundred Battles Domain, has not yet returned, which secretly relieved you.]

Based on your memories from your past life, you know that the Hundred Battles Domain will soon become a pawn for the Xuan Tian Palace to test the Great Luo Heaven Domain. Faced with the Xuan Tian Palace, which has a Supreme Earthly Being at its helm, the entire Hundred Battles Domain is powerless to resist…

You secretly resolved: you must break through to the Supreme Realm before anything changes and persuade the Thunder Demon Sect to join the Great Luo Heaven Domain—after all, following the Profound Heaven Palace is a recipe for disaster!

[In your fourth year, you participated in the Inner Sect Competition, but were stopped at the preliminary rounds due to your cultivation level of the Fusion Realm. Your father found you a Heavenly Spirit Lotus seed to comfort you…] [Heavenly Spirit Lotus Seed: Legend has it that it possesses the miraculous effect of stabilizing spiritual power and solidifying one's foundation.]

[In the fifth year, after consuming the lotus seed and undergoing a year of arduous cultivation, you finally broke through to the Transformation Realm. Determined to avenge your previous defeat, you resolutely decided to re-enter the Thunder Demon Abyss, vowing to reach the Heavenly Transcending Realm!]

[In the sixth year, deep within the Thunder Demon Abyss, amidst the continuous rumble of demonic thunder across the earth, you unexpectedly captured a mysterious rhythm, thus entering a rare state of enlightenment...]

[Time knows no bounds in spiritual practice; the years pass unchecked in the mountains.]

[In the seventh year, when you awoke from your enlightenment, the Profound Thunder Body Forging Technique had reached its peak. Based on the Heaven-Burning and Sea-Boiling Palm, and incorporating the power of the Earth Demon Thunder's vibrations, you refined it to a superior divine level. You created a palm technique to complement the Profound Thunder Body Forging Technique, which you named "Thunderous Heaven-Shaking Palm!"]

Just then, you felt the call from the depths of the Thunder Demon Abyss once more. You hesitated, unsure whether you should go...

After a moment's hesitation, you finally decided to go. After all, it was just wasting a life in the simulation, which was something you could afford to do.

[Before you set off, return to the sect and inquire with your parents about the whereabouts of the Azure Jade Lotus Root and the ingredients for the Bright Soul Pill. Your father regretfully states that he has never heard of the Azure Jade Lotus Root, but the three auxiliary ingredients for the Bright Soul Pill can be found in the sect's treasury, and he will retrieve them for you immediately.]

After careful consideration, you informed your parents of the unusual phenomena in the Thunder Demon Abyss. Shocked, they immediately took you to meet the sect leader, Qin Tiangang—your own uncle.

[In the second month, under the personal escort of the sect leader, you ventured deep into the Thunder Demon Abyss. Passing through layers of lightning storms, you finally arrived at a dark and sunless sea of ​​thunder.]

Here, you have encountered an invisible lightning python formed from the lightning of the Netherworld Demon!

【Netherworld Demonic Thunder: A special type of thunder born from the essence of earth demonic thunder. It is formless and intangible, and its eerie thunderous sound targets the soul. It is a rare type of soul-type thunder in the world.】

The sect leader, relying on his fully developed Thunder Demon Body, fought fiercely with him, ultimately resulting in a draw. Just as you were preparing to retreat, a sudden bolt of lightning swept you into the abyss...

[In the third month, when you awaken again, you find yourself in a magnificent palace of thunder. Countless thunder spirits roam the palace, and then an ancient voice resounds in your mind—]

[You then realize with shock that you have been chosen by the Thunder Emperor of the Heart Demon to enter the legendary Thunder Palace! Through the explanation of the mysterious voice, you learn that you were born with an unawakened Thunder Spirit Body...]

[It turns out that Thunder Demon Abyss is the place where the ancient Thunder Demon Emperor fell, and this Thunder Demon Palace is one of the Demon Emperor's most precious artifacts. To fulfill the Demon Emperor's last wish, it has remained dormant here for ten thousand years, waiting for a suitable successor...]

You felt a chill run down your spine, thinking this old man was talking nonsense. Didn't he know his own limitations?

But when you look around, the terrifying aura emanating from those guardian lightning spirits instantly silences you—each of them possesses at least the cultivation level of a Earthly Sovereign, hundreds or thousands of times stronger than your uncle…

[Forced by circumstances, you have no choice but to temporarily compromise and accept the inheritance test of the Heart Demon Thunder Emperor. This supreme expert of the ancient Thunder Palace once followed the Thunder Emperor, one of the Nine Ancient Emperors, and his cultivation has reached the Heavenly Supreme Realm. His inheritance test is naturally extraordinary.]

[After countless trials of life and death, you have finally passed the first test, "The Illusion of the Inner Demon." As a reward, you are granted the opportunity to cultivate in the Thunder God's Pool for one year. This pool was created by the Inner Demon Thunder Emperor, modeled after the Heavenly River of the ancient Heavenly Palace. It contains endless mysteries and is of great benefit to breaking through to the Supreme Realm.]

[In the eighth year, you emerged from the Thunder God Pool, not only successfully advancing to the Supreme level but also activating the dormant Thunder Spirit within you, officially becoming the inheritor of the Heart Demon Thunder Emperor.]

[In the ninth year, during your second trial, you fought a desperate battle against ten other Thunder Spirits of the same realm who were equally fearless, ultimately passing the test despite being severely wounded. Your reward was the opportunity to choose a cultivation technique from the Thunder Palace's library.]

[In the library, you unexpectedly discover a wondrous technique called "The Three Yang Thunder Technique." It turns out that the Demonic Thunder Emperor, in his youth lacking resources, under the guidance of an ancient Thunder Emperor, comprehended the principles of the Five Elements' mutual generation and restraint, creating a supreme secret technique capable of reversing the attributes of spiritual objects!]

This secret technique can transform Yang-type spiritual objects of the three attributes of wood, thunder, and fire into each other: wood to thunder, thunder to fire. Each spiritual object can only be transformed once, yet its original characteristics are perfectly preserved. It is called the "Triple Yang Intercalary Thunder" by the Thunder Emperor!

[It was precisely through this astonishing "Three Yang Thunder Technique" that the Heart Demon Thunder Emperor was able to gather three elemental spirits within him, ultimately breaking through to the peak of the Immortal Rank, and was only one step away from the legendary Saint Rank...]

[In the tenth year, you passed the third test and were bestowed with a precious Lesser Thunder God Pill. After consuming this pill, your cultivation level broke through two realms from the Second Grade Supreme to the Fourth Grade Supreme. The Heart Demon Thunder Palace temporarily sent you back to the outside world, instructing you to return to receive the subsequent inheritance after breaking through to the Earth Supreme...]

[Upon leaving the Thunder Palace, you unexpectedly discover that the invisible lightning python, transformed from the Netherworld Demonic Lightning of yesteryear, is on its last legs. Seizing the opportunity, you swiftly slap it to death and instantly refine it!]

After refining it, you thought it over carefully. Considering your future self in reality, you used the Three Yang Thunder Technique to reverse the Netherworld Demonic Lightning attribute, transforming it into Netherworld Demonic Fire, and also separated a seed of fire at the Divine Soul Realm level...

Then, the Profound Thunder Body Forging Technique, the Thunderous Heaven-Shaking Palm, and the Three Yang Thunder Technique were recorded into the inheritance jade slip...

[This simulation ends——]

You can choose one of the following three items.

【First, Heavenly Spirit Lotus Seeds】

Second, the Netherworld Demonic Flame (Divine Soul Realm Flame Seed)

[3. Your inheritance jade slip]

(End of this chapter)