My classmates chose martial arts and fantasy, but I chose the prehistoric world.

The Fiery Rift Valley lives up to its name.

Standing at the edge of the rift valley, looking down, four words involuntarily surfaced in Meng Chuan's mind:

The Furnace of Heaven and Earth!

The earth here was brutally torn open, creating a hideous rift that stretched for thousands of miles and was of unknown depth.

The valley walls were blood-red, and the rock strata were twisted, as if they had been repeatedly kneaded by an invisible force.

There was no soil at the bottom of the valley, only the constantly churning, viscous, dark red magma, which would occasionally swell up into huge bubbles and burst open, spewing out intense rain of fire.

The air was violently distorted by the high temperature, and everything in sight was blurry and swaying.

Even more striking is the layer of grayish-red mist that permeates the entire rift valley.

This is not water vapor, but rather a dense, tangible aura of earth fire.

It was scorching, violent, and murky. Just trying to breathe it out made my throat burn, and my inner magical power stirred restlessly.

This is a place where earth fire and malevolent energy meet, a perilous and desolate region where life is extinguished.

But for Meng Chuan—

"This is the place to break through to a higher realm!"

He whispered something and jumped.

His body plummeted a hundred feet, a scorching wave of heat rushed towards him, and the fiery aura of the earth surged and coiled around him like a swarm of sharks that had smelled blood.

Meng Chuan neither dodged nor evaded, his body shimmering with a pale golden aura. He was operating the Nine Revolutions Profound Technique at full power, like a rapidly spinning millstone, frantically absorbing and refining the surging earth fire evil energy.

The extremely yang and powerful profound magic power resonated with the fiery energy here, making it exceptionally easy to absorb.

The scorching and violent fire energy surged into the meridians, bringing a needle-like stinging pain, but it was quickly soothed by the powerful blood and qi, and transformed into pure magic power that flowed into the dantian.

Meng Chuan's descent gradually slowed, and he eventually came to rest on a protruding red rock platform in the middle of the rift valley.

The platform was small, only a few feet in diameter, and its surface was scorching hot.

He sat down cross-legged and formed a mudra with his hands.

The Primordial Golden Cauldron emerged from between the eyebrows, hovering above the head, casting a clear light curtain to protect the spiritual platform and resist the erosion of the soul by the evil energy of the earth fire.

Immediately afterwards, he activated his profound internal energy to its fullest extent.

boom--!!

It was like throwing a spark into a gasoline drum; the fiery energy of the entire rift valley was instantly ignited.

Centered on Meng Chuan, a huge gray-red vortex quickly formed, frantically devouring the earth fire evil energy from all directions!

His body transformed into a furnace, repeatedly refining, purifying, and transforming the surging earth fire and evil energy.

His magical power surged, his blood and qi boiled, and his physical body was constantly damaged and rapidly regenerated under the scorching fire. The newly formed muscles and bones were even more resilient, with a faint reddish-gold luster.

In this process, time seems to lose its meaning.

Meng Chuan's heart was like an ancient well, without any ripples. He simply circulated his energy repeatedly, refining his magical power and tempering his body.

I don't know how much time passed, maybe ten days, maybe a month.

Within his dantian, the golden vortex had expanded to its limit, its light as intense as a small sun, and it faintly emitted the sounds of wind and thunder as it rotated.

The barrier at the peak of the Celestial Immortal realm is as thin as a cicada's wing.

Meng Chuan opened his eyes, his pupils swirling with gold and crimson, and inhaled deeply!

Boom—!!

The enormous gray-red vortex of malevolent energy above his head suddenly collapsed, transforming into a thick pillar of light, which he swallowed whole!

Within his dantian, a golden vortex exploded!

It is not destruction, but rebirth.

The exploding golden light transformed into countless more condensed and purer golden streams of energy, flowing, converging, and recombining within his body.

The Five Elements Return to Their Origin!

The five vital energies in the chest are the original energies of the five internal organs: heart, liver, spleen, lungs, and kidneys, corresponding to the five elements: fire, wood, earth, metal, and water.

Celestial immortals cultivate magical power and temper their physical bodies, while true immortals need to draw in the five elements of heaven and earth into their bodies, combining them with the origins of their five internal organs to refine the five elements within their chests.

The circulation of the five elements, endlessly generating new life, is the foundation of true immortality.

At this moment, Meng Chuan, who had absorbed a massive amount of earth fire evil energy, had his fire element energy within his body reach its peak.

The heart belongs to fire, and the heart fire is blazing, like the sun in the sky.

Then, fire generates earth, and the earth element is nourished from the spleen and stomach, providing a substantial and supportive energy.

Earth generates metal, and the metal element emanates from the lungs and internal organs, sharp and deadly.

Metal generates water, and the energy of water rises from the kidney source, being both extremely soft and extremely resilient.

Water nourishes wood, and the wood element energy flourishes from the liver, bringing forth vibrant life.

The five elements rotated and complemented each other, transforming into a swirling, five-colored vortex within his chest and abdomen, slowly rotating.

With each rotation, pure magical power flows back to nourish the body, replenishing the flesh and blood, and strengthening the body's vital energy.

Breakthrough!

True immortal!

Meng Chuan stood up, his bones cracking like popping beans, and golden and crimson patterns appeared beneath his skin. His aura was far stronger than when he was at the peak of the Heavenly Immortal realm!

He clenched his fist, feeling the surge of a completely different power within him.

Its magical power is more refined and concentrated, and its operation subtly resonates with the five elements of heaven and earth.

With an even greater increase in physical strength, ordinary magical weapons would find it difficult to harm him.

More importantly, the five elements within his chest circulate independently, allowing his magical power to recover at a speed far exceeding that of a celestial being!

"With my current cultivation level at the early stage of True Immortal, combined with the physical body of the Nine Revolutions Profound Technique, and the Primordial Golden Cauldron..."

A glint flashed in Meng Chuan's eyes, "Perhaps he could fight against an early-stage Profound Immortal!"

Although not the top-tier immortals in the prehistoric world at this time, Xuanxian was still a highly skilled individual.

He leaped into the air and looked down at the churning Fiery Rift Valley below.

This breakthrough was a natural outcome, entirely due to the unique environment of this place and the perfect match with the profound skills.

"It's time!"

Meng Chuan looked westward, his gaze distant.

Those pieces of information from my memory flashed through my mind.

Kunlun, the ancestor of all mountains, one of the primordial ancestral veins, and the location of the Three Pure Ones' Taoist temple.

That place was vast and boundless. At this time, in a remote corner of its borders, there was a hidden object called the "Qiankun Ruler".

This treasure is an innate spiritual treasure. Although it is not among the top-grade treasures, it has its own wondrous uses. It can measure heaven and earth and determine the earth, water, fire and wind!

It also contains a trace of spatial principles, which is of great use in combat, escape, and formation.

In the original primordial era, this treasure was obtained by Dao Ancestor Hongjun, but was taken away by Daoist Ran Deng when the treasure was distributed at the Treasure Distribution Rock.

But that happened after the three lectures at Zixiao Palace.

Since Zixiao Palace has not yet opened a lecture and Hongjun has not yet attained enlightenment, this treasure should still be hidden in a remote cliff in Kunlun, covered in dust and waiting for a destined person to possess it.

As for the other "Golden Dragon Scissors," it was obtained by the Tongtian Sect Leader from the depths of the Southern Wilderness Volcano, and later bestowed upon the Three Immortal Maidens of Sanxiao, where it shone brightly during the Investiture of the Gods.

In comparison, Kunlun is closer.

"The Qiankun Ruler is located inside a cliff called 'Measuring the Sky Cliff' on the western edge of Kunlun, concealed by an innate array."

"The journey to Kunlun is long and arduous, requiring us to cross the territories of several powerful clans, and is fraught with danger."

"However, it's worth the risk!"

Without further hesitation, Meng Chuan discerned the direction, his True Immortal power circulated within him, and the pure light of the Primordial Golden Cauldron enveloped his entire body, transforming into a golden-blue rainbow that soared into the sky.

The speed is several times faster than when it was the time of the Heavenly Immortal.

Heading west!

The mountains and rivers along the way are magnificent, the lakes are vast, and you can often see ferocious beasts fighting, demonic clouds crisscrossing, and cultivators flying by with their escape lights, their auras either righteous or evil.

Meng Chuan had no intention of causing trouble, so he tried to avoid places with abundant spiritual energy and obvious powerful forces, and instead traveled through desolate mountains and wilderness.

Occasionally, some foolish and ferocious birds or monsters would block his way, but he would easily dismiss them.

In the primordial era, years were immeasurable, and time gradually became blurred.

Meng Chuan didn't know how long he had been walking...

As the terrain rises higher, the spiritual energy becomes increasingly rich and pure, and the sky takes on a clear, azure hue.

On the distant horizon, the shadows of endless, majestic mountains faintly appear.

The mountain shadows stretched to the sky and the earth, shrouded in clouds and mist. The mountain body was a warm, jade-white color. Although it was far away, one could already feel the boundless spiritual energy and charm.

Kunlun, we've finally arrived!

Meng Chuan pressed down the escape light and landed on the summit of an unnamed mountain, gazing into the distance.

Kunlun is so vast that even with his current True Immortal eyesight, he cannot see its edge.

The mountains rise and fall like a giant dragon lying on the ground. Each peak is uniquely beautiful and extraordinary, with waterfalls and springs, cranes soaring and rare birds and animals appearing and disappearing in the forest.

This place is the true ancestral vein of the primordial world, a sacred land for cultivating immortality.

It was a completely different world from the ancient battlefield, the Flame Fiend Rift, and the Witch Clan Hunting Grounds he had visited before.

"Liangtian Cliff is located on the western edge of Kunlun, near the Weak Water. It is a remote place with relatively thin spiritual energy, and few cultivators set foot there."

Following the information in his memory, Meng Chuan set off again, flying westward along the mountainside.

They flew for another three days.

As the majestic and beautiful Kunlun main ridge recedes into the distance, the terrain gradually becomes desolate, with jagged rocks, sparse vegetation, and a much thinner spiritual energy.

Ahead appeared a wide, dim yellow river, its water viscous and flowing silently.

The river surface was devoid of waves, yet it exuded an aura of deathly stillness, as if all things were in decline.

Weak Water!

Even a goose feather cannot float, and even immortals and Buddhas cannot save someone!

Beside the Weak Water is a long, gray-white cliff, over a thousand feet high, steep and smooth, barren of any vegetation.

This is his destination – Liangtian Cliff!

Meng Chuan landed at the bottom of the cliff and looked up.

The cliffs rise high into the clouds, the rock mass is a single, seamless whole, without any cracks or entrances.

The divine sense swept over it, but was blocked and rebounded by an invisible force.

"As expected, there's an innate formation concealing it..."

He wasn't surprised.

If a primordial spiritual treasure like the Qiankun Ruler were readily available, it wouldn't be Meng Chuan's turn.