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

Ten days later.

Meng Chuan's figure appeared in a remote star field.

He sped along until he finally stopped in the air above an abandoned planet.

This planet is not large, and its surface is covered with a layer of grayish-brown rock, riddled with craters left by meteorite impacts, clearly indicating that it has been abandoned for countless millennia.

There is no sign of life on the planet, not even plants.

The entire planet was lifeless.

However, when Meng Chuan's divine sense swept across the area, he discovered a faint spatial fluctuation deep underground on this planet.

The fluctuation was extremely subtle; it would have been almost impossible to detect unless he had deliberately investigated it.

With a swift movement, he pierced through the ground and flew deep underground.

After descending through layers of rock for thousands of miles, a breathtaking view suddenly opened up before him—

A huge underground cavern appeared before him.

This void, spanning dozens of miles in circumference, had its dome inlaid with some unknown luminescent minerals that emitted a dim yellow light, illuminating the entire space.

In the very center of the void stood an ancient teleportation array.

The teleportation array covered an area of ​​about 100 zhang in diameter. It was made entirely of a dark blue stone, and its surface was covered with dense cracks and dust, as if it could collapse at any moment.

The edges of the teleportation array were covered with various complex runes and patterns, most of which were already blurred and indistinct, with only a few places where some outlines could still be vaguely discerned.

In one corner of the teleportation array, there was a mark about the size of a palm—

It was a coiled dragon totem, with ancient and vigorous lines. Although it was mostly worn away, the exquisite craftsmanship of the carver was still evident.

Feng Wu was squatting next to the teleportation array, holding a dark blue stone the size of a millstone in her hand, carefully comparing it to a broken gap.

Hearing the noise, she looked up and saw Meng Chuan's figure, a hint of joy flashing in her eyes:

"Lord Mengchuan, you've arrived? I've found a teleportation array left behind by the primordial dragon race!"

Upon hearing this, Meng Chuan's face lit up with joy, and his bright eyes immediately fell on the teleportation array. "This is the teleportation array?"

He walked to the teleportation array, squatted down, and carefully observed the runes and patterns.

"Yes."

Feng Wu stood up, dusted off her hands, pointed to the dragon mark on the teleportation array, and said with a hint of excitement in her voice:

"Look at this mark—it's the exclusive mark of the 'Black Dragon lineage' among the primordial dragon race!"

"The Black Dragon lineage is the war-fighting branch of the dragon race, frequently traversing various worlds to expand the dragon race's territory and plunder resources!"

"The teleportation array they left in this universe must be connected to the primordial world!"

Looking at the dragon mark, Meng Chuan couldn't help but feel fortunate.

Fortunately, he had promised Feng Wu that he would bring her out of that other world.

If he were to see this abandoned teleportation array, he would never recognize that the markings on it are the exclusive markings of one of the branches of the Primordial Dragon Clan.

"Can you repair this teleportation array?"

Meng Chuan looked at Feng Wu and asked.

He wasn't good at formations, so he could only rely on Feng Wu in that regard.

Feng Wu nodded, her tone filled with confidence:

"I studied array formations when I was with the Phoenix Clan. Although I'm not top-tier, I'm confident I can repair a teleportation array of this level."

She paused, then changed the subject, her tone becoming more helpless:

"However, this teleportation array has been abandoned for too long, and a lot of materials are needed to restore it to use."

"I have some common materials myself—such as star sand, void stone, and primordial yellow soil."

"But there are a few rare materials that I don't have on hand."

Meng Chuan didn't waste any words and said directly, "Tell me what materials you need. I'll find a way to get them!"

Seeing his straightforwardness, Feng Wu stopped being polite and counted on her fingers:

"Required: Nine Heavens Profound Iron Essence, Void Crystal Core, Ten-Thousand-Year Warm Jade, Nine Nether Soul Steel, Chaos Stone Marrow..."

She rattled off seven or eight kinds of materials, each one an extremely rare and precious treasure, one that an ordinary cultivator might not be able to find even once in their entire life.

After listening, Meng Chuan nodded: "Come on, come back to the Primordial Starfield with me."

With a wave of his hand, a gentle force enveloped Feng Wu, and the two of them vanished from their spot in an instant.

……

The Primordial Starfield, the Domain Lord's Mansion.

Meng Chuan led Feng Wu directly to the treasury of the Domain Lord's Mansion.

This treasure trove was left over from the time of Emperor Sangyu, and it contains all kinds of rare and precious materials accumulated over hundreds of thousands of years. It is dazzling and has everything.

Meng Chuan pushed open the treasure vault door and said to Feng Wu, "Take whatever materials you need."

Feng Wu stared wide-eyed at the mountain of treasures piled up in the vault.

Although she had once been a member of the Primordial Phoenix Clan and had seen a lot of the world, the treasures in this vault still made her gasp in astonishment.

"These...these are all yours?"

She turned to look at Meng Chuan, her voice tinged with disbelief.

Meng Chuan nodded: "It was left behind by the former domain lord. Now, it's all mine."

Feng Wu swallowed hard and, without further ado, went straight into the treasure vault to begin selecting materials.

She acted quickly, clearly very aware of her own needs.

In less than the time it takes for an incense stick to burn, she found five or six of the necessary materials in the treasure vault.

However, her brows remained furrowed.

"Two more things are missing."

She walked up to Meng Chuan, her tone grave, "Nine Heavens Profound Iron Essence and Chaos Stone Marrow are not in the treasure vault."

Meng Chuan frowned.

He had also heard of these two materials.

Nine Heavens Profound Iron Essence is one of the main materials for forging top-grade innate imperial weapons, and it is extremely rare.

Chaos Stone Marrow is a legendary treasure, said to be the essence left over from the beginning of chaos, containing the mysteries of the laws of chaos.

Both of these materials are extremely rare and unavailable through ordinary channels.

"You wait here, I'll think of something."

Meng Chuan left a sentence, then his figure moved and disappeared from the spot.

……

Crimson Sky Starfield, Domain Lord's Mansion.

Jun Haoxuan was handling official business when he heard the news of Meng Chuan's visit. He immediately put down the jade slip in his hand and came out to greet him personally.

"Lord Mengchuan, what a rare guest!"

Jun Haoxuan smiled and bowed with his hands clasped in greeting.

Since that battle more than a decade ago, he has been completely convinced of Meng Chuan's strength and his attitude has become much more polite than before.

Meng Chuan didn't waste any words and went straight to the point: "Lord Jun, I need two materials—Nine Heavens Profound Iron Essence and Chaos Stone Marrow. Do you have any here?"

After parting ways with Feng Wu, he first went back to the Lord's Mansion of the Primordial Star Domain and then to the Tianyan Star Domain. He found all the other materials, but he was missing these two.

After listening, Jun Haoxuan pondered for a moment and said:

"I don't have any Nine Heavens Profound Iron Essence. However, I do have a piece of Chaos Stone Marrow."

He took out a fist-sized piece of jade, its entire surface a chaotic color, and handed it to Meng Chuan:

"I obtained this by chance in a secret realm during my travels through the universe many years ago. It's not of much use to me. But since Lord Mengchuan needs it, I'll give it to you."

Meng Chuan took the Chaos Stone Marrow, feeling the fluctuations of the chaotic laws contained within it, and a hint of joy flashed in his eyes.

"Thank you, Lord Jun. I will remember this favor."

He paused, then added, "We're still missing one material—Nine Heavens Profound Iron Essence. Does Lord Jun know where to find this?"

Jun Haoxuan pondered for a moment and said, "Let me inquire about it for you. The universe is vast; there must be someone who possesses such a treasure. Give me some time, and I'll keep an eye out for you."

Meng Chuan nodded: "Thank you for your trouble, Lord Jun."

After leaving the Crimson Sky Starfield, he traveled to several super starfields and visited many domain lords he had known more than a decade ago, but he still could not find the whereabouts of the Nine Heavens Profound Iron Essence.

This material is extremely rare.

Even if they did exist, their respective owners treasured them and were reluctant to show them to others, let alone transfer them.

Meng Chuan continued to search with all his might...