Under Mu Chen's continuous supply of immortal power, ordinary people need to smelt the starmeteorite iron for at least half a month, and in Mu Chen's hands, it has been smelted into a puddle of molten iron in just half a day.

It is said to be a puddle of molten iron, but in fact it can be easily filled even if it is poured into a lake.

"Get up!" Mu Chen's eyes narrowed slightly, his arm was raised suddenly, and the molten iron instantly turned into a torrent and rushed out of the mouth of the furnace.

"Childe!"

The Biluo Fairy exclaimed in surprise and hurriedly stepped aside.

"Condensation!"

Ignoring the surprise of the Biluo Fairy, Mu Chen shook his hands, and in an instant, an invisible immortal power condensed out of thin air, turning into an invisible abrasive, imprisoning this massive amount of molten iron in it, and constantly condensing.

"Childe, don't you need abrasives?" Seeing that Mu Chen turned into abrasives with immortal power, Fairy Biluo was surprised.

"Not necessarily!"

Mu Chen shook his head, there was too much molten iron, and ordinary abrasives couldn't hold it at all, and he was unwilling to divide the steps of condensation, so he could only use immortal power to condense it.

"But this is very consuming of immortal power!" said Fairy Biluo with a frown.

Although she doesn't know how to refine weapons, she still knows a little bit about some of the steps of refining weapons.

Just now, Mu Chen smelted this mountain-like starfall ore iron in one go, which had already surprised her, and at this moment, Mu Chen still had to continue to consume immortal power to solidify the sword embryo, which was simply crazy in her opinion.

Not to mention much, the immortal power used by Mu Chen to smelt the starmeteorite iron just now, I am afraid that even the golden immortal powerhouse cannot afford to lose it, not to mention that after smelting the starmeteorite iron, he will continue to condense the sword embryo.

"Don't worry, I can still hold on!" Mu Chen smiled silently, he also had to admit that this series of practices was indeed very depleting of immortal power.

Rao is that he has the Liuhe World as a support, but in the Liuhe World, the spiritual power generated by the thousands of spirit stone essences can barely supply his immortal power consumption.

At this moment, the power of the entire Liuhe World was almost drained by him.

In the process of condensing the sword embryo, he secretly probed his divine sense into Liuhe Time, only to see that the entire Liuhe World had already become a miasma, and countless flowers and trees had withered, looking very decadent.

"What's going on, is the maze going to collapse?"

"How do I feel that the spiritual power of the labyrinth is constantly draining, what is going on!"

In the Liuhe Labyrinth, there has been no time to be released by Mu Chen's blood clan, Medusa tribe, and nature elves. The Dark Elves, Dwarves and other clansmen have been gathering together since they cracked the Liuhe Labyrinth Array half a year ago.

Since then, they have been waiting for Mu Chen to release them from the labyrinth, but they have never received the message to let them go, but have witnessed the earth-shaking changes in the entire Liuhe Labyrinth.

First of all, the barrier of the Liuhe Labyrinth was gone, and the entire Great Array World was completely integrated, and secondly, the Liuhe Labyrinth also began to expand wildly, more than dozens of times larger than the original, and they sometimes even wondered if this had really become another world.

Unfortunately, there was no one to answer, and although they were skeptical, they were not sure.

Now, the news that Mu Chen wants to let them go has still not come, but the world has undergone earth-shaking changes again, the whole world is constantly declining, countless vegetation is constantly withering, and between heaven and earth, there is a miasma of smoke, as if the end of the world is coming, which instantly caused everyone's panic.

As the world master of the Liuhe World, Mu Chen saw the actions of these people clearly, and he couldn't help but feel a little helpless.

From the moment he left the Liuhe Labyrinth, he received an order for the Wandao Heavenly Maiden, and rushed to Wanfa Heaven non-stop, without having a chance to let these people out, and occasionally he felt a little guilty when he thought about it.

At this moment, seeing that these people were always frightened by the changes in the Liuhe World, he couldn't help but feel a little helpless in his heart.

"It seems that if you find time, you have to explain it to them!" Mu Chen thought to himself, and at the same time, he secretly decided that he must find an opportunity to strengthen the power of the Liuhe World in the future.

To a certain extent, the strength of the Liuhe World is equivalent to his strength. As long as the Liuhe World is not destroyed, he will have an endless stream of inexhaustible power.

On the contrary, at this moment, because the Liuhe World is not strong enough, once the power he consumes is excessive, it will cause changes in the Liuhe World, which is not what he wants to see.

The process of forging a sword and condensing the sword embryo is very important, and in this process, many important things need to be condensed into it.

Under the support of Mu Chen's powerful immortal power, the torrent-like molten iron continued to cool and solidify.

At the moment when the molten iron was about to completely solidify, Mu Chen waved his hand and took out another meteorite the size of a stone disk.

This meteorite, exuding gray power, gives people a very mysterious feeling.

At the moment when this meteorite appeared, the power of heaven and earth around it was constantly surging, and after touching the meteorite, it immediately melted and dissolved.

"Childe, what is this?"

Biluo Fairy exclaimed, she had never seen such a wonderful meteorite in her life.

"This is the Chaos Primordial Stone!" Mu Chen said in a deep voice.

The moment the words fell, on him, a mysterious power, carrying the color of golden earth, but not the power of gold and earth, instantly merged into the chaotic primordial stone.

"Boom!"

The Chaos Primordial Stone burst in an instant, turning into countless powders.

"Go!"

Seeing this, Mu Chen was secretly happy, and with a wave of his hand, these countless chaotic primordial stones instantly merged into the sword embryo.

Before, Mu Chen was also worried that the Chaos Primordial Stone was too powerful, and any power, even matter, could not be easily approached, otherwise it would be instantly eliminated and turned into Chaos Qi, so it would be a fool's dream to refine this Chaos Primordial Stone.

But with the help of the system, this Chaos Rough Stone was easily controlled, and the mysterious power of the system was even more beyond Mu Chen's imagination.

In the system, there is the legendary power of Hongmeng, the so-called heaven and earth, Hongmeng gives birth to chaos, chaos gives birth to all things, if the only thing that can restrain the power of chaos at this time is only the power of Hongmeng.

At this moment, seeing the power of Hongmeng, Mu Chen couldn't help but secretly rejoice.

I'm afraid that in this world, there is only one person who can use the Chaos Primordial Stone to refine weapons.

As the Chaos Primordial Stone powder merged into the sword embryo, the huge sword embryo instantly condensed, and at the same time, the power of heaven and earth was frantically infused, continuously rushing into the sword embryo.

For a while, the entire sword embryo was like an unfed gluttony, no matter what the elemental power of heaven and earth was, as long as it was close, it would not refuse to come, and it would swallow it all.

"It's time!"

Mu Chen secretly said in his heart, and instantly lifted the grinding tool formed by the gathering of immortal power, and the powerful immortal power forcibly solidified the sword embryo in the void.

Because of the excessive amount of starfall iron used, although this sword embryo was suppressed by Mu Chen's powerful force, after solidification, the sword embryo was still dozens of zhang long and several zhang wide, almost completely crowding the entire workshop.

"Childe, the sword embryo has been formed, and the next step is to condense the formation, why don't I go and find someone from the refining workshop to come and help?" Seeing this, Fairy Biluo hurriedly shouted.

"No need, you help me stabilize the sword embryo, and I'll concentrate on my own!" Mu Chen waved his hand and said in a deep voice.

"Do you condense the formation yourself?" Fairy Biluo was taken aback and looked at Mu Chen incredulously.

Mu Chen can have such cultivation at such a young age, in her opinion, it is really rare, and now, the half-finished product of this sword has also come out, she thought that Mu Chen would find someone to help with the condensation array, but she didn't expect Mu Chen himself to even be able to condense the array.

"Okay!"

After hesitating for a moment, the Biluo Fairy stepped out, and the powerful immortal power immediately poured out, solidifying the sword embryo into the void.

"Steady!"

Mu Chen commanded, his feet moved, and he rose to the sky, his hands swiped out of thin air, and one by one strange runes immediately condensed out of thin air.

As soon as the rune came out, he immediately slammed into the body of the sword.

"Buzz!"

The blade shuddered violently, as if a hungry man had eaten a delicacy, and instantly engulfed the rune.

Immediately after, Mu Chen began to condense the second and third runes.

A steady stream of runes condensed out, constantly hitting the sword body.

This condensation array is a technical job, and if you are not careful, a powerful magic weapon will fall to the level in an instant, or even be destroyed.

Therefore, Mu Chen did not dare to be careless about the condensation array.

Moreover, what he wanted to refine was a nine-attribute immortal sword, not a single-attribute magic weapon, and on top of the condensing array, it was more than a thousand times more difficult than other magic weapons.

Biluo Fairy only needs to stabilize the sword body, although this sword body weighs hundreds of thousands of catties, but for her generation of immortals, it is not difficult to solidify all the time, but Mu Chen is different, after continuously condensing countless runes, Rao is he can also continuously extract spiritual power from the Liuhe world to supplement himself, but his mental power and physical strength are also a little unbearable.

On his forehead, fine sweat continued to fill his face, and his face gradually became pale.

"Childe, you have already solidified more than 38,700 runes, why haven't you formed a formation yet!"

Fairy Biluo had been paying attention to Mu Chen, and seeing that Mu Chen's face was pale and tired, she couldn't help but shout hurriedly.

You must know that although she doesn't know how to refine weapons, she still knows some basic knowledge of refining weapons, even if an ordinary immortal weapon, at most 10,000 runes is enough to condense the array, but at this moment, Mu Chen has already played more than 30,000 runes, and she is still condensing runes in a steady stream, which is simply a manifestation of demonism.

If you are an ordinary person, I am afraid that you will already be tired.

"It's still early, this sword needs at least nine million nine hundred and ninety thousand runes to condense the formation, you hold on first!"

Mu Chen's eyes were indifferent, and he said in a deep voice.

As he spoke, his hands did not stop, still condensing the runes and entering the body of the sword.

As runes poured into the sword body, the frequency of the sword body trembling became higher and higher, and gradually, a powerful force began to slowly emerge on the sword body, causing the spiritual power of the surrounding heaven and earth to continue to riot.

Mu Chen's energy was limited after all, although he was constantly supporting, but after smelting less than 50,000 runes in a row, the whole person finally crumbled, had a headache, and almost fainted.

"Childe, why don't you take a rest first!" Seeing that Mu Chen's condition was not good, Fairy Biluo was in a hurry and hurriedly shouted.

"Hmm!"

Mu Chen let out a painful cry and slowly landed on the ground, covering his head with both hands, only to feel a tearing pain in his mind, making him worse than dead.

His five primordial gods were so weak that they almost collapsed at the moment, which was a manifestation of excessive consumption of immortal power and spiritual power.

"You watch first, I'll recover!"

Mu Chen glanced at Fairy Biluo, then sat cross-legged and shouted to the system: "Change a pill, I must immediately recover my spiritual power, in addition, how many spirit stones I have left, immediately exchange them for the essence of spirit stones for me, integrate into the Liuhe world, and let the spiritual power of the Liuhe world recover immediately!"

Hearing this, the system hurriedly responded, and then, the mechanical voice immediately sounded.

"Ding! Congratulations to Mu Chen for obtaining the Nine Rank Immortal Pill, the Innate Mixed Yuan Pill!"

"Ding! Mu Chen's three million top-grade spirit stones have been successfully deducted!"

"Ding, there are still 180 million top-grade spirit stones in the system interface, and 180,000 spirit stones have been successfully exchanged!"

"Ding, the essence of 180,000 spirit stones has been integrated into the Liuhe World and started the journey of world upgrading!"

"Boom!"

At the moment when the system's voice fell, a surging force surged out of Mu Chen's body.