Xu Mu's soul twitched, and a bad feeling surged into his heart.

The amount of immortal qi in the body is a little insufficient!

If you stop practicing the sword technique at this time, you will definitely fail!

At that time, if you want to refine those heaven and earth spirit materials again, I'm afraid it will be extremely difficult!

The way of cultivation is to pay attention to one go!

The same is true when refining sword pills with ten thousand swords and refining sword techniques!

Stop, you can't stop!

No wonder, Feng Peining would say that this sword refining technique is "extremely crazy and dangerous"!

I see!

Golden Lung Earth Fire, only the words occasionally appear in the inheritance classics of individual powerful sects, but no one has ever used them!

You must know that even if it is the first sect on the bright side of Yakniu Mountain, Tianyan Sect, its earth fire crack is only the fire of the earth lungs!

As far as refining tools are concerned, the effectiveness of the Earth Lung Fire is not known how many grades it is inferior to the Golden Lung Earth Fire!

If the flame grade is too poor, not only will the refining time be greatly extended, but even the grade of the finished magic weapon will be greatly reduced!

According to Feng Peining's thoughts, she originally planned to let Xu Mu, with the assistance of Chen Shuixuan, use the smelting ground of the Taibai Sword Sect to burn the Melting Divine Gold, and then spend a few more years refining the Sword Pill!

At that time, Chen Shuixuan drove Shenhong and Xu Mu away, leaving her no chance to say her plan.

It's just that Xu Mu doesn't know all this.

He also thought that it was because the accumulation of Qianyuan Concept was weak, so there was no golden lung and earth fire, which was a normal situation.

That's why he made up his mind to refine the sword pill with his own heart fire!

And the propylene fire heart flame technique that Xu Mu mastered, under the urging of the immortal yuan's qi, the power increased several times, and it was possible to quickly melt these divine golds!

Otherwise, no matter what he did, it would be difficult for him to make the matter of refining the sword pill possible!

Of course, in Xu Mu's opinion, these things are not strange at all, and they are natural!

"After all, Lao Tzu cultivates the Immortal Dao system!"

Xu Mu was distracted and used for two purposes, while urging the fire heart flame technique, and at the same time running the Qiankun Returning to Tibet Recipe to calculate a trivial matter.

After a moment, a glimpse of the heavens!

Click!

The sound of thunder exploding appeared in the sky above Qianyuanguan.

Chen Shuixuan, who was asleep, was awakened by the thunder, pinched the trick silently for a moment, and cursed secretly.

"This guy is really hard! Isn't it okay to refine sword pills after dawn? Dao Ye is still sleeping!!

Immediately, he shook his head helplessly and quietly came to the outside of the practice room.

Sit down cross-legged and protect the Dharma for Xu Mu.

A gentle voice entered Xu Mu's ears.

"Xiao Mu, meditate and concentrate, don't be impatient or impatient, and protect the Dharma for your teacher. Is there anything you need Master's help with?"

"Master, do you have any extra divine gold, give a few pieces to the disciple." Xu Mu realized the vibration in the dantian, and caused a drop of crystal green liquefied from the tip of the rusty sword to turn into an energy airflow.

"Don't be impatient, don't think cranky, protect the Dharma for you! It's really not good, the long sword I use now for my own use, I'll give it to you......" Chen Shuixuan took off the long sword behind his back.

Flicked the sword silk, and his expression was full of reluctance.

"Huh?! You'd better keep it for yourself!" After Xu Mu transmitted the voice, he added, "I'm afraid that you will regret it in the future and be beaten to death by you......

"You bastard...... It's a little conscientious, but it's not much!" Chen Shuixuan scolded with a smile and told Xu Mu not to be distracted.

Xu Mu no longer answered, with Chen Shuixuan guarding outside, his heart was greatly settled.

A trace of extremely weak turquoise air flow was led by him into the Yin Fish Mouth of the Daoji Continent.

After an instant, a wisp of pure immortal qi flowed out of Yang Yu's mouth.

As he continued to refine the energy flow of the crystal green liquor, the immortal qi lost in his body began to be quickly replenished and gained.

Call!

The mana of the C-Flame Heart Flame Technique increased again, and the crimson flame doubled in size!

The nine blue and white fragments were slowly melted and liquefied into a ball with the Ming Huang Spirit that enveloped them!

Mysterious bronze, dragon blood Xuanjin, Luo Tianshen gold, refining the original spiritual materials of the Sheshen Sword......

Under the scorching red flame of the heart, it swells and rolls, entwined with each other!

The liquid light cluster, which was about a foot and a half in diameter, kept changing color with the high temperature of the heart fire!

Sometimes it turns silvery-white, sometimes it turns cyan, sometimes it changes to bright yellow, sometimes it changes to dark yellow......

According to the Ten Thousand Swords Unified Sword Refining Technique, this is the most critical stage!

The color of the spiritual liquid is fixed at the color of the divine gold, then the characteristics of the sword pill will be inclined to that divine gold in the future! Z.br>

To put it bluntly, the current stage is the battle between the master and servant of all kinds of gods!

Xu Mu looked at the liquid light cluster, smiling, and comfortably absorbing the turquoise energy flow floating above the Dantian Daoji Continent.

In fact, he also wanted to know in his heart what kind of divine gold would prevail!

As time passed, the color of the liquid light cluster changed more and more slowly.

But, it's still changing!

In the final battle of colors, only the colors of silver-white, cyan, and yellow remained!

Every quarter of an hour, it slowly changes!

Xu Mu simply closed his eyes and recuperated, just urging the C-fire Heart Flame Technique, and at the same time constantly absorbing the energy flow to restore his cultivation.

As it was almost dawn, the color of the liquid light cluster finally stabilized!

Xu Mu's heart shook, he opened his eyes slightly, and looked at the liquid light cluster a little stunned!

In the end, the color that stabilized was not any of the three colors!

Rather, black!

He had never seen a sword cultivator use a black blade!

Black spiritual liquid, the sword pill refined, nine times out of ten, it will not be the second color!

The effect that can be achieved by the situation in front of him is more than 108,000 miles different from what Xu Mu thought in his heart!

Previously, he could still imagine being a chic swordsman who fascinated thousands of beautiful girls, "A sword goes west, only I am the only one!"

And now, he can basically only carry a black long sword, or hold a black sword pill, and shout, "Baby, kill the enemy for me"!

A black sword shadow slashed through the air!

The hostile dying man's head rolled to the ground, and he didn't forget to comment, "I didn't expect you, your heart is black, and your sword is even blacker......

If this is said, I don't know if many people will laugh out of their big teeth!

Xu Mu was unwilling!

He didn't believe what was in front of him.

Fiercely refining the second drop of crystal green liquid, he violently replenished the cultivation that did not drop much!

The flame of the heart of the fire soared and burned, and the crimson high temperature almost burned the void!

And the color of the liquid light cluster still hasn't changed to any other color.

Even, more, black!

"What's wrong, Komaki, but what's not going well?" Outside the practice room, Chen Shuixuan yawned and said with concern.

"No, it's nothing...... This is the initial stage. The disciple is still continuing......" Xu Mu replied embarrassedly.

Close your eyes slightly and take a deep breath.

The Qi of the Immortal Yuan is not urged by him like a spirit stone, and the power of the Flame Heart Flame Technique is even greater!

Suddenly, Xu Mu had an understanding!

He thought of the Daoji Continent within the dantian!

The Daoji Continent exists in the form of the Yin and Yang Taiji Bagua Diagram!

The core of the Daoji Continent is the Yin Fish and the Yang Fish!

The conversion of the black yin fish and the white yang fish into each other will have a great effect on helping him refine the qi of the immortal yuan!

Yin and Yang can be converted!

Come to think of it, black and white, it will be the same!

The cathode produces yang, and the anode produces yin!

"Perhaps, the black pole will turn white, and the white pole will turn black!" Xu Mu comforted himself in his heart.

A moment later, the fire burned even more violently!

In this way, the calcination never stops!

When the Qi of the Immortal Yuan is scarce, it will be restored with the Crystal Green Liquid!

And Xu Mu was worried that the supply of crystal green liquid would not be available, so he directly stopped the supply of the immortal yuan qi and emerald energy airflow of the nine stars in the sky above the Daoji Continent!

At the same time, he also kept the Celestial Light Star Immortal Sutra running in his body all the time!

In the Qianyuan view, the aura of heaven and earth, which was not very rich, was violently refined by him.

The light of the sun, the light of the moon, the light of the stars, all kinds of natural light, lingered around him.

Xu Mu's expression was meticulous, surrounded by colorful divine light, like a handsome young immortal!

The day passed.

The color of the divine gold liquid has become more intense, and it is so black that it shines!

"Come again!" Xu Mu felt that the color was still changing, and continued to refine according to the method of refining the sword technique of ten thousand swords!

Two days passed.

The color of the divine gold liquid regenerates and changes, and the bright color fades away and becomes jet black!

And underneath the heart fire ball, a lot of mottled metal residue has fallen!

These are not other things, but the impurities contained in the fragments of the sword body of the Divine Sword and those divine gold!

"I knew you were going to change! Go on!" Xu Mu let out a low sigh, and his brows gradually stretched.

The third day passed quickly.

The color of the divine gold liquid changed from jet-black to dark, and if it wasn't for the intentional illumination of the light, it was almost impossible to see any light shining!

Those mottled impurities, falling even more!

"There is hope! Haha!" Xu Mu was in a good mood and was happy.

"What's the matter, good apprentice? Stay on top of your mind and don't get mad!" Chen Shuixuan heard Xu Mu's weird laughter outside the house, and couldn't help but remind him.

"Nothing, Master! Everything is under the control of the disciples!" Xu Mu cut the railway.

In this way, Xu Mu never gave up, he was waiting for the final miracle!

Time passed.

Day 4.

......

Day 5.

......

Day 8.

......

On the ninth day.

The color of the divine gold liquid has been fixed and turned into a pure black color!

This color is basically the same color as the yin fish on the Daoji Continent!

Moreover, when he looked at the pure black god gold liquid, he even had the illusion that his mind was slowly devoured!

Not to mention the light, any light shining on the pure black liquid will not reflect the light!

"What the hell...... Could it be the method of nine refinements mentioned in the Ten Thousand Swords Returning to One Sword Refining Technique?!!! Xu Mu's heart shook violently, and he felt like he wanted to cry to death.

"What's wrong, Komaki? Are you still in control?" Chen Shuixuan felt the apprentice's mood fluctuations and said nervously.

"In ...... Right?" Xu Mu replied with a weak voice.

Although he didn't want to admit it, after his mind was immersed in the divine gold liquid, he understood everything in an instant.

"Black...... It won't change again! At the very least, in the current situation, it will not change at all......

After a few breaths of silence, Xu Mu recovered from his grief.

With a sigh, he moved on to the next step.