It took about ten minutes for Lu Xueqi and Tian Ling'er to reasonably kill the thick-skinned and thick-skinned Black Stone Behemoth.

"You just spent a lot of battle True Yuan, so don't go into the cave behind, right?" Mu Du looked at some of the second daughters and said tentatively.

Obviously, they rejected the offer immediately.

This black stone cave is so weird and mysterious, what if there are other demons similar to the black stone giant beast? They didn't have to worry about letting Mu Dui go deeper alone.

After all, although their own true yuan has consumed a lot, the magic weapon in their hands is still full.

Especially Tianya and Mo Xue, these two Nine Heavens Divine Weapons, released the true yuan in them with all their might, even ordinary masters of the Shangqing Realm are not opponents.

"Okay then, but if there are no demons in the future, you can quit first, and I'll stay and absorb the power of refining earth fire~"

Unsurprisingly, Tian Ling'er and Lu Xueqi still shook their heads and decisively refused.

Even if there were no demons, absorbing the power of refining earth fire was a very dangerous thing in itself, and they would definitely have to stay by Mu Dui's side to protect him.

With a wry smile in his heart, Mu Du didn't know what to say, so he propped up a defensive light curtain to protect the two, and then walked towards the cave in front of him.

At the bottom of the cliff was only this huge cavern with a diameter of nearly ten zhang, from which the blackstone behemoth had been drilled before.

Originally, the Blackstone Behemoth was the owner of this cave, but since the six-tailed demon fox came, he has become a gatekeeper.

But by the time Mu Du and the three of them entered, the three-tailed demon fox had already gotten into the locket box with the six-tailed demon fox and hid.

At the same time, she also threw the Xuanhuo Jian into the lava lake on the other side as Twilight had ordered.

"This can't be the crater of an underground volcano, right?" Several people were amazed when they saw this, especially for Lu Xueqi and Tian Ling'er, it was the first time they had seen an underground volcano.

"There are no demons in here, it seems that the tentacle monster from before is the strongest monster in this black stone cave!" At the same time as Mu Twilight spoke.

Lu Xueqi and Tian Ling'er also checked the surroundings with their divine senses, and after finding that there were indeed no demons, the vigilance on their faces relaxed slightly.

"Senior brother, are you going to retreat now to absorb the power of earth fire?" Tian Ling'er asked.

"Well, I'm actually just trying, after all, we still have to rush to the East China Sea Liubo Mountain as soon as possible." Mu Du nodded.

"Then we'll give you Dharma protection right here!" Tian Ling'er said.

Although Lu Xueqi on the side did not speak, it was obvious that this was what he meant.

"By the way, should I go up and call my mother down? After all, the demons in the black stone cave have been cleared by us, so there is no need to worry about any demons escaping! ”

"Uh..." Mu Du looked at Tian Ling'er, thinking to herself, when did this little girl become so smart?

"Don't bother the master, it's enough to have the two of you by my side to protect the Fa!" Mu Du hurriedly spoke.

With Su Ru's age and experience, if she comes down, she may see something.

"Hmm... All right! Tian Ling'er thought about it and didn't force it anymore, out of a little caution in her heart, she didn't want to leave, leaving Lu Xueqi and Mu Du here alone.

Smiling and touching her little head, Twilight walked to the lava lake alone with the Red Flame Sword, pretending to look at it before leaping to a naturally formed rock platform in the center of the lava lake.

The art of cultivating magic weapons is the basic magic that every monk must know, after all, the monks of this world mainly rely on magic weapons and flying swords to fight.

Mu Du is naturally no stranger to this.

"From—"

With the traction of the power of the magic technique, streams of rich fiery red aura rose from the surrounding magma, and quickly converged towards the Red Flame Sword in his hand.

The temperature of the entire cave space skyrocketed by dozens of degrees.

It's just that in the fiery red aura, there are obvious black smoke visible to the naked eye, which is the fire poison attached to the power of earth fire.

"Lian—"

As soon as the seal on his hand changed, a red flame like substance lit up on the Red Flame Sword, absorbing the power of refining earth fire while isolating the fire poison like black smoke from the outside.

Time passed minute by minute, and the refining process did not appear any abnormal.

However, Lu Xueqi and Tian Ling'er by the lake did not relax their vigilance because of this, and they did not have the slightest impatience, except for parting part of their minds to guard against the demons that might appear around them, the rest of their minds were always on Mu Dui's body.

However, Mu Du gradually frowned, and after a while, he stopped absorbing and refining.

Seeing this, Lu Xueqi and Tian Ling'er suddenly felt tight, and quickly crossed the magma lake and came to Mu Dui's side.

"What's the matter, junior brother? Did something go wrong? Tian Ling'er asked worriedly.

"Well, the power level of the Earth Fire here is still not enough, and if you want to upgrade the Red Flame with this, it will take at least a few years or even more than ten years..."

He wasn't lying.

Originally, he just thought that it would be good if he could upgrade Chiyan by the way, but if it takes more than ten or twenty years, then forget it, the time is too long.

If you let others know Mu Dui's thoughts, they will definitely scold him for not knowing what to do, you must know that the Nine Heavens Divine Soldier is already the most precious magic weapon flying sword in this world, let alone ten or twenty years, even if it is one or two hundred years of practice, I am afraid that there will be countless monks willing to do it.

For example, it takes thousands or even thousands of years for heaven and earth to be conceived, and more than ten years is really negligible compared to one.

Fortunately, now beside him are Tian Ling'er and Lu Xueqi.

Because these two girls are not very old and have not been cultivating for a long time, they don't feel that there is anything wrong with Mu Dui's dissatisfaction.

"What then, are we going to leave now?" Tian Ling'er asked.

"Wait, it takes a long time for the power of earth fire here to be used to upgrade the red flame, but it is quite fast to replenish the true element!"

The Red Flame Sword, as his most commonly used flying sword, basically had no chance to store the True Yuan in it, and this time it was a rare opportunity, so he naturally wanted to fill it up.

What's more, he hasn't gotten his hands on the Xuanhuo Jian yet.

Through his divine sense, he had already locked on to the position of Xuanhuo Jian as soon as he entered here, and now it was a suitable time and reason.

"-Don't worry, if you just replenish the true yuan, it may be enough for two or three times, and you won't delay going to see the full moon well!"

Tian Ling'er couldn't help but blush when she heard this, and Lu Xueqi on the side also flashed a different look in her eyes.

So, in order to be in a hurry, Mu Dui sped up his speed, and urged the magic trick in his hand with all his might, and in an instant, the entire magma lake seemed to riot.

Countless dark red True Elements converged towards the platform in the center of the lake, almost submerging the bodies of the three people.

"Ahh

Tian Ling'er was taken aback, and subconsciously exclaimed.

Lu Xueqi also looked at Mu Du worriedly, thinking that he had some accident.

"It's not me—there's something in this lava lake—"

As soon as these words came out, Lu Xueqi and Tian Ling'er were both slightly stunned, and immediately urged Tianya and Amber Zhu Aya to be on full alert.

"Are there any other powerful demons here?" Tian Ling'er muttered in a low voice, seeing this terrifying momentum, she had unconsciously retreated in her heart.

If it is really a demon haunt, this movement is indeed a bit too big, Tian Ling'er feels that at least it is possible because of the demon infestation in Shangqing Realm, and the three of them are probably not opponents in the opponent's home field.

However, Lu Xueqi shook her head when she heard this.

"No, there's no demonic energy, it shouldn't be a demon-"

"Senior Sister Xueqi is right, it shouldn't be a demon..."

Tian Ling'er was stunned for a moment, and suddenly puffed up her little face with some dissatisfaction.

However, he was soon attracted by the sight before him, and saw an emerald jade ring flying out of the magma lake in the firelight.

If you look closely, there seems to be a small fiery red mirror inlaid in the middle of the jade ring, and there seems to be a lifelike dragon-shaped flame totem in the center of the small mirror, constantly changing and flickering, flickering and flickering.

"What a magic weapon!"

Feeling the strong warning that the Tianya Divine Sword in her hand had never had, Lu Xueqi's heart sank suddenly, but the current situation was not clear, so she was very cautious and did not make a move.

"Don't make a move, it seems like it's just a treasure... I don't feel danger and hostility from it... It seems that a very kind flame force is calling me..."Mu Dui tried his best to use his acting skills, staring at the jade ring and muttering in a low voice.

"Huh? Could it be that you have just absorbed too much power of earth fire, so you have brought out this treasure? ”

There was no doubt that this jade ring also emitted strong flame energy, so Tian Ling'er's guess seemed very reasonable.

"What's wrong?"

At this moment, Su Ru's anxious voice came from the direction of the entrance of the cave, and then accompanied by a sharp sound of breaking the air, Su Ru, who was originally guarding outside the black stone cave, appeared beside the three of them with a flying sword.

"Mother! It's like this—"

Seeing that the jade ring floating in the air was just flickering continuously, and there was no other further action to attack, Tian Ling'er's courage was also much greater.

Hearing Su Ru's interrogation, he immediately told her what had happened before.

"Whew, I see! I was so worried just now! Su Ru said in a frightened tone.

The movement just now really scared her, after all, at this time, these three people excluded their natural potential and importance to the sect, one was her biological daughter, the other was the son-in-law she identified, and the other was the most favored apprentice of Shui Yue, who had the closest relationship with her.

She couldn't accept any of them.

However, she was also a great monk who had lived for more than three hundred years, and she quickly calmed down.

"Well, it's probably so, yes, this magic weapon should have been sleeping in this fire magma, but today because Dusk inadvertently attracted too much spiritual power in the magma this time, it stimulated the power of this magic weapon..."

"Then mother, do you know what kind of magic weapon this is?" Tian Ling'er asked curiously.

"I don't know if I can know this, after all, there are too many magic weapons in the world, and there are some magic weapons conceived in heaven and earth that have no names at all before they are born, but——"

Speaking of this, Su Ru looked at the jade ring floating in mid-air and suddenly wrinkled.

"But what?"

"But I always feel that this magic weapon looks a little familiar, but I can't remember where I have seen it again..."Su Ru said and recalled it carefully, and found that she really hadn't seen this magic weapon, and couldn't help but feel a little strange.

"Forget it, Twilight, try to see if you can put this magic weapon away! The attributes of this magic weapon belong to the same fire system as the Shaoyang Sword Technique you cultivated, plus it can be triggered by you, it should be related to you! ”

The magic weapon of war, those who are destined to live in it.

This sentence is not just a lie in this world, because the higher the level of the magic weapon in this world, the more amazing the spirituality.

Just as wizards in the Harry Potter world choose wands, when monks choose magic weapons, magic weapons also choose monks.

Only when both parties are in harmony can the full power of the magic weapon be truly unleashed.

Of course, this is for a normal magic weapon, but the Xuanhuo Jian in front of me is a special one that is no longer 'normal'.

Xuanhuo Jian is a supreme artifact whose grade is not inferior to the Zhuxian Ancient Sword, and the Eight Desolation Fire Dragons, which are the soul of the instrument, are usually in a state of being sealed, and basically no spiritual properties are transmitted.

At the same time, the Xuanhuo Jian also houses the soul of the witch Linglong, which leads to the fact that unless Linglong is willing, no one can completely refine the magic weapon of Xuanhuo Jian, because this Xuanhuo Jian was originally a magic weapon refined by Linglong.

Fortunately, Linglong's soul is usually in a deep sleep.

When Mu Twilight had just absorbed the power of the earth fire, he secretly injected a wisp of True Yuan into it to stimulate it, which made it seem that he was born from the magma lake because of his 'fate' with Mu Dui.

With a thought in his mind, Mu Dui unfolded his divine sense like the Xuanhuo Divine Shield, but secretly contacted the True Yuan he had injected earlier.

It is its own true element, and it is naturally easy to drive it.

Therefore, from the perspective of Su Ru and the others, it was as if Mu Dui had already unleashed his divine sense and tried to communicate with Xuanhuojian, and Xuanhuojian immediately responded and flew towards him.

"Great! It seems that this magic weapon is indeed related to Twilight! Su Ru said with a look of joy and relief.

As the 'highest' cultivation among all people, she could also sense the extremely powerful aura that leaked slightly from the Xuanhuo Jian.

It's just that even if she has guessed boldly enough, she thinks that this should be a top-level magic weapon that is not inferior to the Nine Heavens Divine Soldier that has just been born.

But in fact, he still underestimated the power of Xuanhuojian,

How could an ordinary Nine Heavens Divine Soldier make the Divine Sword Tianya faintly feel a touch of fear? It's a pity that Lu Xueqi didn't say anything about it.

"Dusk, this magic weapon is very powerful, especially the power of earth fire is extremely violent, you must slowly and thoroughly refine it before you can take it out and use it, otherwise it will easily backfire on yourself!" Watching Mu Du play with the Xuanhuo Jian in his hand with a happy face, Su Ru couldn't help but remind with a serious face.