In the practice room, Liu Yu sat cross-legged and summarized the gains and losses of this trip.
The main reason for doing this is to obtain the fourth-grade spiritual fire and improve the grade of Qingyang Demonic Fire.
Now that the goal is achieved, even if there are no additional gains, it is considered a complete success.
However, in order to obtain spiritual fire and kill a Nascent Soul Lord, it is naturally impossible to have only one harvest.
In addition to the Nine Nether Demonic Fire, Liu Yu also obtained two real treasures and all of the White Bone Demon's net worth.
Before leaving the Black Bone Sect, I searched the sect's treasure house along the way.
Although there were no surprises, I still obtained a large number of spiritual stones, magic weapons, elixirs, talismans, spiritual herbs and elixirs, etc.
Things like spiritual stone instruments have little effect on Liu Yu today.
However, the Black Bone Sect's hundreds of years of collection has greatly enriched its reserves of spiritual herbs and elixirs.
"Among the spiritual herbs harvested this time, there are even a few important auxiliary herbs for refining the "Huanzhen Pill"."
"If you count these auxiliary herbs and refine the magical herbs for the "Huanzhen Pill", you'll have about seventy-seven or eighty-eight."
"The main medicine "Tianxincao" was found by the dead soldiers, and most of the auxiliary medicines were also collected through the sect. The remaining ones should be collected in a few years."
"You only need to polish your magic power, collect all the spiritual herbs and refine the elixir, and then you can start breaking through to the middle stage of Nascent Soul."
Liu Yu stroked the storage ring, thoughts flashing through her mind, and she felt very good thinking about this place.
In the past fifty years, he certainly has not forgotten the art of alchemy.
Through the practice of ripening a large number of spiritual grasses in the Immortal Mansion, and discussing the alchemy experience with Mo Mei from time to time, his success rate in refining the "Flying Immortal Pill" has reached an astonishing 40 to 50%.
Although he has not yet refined other fourth-level elixirs, Liu Yu's alchemy skills have allowed him to firmly establish himself as a master.
As soon as the "Huan Zhen Dan" spiritual grass is collected, you can start refining it immediately.
The road to immortality became more and more difficult as he progressed. Even though he had extraordinary talents in conceiving a baby using secret techniques, he still inevitably encountered a bottleneck.
Without breaking through the bottleneck, your cultivation level cannot continue to improve.
If he spent time and worked hard for decades or hundreds of years to cultivate, Liu Yu would be very sure of a breakthrough.
But when the news about Lingbao was leaked, it was like a sharp sword hanging over his head, which did not allow him to practice slowly and step by step.
We must improve our strength as soon as possible.
Although the news of the Broken Sword may not be leaked, Liu Yu has no habit of leaving his own safety to an illusory fate!
So as early as when the four elixir recipes were obtained, he began to collect the four elixirs and the necessary spiritual herbs and elixirs at the same time.
After all, he controls a Nascent Soul Sect and has a group of loyal dead soldiers under his command. Now, decades have passed and he has gained a lot.
"It's a pity that in order not to reveal my identity, I have to give up the Black Bone Sect's spiritual veins."
"Otherwise, if you integrate a fourth-order low-grade spiritual vein, the level of Tongtian Peak's spiritual vein will surely increase a lot again, and you will be one step closer to the fourth-order high-grade spiritual vein."
Thinking of the Black Bone Sect's Youyue Mountain spiritual veins, Liu Yu shook his head slightly with regret.
Migrating spiritual veins is not something that can be done in a day or two, and the movement is so loud that it is impossible to hide it.
After weighing the pros and cons, he could only give it up, not knowing which old monster would benefit from it.
"I'm still greedy."
Immediately, Liu Yu laughed at himself and cursed himself for being too greedy.
After getting the Nine Nether Demon Fire, he also got the entire fortune of the Bone Demon, and unexpectedly gained a few important auxiliary medicines for refining the "Huanzhen Pill", but he still didn't know how to be satisfied.
Smiling slightly, Liu Yu turned her eyes and looked at the objects placed in front of her.
They are a bone knife made from unknown bones, a white orb the size of a goose egg, and a ring as black as ink.
It is the Bone Sword Old Demon’s real treasure, the white orb and the storage ring.
"With spatial attributes, this bone knife is quite extraordinary."
"Not only is the attack powerful, it can also play a surprising role at some critical moments."
Picking up the real treasure of the bone knife, Liu Yu looked at it carefully.
The flying speed of the magic weapon is extremely fast, far exceeding the escape speed of the monks, but no matter how fast it is, it cannot move faster than the space.
The true treasure of the bone knife has spatial attributes and can be moved in space and appear anywhere within a certain range.
At critical moments, it can be used as a surprise move.
"It is indeed a good magic weapon for murder and arson."
"In order to refine this treasure, the Bone Demon must have spent a lot of effort."
"But it belongs to Liu now."
Gently touching the bone blade and feeling the uneven texture, Liu Yu found a line of small words on the handle.
"Bone-Breaking Empty Knife"
Not surprisingly, this is the name of this knife.
Liu Yu followed the good deeds and had no intention of renaming him, so he will be called him by this name in the future.
"This knife is rare."
"Although I already have the Sunset Golden Rainbow Spear for attack, I can still use it."
After looking at it for a few times, he put the "White Bone Cracking Knife" aside, intending to keep it and use it himself.
Immediately, Liu Yu picked up the white orb again and found three small words on it - Yinming Pearl.
Logically speaking, defensive treasures should be rarer than offensive treasures.
But in terms of defense, he already has the "Red Flame Shield", which is very consistent with his own attributes.
In terms of quality, the Yin Ming Pearl does not exceed the Red Flame Shield. Since it is a true treasure of Yin attributes, Liu Yu can only exert about 70% of its power after being refined.
It has no rare characteristics, its quality is not as good as the Red Flame Shield, and it is not in harmony with its attributes.
In this case, the Yinming Pearl seems a bit useless.
Liu Yu thought for a while and gave up the idea of sacrifice, intending to save it for future exchange with other true kings.
After all, in terms of defense, he already has a lot of means. Whether it is "Yuxia Armor" or "Red Flame Shield", their defensive power is very good.
Moreover, if one has reached the fourth level of body refining, it is not a problem to resist some fourth level spells.
After thinking about the uses of the two real treasures, Liu Yu began to refine the jet black storage ring. Since the old demon with bones was dead, the sacrifice went very smoothly.
Easily erase the brand of spiritual consciousness, remove the magical aura from it, and then put your own brand on it.
With a thought in his mind, Liu Yu probed into the dark storage ring with some expectation.
However, this look was a huge disappointment.
In addition to a large number of spiritual stones, the most important thing in the Old Bone Demon Storage Ring is the material for refining corpses and ghosts.
For example, corpses, living souls, etc.
The corpses and living souls were all processed and put away neatly, but not many spiritual herbs and materials were seen.
"With such a net worth, not only compared to myself, but even compared to ordinary early True Lords, it is not as good as it is."
After reading it, Liu Yu was a little disappointed.
He has no intention of studying the corpse path anymore. With the rapid growth of his strength, even the "Ten Thousand Soul Banner" has been useless for a long time.
Therefore, a large number of corpses in the storage ring had souls, and it was a pity for him to discard them if they were tasteless.
"Leave it to Qiu Shui."
Thinking about it, Liu Yu quickly thought of how to deal with the souls of these corpses.
He can probably guess why the old demon is so poor.
In order to break through to the middle stage, a large amount of resources must be consumed, and coupled with the need to increase the combat power of the Bone Snake Corpse Refiner, I am afraid that most of this person's net worth has been emptied.
As a result, there will naturally not be many good things left.
After counting the loot, Liu Yu did not rush to practice the "Bone-Splitting Sky Knife", but put away the three items one by one.
Then, the storage ring's spiritual light flashed, and a jade box made of thousand-year-old black ice instantly appeared in front of him.
"Click"
After tearing off the sealing talisman, the jade box opened with a soft sound.
A faint blue flame remained motionless in the jade box. It beat slightly for a long time and was in a sealed state.
It is the Nine Nether Demonic Fire!
"With the disciples of the sect and the dead men under them, collecting the flesh and blood of monsters is not a problem."
"Once Qingyang Demonic Fire is promoted to the fourth level, it will be able to obtain a large amount of fuel to increase its power."
"By then, the power will be extremely impressive, so the faster the promotion, the better."
With all kinds of thoughts flashing around, Liu Yu fired a burst of magic power and controlled the blue flame to float in front of him.
Without the suppression of the spirit-sealing talisman, as soon as it left the Xuanbing Jade Box, the Nine Nether Demon Fire accelerated its beating speed, emitting high temperature and slowly reviving.
"Zizi~"
You can clearly feel that it is becoming active.
Without further ado, everything was ready, and Liu Yu immediately started to promote the Demon Fire.
He held the magic formula firmly with both hands, and immediately fired out dozens of magic formulas, falling into the blue flames one after another.
"boom!!!"
In an instant, an extremely powerful force naturally emitted from the blue flame the size of an adult's head.
This level of power clearly exceeds that of many true treasures, easily reaches the fourth level, and is comparable to some true kings.
As if being stimulated by something, the Nine Nether Demon flames became brighter and brighter, and beat more frequently.
In the space, the fire-attribute aura that permeated everywhere began to become active.
As the creator of the secret technique, Liu Yu is naturally extremely familiar with the "Nine Transformations of Demonic Fire".
Immediately, take the first step in an orderly manner, and hit out the magic formula one after another without any hurry.
As the spells were fired one after another, the stimulation of the Nine Nether Demonic Fire became stronger and stronger, and its power slowly climbed upwards, reaching a level that was intimidating to low-level monks.
At the same time, wisps of extremely pure milky white spiritual power also spilled out from the flame the size of an adult's head.
These strands of spiritual power may seem small, but in fact their "quality" is very high.
Similar to the mana in the Nascent Soul stage, it is similar to the mana in the Qi refining stage.
The total amount of spiritual energy contained in a ray of mana in the former may far exceed the sum of all the mana in the latter.
Without the restraint and control of the spiritual fire, the hair-like milky white spiritual power directly changed from order to disorder.
As soon as it appears, it changes from high quality to low quality.
"Rumble"
In a short period of time, a storm of spiritual energy appeared in the practice room, sweeping through every corner.
Soon, atomization occurred naturally.
The hair-like milky white spiritual power turned into a massive amount of heaven and earth spiritual energy, making the spiritual energy storm intensify.
Seeing this, Liu Yu took out the cave token and immediately activated the spirit gathering array.
"Buzz~"
On the ground, arrays of formations lit up rapidly, absorbing the mist of spiritual energy that filled the space.
This prevents the spiritual energy storm from continuing to expand.
However, because the Nine Nether Demon Fire is still releasing spiritual power, the spiritual energy storm has no intention of dissipating in a short period of time.
In order to force out the source of spiritual fire, it is natural to release most of its spiritual power so that its power is weakened to the minimum.
Having already performed the "Nine Transformations of Demonic Fire" secret technique three times, Liu Yu was very familiar with the entire process and was not surprised at all when seeing this scene.
From time to time, he would cast a spell and watch quietly as the power of the Nine Nether Demonic Fire increased, and it continued to release massive amounts of spiritual energy.
The fourth to sixth levels of spiritual fire correspond to the early stage of Yuanying to the late stage of Yuanying.
However, due to the special nature of spiritual fire, even fourth-grade spiritual fire may pose a threat to the great monks.
The degree of rarity far exceeds that of ordinary real treasures.
The spiritual energy contained in this high-level spiritual fire can already be described as massive.
Releasing in such a "gentle" way won't end in a day or two at all.
Under the effect of the "Nine Transformations of Demonic Fire", strands of milky white spiritual power continuously overflowed from the Nine Nether Demonic Fire, turning into a massive amount of low-quality spiritual energy.
The spiritual energy naturally atomized, forming a large-scale spiritual energy storm, but under the influence of the spirit gathering array, it could never continue to expand.
Time passed by minute by second, and after about seven days and seven nights, the power of the Nine Nether Demonic Fire reached its peak.
Immediately, it began to slowly decline.
As the seven days passed, the milky white spiritual power that overflowed from it gradually became scarcer, and the scale of the spiritual energy storm slowly decreased.
It was not until half a month later that the power of the Nine Nether Demon Fire declined to the extreme, and it took a long time for a high-quality milky white spiritual power to float out.
"about there."
Liu Yu flashed this idea and immediately turned his left palm.
"Pfft~"
The next moment, a dark green flame emerged from his palm.
Dark cyan, light cyan, light red, pure white
In just a short moment, the colors of Qingyang Demonic Fire changed one after another, representing all the characteristics it currently possesses.
He grew to the peak of the third level and swallowed three spiritual fires. This fire already has three characteristics.
They are: the "affinity of plants and trees" of the Green Lotus Spiritual Fire, the "burning of flesh and blood" of the Mandala Blood Flame, and the "power of desire" of the Impermanent Heart Flame.
Controlling the Qingyang Demonic Fire, it slowly floated close to the Nine Nether Demonic Fire. The two spiritual fires were less than one foot apart.
"disease"
Seeing that the time had come, Liu Yu used both hands to perform the magic formula faster and faster, and even afterimages appeared.
Hundreds of magic formulas condensed into a three-inch red magic seal.
As he pointed out, the red seal instantly fell into the blue flames, and its power was so weakened that the Nine Nether Demonic Fire was unable to resist it.
"Zi Zi"
Although the blue flames surged violently, their power did not increase at all due to insufficient spiritual power.
Instead, as red seals entered one after another, its shape began to become a little unstable.
Finally, after the ninth red seal fell, a very special blue light floated out from the Nine Nether Demonic Fire.
The origin of spiritual fire!
This faint blue aura is extremely special. As soon as the fire attribute aura appears in the space, it spontaneously gathers towards it.
If you continue to absorb spiritual energy, based on this little spiritual light, you may not be able to become another "Nine Nether Demonic Fire" over time.
But due to insufficient origin, the grade may only be first or second grade.
Under Liu Yu's control, this faint blue spiritual light slowly floated into the cyan flame next to it.
Immediately, he used the "Nine Transformations of Demonic Fire" to assist Qingyang Demonic Fire in absorbing and digesting this source.
"Zi Zi"
After absorbing a little bit of blue spiritual light, fist-sized dark green flames surged violently visible to the naked eye.
The body showed signs of instability, and its essence began to change.
However, under Liu Yu's control, there will naturally be no accidents.
One breath, two breaths, three breaths
After about three hours, this spiritual light was perfectly absorbed.
The Qingyang Demonic Fire, which had already reached the peak of the third level, obtained the origin of the fourth level spiritual fire and began to advance towards the fourth level.
Visible to the naked eye, the spiritual light that was originally dark green began to become a little bit blue.
If the first refining is successful, the rest will naturally fall into place.
Under the observation of Liu Yu's keen spiritual consciousness, it was impossible for any mistakes to occur.
However, the Nine Nether Demon Fire, which lacks spiritual power and has lost part of its origin, is even more powerless to resist Liu Yu's control.
I can only let myself be slaughtered and become weaker step by step.
…
Seven days later.
"Bang~!"
The Nine Nether Demonic Fire, which had lost most of its origin and had weakened to the extreme, could no longer maintain its form.
It exploded with a bang and turned into dots of blue flames.
Even though the spiritual energy in the training room was extremely abundant, the little blue flames could not stop being extinguished one after another in the next few breaths.
In the end, this Nine Nether Demon Fire completely dissipated between heaven and earth.
Perhaps due to the restrictions of the Dao rules, it is impossible for two identical fourth-grade spiritual fires to appear in the world at the same time.
Only when the old spiritual fire dissipates can a new spiritual fire be born.
Perhaps by chance, after tens, hundreds or even thousands of years, a new Nine Nether Demonic Fire will be born.
It's just a newly born spiritual fire that is no longer the same one as before.
However, the sound of burning flames in the training room did not disappear with the disappearance of the Nine Nether Demon Fire.
"Zizi~"
Next to the Nine Nether Demon Fire before it dissipated, a dark blue flame the size of a fist was beating and burning slowly.
Blue fire light shines in all directions, this spiritual fire is as powerful as a rainbow, and it has truly reached the fourth level.
Compared to the Nine Nether Demonic Fire in its heyday, its power is not overstated, and there is still a lot of room for improvement after being promoted.
It is the Qingyang Demonic Fire that has reached the fourth level!
"Fourth grade."
Looking at the dark blue flames, a smile appeared on Liu Yu's face.
Through the close connection mentally and physically, he was now very sure that the Qingyang Demonic Fire had reached the fourth level.
And because of the tailor-made "Nine Transformations of Demonic Fire", I can continue to be promoted in the future.
Liu Yu waved her hand gently, and the Qingyang Demonic Fire moved and returned to the palm of her hand to beat and burn.
The spiritual sense spread out, and he could clearly feel that under the influence of the Qingyang Demonic Fire at this time, the surrounding fire attribute aura became much more active.
"Judging from the activity of fire-attributed spiritual energy, Qingyang Demonic Fire is still slightly less influential than Jiuyou Demonic Fire."
"However, there is not much difference."
"Due to the accumulation of the first three transformations, the Nine Transformations of Demonic Fire will make great progress in the fourth transformation, and can more fully inherit the characteristics of the original spiritual fire."
"In terms of affecting the fire attribute aura, it should be able to have 90% of the effect of the Nine Nether Demon Fire, which is already a great improvement."
After observing for a while, Liu Yu came to a conclusion and nodded lightly with satisfaction.
"This characteristic that can increase the activity of surrounding fire-attributed spiritual energy will be called "flame improvement" from now on."
"Family with vegetation, burning flesh and blood, power of desire, flame enhancement."
"Not bad."
After giving the characteristics a simple name, Liu Yu's eyes brightened and he was in a good mood when he looked at the promoted Qingyang Demon Fire.
As for the "flame boost" feature, it doesn't matter why the color is not blue.
After all, Qingyang Demonic Fire is not a complete replica of Jiuyou Demonic Fire, and it does not inherit all its characteristics.
Immediately, he had a thought.
The next moment, the Qingyang Demonic Fire blurred, and its color changed between dark green, light green, light red, pure white, and dark blue, and even five colors appeared at the same time.
After promotion, the Qingyang Demonic Fire transformed into various forms under the control of Liu Yu, experimenting with many changes after the fourth level.
At this moment, there was sudden movement from the storage ring.