Looking at the more than a dozen elixirs that had been matured to 10,000 years of medicinal age and could no longer continue to grow, Xia Yin couldn't help but smile bitterly.

"I was so careless that I left the mysterious shoots in the medicine garden for a whole year!"

Quickly collecting more than a dozen 10,000-year-old elixirs, Xia Yin originally wanted to transplant the mysterious shoots into the middle of more than a dozen elixirs and continue to ripen them, but after thinking about it for a while, he still stopped this thought.

Next, he still has to refine the Heavenly Fire Bead for a long time, and he has no time to take care of the medicine garden, especially the mysterious sprout is the biggest secret in his body, and he must not make the slightest mistake, he must act cautiously.

When you have refined the Natal Flying Sword and are ready to retreat and cultivate, you will only need the elixir that you need to take the time to mature, and now you must not leave the mysterious sprouts alone in the medicine garden......

Turning the mysterious shoots into a storage ring, Xia Yin walked out of the medicine garden, returned to the middle of the secret room, sat down cross-legged, and meditated and practiced without saying a word, in order to recover from the fatigue of the year......

The Five Qi Gui Yuan Gong and the Tianyan Five Elements Sword Technique quietly operated and entered a state of cultivation.

However, a moment later, Xia Yin opened his eyes with a look of doubt on his face.

"I've been running around for decades and haven't noticed this detail!"

Xia Yin muttered to himself.

It turned out that when he was just cultivating, under the guidance of the Five Qi Guiyuan Gong, the mana continued to move in the body according to the complex circuits, and part of the mana automatically merged into the five internal organs, constantly refining these organs.

Almost half of the mana automatically merged into a hidden meridian in the big spine, constantly breaking away this hidden meridian.

Since the beginning of cultivating the Five Qi Returning Yuan Gong, this phenomenon of most of the mana being automatically consumed in the impact hidden meridians has always existed.

Now there is a clear vein between the dantian qi sea and the big spine, which is connected with the hidden meridians in the big spine......

For decades, this occluded meridian hidden in the large spine has been washed away by more than ten inches unconsciously, and it is about to reach the waist!

Xia Yin didn't know what this meridian was called and what it did, and he had never been willing to waste mana to impact this meridian, but once the Five Qi Guiyuan Gong was operational, half of the mana would automatically rush to this meridian, and he couldn't control it at all.

And Xia Yin had such a guess from the beginning - the big spine runs through the body, and since this meridian is hidden in it, it should also follow the spine and go directly to the brain soul knowledge sea, and it may even be a hidden bridge between the dantian qi sea and the soul knowledge sea.

It's just that this meridian is hidden and occluded, and ordinary monks can't open it in their lifetime, and there is no way to open it, and maybe even most monks don't know the existence of this hidden meridian at all.

And the Five Qi Returning Yuan Gong obviously has the effect of opening up the mysterious meridians.

Xia Yin even suspected for a while that the so-called "Five Qi Returning to the Yuan" should refer to the process of attributing the five elements of mana in the dantian qi sea to this meridian and forcibly opening it up.

Now, the lowest part of the spine has been opened up and connected to the dantian qi sea, but there are still most of the hidden meridians in the large spine, which are still occluded.

For a long time, Xia Yin was very sad that half of the mana he had cultivated was all wasted on his internal organs and this hidden meridian!

If it weren't for the fact that the internal organs and meridians consumed a lot of mana, the speed of one's cultivation would be even more incredible......

And there's an even bigger puzzle that has been hanging in the air for decades.

When Qin Guanhai gave him the Tianyan Five Elements Sword Technique, the jade slip that recorded the Tianyan Five Elements Sword Technique suddenly shattered and disappeared, but the sword technique technique appeared strangely on the broken book that recorded the Five Qi Returning Yuan Gong.

Obviously, there is some unknown connection between the Tianyan Five Elements Sword Technique and the Five Qi Guiyuan Gong, and the biggest possibility is that the Sword Technique and the Five Qi Guiyuan Gong were created by the same person, and they are supporting exercises.

It's a pity that for decades, so much has happened, and I have been exhausted, and I don't have time to explore this secret......

"Well, it seems that there is a chance, I have to ask the master about the origin of the Tianyan Five Elements Sword Technique, he said that it was obtained in a certain ancient ruin, if you find this ancient ruin, maybe you can uncover the connection between the Five Qi Guiyuan Gong and the Tianyan Five Elements Sword Technique!"

After thinking about it secretly, Xia Yin put this problem aside for the time being, and continued to operate the two main cultivation methods of the Five Qi Guiyuan Gong and the Tianyan Five Elements Sword Technique.

Most of the mana was still surging towards the hidden large spine, constantly impacting this closed meridian.

However, the meridians were as if steel was cast into iron.

For this scene, Xia Yin was not the slightest surprised.

The stability of this meridian is simply incredible, and his own powerful mana has only broken away for more than a dozen inches in the past few decades, and its stability can be seen, and the meridian is not felt to be washed away in a short period of time.

Xia Yin understood that this was an extremely long water mill work, and he couldn't rush it.

And after the pulse is opened, it is not certain whether it is a blessing or a curse......

Three days later, the energetic Xia Yin sacrificed out of the soul chamber again, enveloping himself, and his spiritual power merged into the firebird.

Shout!

The firebird flapped its wings and flew towards the Heavenly Fire Bead with a crack on its surface, and pecked it again.

This mouthful of devouring heavenly fire was five times thicker than a hair, but it was still only a thin thread.

Because of the fusion of a trace of heavenly fire, the firebird now has the attribute of heavenly fire, and is no longer afraid of the terrifying fire element power it contains, but Xia Yin's physical body still can't withstand the invasion of the multi-day fire elemental power, and he still doesn't dare to devour too much at once.

However, Xia Yin was very confident that when the entire Heavenly Fire Bead was completely refined, whether it was the Firebird or himself, he would no longer be afraid of the Heavenly Fire Bead.

In the soul room, it fell into silence again, and the fusion of the Heavenly Fire Bead continued......

......

Xingzhou is still moving forward in the vast and boundless heaven, except for the monks who are responsible for rotating the replenishment of spirit stones for the formation eye, and the formation mage who is responsible for the operation of the formation, the other monks are all in retreat and cultivation.

The unknown and potential dangers of the road ahead make everyone redouble their diligence in cultivating.

As time passed, there were monks who made major breakthroughs and advanced to the next realm.

In the blink of an eye, ten years have passed......

In the soul room, a mini firebird hovered and flew in the air, chirping happily in its mouth, and from time to time it gently pecked at its owner with its sharp beak, which seemed to be very smart.

Today's firebird, from the original half-red and half-hundred, has become a whole pink, which looks extraordinarily gorgeous, but it is very different from the original white Yuehua Jinyan, and there is no resemblance to it.

Xia Yin, who was smiling, could not hide his relief on his tired face.

After a full eleven years, he finally fused an entire Heavenly Fire Bead with his natal soul fire.

Eleven years, for a person who cultivates in retreat, is almost a snap of a finger, not a long time.

And in the past eleven years, except for refining the Heavenly Fire Bead, Xia Yin has not stopped cultivating.

Six kinds of ancient pills, a total of hundreds of bottles of the two attributes of gold and wood, were eaten by Xia Yin every day as fried beans, and the other three pills were also swallowed into the belly by the leper dog, but the thin body did not change in the slightest.

But in Xia Yin's body, the anti-heaven effect of these pills was revealed......

The mana of the two attributes of Jinmu has risen from the middle stage of Jindan to the peak realm of the late stage of Jindan, and it is only one step away from being able to rush to the Great Perfection of Jindan.

As for the earth attribute mana, it is still in the early stage of Jindan.

This is because Xia Yin put most of his energy on fusing the heavenly fire, and his cultivation is only incidental, and he specializes in cultivating the two attribute mana of gold and wood, and does not take the earth attribute pill to cultivate.

Originally, with Xia Yin's spiritual power and the Soul Splitting Technique, it was completely possible to cultivate the five elements together, but the fusion of heavenly fire could not tolerate the slightest mistake, so Xia Yin had to focus most of his energy on it.

Eleven years of hard work have finally come to an end!

Next, it is time to look forward to refining the fire attribute natal flying sword.

Xia Yin looked at the other end of the soul room, more than a hundred heavenly fire beads gathered in a suspended air, the mana in his body was running, his right hand was slightly raised, and more than a dozen beads slowly flew in and fell into his hand.

Now the terrifying fire element power contained in these Heavenly Fire Beads no longer poses the slightest threat to themselves, because in their bodies, there is a Heavenly Fire with the same root and origin as them.

More than a dozen heavenly fire beads like blood-colored agate were soft to the touch, and at the moment when Xia Yin pinched them slightly, they were also extremely elastically deformed.

These days, the fire beads are not hard, they are the kind of gelatinous that is somewhere between solid and liquid, and it feels extremely comfortable to hold in the hand.

However, with a slight sweep of his spiritual power, Xia Yin could sense the terrifying scorching aura contained in it, as if it was about to erupt a giant volcano, which was terrifying!

"Well, I have to rest for a few days, and after I recover to my peak state, I will start refining the fire attribute flying sword!"

Xia Yin secretly planned in his heart.

There are a total of one hundred and fifty-eight Heavenly Fire Beads, each of which is just enough to refine a Natal Flying Sword, which means that he only needs to spend one hundred and twenty-five, and there are thirty-three left, which can be kept, maybe there will be other wonderful uses in the future!

Once the fire attribute natal flying sword is successfully refined, he already has four attribute natal flying swords, only the earth attribute flying sword is missing, and he can gather the five elements, and he can try to cultivate the five elements sword formation!

That's the most exciting thing!

Thinking of this, Xia Yin couldn't help but smile bitterly: "Other people's major exercises and supernatural powers are all used as a killer means to save their lives, either with strong attack power, or against the sky with defensive power, and the Tianyan Five Elements Sword Technique that I majored in has not exerted the slightest power until now, killing the enemy and saving my life, all relying on various non-major supernatural powers, which can be regarded as a precedent in the world of cultivating immortals!"

However, Xia Yin was not discouraged by this.

The more difficult it is to cultivate, the more powerful it will naturally be.

It has taken him decades, spent endless wealth and top-grade materials, and I believe that after gathering the Five Elements Flying Sword, this set of sword skills and sword formations will definitely not let me down......

Next, Xia Yin did not cultivate immediately, but gently threw the Heavenly Fire Bead in his hand into the air, gathered with other Heavenly Fire Beads, and suspended quietly, and then with a stroke of his wrist, a broken mountain peak flew out of the storage ring.