Lu Kun worked hard and endured great pain, and spent a year carving the spirit control magic circle on the bones, in order to enhance the control of mana, to be able to compress mana more easily, and to make mana crystallization easier.

The cave where he is located is the strongest place in the spiritual energy of the Demon Spirit Island, and there are spirit gathering arrays inside and outside to gather the spiritual energy, and the spiritual energy is completely comparable to the central area of the Demon Island back then.

Such a strong aura can help traditional immortal cultivators increase the chance of crystallization mana and condensation of golden pills, which also has a great effect on the physical cultivation of Lu Kun.

Under the operation of Lu Kun's refining body, the surrounding rich aura quickly submerged into his bone thunder seal, transforming into bone mana, and this newly generated mana was in the bones.

This is one of the benefits of the thunder seal to re-condense and change positions, the mana that appears directly in the bones can accelerate the condensation process of mana and save a lot of energy.

If you want to crystallize mana, you must first condense mana, and for traditional monks, concentrating mana will consume a lot of mana, so you must always maintain a state of cultivation.

In this process, the newly transformed mana is greater than the mana consumed by condensation, so the outside world is full of spiritual energy, and it will be more relaxed.

Of course, the condensed mana is not in place in one step, but a small part of the mana is condensed first, and all the mana slowly reaches a new density, and at that time, the mana is likely to crystallize.

Lu Kun, as a body cultivator, is still similar to a traditional monk.

However, the process of crystallization of his mana compared to traditional immortal cultivators has advantages and disadvantages.

The advantage is that the position where he concentrates mana is the bone rather than the dantian, this is a mana container as strong as a top-level magic weapon, no matter how rough the mana is stuffed into it, there will be no cracks, let alone damage.

Dramatically sped up.

The disadvantage is that Lu Kun's powerful mana is twice that of the ordinary foundation building Great Perfection, and the total amount of mana is more, so it will take more time to condense it, and the difficulty of crystallization will be higher.

However, the advantages and disadvantages complement each other, and the final time spent is really uncertain.

Under his control, the mana of Lu Kun's whole body converged into the bones, and the newly generated mana appeared in the bones at the same time, and under the pressure of the spirit control array, the mana density inside the bones was slowly increasing.

Of course, the bones do not completely enclose the mana, and in the process of condensing, in addition to the lost mana, a large amount of mana also bounces back from the bones and disperses back to other parts of the body.

Lu Kun didn't care about this, his purpose at this stage was just crystallization, and he was not in a hurry to press all the mana into the bones.

In addition to the soul control circle on the bones, a body of vigorous blood also has a huge help in the concentration of mana.

This role is handling.

Under Lu Kun's perfect refining effect, the blood circulating throughout the body can assist the spirit control magic circle, absorbing a large amount of mana that rebounds from the bones and transporting it back into the bones.

For Lu Kun, who has a strong heart, changing the speed and direction of blood flow is a breeze.

With so many advantageous conditions, Lu Kun had no doubt that his mana could be crystallized, it was nothing more than a waste of time.

In this way, time passed slowly in Lu Kun's condensed mana.

One year ......

Two years......

In the third year of Lu Kun's retreat, Pan Yan, who had worked hard outside to build the artificial lake on Demon Spirit Island, had finally reached the final stage.

This body cultivator of the thick earth body stood in a large pit in the outer area of the island, the diameter of this pit was about two hundred zhang, and Pan Yan's very strong figure was very small for the big pit.

Connected to the circular pit are two channels several zhang deep and ten zhang wide, which connect towards the central area of the Demon Spirit Island, and the width gradually decreases.

When it reached the vicinity of several peaks in the central area, it also branched out and led to the top of the peaks, and then only Zhu Xiaofeng needed to arrange some water attribute magic arrays on the top of the major peaks.

Such a large man-made river and lake were slowly shaped by Pan Yan's daily practice of earth attribute spells over the past three years.

"If you make this artificial lake a little deeper today, you can really put it to an end. Pan Yan, who was standing in the middle of the pit, muttered.

"Although it took a little longer, it was not as tired as I imagined. ”

Just as he was speaking, a small silver figure appeared at his feet, it was an extremely fat silkworm, it was the silver silkworm Gu worm.

This little guy had a very happy life in the Demon Spirit Island, in the past, when it was outside, it only dared to sleep in the depths of the underground and slowly cultivate, just like now, it can run around wantonly.

Although the size of this island is limited, it is already huge for this little guy.

"Little Yinzi, why are you interested in coming to me, by the way, it's time to get poison again. "Pan Yan signed a contract with this silver silkworm Gu worm and took a random name.

"Hiss. ”

The two big eyes on the fat silkworm's head flickered, and the small mouth below seemed to be slightly upturned.

"Hey, you're still ......"

Before Pan Yan could finish speaking, the fat silkworm stabbed downward, as if it was not solid soil underneath, but water, allowing it to insert it easily.

Pan Yan shook his head helplessly, the yellow light on his body flashed slightly, followed closely behind, and disappeared into the dirt.

Such a scene has happened countless times over the years, and this silver silkworm Gu worm will play a chase battle with Pan Yan every time when he is taking poison.

The last few times, the little silkworm has been caught very quickly, Pan Yan has been practicing earth attribute spells all these years, coupled with his thick earth body, the earth spells have become more skillful.

However, this time, the little silkworm had already been prepared, and the first few times, it found that Pan Yan was moving laterally in the soil much faster than it, but when it came to drilling down, it was much slower.

So the little guy kept drilling down this time very cleverly, and in its thoughts, as long as Pan Yan spent more than half an hour catching it, it would have been successful.

After drilling down for a hundred zhang, the little silkworm felt the fluctuation of the earth-attribute mana above, and knew that it was right, Pan Yan's big man was not much faster than it.

The excitement in the eyes of the little silkworm became stronger and stronger, and its fat body writhed, and it drilled down vigorously.

"Dang!"

But just when the little one was excited, it suddenly hit something extremely hard, and suddenly stopped its dive, and the impact made the little one a little dazed and dizzy.

"Hey, what is this?"

After a while, Pan Yan's yellow light came to the side of the little silkworm, he first grabbed the fat silkworm that was still dizzy, put it into the spirit beast bag, and then used his divine sense to probe forward.

Exposed to his consciousness was a silver curtain of light, and bursts of palpitating breath rushed to his face.

"Silver Forbidden, you can't detect it with your divine sense if it's far away, and the aura is very similar to the one that surrounds the island. ”

Pan Yan, who was muttering in his mouth, clenched his fist with his hand again, and knocked down a few times hard, but the forbidden light curtain did not move at all.

"Also, there is a prohibition hanging over the island, how can there be no one in the depths of the earth. Then Pan Yan shook his head, the yellow mangs on his body flashed, and he ran the earth escape technique and fled upward.

He would take the poison first, and then make the artificial lake a little deeper, and soon forgot about the ban.