In terms of knotting, Yu Fei is actually all different, the pill of gods and demons was developed later, he is different from the five elements of the pill, the five elements of the pill is to transform spiritual power into a single attribute, but the pill of gods and demons is a combination of spiritual power and magic power, whether it is spiritual power or magic power, it is not a single attribute, but the most basic energy, magic power is just a variant, just like demon power, it is the category of spiritual power, and you can cast five element spells through exercises and martial arts.

Therefore, the Pill of Gods and Demons does not have the limitations of the later stage, but it has the strength of the early stage, so the undead clan especially likes to tie the Pill of Gods and Demons, but most people fail, the more ordinary the way to form the pill, the higher the success rate, the more complex the failure rate, once it fails, it is basically impossible to completely repair it.

Therefore, Yu Fei is also apprehensive, so he has specially prepared so much, after all, he is not even the Pill of Gods and Demons, it is the unheard of Pill of Spiritual Darkness, what will happen, he doesn't know, now he is like the monk who tried the Fire Spirit Pill for the first time tens of billions of years ago, excited, expectant and uneasy.

Through the special token, Yu Fei entered the Danyuan Secret Realm, which is a place specially given by Senluo Academy to its own monks to form Dan, and it is also famous in the Ethereal Star because of his particularity.

One of them is that the aura is particularly strong, and a large amount of spiritual power of heaven and earth will be absorbed in the process of knotting, if the surrounding spiritual power is not enough, the knot may fail, not to mention, even if it is a fluke success, the foundation is also very shallow, and it takes time to make up for it, and the Dan Yuan secret realm is full of spiritual power, there are no two problems, after the knot Dan is blessed by heaven and earth, a large amount of aura pours into the body, and directly stabilizes the foundation.

And the other is that the Dan Yuan cheats are divided into many areas, and different areas have different attributes of spiritual power, not only including the five elements and light and darkness, etc., but also the demonic energy, the demon energy, these are also readily available, and more intimately, there is also a mixed area.

Even Yu Fei had to sigh, it was worthy of the secret realm created by the first force of the Ethereal Star, and sure enough, there were some doorways, and 2000 contribution points were still worth it, but Yu Fei won the top three in the academy, which was considered a prostitute~

Yu Fei walked according to the road map, came to the place where the aura and demonic energy were mixed, and found a secluded place to hide, although there are regulations, if there are people in the Dan Yuan Secret Territory, it is forbidden to interfere with each other, and it is even more forbidden to fight, but people are creatures, how can they be 100% obedient?

Not only did he want to be secluded, Yu Fei also took out the ten formations that had been prepared, and laid them all out, as for why they needed so much, the others were generally three or five.

Without him, Hao also, not bad money.

After everything was ready, Yu Fei thought about it for a while, and really didn't miss anything, so he sat down cross-legged and began to tie the knot.

With Yu Fei's mind running exercises, the spiritual power and dark energy in the dantian began to accelerate and rotate, faster and faster, and under the action of the force, they continued to converge towards the center point, forming a round ball, but at this time it was still in a liquid state, and it was still far from the knot.

And then it was time to fight luck and perseverance, and through the continuous compression of the liquid sphere, the final formation of a round and full solid sphere was a success, but it was this process that stumped many ordinary monks.

Yu Fei runs the magic power, continuously absorbing spiritual power and demonic qi from the outside world into the body, in which the demonic energy is swallowed by dark energy, and acts together with spiritual power from the outside, enhancing squeezing, forcing the center point of the ball to change and form a solid state.

A few hours have passed in the blink of an eye, and Yu Fei can't help but be anxious, according to the experience of his predecessors, generally after a few hours of compression, the center point of the sphere will become a solid state under the huge compressive force, and then a collapse event will occur, and the entire liquid sphere will quickly shrink and condense into a solid state.

However, the current Yu Fei didn't feel that the center point had any possibility of condensing into a solid state, and then he suddenly thought that when he was in the Void Realm, he heard the Void Clan say that dark matter is highly stable, does that mean that dark energy is more stable than spiritual power, and it is difficult to change?

Yu Fei had a headache, his center point happened to be full of dark energy, and the aura was wrapped outside, and the current situation was that the liquid spiritual power on the periphery was squeezing the dark attribute spiritual power inside, and it was probably not a simple matter to make the dark attribute aura change into a solid state.

Yu Fei was patient, constantly absorbing the aura and demonic energy from the outside world, sending it into the dantian, and participating in the extrusion process, but the speed of absorption was too slow, when would this progress become a dan, and the monk's breakthrough was a big deal, especially the knot, it was impossible to tie the pill for a year, so the opportunity to tie the pill would disappear, the rules of heaven and earth would judge the failure, and the next time the knot would be even more difficult.

Coupled with Yu Fei's particularity, he even suspected that if it became more difficult next time, and he needed to accumulate more energy to impact, he could only expand the meridians, but that would also increase the difficulty.

If it is said that gathering and compressing the spiritual power in the dantian is called gathering the water of a lake, then gathering the meridian spiritual power and compressing it is gathering an ocean, which is much more difficult.

You can only take an emergency plan, too long will only increase the chance of failure, Yu Fei took the next Aiki Pill, and the aura in his body skyrocketed in an instant, gathering in the dantian to join the squeezing queue, Yu Fei looked at the majestic aura brought by the Aiki Pill, and sighed No wonder the Jie Dan has to prepare the spiritual power pill, it is simply the rescue king at the critical moment, and the absorption of spiritual power from the outside world is not broken at all, it is too slow.

Yu Fei Aiqi Pill ate one by one, and the spiritual energy in his body became more and more, forming a huge vortex in the dantian, but the dark energy in the center was still not solidified, but caused other troubles, that is, the balance between spiritual power and dark energy was broken, which was no longer in line with the foundation of the dual cultivation of gods and demons.

However, this was also expected by Yu Fei, and he had to rejoice that he grabbed a few "Dark Flowers" in the Void Realm, and after using up a few plants, there were still two left on his body.

Yu Fei took it out and took a look, this time it was really unsuccessful and became a benevolent, he still remembered the consequences of "ingesting" the dark flower for the first time, and almost died, and the next time he took it because of the exhaustion of spiritual power, he was also shocked by the majestic dark energy contained in the dark flower, and he almost didn't die, after all, this was originally the treasure flower used by the Void Clan to form a pill.

This is also Yu Fei's biggest hole card, dare to take the road of spiritual and dark double cultivation, because there are two treasure flowers in his hand that the Void Clan uses to form Dan, since the Void Clan can rely on it to form Dan, then his own dark energy should also rely on it to solidify it.

Yu Fei took a deep breath and took the dark flower in one mouth, and in an instant, an incomparably majestic dark energy swept through his body, flowing through the meridians of his body, and rushed to the dantian under the guidance of Yu Fei.

This is a new force, extremely fierce, under the attraction of the dark energy ball in the center of the dantian, the ferocious pounce, and the aura in the dantian to form a vortex mixed with the spirit and darkness, filling the entire dantian, close to the center of the place was quickly compressed and liquefied, and further squeezed to the center point, Yu Fei continued to calculate the size of the dark energy, from time to time to throw a aiki pill into his mouth, in order to maintain the relative balance of the two energies, but also to further increase the energy of the squeezing army.

After eating the Aiki Pill, he began to throw the Qingyuan Pill, just like eating candy, ordinary monks failed to eat four or five pills, but Yu Fei and the Aiki Pill had already eaten more than a dozen pills, and finally let the spiritual power and dark energy reach a new balance.

At this time, Yu Fei could no longer see the center clearly, the dantian was full of mixed aura and dark energy, and the new ones were constantly liquefied, and the liquefied ones were squeezed towards the center point under the action of the vortex.

Yu Fei kept praying, hurry up, hurry up, if this wave of energy is exhausted and has not yet ended, he can only eat another dark flower, Yu Fei suspects that he will definitely die!

Maybe the prayer had an effect, or maybe it was the god of luck who finally favored Yu Fei once, a strange feeling came to his heart, Yu Fei sensed the center of the dantian vortex, a little light lit up, and then the dark energy in the center became solid, although it was only a point!

Then, as if the expanding star began to collapse, all the spiritual power and dark energy in the dantian began to rotate at great speed and collapse to the center point, ten seconds later, a round spirit pill was formed, gold and black were divided in half, but it was not the shape of Taiji as Yu Fei imagined, but the pattern of gold and black distribution alternately.

But it's acceptable to think about it, after all, the relationship between spiritual power and dark energy is not light and dark, the two are not hostile, just two different attributes of energy, and there is no need to do any tai chi.

Yu Fei looked at the last dark flower in the storage ring, and sighed that it was worthy of being the treasure of the Void Clan's knot pill, if it didn't have it, it would be difficult to get the knot pill smoothly

As soon as the elixir is completed, heaven and earth begin to bless, in fact, this is the beautification of cultivators, saying that when the knot pill collapses, all the spiritual power in the body is emptied, and the body at this time urgently needs to replenish the aura, and secondly, the new dan is also very greedy, and wants to absorb more aura to stabilize himself, so as not to suddenly shatter.

The second is the flow law of Reiki, which is very similar to air, when the air in a place suddenly disappears, under the action of pressure, the surrounding air will flow there. And when the pill is knotted, not only does it drain the spiritual power in the body, but it also frantically absorbs the spiritual energy around the body, and after drinking and pecking, the nearby heaven and earth spiritual energy begins to frantically converge with Yu Fei, and is frantically absorbed by the newly born new pill.

This scene is as if heaven and earth are blessing and rewarding the newly promoted Yudan monk, and over time, it is said that heaven and earth have blessed it.

Now Yu Fei is enjoying this stage frantically, and the feeling of the surrounding aura constantly pouring into his body is really amazing, and the new pill in the dantian is still maintaining a rapid rotation, greedily sucking.

And Yu Fei just happened to have a relatively stable foundation, and the consumption of the spiritual and dark dual cultivation in the knot pill was obviously far greater than that of ordinary knots, so the aura of heaven and earth absorbed now was far beyond that of ordinary monks, and the range of aura attracted was also wider, and for a while, the aura thousands of meters away also began to flow to Yu Fei's side, forming an incredible and shocking scene.

It's a pity that there is no audience here, only the elders who monitor the Danyuan Secret Realm are watching stupidly, and Xue Fei who has fallen blood mold not far away.