Nie Bufan can also refine alchemy, and his level is not low. He was taught by Nie Changfeng by words and deeds, which made him outstanding among his disciples of his generation, and his alchemy skills were unrivaled.

In his opinion, alchemy must be carried out in accordance with specific steps, and only in this way can a more perfect elixir be refined.

However, Yun Yi's method is to extract all the medicinal materials at the same time, so how can it be perfect?

So, in his opinion, Yun Yi is just a mess.

Nie Changfeng is different. His attainments in the art of alchemy have reached the level of perfection.

At the beginning, he also felt that Yun Yi was making a fuss.

But after seeing Yun Yi's flame and his control over the flame, his impression changed. He stared at Yun Yi with his eyes, afraid that he would miss any details.

Moreover, as Yun Yi's alchemy continued, Nie Changfeng's eyes became brighter and brighter, and it looked like a student saw the teacher teach in his own hands.

Yun Yi ignored them and devoted all his energy to refining the Bu Tian Pill. Hundreds of medicinal materials were under Yun Yi's control, like elves flying in the flames, and a large amount of impurities were quickly removed.

Soon we entered the second step, fusion.

This is Yun Yi's second time refining the emperor-level pill, and his cultivation has reached the level of the sixth level of the Spirit King, and his soul power has been further improved and tempered.

Although he failed to break through to the emperor level, he was far superior to the ordinary Nine-level Spirit King, making it easier to refine emperor-level elixirs.

Therefore, when fusion, Yun Yi used a difficult alchemy technique to use more violent flames to promote the fusion of the elixirs to be more perfect.

The time of the entire process was greatly reduced. In just one minute, the fusion was completely completed and gathered together to form a longan-shaped pill.

From the beginning to the present, the whole process took only three minutes, which was reduced by two-thirds of the time compared to the first time when I refined the Qianyuan Blood Transformation Pill, and was even more perfect.

The great progress made Heifeng amazed.

All of this was imprinted into Nie Changfeng's eyes. He didn't expect that the pills could be refined in this way. The speed was not only fast, but every step was so perfect that even he could not find any fault.

"Dancheng!"

Yun Yi roared, and the red lotus karma fire suddenly rose, wrapped the pill, and calcined it twice, allowing it to merge again during the process of forming pills, and removed the excess magazines. Then the flames moved and dragged it into the air.

The next moment, the originally clear sky became dark clouds and lightning surged.

"What a strong Dan Tribulation."

Feeling the catastrophe clouds in the sky, based on Nie Changfeng's experience, this must at least contain the fifth level of pill tribulation, which is many times stronger than the Tianfu Pill he refined.

"bring it on."

Yun Yi immediately blocked his breath, Nie Changfeng and Nie Bufan were the same. Then, a elixir disaster descended and hit the Heavenly Bu Tian Pill.

This elixir disaster caused the Heaven-Budding Pill to bear it without even moving, and a mysterious elixir pattern appeared on the Heaven-Budding Pill.

"Father, you said, how many pill disasters can this Tianfu Pillage be able to withstand?"

Nie Bufan couldn't help but say that, logically speaking, alchemists like them could determine how many heavenly tribulations the pills they had cultivated could withstand through alchemy techniques.

Even if there are differences, it will only float up and down in one direction and will not deviate too much.

But Yun Yi's alchemy technique was unheard of, and it completely exceeded his cognition. With his experience, it was impossible to determine how many heavenly tribulations this Heavenly Pill could withstand, and he could not even guess one.

"In my opinion, at least five."

Nie Changfeng was also unsure. The reason why he was able to say this was based on his response to the alchemy. He didn't know whether it was the case or not.

When he recalled Yun Yi's alchemy process, he felt ashamed of himself, and he didn't expect that the elixir could be practiced like this.

Suddenly, he felt that he had lived to be a dog for so many years, and he was even comparable to a sixth-level spirit king.

boom!

As they were talking, the second elixir disaster also came. Like the first elixir, it did not cause any trouble at all.

boom!

boom!

boom!

Then there were three more paths, including the previous two heavenly tribulations, and five paths had already met Nie Changfeng's expectations.

However, the catastrophe clouds in the sky still had no intention of dissipating, and Yun Yi had no idea to stop. He was still looking at the Butian Pill with confidence.

The technique used by Yun Yi this time is also very advanced in the Hunyuan Dan Jing, and the most violent flames are used to induce the most perfect fusion degree.

This technique not only requires a powerful soul and fire control technique, but also requires very advanced flames, both of which are indispensable.

And Yun Yi has all three, the soul at the peak of the Nine-Level Spirit King, the powerful Hunyuan Fire Control Technique, and the King of Ten Thousand Fires, all of which are extremely powerful.

Therefore, Yun Yi has enough confidence in this Tianfu Pill, and the six tribulations are not its limit at all.

boom!

The sixth heavenly tribulation came down and hit the Heavenly Repairing Pill heavily. This time it was not as calm as before, and it was directly smashed and shaken.

But the Bu Tian Pill still did not retreat. After absorbing this heavenly tribulation, six pill patterns appeared on the Bu Tian Pill.

The six elixir patterns are intertwined, with a faint light blooming, and a colorful halo is vaguely seen, which is very charming.

"It's almost done?"

Nie Changfeng's heart was raised. He now completely believed Yun Yi's words. You know, this Tianfu Pill is a pill that is difficult to refine.

Yun Yi can refine it to the level of six tribulations, and the Qianyuan Blood Transformation Pill is even more troublesome.

"It's not enough, come again."

Yun Yi didn't take Nie Changfeng's reminder seriously, and in his opinion, there was no difficult pill to practice.

The reason why they find it difficult is because they have not mastered the correct method.

Moreover, he was full of confidence in the Heaven-Budding Pill he had refined, and the Six Tribulations were still not the limit of the Heaven-Budding Pill, so he shouted to the sky.

The catastrophe cloud in the sky seemed to feel Yun Yi's ignorance, and immediately became angry, and another elixir disaster came down.

The lightning light as thick as an arm instantly landed on the Bu Tian Pill and directly smashed it into the ground.

This time, the lightning lasted for a quarter of an hour before finally dissipating. Nie Changfeng and Nie Bufan were even more nervous than Yun Yi, so they ran over immediately.

Looking down, I saw a round sky-boosting pill in the pit on the ground, and there were seven elixir patterns with colorful halos blooming on it.

"Seven Tribulations and Heavenly Pill, my goodness, this is going to go against the will of heaven."

Even though Nie Changfeng was mentally prepared, he was still shocked when he saw this pill.

This is a seven-tribulation pill. Since Dan Chenzi disappeared, the seven-tribulation pill has not appeared in the Xuan Realm for a long time.

Not to mention the seven-tribulation Heavenly Pill.
Chapter completed!