In the gloomy room, all kinds of medicinal herbs were piled up, and a raging fire burned under a Dan furnace in the center.

The heat released by the Dan coal makes the inside of the Dan furnace extremely hot.

Xu Yi is alchemy.

Whether it was Sister Zhang Miaoyan or Yuan Ding, they all thought that Xu Yi was refining the Realm Breaking Pill. However, only he understood in his heart that what he was refining now was not a Realm Breaking Pill at all, but a Returning Qi Pill and a Heavenly Spirit Pill.

As for the Burning Tendon Cleansing Pill, Xu Yi actually wanted to try one or two things. But it's a pity that one of the raw materials of this flavor pill is particularly precious, although Xu Yi gave Cui Tao a medicine list, but there is no material for refining the Burning Tendon Cleansing Pill.

After mastering the Realm Breaking Pill, there has been a lot of uproar. If you add another incinerated tendon cleansing pill?

For these key pills, Xu Yi has his own plans in his heart.

And now, a full twenty days have passed since the one-month deadline promised to Yuan Ding.

Xu Yi originally wanted to complete the alchemy task on the fifteenth day. However, after this retreat, he made new discoveries.

Dual-minded!

When he separates his mind and attaches himself to the two upper dantians, he can freely achieve two uses of one heart.

This is a true dual-purpose work, which can be said to completely split the body and mind into two.

For example, if someone was watching at this time, then they would definitely feel that Xu Yi was in the alchemy of one mind, and he concentrated all his spirit on this.

But in fact?

At this time, Xu Yi was refining the pill while conducting visualization training, his mind was attached to the planetary visualization object in the upper dantian, although he couldn't shake it in the slightest, but he tried his best to communicate with it.

This is the most basic way to exercise spiritual strength, to visualize one's subjective thoughts in the upper dantian.

And this is indeed fruitful, Xu Yi feels that his spiritual strength has been improved to a certain extent. Although it can't be compared with Zhang Miaoyan, compared with the crumbling state when Shangdantian was just opened, it is much tougher and thicker.

Not only that, as the time of visualizing the planet became longer, Xu Yi became more and more able to appreciate the strength of this thing.

Not to mention anything else, the powerful vitality released from the planet alone has already benefited him a lot.

For twenty days, he was in a state of sleeplessness, without the slightest feeling of fatigue and malaise.

This is simply an incredible thing, even if he is a cultivator, he will never have such abundant energy. However, with the advent of planetary visions, all of this changed completely.

Such a change is so appalling that Xu Yi doesn't even dare to reveal anything about Zhang Miaoyan's sisters.

With the help of the ability to use two minds, Xu Yi can do alchemy, visualization at the same time, or carry out the Great Zhou Tian at the same time.

That's right, the martial arts cultivation of the Great Zhou Tian is actually just to let the true qi circulate in the body along a certain route, and in the process to warm up the meridians of the body.

It can be said that as long as you have completed the transportation of the Great Zhoutian, then in the case of concentration, you can complete the second, third, or even countless times in an informal way.

When practicing, it's best to make sure that the five hearts are facing the sky, or lying down or something.

That's just to better focus, and it's not necessary.

Therefore, when Xu Yi can perfectly concentrate on two purposes, he can take the aphrodisiac pill and carry out the acquired transport, while taking care of the Dan furnace and conducting statistics and attempts in alchemy.

It can be said that dual-purpose is to allow you to do two things at the same time by yourself, and it will not affect and interfere with each other. He is doing both of these things wholeheartedly, so he can also achieve excellent results.

This ability is simply more useful to Xu Yi than any supernatural power at present.

However, there is a process of learning, familiarizing, and then practice makes perfect. Xu Yi has been pondering this ability in the past twenty days. To this day, I don't dare to say how skillful I am, but at least I have been able to send and receive from my heart, and I will not interfere with each other completely.

Opening the furnace, with a burst of medicinal fragrance coming to his nose, Xu Yi looked at the thirteen high-grade Heavenly Spirit Pills in the Dan furnace and nodded with satisfaction.

I don't know if there is a planetary vision, but the premonition ability he had when he was refining the pill became more and more enhanced. Therefore, in just twenty days, he had barely mastered the refining method of the top-grade Heavenly Spirit Pill and the top-grade Huiqi Pill.

Of course, some of these details still need to be explored and studied, after all, he has not yet made the best in these two pills.

However, as long as it was refined once, for Xu Yi, it was equivalent to mastering countless pills that were very different from each other.

After thinking about it in his heart, Xu Yi put away the pill, and after cleaning the pill furnace, he took out a small box from his arms. The box was specially made, and the inside was divided into many small squares, each of which contained a very small bit of debris.

This is no ordinary residue, if anyone can identify it, they will know that these are the residue of some rare things.

Or elixir, or rare medicinal herbs, or rare items like cold iron.

Of course, there is too little scum at this point, and it is useless for anyone to get it.

However, in Xu Yi, it is completely different.

He poured out a little medicine residue from one of the grids, this medicine residue was only the size of the fingernail cover of the baby's little finger, Xu Yi spread it in the palm of his hand, and as his mind turned, the medicine residue quickly became larger. In just a moment, this medicine residue had already turned into the size of an ordinary pill.

Xu Yi let out a long breath, only to feel that his spirit was finally a little tired!

Nima's, for the first time in 20 days, I'm feeling tired. To be honest, it even made him feel nostalgic.

Ever since he had more planetary visions, he didn't know what to do.

With one exhale and one inhale, Xu Yi's breathing rate had some kind of magical change, and this change was not sudden, but inexplicably felt when accepting the inheritance.

With that breath, the tiredness on his body was swept away after a short moment. The endless flow of life released from the planetary visions made it difficult for him to get tired.

As a result, the pill in his hand continued to grow larger, and soon it had become the size of an adult's fist.

At this point, Xu Yi stopped, first buckled a little bit the size of a fingernail in the pill and put it in the box, and carefully put it away. Then he put the huge elixir into the furnace.

As the temperature rises, the pill dissolves and soon condenses into a pill again.

Almost in a moment, twelve Realm Breaking Pills the size of a normal pill had been refined.

Xu Yi took out one and tasted it, that's right, the twelve peerless realm breaking pills, after twenty days of hard work, they were finally successfully refined.

In the past 20 days, he has worked so hard day and night!