With a muffled sound from the Dan furnace, Shi Yi knew that this furnace of pills had been refined again, and this was the eighth furnace of pills that Shi Yi had failed since he began refining.

Through this series of failures, Shi Yi gradually became familiar with some of the problems that needed to be paid attention to in refining the Illusory Shadow Pill.

In fact, in addition to the technique, the most important thing in alchemy is the control of flame and temperature.

Shi Yi is not a monk of the way of heart fire, and this aspect is Shi Yi's shortcoming.

If according to the previous experience of alchemy, Shi Yi would use the fierce fire and high temperature supplemented by the cold air of the ice road, and use the method of balancing the temperature to refine the elixir.

However, at this time, the Dan fire used in alchemy has become the flame released by the blood-burning ability, which is completely different from ordinary flames, and the temperature released by its combustion will naturally be very different.

Therefore, under normal circumstances, Shi Yi needs to go through a large amount of refining to re-familiarize himself with the temperature released by the blood-burning ability in order to maintain the most basic three-percent pill rate.

In other words, Shi Yi's failure is just the beginning.

However, Shi Yi didn't plan to do it according to the previous model, and Shi Yi wanted to try a special method.

He took out a copy of the Void Flower and the auxiliary medicine again, and then Shi Yi skillfully removed the petals of the Void Flower one by one.

In this process, it is necessary to ensure the integrity of the Void Flower petals, while also not harming the stamens in the center of the petals, both of which are the main materials for refining the Void Pill.

Shi Yi is not a newcomer to the path of alchemy, and he is naturally clear about what medicinal materials should be treated and what to do.

Coupled with the ability of the mother borer, Shi Yi has absolute control over the body, and Shi Yi has always been very handy in doing this kind of meticulous work.

After processing the medicinal herbs, Shi Yi put them into the Dan furnace in order, and carefully closed the Dan furnace.

The Dan furnace used by Shi Yi now is no longer the Dan furnace he got from Zhao Lingzhou at the beginning.

That kind of entry-level Dan furnace, where can it withstand such a high-intensity refining as Shi Yi, it has already been completely scrapped.

What Shi Yi is using now is the high-grade Dan furnace that Shi Yi exchanged for his exploits in killing the enemy when he served in Liuguo.

The whole Dan furnace is circular and divided into two layers, the inner layer is completely closed, and the outer layer is hollowed out to add Dan fire.

Once the Dan fire is lit, the flame can follow the gap between the inner and outer layers, completely wrapping the inner layer and causing the temperature in the Dan furnace to rise rapidly.

In addition, the hollowed-out formation pattern on the outer layer powered by the Dan Fire will be fully activated during alchemy.

The function of these arrays is to make the inner layer of the Dan furnace rotate rapidly, and ensure that the temperature of the furnace body of the entire Dan furnace is consistent.

At the same time, the hollow pattern can also make the medicinal materials located in the inner layer of the Dan furnace completely suspended in the center of the Dan furnace.

It will not cause uneven heating due to the herbs sticking to the furnace wall, which will make the elixir refining fail.

For an alchemist like Shi Yi, who is not the way of heart fire, temperature control is undoubtedly a very important part.

Back then, Shi Yi also took a fancy to a function that he spent a lot of merit to buy this Dan furnace.

As Shi Yi activated the ability to burn blood, the blood located in the outer layer of the Dan furnace instantly burned.

The flames followed the gap between the inner and outer layers of the Dan Furnace, completely enveloping the inside, and when viewed from the outside, the inside of the Dan Furnace seemed to have completely turned into a fireball.

Shi Yi's eyes closely watched the temperature changes of the Dan furnace, and through the previous refining experience, Shi Yi judged the state of the medicinal materials in the Dan furnace, and was ready to use the cold to control the temperature of the Dan furnace at any time.

The two most critical time nodes for the refining of pills are the heating solution of medicinal materials.

If the temperature is not properly controlled, too high will cause the medicinal herbs to turn into ashes directly in the Dan furnace and the like.

Too low will lead to incomplete melting, which will cause uneven heating, which will also lead to alchemy failure.

Another point is the process of cooling and condensing the Dan liquid, if the temperature is not properly controlled, the Dan will not be able to solidify and form, and finally become the bottom of the Dan furnace.

Shi Yi's previous refining was a few times, but he was stuck in the liquefaction of the first point of medicinal materials and directly failed.

The first level has not passed, so naturally it doesn't matter the condensation of the Dan liquid.

This time, Shi Yi estimated the time, and at the stall when the medicinal materials were about to liquefy, Shi Yi did not deliberately control the temperature, but once again stimulated the ability to burn blood.

However, the target of Shi Yi's one-time stimulation was not the blood of the Dan Furnace as the periphery of the Dan Furnace.

Instead, inside the Dan Furnace, Shi Yi inserted a part of the blood into it before refining the Dan.

Under the effect of the blood-burning ability, the blood preset by Shi Yi burned directly.

The bright yellow flames quickly rose upward, aiming directly at the medicinal herbs located in the center of the Dan furnace.

Originally, these medicinal materials were in the process of being liquefied by heat, but now they were burned by the burning ability, and they turned into a cloud of ashes in an instant, and there was not a single residue left.

Generally speaking, the refining of this furnace pill can already be classified as a failure by this point.

After all, the medicinal materials that are used as raw materials for alchemy are gone, so there is still a hammer to refine.

However, Shi Yi still had no intention of stopping refining.

That's right, Shi Yi was ready to use it from the very beginning, and the blood-burning ability completely absorbed the characteristics of the burning object as a breakthrough in alchemy.

The flame generated by the blood-burning ability on the inner wall of the Dan Furnace has completely burned the medicinal materials to the brink, which means that the flame has absorbed the characteristics of all the medicinal materials in the Dan Furnace.

As long as Shi Yi didn't forcibly extinguish that flame with his blood-burning ability, it could be regarded as an alchemy herb itself at this time.

But all the characteristics of medicinal herbs, that flame also has all of them.

In that case, why not continue to refine against the flame in the Dan furnace.

Moreover, this flame not only has the medicinal properties of medicinal materials, but also has characteristics that the original medicinal materials do not have.

A flame is a flame after all, and it will not be directly damaged by temperature like medicinal herbs.

In this way, Shi Yi no longer needs to worry about the temperature at all, and directly uses the maximum firepower to refine, and there will be no possibility of damage.

Sure enough, when Shi Yi used the fierce fire to calcine the Dan furnace without any scruples, the medicinal properties of the flame began to liquefy very smoothly, and there was no situation where the fire was too strong to burn it at all.

Regarding this point, Shi Yi used his keen sense of smell to determine the faint medicinal fragrance that wafted through the Dan furnace.

At this point in the refining of the elixir, Shi Yi couldn't help but show a smile.

Facts have proved that Shi Yi's idea is feasible, using the ability to burn blood to completely burn medicinal materials in an instant to absorb medicinal properties, and then use it to refine the pill by refining fire.

Because the medicinal herbs have turned into flames, Shi Yi no longer needs to pay attention to what temperature in the refining process, just use the most fierce firepower to refine it.

In this way, he completely avoided the shortcomings of the monk who was not the way of the heart fire and was not good at controlling the flames......