Yang Ji walked along the cave and soon saw two stone doors.

As soon as it was pushed away, a wave of heat hit.

The air inside had become distorted by the heat, and streams of red heat were clearly visible.

It was an airtight stone chamber, the size of a house.

The source of the high temperature was the red flame in the middle of the stone chamber, the grinding disc was so big, it rose half a zhang high, it was burning, there was no trace of black smoke, the flame was very pure.

Yang Ji looked at the [Earth's Heart Fire, and there was a trace of spiritual energy in it. 】

Psionic!

Yang Ji's eyes lit up, although it was not a spiritual fire, this trace of spiritual energy was much stronger than the flames prompted by low-level fire attribute spells.

"In that case, let's start refining."

Yang Ji wiped the storage bag, and a palm-sized, quaint Dan furnace appeared in his hand.

As soon as he entered the spiritual power, he quickly became half a zhang tall, and fell on the ground fire with a bang, and swept it all into the furnace.

[You start alchemy, and the stove begins.] 】

Seeing this information, Yang Ji was excited in his heart, and instantly felt stable.

Sure enough, alchemy is like cultivation, and there is also information to display.

The first step is to warm the furnace, and when the whole furnace has heated up, the refining can begin.

Alchemy is a job that requires patience, and in the process of waiting, Yang Ji took out a thin pill and studied it.

The pill recipe of this Linghua Pill records the amount of each elixir, as well as the order of delivery, the heat required to refine the elixir, and so on.

Only when the amount of each elixir is appropriately proportioned can it become a pill.

And the heat is the key to refining the elixir, the fire power is not too strong or too low, it must be just right.

Yang Ji studied for a long time.

A stick of incense also passed quickly.

According to the records on the Danfang, after the stove burns incense, then you can start refining.

Yang Ji accepted the Danfang, then patted the lid of the furnace, revealing a small opening, and quickly put a Linghua grass into it.

[Snort~, a burnt smell came out, the Linghua grass was ruined, the temperature was too high, and the stove failed. 】

Well?

Too hot?

Isn't it the time for a stick of incense?

Yang Ji's mind turned extremely fast, and he instantly thought of a possibility.

Is it because of the different flames used? The person who wrote this Danfang didn't use earth fire?

At the moment, staring at the furnace [the temperature is high, 300 °C. 】

It seems that 300°C will not work, so try again to find the right temperature.

Yang Ji was not discouraged and was ready to try again.

Outside the stone room, the fire source peeping through the thin slit smelled a scorching smell coming, and it instantly became dark, and he said in his heart:

"I thought I had a lot of ability, but I even failed to warm the stove."

"Hehe, it must be a gourd to draw a scoop, how can alchemy be so easy?"

"What is described on the Dan prescription is only approximate, and the small details that are really implemented are innumerable, and if there is a slight mistake, the medicine will be ruined."

"This little baby, think that she can become an alchemist by recognizing a few elixirs? There's still a lot to learn. ”

Huo Yuan's little eyes flashed proudly, and with his hands behind his back, he returned to the cave with a proud look.

Apparently, he didn't think the young man in the stone chamber was any longer worthy of his continued attention.

Inside the stone room, Yang Ji continued to try.

[The temperature in the furnace is 250 °C, snorting ~ Linghua grass is ruined, the furnace fails, and the temperature is too high. 】

[The temperature in the furnace is 200 °C, the Linghua grass begins to melt slowly, and the furnace is successfully heated, the best temperature. 】

"It turns out that the best furnace temperature for refining Linghua Dan is 200 °C, not so much a furnace, but a temperature of 200 °C for smelting the first Linghua grass."

Yang Ji was overjoyed in his heart, and destroyed the two elixirs, finally taking the first step, and also made preliminary improvements to the Danfang in his heart.

He then controlled the flame through a secret door at the bottom of the furnace to keep it at 200°C.

Because the [200°C] will be clearly displayed with a sweep of his eyes, if the temperature is a little higher or lower, he can make subtle adjustments to the flame through the secret door in time.

The temperature is constant, and under the condition of ensuring that the medicinal power does not evaporate, the Linghua grass is slowly melting.

After all of them were melted, Yang Ji patted the lid of the furnace and put in another elixir.

As soon as it was put in, there was an instant message showing that the green leaf grass was melting at a rapid rate, and the medicinal power evaporated by 2%. 】

When Yang Ji saw it, he hurriedly lowered the furnace fire, and it was not until it stopped at 180 °C that the melting of the green leaf grass tended to be stable and mild.

At this time, Yang Ji improved the Danfang and wrote down the melting point of the green leaf grass.

Linghua Dan is just a low-grade Lingdan, and it is not so complicated to refine.

There is no need to fuse two or two, but to form a new liquid medicine by fusing three or three.

It is very simple to melt all the elixirs one by one, and then fuse them according to a specific ratio, and then solidify the elixir.

Yang Ji smelted two elixirs, and he understood that the so-called heat of smelting medicinal materials was nothing more than the need to find its best melting point.

At this moment, he directly looked at the remaining five elixirs [Luoyun Grass, melting point 160 °C...... Liuyun flower, melting point 155 °C. Purple leaf teng, melting point 100 °C. 】

Knowing all the melting points, Yang Ji began to melt them one by one.

In the end, seven potions were obtained.

Yang Ji began to follow the records on the Dan Fang, leaving a certain proportion.

But in the end, these seven stalls of medicinal liquid could not be fused together.

Yang Ji was puzzled, and looked at it [The proportion of the liquid medicine is not right, and it cannot be fused. The proportion of Luoyun herbal liquid is too low. 】

Is the ratio of liquid medicine too low? Obviously, according to the Dan prescription......

Suddenly, he slapped his forehead and came to his senses.

Yes!

The Luoyun grass recorded on the Danfang is fifty years old, but the one I smelted is forty-nine years old.

Although it is only a year apart, the medicinal power contained in it is completely different, and if it is fused according to the above ratio of the Danfang, it will definitely not work.

The fruit of the same tree is still sweet and sour, and even if the elixir of the same year is grown and other reasons, the medicinal power contained is not the same.

No wonder alchemy is difficult.

The first difficulty is in smelting, if it is not for the assistance of the golden finger, you can see the temperature in the furnace and the melting point of the elixir at a glance, otherwise how can you control the flame smelting so handily?

If there is no gold finger assistance, but if there is a slight discrepancy between the year of the smelted elixir and the one recorded on the Dan Fang, then the so-called several percent of the fire recorded on the Dan Fang is blind.

If it is refined according to the heat on the Danfang, either the firepower is too strong or the firepower is too low, and it needs to be finely adjusted during the period.

No wonder it is said that alchemy takes three to five days, and I think the time is spent on adjustment.

The second difficulty is the proportion of liquid medicine.

Although the Dan Fang is an experience ratio obtained through countless alchemy, the medicinal power contained in each elixir is different, and if it is rigidly according to the Dan Fang's records, then it will definitely not work.

Again, this requires constant experimentation and a waste of time.

I don't know how much elixir will be lost during this period.

After Yang Ji refined it, it was suddenly enlightened.

Danfang is only approximate, it seems that the actual operation still has to be flexible.

At this moment, he was about to smelt some more Luoyun grass and put it into the Dan furnace, but at this moment, the information showed that there had been a change [because the ratio was not right, the seven kinds of medicinal liquid began to have adverse reactions, the medicinal properties changed, and the medicinal liquid was destroyed. 】

Hearing a bang, a puff of white smoke rose from the Dan furnace, and all the medicinal liquids burned instantly.

Yang Ji saw this scene, shook his head, and sighed that it was a pity, this was more than two hundred spirit stones, and it was destroyed like this.

However, he quickly came back to his senses, and after cleaning the Dan furnace, he began to refine again.

With the first attempt, the second time is much faster.

After some operation, all the seven elixirs were smelted in a single stick of incense.

At this moment, he put aside the pill prescription and looked directly at the medicinal liquid [the best fusion ratio, Linghua Grass 100%, Luoyun Grass 95.2%, Qingyun Grass 94.02%...... Wisteria 50.01%. 】

Seeing this scene, Yang Ji called out in his heart Good guy, the tentile position is accurate, if it weren't for Yuanying Zhenjun's shot, how could such a strong divine sense be able to divide the proportion so finely?

Even if Yang Ji has a golden finger to see the proportion data in real time, he has to carefully remove those excess liquids, otherwise how can it be so accurate?

After some operation, it also consumed a lot of his mind.

That strange said that alchemy requires a strong divine soul perception, and he understands it.

Although the process was complicated, the result was very satisfying to him.

The seven potions had fused into a new puddle of cyan liquid, and the reaction had begun.

The next step is to warm it, and when the liquid reaction is thick enough, it can be divided into ten equal parts of the same size.

The last step is to turn Dan.

Spiritual power is sent into the Dan furnace, so that the divided Dan embryo slowly rotates along the Dan furnace, and finally the smooth and rounded pill with good quality can be obtained.

Time passed slowly.

After the ten pills inside were completely formed, Yang Ji patted the pill furnace.

Rumble!

A slight thud rang out, and a strong scent of Dan suddenly rose inside.

At the moment when he opened the furnace, the fire source outside the cave pricked up his ears, and he suddenly wondered:

"This ...... This seems to be the sound of the Dan gas punch? ”

Immediately after, a stream of danxiang rushed into his nostrils, and his eyes straightened in an instant.

Unbelievable,

"It's ...... Danxiang? He did it? ”

(Ask for a recommendation ticket!) ）