Ling Youdao walked out of the Skill Pavilion and went to the Hall of Good Merit.

Refining Yanggu Dan required a large amount of Spirit Valley, as well as five auxiliary first-order elixirs, but he didn't have them, so he needed to buy them.

When he arrived at the Hall of Good Merit, he first met Ling Jieran, and then entered the Hall of Good Merit.

He bought one hundred catties of Linggu in one go, as well as ten auxiliary elixirs for refining Yanggu Dan, a total of two hundred lower-grade spirit stones.

Collected the spirit valley and the elixir, "By the way, do you have a low-level fire source stone here?"

"Low-level fire source stones are generally only needed by alchemists, and the lack of fire source stones for the alchemists of the family is directly issued by the family, and there is no need to buy them with spirit stones, so I don't know if there are fire source stones in the Good Gong Hall, I need to check it, please wait a minute." ”

"Hmm. ”

The Cangli Ling clan would indeed distribute fire source stones to the family's alchemists, but alchemy apprentices did not enjoy this treatment.

In general, when an alchemy apprentice first alchemy, he uses the fire source stone that guides the alchemist, and at the same time, the alchemist will also teach from the side.

When the alchemy apprentice can independently complete the refining of Yanggu Dan, and the Dan success rate reaches 30%, he can apply to the family to become an official alchemist, and after the application is successful, the family will distribute fire source stones to him.

Ling Youdao's guiding alchemist was Ling Yuansheng, but he was in retreat at this time, so Ling Youdao naturally couldn't use his fire source stone, so he had to buy one himself.

The fire source stone is the ore condensed in the fire attribute vein, the output is not much, and most of them are low-level fire source stones, the probability of the appearance of high-level fire source stones is very small, even if it appears, it is also used by the foundation building monks to refine spiritual weapons, and even used by Jindan monks to refine magic weapons, so every high-level fire source stone is very precious.

The low-rank fire source stone can be used as a furnace fire during alchemy, which is easy to carry around, very convenient, and this kind of fire is relatively mild, which is very suitable for first-order alchemists, as well as alchemy apprentices like Ling Youdao who have just learned alchemy.

In addition, low-level fire source stones can also be used to refine magic weapons, but because the fire of low-level fire source stones is too mild and the lethality is insufficient, fire source stones will not be used in the refining of general magic weapons, unless some special magic weapons are refined.

Soon, the man came out with a red stone.

In an instant, the temperature in the entire room rose sharply, spreading outward with the red stone in the man's hand as the origin, and Ling Youdao only felt a heat wave on his face.

"There's just a low-rank fire source stone. ”

Hearing this, Ling Youdao's face was overjoyed.

"How many spirit stones is this fire source stone?"

"Three hundred lower-grade spirit stones are needed. ”

As he spoke, Ling Youdao took out five hundred lower-grade spirit stones from the storage bag and handed them to the man.

His right hand shone with aqua blue light, and he reached out to take the fire source stone, and the water blue light wrapped the fire source stone to prevent its fire qi from draining.

He put it in a storage bag before leaving the temple.

Soon, he returned to his own small courtyard in the seventh room.

In the room, Ling Youdao sat on the futon, and the Dan Fang of Linggu Dan came to mind.

Each furnace of Yanggu Dan requires ten catties of Linggu, refining the essence of Linggu, adding five kinds of auxiliary elixirs, and finally condensing it into a pill.

Ling Youdao recalled it over and over again, figuring out and understanding the refining steps on the Dan Fang, as well as the matters that needed to be paid attention to in the refining process.

He even practiced how to refine the pill in his mind, but the drill was only a drill after all, and it was far from the actual operation.

The three days passed quickly, and Ling Youdao felt that he had already understood how to refine the Yanggu Dan and then left the house and walked to the center of the courtyard.

Take out the first-order high-grade furnace from the storage bag and place it on the stone table.

He smiled, "You've finally come in handy." ”

Take out the fire stone and place it under the furnace and above the stone table.

Then the ban on the fire source stone was broken, and in an instant, the temperature in the entire small courtyard increased sharply, and it was really a heat wave emptying.

Before alchemy, you need to warm the furnace for a period of time, and when the temperature in the furnace is right, you can put in the elixir and officially alchemy.

During this time of the furnace, Ling Youdao rehearsed refining Yanggu Dan in his mind again.

Then, he opened the lid of the furnace and took out ten catties of spirit valley and put it into the furnace.

The Flame Furnace seems to be small, and the Ten Jin Spirit Valley seems to be many.

But as soon as he entered the Flame Furnace, the size of the Ten Jin Spirit Valley became smaller, and it was suspended in the center of the Flame Furnace.

Although he had rehearsed it many times in his mind, he was still flustered when it came to the actual operation.

Ten catties of Linggu were churning in the furnace, he couldn't control it, and after a while, there was a lot of scorch in the ten-jin Linggu.

However, Ling Youdao did not give up, and tried to use this ten catties of Spirit Valley, and began to learn to slowly control and how to refine the essence in the Spirit Valley.

After repeating it several times, he finally refined some Spirit Valley essence, but more Spirit Valley ran to the bottom of the furnace, becoming charred black, and bursts of burnt smell wafted out.

Ling Youdao was not discouraged, cleaned up the furnace, adjusted his mentality, summed up the lessons learned from the previous time, and rehearsed it in his mind.

Then he put in ten catties of new spirit valley, and the spirit valley was suspended in the center of the fire furnace, and he controlled the ten jin spirit valley to churn gently in the fire furnace, like a stream of water, but there were some stumbles.

Gradually, the essence of Linggu was refined by him, and then more and more, and at the same time, because the temperature of Linggu was too high, it began to become scorched, and gradually scorched black.

He didn't pay attention to the scorched spirit valleys, but concentrated on the process of extracting the essence of the spirit valley.

Although the second time failed, it was a great improvement compared to the previous one.

It wasn't until the fourth time that Ling Youdao succeeded in refining the essence of the ten catties of Spirit Valley.

"It's time to put the elixir. ”

Put in an elixir first, and just listen to the sound of "boom", and the elixir that has just been put in will burn.

Ling Youdao was greatly annoyed, "I forgot to cool down." ”

He controlled the furnace to cool down, and then reinserted a potion.

The elixir didn't burn directly this time, and he immediately put in another elixir.

The second elixir didn't burn either, and with a smile on his face, he slowly put in the third elixir.

At this time, Ling Youdao had to control both the essence of the Spirit Valley and the three elixirs, and he began to be a little in a hurry.

As soon as something happened in a mess, sure enough, the essence of the Spirit Valley collided with the three elixirs, and they burned with a "boom".

Ling Youdao's face was covered with black ash, and he was really a big cat.

In this way, it was not until the sixth time that he could come to the step of Ning Dan.

The most important thing in alchemy is Ning Dan, and he has a 120% spirit for this.

However, Ning Dan was really difficult, and he failed in an instant.

On the seventh time, he finished the Ning Dan and then closed the lid of the furnace.

Ling Youdao exhaled, "Whew, it's finally come to this point." ”

Three hours later, the lid of the furnace was opened, and there were only ten blackened pills in the flames.

"Don't give up, there's one more chance. ”

Clean up the furnace, adjust your mentality, summarize the lessons learned from the previous time, and rehearse it in your mind.

Put ten catties of spirit valley, refine the essence of spirit valley, cool down, put in the five elixirs that have been prepared in order, refine the essence of the elixir, combine the six kinds of spirit liquid, condense the pill, cover the furnace lid, and complete it in one go.

After three hours, open the lid!