Ling You said that he went to Shangong Hall after he came out of the Skills Pavilion.

He does not need a large amount of spiritual valleys to refine Yanggu pills, as well as five auxiliary first-level spiritual medicines, and he needs to buy them.

When I arrived at Shangong Hall, I first paid a visit to Ling Jieran, and then entered Shangong Hall.

He bought 100 kilograms of spiritual valley and ten auxiliary spiritual medicines for refining Yanggu pills, totaling 200 low-grade spiritual stones.

After collecting the Spirit Valley and the Spiritual Medicine, "By the way, do you have a low-level fire source stone here?"

"Low-level fire source stones are generally only needed by alchemists. If the family's alchemists lack fire source stones, they are directly distributed by the family and do not need to be purchased with spirit stones. So I don't know if there is fire source stone in Shangong Hall. I need to check it out. Please wait a moment."

"Um."

Cangli Lingshi does give fire source stones to the family's alchemist, but alchemist apprentices do not enjoy this treatment.

Generally, when an alchemy apprentice first refining alchemy, they use 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 Pill and the elixir rate reaches 30%, you can apply to the family to become a formal alchemist. After the application is successful, the family will distribute the fire source stone to him.

Ling Youdao's guidance alchemist was Ling Yuansheng, but he was in seclusion at this time. Ling Youdao naturally could not use his fire source stone, so he had to buy one by himself.

Fire source stone is an ore condensed in the fire-attributed earth veins. It has a small output and is mostly low-level fire source stones. The probability of high-level fire source stones appearing is very small. Even if it appears, it is used by foundation-building monks to refine spiritual weapons, and even by Jindan monks to refine magic weapons. Therefore, each high-level fire source stone is very precious.

The low-level fire source stone can act as a fire for alchemy, which is easy to carry with you, and is very convenient. Moreover, this fire is relatively gentle, and is very suitable for first-level alchemists and alchemy apprentices like Ling Youdao who have just learned alchemy.

In addition, low-level fire source stones can also refine magic weapons. However, because the fire of low-level fire source stones is too mild and has insufficient lethality, the general magic tools will not use fire source stones unless some special magic tools are refined.

Soon, the man walked out with a red stone.

In an instant, the temperature in the whole room suddenly rose, and it spread out from the red stone in the man's hand as the origin. Ling Youdao felt the heat waves rushing.

"There is a low-level fire source stone."

Upon hearing this, Ling Youdao's face showed joy.

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

"It requires three hundred low-grade spirit stones."

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

A water-blue light flashed on his right hand, and he stretched out to take over the fire source stone. The water-blue light wrapped the fire source stone to prevent its fire air from being lost.

Immediately put it in the storage bag and then left Shangongtang.

Soon, he returned to his own courtyard in Qifang.

In the room, Ling Youdao sat cross-legged on the cushion, and the pill recipe of Linggu Pill appeared in his mind.

Each furnace Yanggu elixir requires ten kilograms of Linggu. The essence in the Linggu is extracted, and five auxiliary spiritual medicines are added, and finally concentrated into pills.

Ling Youdao recalled over and over again, pondered and understood the refining steps in the pill recipe, and the things that need to be paid attention to during the refining process.

He even practiced how to refine alchemy in his mind, but the drill was just a drill after all, which was far from the actual operation.

Three days passed quickly. Ling Youdao realized how to refine Yanggu Pill and left the house and walked to the center of the yard.

Take out the first-level top-grade fire stove from the storage bag and place it on the stone table.

He smiled, "You finally came in handy."

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

Then the ban on the fire source stone was broken, and instantly, the temperature in the entire courtyard increased sharply, and it was really a heat wave to emptiate it.

Before refining the alchemy, you need to warm the furnace for a period of time. Only when the temperature in the alchemy furnace is right can you put the spiritual medicine and formally refine the alchemy.

During the period of Wen Lu, Ling Youdao practiced to refine Yanggu Pill in his mind again.

Then, he opened the furnace cover, took out the ten-kilogram Linggu and put it into the fire stove.

The fire stove looks small, and the ten-pound Linggu seems to be too many.

But as soon as you enter the fire furnace, the size of the Ten Jin Ling Valley becomes smaller and is suspended in the center of the fire furnace.

Although he had practiced it in his mind many times, he was still panicked when actually operating it.

The Ten Jin Ling Valley was churning in the fire furnace, but he couldn't control it. In a short while, there was a lot of burnt in the Ten Jin Ling Valley.

However, Ling Youdao did not give up. He tried these ten kilograms of Ling Valley and began to learn how to slowly control how to extract the essence of Ling Valley.

After repeated several times, he finally extracted some essence of the Spirit Valley, but more Spirit Valleys ran to the bottom of the fire furnace, and became charred, and bursts of burnt smell floated out.

Ling Youdao was not discouraged. He cleaned up the fire stove, adjusted his mentality, summarized the previous experience and lessons, and practiced it in his mind.

Then he put in the new Ling Valley of Ten Jin, which was suspended in the center of the fire stove. He controlled the Ten Jin Ling Valley to churn gently in the fire stove, just like a stream of water, but there were some bumps and bumps.

Gradually, the essence of the Spirit Valley was extracted by him, and then more and more. At the same time, the Spirit Valley began to become burnt and gradually became black due to the high temperature.

Instead of paying attention to the charred spirit valleys, he focused on the process of extracting the essence of the spirit valley.

Although the second time failed, it has made great progress compared to the previous time.

It was not until the fourth time that Ling Youdao successfully extracted the essence of the Ten-Kim Spirit Valley.

"It's time to put the elixir now."

First, I put in a spiritual medicine. With a "boom", the spiritual medicine I just put in started to burn.

Ling Youdao was very upset, "I forgot to cool down."

He controlled the fire stove to cool down and then put in a magic medicine just now.

The spiritual medicine did not burn directly this time, and he immediately put another spiritual medicine in it.

The second spiritual medicine did not burn, and a smile appeared on his face, and the third spiritual medicine was slowly added.

At this time, Ling Youdao had to control the essence of the Spirit Valley and control the three kinds of spiritual medicines, and began to get a little busy.

As soon as something happened, the essence of the Spirit Valley collided with three kinds of spiritual medicines, and it started to burn with a "boom".

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

In this way, he could not reach the level of elixir until the sixth time.

The most important thing in refining alchemy is to condense the alchemy, and he was energetic about it.

However, it is indeed difficult to condense the pill, and he failed in an instant.

On the seventh time, he completed the elixir and then covered the furnace cover.

Taoist Master Ling You let out a sigh, "Huh, I finally got to this point."

Three hours later, the furnace lid was opened and there were only ten charred pills in the fire.

"I don't give up, there is another chance."

Clean up the fire stove, adjust your mentality, summarize the previous experience and lessons, and practice it in your mind.

Put in ten kilograms of spiritual valley, extract the essence of the spiritual valley, cool down, add five spiritual medicines that have been prepared in order, extract the essence of the spiritual medicines, combine the six spiritual liquids into one, condense the pill, cover the furnace cover, and complete it in one go.

After three hours, open the furnace cover!
Chapter completed!