Chapter 471 Furnace explosion, dangerous!

next day

In the afternoon, Wei Hong came to the rented alchemy room.

After entering the alchemy room, he first closed the stone door, and then used the token to activate all the formation restrictions to ensure that no one could disturb him.

Walking to the wooden shelf, he took out all the materials needed to refine the Light Spirit Pill and checked them, and then placed them one by one in a convenient place so that he could access them at any time.

Then, he took out the bronze alchemy furnace from the storage bag and placed it directly above the ground fire outlet, just so that the position of the fire outlet faced the bottom of the alchemy furnace.

The alchemy furnace was placed steadily, and a faint scent of medicine came out.

Wei Hong took out the control token and inserted it directly into the flat groove left on the top of the stone pillar with a click.

That groove is designed just for the token, and it fits just right after the token is inserted.

Click, click, click!

As the control token was inserted into the groove, the layer of black rock covering the underground fire mouth instantly retracted to both sides, revealing the real underground fire mouth. It was a hole like a small volcano, with a stream of A weak flame was swaying gently in the entrance of the cave, and at the same time a warmth was radiating out.

Wei Hong immediately perked up, then input a bit of spiritual power into the control instrument at the top of the stone pillar, and pressed it gently with his hands, and the ground fire mouth immediately spewed out a three-foot-high flame from the bottom. The flame began to burn as soon as it rose. The bottom of the alchemy furnace.

He did not immediately put the materials into the alchemy furnace, but controlled the earth fire to continue calcining the alchemy furnace.

And the temperature was maintained like this until the alchemy furnace was burned and turned slightly red.

This step is called warming the furnace. The purpose is to allow the alchemy furnace to reach a suitable temperature before refining the elixir. It can also be regarded as allowing the alchemy furnace to adapt to the temperature of the earth fire.

After warming the furnace, Wei Hong reduced the ground fire slightly.

Then he picked up a purple-leaf bluegrass placed on the top shelf of the wooden frame with his left hand and put it directly into the alchemy furnace's feeding port.

From this step on, Wei Hong stared at the alchemy furnace with all his concentration.

After putting the purple-leaf blue grass into the alchemy furnace, he controlled the ground fire to increase the temperature. A flame rose instantly, and the orange-red flame completely surrounded the bottom of the alchemy furnace.

As the temperature of the earth fire increased, the temperature in the alchemy furnace also increased rapidly, and a plume of green smoke began to rise from the top of the alchemy furnace. The purple-leaf blue grass inside the alchemy furnace began to slowly burn under the earth fire. Withering slowly.

Wei Hong stared motionlessly at the alchemy furnace in front of him, steadily controlling the magic weapon with both hands, not daring to be careless for fear of making the slightest mistake.

He is already familiar with the process and steps of refining the Light Spirit Pill, and he is even more familiar with the temperatures required for various materials and the various changes after calcination.

But that was all theoretical knowledge in his mind. If he wanted to turn all that knowledge into experience, he would need to practice it step by step.

While the purple-leaf indigo grass inside the alchemy furnace withered, some purple liquid slowly seeped out from its surface. These purple liquids were the impurities of the purple-leaf indigo grass, which were slowly burned out by the ground fire, and then directly burned by the high temperature. Evaporated.

After the purple-leaf indigo plant stopped leaking liquid, a fine white smoke emitted from its body, and then the entire purple-leaf indigo plant was slowly burned into a blue powder, lying quietly in the Dan. Inside the furnace.

Wei Hong's face lit up, knowing that the extraction of the purple-leaf bluegrass had been completed, he couldn't help but feel slightly relieved. There was finally no error in this first step.

So he immediately lowered the temperature of the earth's fire, then changed the techniques with his hands, controlled a stream of spiritual power to enter the alchemy furnace, wrapped the small handful of blue powder with the spiritual power, and took it out of the alchemy furnace. Then he put in a jade bottle that had been prepared in advance, plugged the jade bottle and put it on the wooden stand. This was considered to have completed the refining of a material.

Then without any carelessness, Wei Hong began to put the second material into the alchemy furnace.

He gently placed a Tian'e flower into the alchemy furnace, and at the same time, he controlled the ground fire to heat up immediately.

At this time, a flame that was even hotter than before directly enveloped the bottom of the alchemy furnace.

The heat resistance of Tian'e flower is higher than that of purple-leaf indigo grass, so the temperature for refining Tian'e flower is also higher. This is the knowledge and experience brought by reaching the ultimate realm. If Wei Hong is allowed to explore and refine it by himself If so, I don’t know how many attempts it would take to find the right temperature.

The orange-red flames enveloped most of the alchemy furnace. Wei Hong controlled the temperature with a solemn expression, constantly burning the Tian'e flower in the alchemy furnace, his eyes unblinking.

After burning a cup of tea, the Tian'e flower slowly leaked out the impurity liquid.

It was a gray impurity liquid that seeped out from the surface of the Tian'e flower and was evaporated directly by the high temperature before it even dripped down.

At this moment, the flames that enveloped most of the alchemy furnace suddenly increased in intensity.

"not good!"

Wei Hong was shocked. He knew that this was because he failed to control the temperature and raised the temperature a little. He immediately secretly sighed that something was wrong and hurriedly stabilized the temperature of the ground fire.

But it was still too late. The Tian'e flower in the alchemy furnace suddenly turned into a ball of fire and was burned to ashes in an instant, not even a trace of powder was left.

"Alas!" Wei Hong couldn't help but sigh softly after seeing this scene: "It's really not easy. You can't control the temperature if you don't pay attention."

Fortunately, this failure was just a waste of a Tian'e flower. If it failed in the later fusion stage, it would be a waste of materials in the furnace.

Wei Hong shook his head to clear away his distracting thoughts, then picked up another Tian'e flower and threw it into the alchemy furnace, and continued to refine it.

This time Wei Hong was even more focused, steadily controlling the temperature of the ground fire, wrapping the Tian'e flower in it, and then continued to burn and refine it.

Fortunately, after the previous failure, he did not make any mistakes this time. He quickly successfully refined the Tian'e flower, put it into a jade bottle again and sealed it.

"call"

Wei Hong let out a breath and wiped the sweat from his forehead.

Although the high temperature of the earth fire was blocked by the isolation of the ban, the temperature in the alchemy room was not low, and Wei Hong had to devote himself wholeheartedly to the alchemy, so he couldn't help but sweat gradually broke out on his forehead.

Without any time to rest, he immediately put the third material into the alchemy furnace again.

Refining is only the first step in refining the Light Spirit Pill. Just refining all the more than ten kinds of materials is not a simple task.

After the refining is completed, there are steps such as fusion, condensation, elixir formation and elixir collection.

All of these require Wei Hong's full concentration. The slightest mistake will lead to the complete scrapping of the entire pot of elixirs.

Therefore, Wei Hong stayed in the alchemy room for a whole afternoon every time.