The ancient monks used the Liuyi mud furnace to make alchemy.

The formula of this 61 mud has long been broken, and it has been debated for hundreds of years, and there is still no accurate data. Therefore, what Zhang Jintong said is true, unless there is any treasure born, there is only this divine furnace left in the world.

"The traces of the grass hut outside the cave are said to have been left by the ancestor, and I don't know if it's true or not. The water of this waterfall can be used for alchemy, so you can rest assured. Oh, are you two staying here for a while, or are you going back with me?" asked the old man.

"Let's stay first, there's Master Lao. Gu Yu said.

"Okay, I'll have some supplies and dinner delivered later, as well as the luggage for the two of you, and I'll come back tomorrow. ”

Zhang Jin finished speaking, wiped his body and jumped out of the stone cave, and went down the mountain without looking back. He understands the rules of the rivers and lakes, alchemy is a very hidden thing, if outsiders peep, he won't have to talk about killing him on the spot.

Today's Heavenly Master's Mansion also retains some alchemy, such as the pills that Zhang Shouyang gave to Lu Yuanqing. But they use ordinary pill furnaces, and the pills are not finished grade, they are nothing more than powerful life-saving drugs or tonics.

And this furnace, the Heavenly Master's Mansion has never used it, because of the lack of strength, it can't even be opened.

At this moment, Gu Yu and Xiao Zhai were surrounding the Dan furnace, seeing that it was simple and clumsy, and its appearance was black and black, like a thick layer of charcoal powder, and they didn't know where to start for a while.

"Let's take it apart first, and then clean it, shall we?" Gu Yu suddenly proposed.

"It's okay, you have a lot of strength, you come. Xiao Zhai took two steps back.

Shh

Gu Yu didn't bother to complain, why do I have a lot of strength, it's obvious that you are dirty! He shook his head, rolled up his cuffs, first held the top bead, used three points of force, and then twisted it.

Hey?

It didn't move.

He used another five points of force, and then twisted it, only to hear a "rattle", and the top of the tower was slightly loosened.

Gu Yu was very surprised, so he simply used a lot of force, "Bang!" With a huge muffled sound, the top of the tower was finally unloaded. And he looked in, and first looked at a strange huge container, called "water sea", which was used for cooling.

The water sea is demolished, and below is the hanging fetus, which is used to put the herbal gold stone. It hangs in the furnace, and below it, there is a dan stove that adds fire.

He took out a total of four pieces, which was a little laborious, but he pretended to be very tired, and said, "I'm done, you can wash it." ”

"Tsk, stingy man!"

Xiao Zhai was very disdainful, stretched out his right hand, put his two fingers together, and shouted, "Come water!"

"Wow!"

The voice fell, and I saw the waterfall like the Milky Way hanging upside down, which was cut off out of thin air, as if half of it was cut off with scissors, and the lower part disappeared completely. It took two seconds for the waterfall to continue and cascade down.

And in the void in front of her, a huge ball of water suddenly appeared.

The water balloon seemed to be alive, slowly wrapping the four parts, and then like a slime with a self-contained heart, it cooed up and down there.

Belch!

Gu Yu looked a little disgusted, and said, "Why don't you say it silently, you have to shout?"

"Pretend you know how to control water!"

Xiao Zhai responded as a matter of course, seeing that the water balloon gradually changed from transparent to black and gray, and put his fingers together: "Go!"

The black ball disappeared in an instant, and appeared outside the cave in a blink of an eye, and a black rain fell in a hurry, all of which were poured in the mountains and forests.

“……”

Gu Yu didn't want to pay attention to her, and only looked at the four parts, and this look was suddenly amazing.

When the carbon layer fades, a kind of ancient clumsy color that looks like gold but not gold, like stone but not stone, like soil but not soil, is presented.

"This is the appearance of a divine furnace, I have wronged you. ”

Gu Yu was very happy, and after carefully assembling it, the big guy swung there, which was as thick as a mountain.

By the end of the day, it was getting dark.

The four disciples of the Heavenly Master Dao carried many objects and quickly ascended the mountain. Zhang Jintong was very thoughtful, such as the tent bedding for accommodation, the dishes and chopsticks for eating, the flashlight for lighting, and the charcoal for adding fire.

Gu Yu and Xiao Zhai set up a tent outside the cave and did not continue, but closed their eyes and meditated to adjust their spirits.

You must know that in ancient times, monks refining pills had to fast, crown, drape, kneel and hold the medicine furnace, pray to the Great Dao Tianzun, and then go into the mountain. The time should be on the auspicious day of the opening month (three or nine), the altar should be burned to burn the talisman seal, and the sword and ancient mirror should be inserted in the furnace and so on.

Some may be psychological comfort, and some may be really effective.

They didn't deliberately arrange it, but just in time for March, they also picked an auspicious day, that is, tomorrow.

…………

The next day, the morning light.

Gu Yu practiced for a whole night, and he didn't stop at this time, swallowing and spitting, and was eating the qi of the morning glow. When Chu Yang completely jumped out of the horizon and dispelled the faint mountain white fog, he got up and felt full of energy.

Xiao Zhai on the opposite side also opened his eyes, and the same brilliance flowed, and the brilliance was restrained.

The two of them looked at each other, stepped on their feet, and jumped into the cave together.

Gu Yu opened the box and took out a medicinal herb for dispelling evil spirits, the grade of the dispelling elixir was lower than that of refining the form and benefiting the divine pill, so it was better to try it first.

After long-term experiments, a set of systematic methods has been formed, including dozens of methods such as flying, ascending, pumping, volting, pointing, guan, raising, boiling, refining, forging, researching, and sealing.

Each of them requires a perfect coordination of spiritual power, divine sense, skills, and heat, and if you are not careful, you may waste a material.

"Xuanzhu Heart Mirror Record" has clouds: dispelling evil pills, half of the materials are researched into small pieces, two or two are made into a package, and wrapped in a coarse cloth bag. Half of the material is dried in the shade, boiled with water, and the cloth bag is hung in the ding, water is added frequently, and the cloth bag is gradually lightened and the juice is thickened in two or three days. Cook until four or five days, the medicine is already in the juice, take a cloth bag, boil it again, ascend to Dan, become a Dan fetus, that is, harvest.

To add fire is, six taels of charcoal are added to the fire at 7 o'clock in the morning and afternoon every day.

Isn't it brief? Briefly! No way, try.

Gu Yu put the materials into the ding, then hung the cloth bag, and then covered the top of the tower. Xiao Zhai added charcoal to make a fire, and in the blink of an eye, the furnace was red and the heat rose.

Then, the two of them sat cross-legged on both sides, their divine senses out, and they kept an eye on the situation.

"Goo-toot!"

"Goo-toot!"

The material was originally a plant and tree, and when it was soaked in water and steamed, it quickly became soft and rotten. The water also takes on a strange mix of red, green, yellow, and black.

And the hanging cloth bags were also quickly soaked with steam, wet and soft.

The waiting time is probably long, but fortunately, the two of them are not boring to check while practicing. At noon, Zhang Jintong came once, saw the smoke and flames in the cave, and didn't dare to go in, and stood for a while before leaving.

In this way, the two of them added charcoal and water on time, took care of it, and the day passed in a blink of an eye.

Sure enough, the cloth bag seemed to be shriveled a little, and Gu Yu touched it with his divine sense, and the weight was a little lighter. And that pot of strange soup, the color slowly blended, and it was infinitely close to green.

And just like that, four days passed.

The bag is completely shriveled and the soup is thick. Xiao Zhai took out the small handling technique, took out the cloth bag in an instant, opened it and took a look, ho, the medicinal materials were almost vaporized, and only some broken slag stuck to it.

"Almost. She said.

"Well, I'll come first. ”

Gu Yu's hands stretched out, as if hugging the Dan furnace, and two soft spiritual powers emanated along the palms and poured in from the stoves on both sides. The fire was rushed by it, and it immediately rose several inches.

And as the spiritual power became bigger and bigger, the flames were raging, licking the bottom of the ding, as if they wanted to devour and melt it. The already viscous soup was even more gurgling, and bubbles continued to burst, and soon turned into a half-liquid and half-solid form.

This step, called Shengdan, is the pre-procedure of Dancheng. On the other hand, there is also the Dan Descendant, which will be used when refining complex pills.

Xiao Zhai looked at her boyfriend worriedly, and in just ten minutes, her face was covered with fine sweat. Rao is his deep spiritual power, and he can't afford to be so mad.

A shudder, hundreds of millions of them are gone.

"Hoo ......"

After holding on for more than ten minutes, Gu Yu finally couldn't support it anymore and shouted, "Take over!"

Xiao Zhai didn't dare to slack off, and hurriedly replaced the other party. As soon as Gu Yu withdrew his hand, he immediately took out the wine gourd, poured a few sips, and then seized the time to breathe.

“……”

Xiao Zhai pursed her lips, she was unprecedentedly serious, her spiritual power was not her strong point, she lasted about fifteen minutes, and she was about to hit the street. And at this moment, the soup is getting drier and smaller, and I am about to become a Dan fetus, but I listen to "Bang!"

A stream of green fluffy things exploded, splashing in all directions in the ding, and the tires were already flowing (the material was not controlled, and the meaning of scrapped was).

"Alas, my fault!"

Xiao Zhai sighed, his face unhappy.

"It's okay, the first time. ”

Gu Yu took another sip of wine and said, "Shengdan consumes a lot of spiritual power, next time you come first, I will support you a little longer, so that you can breathe." ”

"Good!"

So, the two finished their conditioning and started the second round of trials.

It's easy to say that when it comes to Shengdan, Xiao Zhai will go first, and Gu Yu will take over. This time's strategy was good, and after he was exhausted, Xiao Zhai happened to renew successfully.

As she activated her spiritual power, she poked out her divine sense, and the pot of soup had become jelly-like, dark green throughout, like a slime lying on its stomach in it.

This is the most basic Dan fetus, she immediately used a roll of divine sense, wrapped the carcass, and slowly kneaded it. Until it is round and full, transparent and bright, it can be formed.

It seemed that everything was going well, but after a few seconds, Xiao Zhai suddenly looked calm and became more and more unhappy.

Lei Fa is strong and invincible to the enemy, but when she plays these big jobs, her shortcomings come out: insufficient accumulation. This time it's the same again, and it's just a bit of a loss.

Bang!

After all, the carcass was not formed, and the tire was misformed again.

She jumped up and flew out of the cave, where she heard a crackling, booming sound. After a few minutes, she vented enough, returned to her place and asked, "How long are you left?"

"In about five minutes, I'll be able to pick it up. Gu Yu roughly estimated.

"It's still a matter of recovery speed, how can I speed up the ......"

Xiao Zhai paused suddenly, turned his head to look at his boyfriend, Gu Yu also smiled helplessly, and took out a small box, in which were lying a few faintly glowing spirit stones.

"Alas, even if you are reluctant, you can only use this. ”