The interior of Danxia Mountain has been hollowed out and transformed into large and small alchemy rooms and refining rooms, and disciples during the Qi refining period will go to Danxia Mountain to rent a secret room if they want to refine pill refining tools.

There is a black hall more than ten zhang high on the mountainside, and people come in and out from time to time.

As soon as he walked into the hall, he was greeted by a hall the size of a hundred zhang, and more than a dozen red-clothed disciples were guarding near a long black counter, responsible for leading the way for the people who rented the secret room.

"I want to rent an alchemy room," Shi Yue walked to the counter and said to the deacon disciple behind the counter.

"One spirit stone a day, how long do you want to rent it," the deacon disciple glanced at Shi Yue and asked lightly.

"Two days," Shi Yue thought for a while, said like this, and after speaking, he took out two spirit stones and put them on the counter.

"Zhao Feng, take him to the No. 45 alchemy room, the time is two days," the deacon disciple commanded a red-clothed man with a white face, and after speaking, he took out a red square token and threw it to the red-clothed man.

"Follow me. The man in red dropped a word and walked towards a passage on the left side of the hall.

Seeing this, Shi Yue hurriedly followed, and after turning around, he followed the man in red to a row of closed stone rooms, and the air was filled with a faint medicinal fragrance.

Shi Yue noticed that several red-clothed disciples were guarding outside the stone room, as if they were waiting for something.

The man in red came to a stone chamber engraved with the words "Forty-Five" and placed the square token into a groove on the top of the stone door.

After infusing the mana, the square token shines brightly.

The next moment, with a "boom", the stone door opened.

This alchemy room is not big, there are five or six zhang in size, there is an antique yellow Dan furnace in the center of the room, on the three walls of the stone room, each inlaid with two lifelike golden-red dragon heads, and the mouth of the dragon head is slightly raised, just aimed at the Dan furnace, do a spitting posture, very realistic.

In front of the yellow Dan furnace, there is an emerald green futon.

"This junior brother, the earth fire required for alchemy is to spew out from these six dragon heads, and according to the need, the size and height of the flame can also be adjusted, and the specific driving method is recorded in this token," the man in red pointed to the six dragon heads and explained to Shi Yue, after speaking, he handed the square token to Wang Changsheng, he immediately remembered something, and then said:

"You only handed over two spirit stones, therefore, you can only stay here for two days, I will call you out as soon as the time comes, if you stay in it for more than two days, you need to make up the cost, in addition, once this stone gate is closed, it will be cut off from the outside world, unless it is a monk in the Dan period, no one in Dou Ze can enter from the outside, so although the junior brother can rest assured that the alchemy, no one will disturb you!"

"Thank you for your advice," Shi Yue thanked him.

The man in red nodded, and after a few more words, he withdrew.

Shi Yue injected mana into the square token, and a red light erupted from it, which disappeared into the stone gate.

With a "bang", the stone door closed automatically.

Shi Yue sat down on the futon, put the square token in the center of his eyebrows, and his divine sense invaded it to check the contents inside.

It didn't take long for Shi Yue to withdraw his divine sense, pinch the law with both hands, and hit the dragon head with six magic duels in a row, the dragon head suddenly shone brightly, and then the dragon's mouth spewed out a finger-thick red flame, six red flames, and finally condensed together at the bottom of the yellow Dan furnace.

Seeing this situation, Shi Yue's hand changed, and the flames spewed out from the dragon's head were much thicker, and the rolling flames flooded the yellow Dan furnace.

Seeing this scene, Shi Yue nodded with satisfaction, and as soon as the law was closed, the rolling flames collapsed and disappeared.

Shi Yue took out the jade slip that recorded the refining method of Bigu Dan and put it in the center of his eyebrows.

After a cup of tea, Shi Yue cooked the melons on the back of the steps of refining Bigu Dan, and put away the jade slips.

The essence of alchemy is actually the process of decomposing and reorganizing some medicinal materials and using high temperature to condense them into pills.

Everyone knows this process, but there are not many who can really refine the elixir, after all, the successful refining of the elixir must test the alchemist's ability in various aspects such as material allocation, temperature control, and baking time.

Even if there is a slight deviation in one of the links, it may lead to the failure of the entire refining process, therefore, learning alchemy requires a large amount of spirit stones, and only wealthy immortal cultivators can afford the spirit stones consumed to learn alchemy.

The speed of time passing in the mysterious space is ten times that of the outside world, as long as there are seeds, a large number of elixirs can be grown, and this is the capital of Shi Yue to learn alchemy.

The first step in refining Bigu Dan is to clean the spiritual rice, peel off the shell, and grind it into powder, and then clean the blood qi fruit and purple apricot and cut off the pulp, and the second step is to throw the spiritual rice powder and the flesh of the blood qi fruit and purple apricot into the Dan furnace and refine it into Dan.

There are two steps in total, the first step is very simple, that is, to clean the alchemy materials, process the materials, whether it can be refined into Bigu Dan, it depends on the second step.

Shi Yue took out a fist-sized piece of rice, peeled off the shell, cleaned it, cut it into small pieces with a dagger, and ground it into powder, and then, he took out a blood qi fruit and a violet apricot, cleaned it, cut off the flesh, and put it into the spiritual rice powder.

Shi Yue struck six magic duels at the six dragon heads, and from each dragon head spewed out a finger-thick red flame, gathering at the bottom of the yellow Dan furnace and slowly warming up.

Half an hour later, the Yellow Dan Furnace was already hot, exuding an astonishing heat.

Seeing this, Shi Yue hit the lid of the Dan furnace with a spell, and the lid immediately flew up and landed steadily on the ground, and then, he poured the spiritual rice powder, the flesh of the blood qi fruit and the purple apricot into the Dan furnace successively.

He pinched the trick with one hand, pointed at the Dan furnace, and the lid flew up and closed steadily.

In the Dan furnace, the pulp is baked at a high temperature and turns into several balls of juice in the Dan furnace, which is mixed with the spiritual rice powder and becomes a pale yellow sticky.

As time passes, the water in the juice slowly evaporates, and all that remains is the essence.

A faint aroma wafted out of the Dan furnace.

Seeing this, Shi Yue's hand changed, and the flames spewed out from the dragon's head suddenly doubled, and the rolling flames flooded the Dan furnace.

A quarter of an hour passed, and the aroma became more and more intense.

Most of the mana in Shi Yue's body was consumed, but he didn't dare to relax in the slightest, he hoped to hold on until the pill was baked.

Half a quarter of an hour later, with a "bang", a puff of black smoke came out of the yellow Dan furnace in front of Shi Yue, which was flooded by the rolling flames, and it was faintly mixed with a scorched smell.

Seeing this, Shi Yue raised his eyebrows, and as soon as he closed the law in his hand, the flames around the Dan furnace suddenly collapsed out of thin air.

Shi Yue hit the tripod cover with a magic decision, and the tripod lid automatically flew up and landed steadily on the ground.

He got up and stood up, walked quickly to the side of the Dan furnace, and looked down, only to see a black-brown object at the bottom of the Dan furnace, exuding a burnt smell.

Seeing this, Shi Yue shook his head, the first alchemy failed.

He carefully recalled that the steps of alchemy were strictly in accordance with the steps recorded in the classics, and if there was a problem, it was estimated that there was a problem with the control time of the flame.

Thinking about this, Shi Yue dumped the black waste at the bottom of the furnace.

Shi Yue took out a fist-sized piece of rice, peeled off the shell, cleaned it and ground it into powder, then took out a blood qi fruit and a violet apricot, cleaned it, and cut off the flesh.

After the lid was closed, Shi Yue pinched the trick with both hands, and the six magic duels hit the six dragon heads one after another, and each of the six dragon heads spewed out a finger-thick red flame, gathering at the bottom of the Dan furnace.

Time passed little by little, two quarters of an hour passed, and it seemed that it was about to succeed, and at the last moment, only a "bang" was heard, and a pungent burnt smell came from the Dan furnace.

Seeing this, Shi Yue frowned, and the second alchemy also failed.

After resting for a while and recovering his mana, Shi Yue began his third alchemy.

He took out a copy of the ingredients, processed them, poured them into the Dan furnace, and then manipulated the dragon's head to spray flames.

This time, it still failed.

Seeing this, Shi Yue's face showed a look of determination, he didn't believe it, he couldn't even refine a furnace of Bigu Dan, he took out another material and began to refine.

The fourth time also ended in failure.

The fifth time still failed.

The sixth time was still unsuccessful.

······

A day later, a muffled "bang" came from the alchemy room, and the Dan furnace in front of Shi Yue's eyes, which was flooded by the rolling flames, emitted a puff of black smoke again, wafting out a smell of burning.

Seeing this, Shi Yue's face suddenly sank, and after sighing lightly, the law in his hand was closed, and the flames around the Dan furnace suddenly collapsed.

Shi Yue didn't know how many times he had failed, the Blood Qi Fruit and the Violet Apricot had all been used up, and he hadn't even refined a Bigu Pill.

Although it has long been stated in the classics that it is normal for beginners to fail hundreds of times, Shi Yue was still hit hard when he really faced such a situation.

From the excitement at the beginning, it has become extremely frustrating now.

The Blood Qi Fruit and the Violet Apricot were used up, and it was impossible for him to continue alchemy now.

After the frustration, Shi Yue slowly regained his composure, this alchemy failed, there are many problems, in addition to the flame control accident, it also has a lot to do with the processing of materials, he is going to find a few alchemy classics from the Tibetan Scripture Pavilion to take a look, or find an alchemist to ask for advice, and then consider reopening the furnace for alchemy.

You must know that alchemy consumes all the spirit stones of white flowers!

As soon as he thought that he had wasted dozens of spirit stones, Shi Yue felt distressed.

He stood up, the square token in his hand flickered, and a red light shot out and disappeared into the door.

With a "bang", the door opened, and Shi Yue walked out with his feet raised.

"Hey, junior brother, it's been less than two days since you came out so soon," the man in red who was guarding outside said with some surprise when he saw Wang Changsheng.

"The materials are used up, and the forbidden token is returned to you. Shi Yue explained, and after returning the square token to the man in red, he raised his feet and walked towards the way he came.

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(Entangled in the chapter name of this chapter, the original chapter name is failure!, but after thinking about it, if you fail to write, then everyone must know that this chapter is an alchemy failure, if there is no suspense and fun, wouldn't the Taoist friends skip it, and with the attitude of being responsible for the Taoist friends, I changed it to a trial.) Hehe!o(╯□╰)o)