With the help of Lan Jiang, Chang Yue and others, Ye Feiyan prepared the second jar of medicinal soup, and then asked Chang Yue to send the medicinal soup to the room in the middle.

Looking at the busy Ye Feiyan, Gu Shaoyuan, who had settled down, no longer asked any questions, but just followed closely behind Ye Feiyan, carefully observing her operation.

Back in the middle room, Ye Feiyan, with the help of Junlan, took out the medicine stove and set it up, only to find that she seemed to have forgotten to buy charcoal from outside.

"Gu Gongzi, I'm ready to start alchemy, but we were so careless that we forgot to buy charcoal, and I hope Gu Gongzi can lend us some."

Gu Shaoyuan was carefully looking at the 'metal box' placed on the table, full of questions, and when he heard Ye Feiyan's words, he raised his head and rushed to bring snacks and tea, and then waited outside for the shopkeeper Yu and ordered: "Go and open the charcoal room and bring some charcoal over." ”

The shopkeeper Yu, who was full of curiosity but only saw a little fur, responded with a depressed face, and walked towards the larger room in the southeast corner of the medicine garden.

Gu Shaoyuan glanced around the room, and finally returned to the 'metal box' on the table, "Miss Ling, there is no medicine furnace in this room, even if you take charcoal, you can't refine medicine pills." ”

"Boy, you don't understand this, this is the little girl's alchemy furnace."

Gu Yifeng pointed to the medicine furnace on the table with a snorting face, although he didn't know how to use this 'metal box' to refine the elixir, but this was the medicine refining furnace of his 'grandson' little girl.

Gu Shaoyuan stood up, his eyes approaching the 'metal box', "This box can really refine pills?" ”

Thinking about the bulky demon refining furnaces placed in the rooms on the east and south sides of the medicine garden, Gu Shaoyuan really couldn't imagine how the small box in front of him could refine the pills.

"Boy, don't worry, you'll know in a moment if this box can refine pills."

Although Gu Yifeng said so, the urgency in his heart was not inferior to Gu Shaoyuan, thinking about the pill that was only the size of a bean grain, how could he not be excited?

Gu Shaoyuan suppressed the eagerness in his heart, and swept the snacks and tea that had been moved to the small round table in the corner, "Miss Ling, Grandpa Ling, and Master Ling, why don't you wait for the charcoal for this time, and use some snacks first." ”

After Gu Shaoyuan said this, Ye Feiyan really felt that her stomach was a little empty, so she walked to the small round table and took the plate containing dim sum directly to the square table.

"Grandpa, eldest brother, eat some first, and when the elixir refining is completed, I'm afraid it's going to be late at night."

Gu Shaoyuan looked at the 'metal box' in front of him, and then at the two halves of the medicinal soup placed on the ground, in his mind, he was afraid that it might not be able to be refined overnight.

When the shopkeeper carried a bucket of charcoal into the house, Ye Feiyan had already put the snack plate back on the small round table.

"Miss Ling, I'm afraid this bucket of charcoal is not enough, but do you want to let Shopkeeper Yu transport some more?"

Ye Feiyan shook her head, "It should be enough." ”

Gu Shaoyuan once again suppressed the doubts in his heart, turned around and whispered a few words to the shopkeeper.

When he turned around, he saw that Ye Feiyan had already taken out all the shelves in the medicine stove and was carefully adding the medicinal soup.

Looking at the strange metal shelves, Gu Shaoyuan couldn't tell what kind of feelings he felt in his heart.

He stared earnestly at the movements of Ye Feiyan's hand and did not make any more inquiries, because he finally understood that even if he asked, Ye Feiyan gave him an answer,

He still couldn't figure it out.

Ye Feiyan poured the medicinal soup into the mold one by one, closed the lid on the upper layer, and then put the mold holder into the furnace.

Next, the swallow lays charcoal on the upper and lower charcoal racks and lights them.

At this time, Ye Feiyan's expression was serious, and no sounds or movements around her could disturb her.

She adjusted the position of the upper and lower charcoal racks and the size of the mold.

Gu Yifeng and Gu Shaoyuan tried not to make any sound, and their eyes watched Ye Feiyan's movements without blinking.

Jun Lan took out a silk handkerchief and wiped the fine sweat oozing from her forehead and the tip of her nose for Ye Feiyan from time to time.

Half an hour later, the first batch of pills the size of beans came out.

Ye Feiyan poured the elixir onto a clean white cloth laid on the tabletop, and then continued to pour the medicinal soup into the mold.

Gu Yifeng looked at the tan, bean-like elixir, and his face was full of smiles that he couldn't hide, "Little girl, this elixir is so beautiful, it must be delicious to eat." ”

The corners of Ye Feiyan's mouth twitched, and she put the mold that had been filled with medicinal soup and covered with a lid into the medicine stove, "Grandpa, no matter how delicious the pill is, it is still medicine, not candy." ”

The charcoal has been burned steadily, so as long as after a while, adjust the height of the charcoal rack up and down to meet the temperature requirements, although the size of the mold has to be adjusted from time to time, but Ye Feiyan is still much easier.

"Miss Ling, I've been hearing you talk about pills and pills, I'm very surprised, it turns out that what you have refined is such a small pill, and this hardness is really like beans."

Speaking of this, Gu Shaoyuan's mind moved, and he couldn't help but reach out to test the temperature near the charcoal rack, "I understand, why the pill has become such a hard pill is because the temperature here is extremely high, and all the water in the medicinal soup has been removed." ”

Ye Feiyan smiled approvingly at Gu Shaoyuan, "It is precisely for this reason that the original medicine furnace used is large, and the charcoal that was lit cannot be directly roasted onto the container containing the medicinal soup, so that the medicinal soup only loses part of its water, and the refined pill is relatively large in size, and the hardness is not enough. ”

Gu Shaoyuan thought thoughtfully, "Miss Ling, if you make a large medicine furnace according to your medicine furnace, wouldn't that be able to refine the pill faster?" ”

Ye Feiyan smiled and shook her head, "Did Gu Gongzi find out just now that I kept adjusting the height of this shelf where the charcoal was placed, and used my hands to probe the temperature near the mold from time to time?" ”

Gu Shaoyuan nodded, "Gu Mou saw clearly just now that Miss Ling was not idle. ”

"If you want to refine this kind of elixir with the right hardness and size, the temperature near the mold is not high enough, but the temperature must be kept within a range, neither too high nor too low, too high is easy to scorch the outside of the elixir, and there is still moisture inside, and if it is too low, it will not be able to discharge the water."

Gu Shao nodded clearly, "Miss Ling, apart from testing the temperature with your hands, is there any other way?" ”

Ye Feiyan pointed to a few small tubes on the side of the medicine stove, "You can fill water into these tubes, and the height of the water is based on the line carved on the outside, when the water surface in all the pipes rises to the nozzle, then the temperature around the mold is suitable." ”

Seeing that Gu Shaoyuan seemed to still have questions, Ye Feiyan added: "If the amount of pills refined is large, then I will definitely not be able to bear it alone, so these side water pipes are prepared for people who can't judge whether the temperature is suitable through the touch of their hands." ”

(. = )