"Isn't it, will you test me so soon?" Luo Xu scratched his head.

Ling'er said with a smile: "As a monk of the Danding faction, these are common sense, which should be memorized, and please ask the master to answer me, otherwise I will not take the liberty of opening the furnace to alchemy." ”

"Don't think I can't answer. ”

Luo Xu touched his chin and frowned and pondered for a while, then slowly spoke: "I need three coins for red heart grass, six coins for Zhiming, and then one coin for the snake venom of the green-tailed snake, am I right?"

"Hmm. Ling'er nodded with satisfaction, and asked again, "If there is no snake venom of the green-tailed snake, how can I refine the Heart Pill?"

"It can be refined with aluminite. Luo Xu remembered this very clearly and blurted out.

"Very good, then let's start by refining the Heart Warming Pill. Ling'er smiled again and asked, "Please answer the master what is the effect of my Heart Pill." ”

"Lao Ziji's codex says very clearly, saying that this thing is an evil thing, which can confuse people's minds, so as to achieve the purpose of controlling a person, but the effect of the medicine cannot last long. Luo Xu replied quickly.

"This host remembers it very well. Ling'er smiled: "Let's go, let's open the furnace first." ”

When I came to the alchemy room, the huge Dan furnace more than three zhang high appeared in front of me again, and it was spectacular to set up such a big guy to set up a fire.

"What should I do?" Luo Xu asked, "I don't see any charcoal anywhere." ”

"Alchemy is not cooking, master, the alchemy furnace is not charcoal. Ling'er smiled.

"If you don't burn charcoal, then what will you burn? it won't be firewood, right?" Luo Xu said in surprise.

"What's more!" Ling'er explained, "Master, the heat generated by the burning of charcoal and firewood you said is too low, they are the second and worst fuels, and they can't be used for alchemy at all, we need to use fire spar for alchemy!"

"Fire Crystal, what is Fire Crystal?" Luo Xu's eyes seemed to open a new world, everything was unknown, so there were many problems.

"You see, that's it. ”

Ling'er stretched out her hand and pulled open a drawer-like thing placed in the Dan furnace, in which a few fire crystals were placed.

"This thing is so beautiful!"

The fire crystal is transparent on the outside, but each fire crystal is red on the inside, like a raging flame, so it looks particularly beautiful.

"Really?" Ling'er had seen a lot, but she didn't find anything beautiful about the fire crystal. She took out a small piece of fire crystal from it and placed it in the fuel dish at the bottom of the Dan furnace.

"Is just such a small piece enough for alchemy?" Luo Xu asked puzzled.

"yes. Ling'er smiled: "Fire spar is not an ordinary fuel, so a small piece is enough to burn for many days." ”

"My good girl, it can burn for many days!" Luo Xu really didn't expect that such a piece of fire crystal the size of a bull's eye bead could provide heat for the Dan furnace for many days.

After Ling'er put the fire crystal into the fuel dish, she flicked her fingers, only to see a green light shoot out from her fingertips, hitting the small fire crystal, and the fire crystal immediately burned.

"Let's go, let the Dan furnace preheat first, and we'll go get the materials. With that, Ling'er put his arm on Luo Xu's shoulder, and the two disappeared out of thin air again, and when they reappeared, they had already arrived at the place where the materials were stored.

"Master, you can choose the materials. Ling'er hugged her arms, apparently planning to stand by and watch, and would not come up to help.

Luo Xu knew that this was a test for him, and silently recited the names of the materials needed for red heart grass, zhiming flower, and green-tailed snake.

The materials here are obviously all leftovers discarded by Ziji Zhenren back then, piled up randomly, and to pick out the materials you need from this messy pile, you need not only eyesight, but also an understanding of the materials.

In Zijizhen's codex, he introduced the properties of each material. The main characteristic of red heart grass is that the leaves are red, and each piece is in the shape of a "heart"; Zhiming flower mainly looks at the flowers, its flowers are blue, and there are many white dots on it; as for the snake venom of the green-tailed snake, if you can't find it, you can use alum stone to refine.

After looking for a while, Luo Xu found the Good Heart Grass and Zhi Minghua, judging from Ling'er's expression, he knew that what he was looking for was right.

"I can't find the venom of the greentailed snake, I think there may not be it here, alum stone can be refined, or use alum stone instead, right?"

Ling'er smiled: "This is okay, then you go and pick the alum stone, do you remember what the characteristics of the alum stone are?"

"The surface is gray-white, with black dots on the outside, am I right?" Luo Xu glanced back at Ling'er.

"Hmm. The master learns really fast!" Ling'er clapped her hands and laughed.

Soon, Luo Xu found a piece of alum stone that was not too big or small from a pile of rubble, "Is this piece enough?"

"It's enough for us to refine ten Heart Pills. Ling'er responded.

The materials had been found, and the two went back to the alchemy room. The Dan furnace had been burning for a while, and the temperature of the entire alchemy room had risen. As soon as he entered, Luo Xu felt the heat wave coming to his face.

"What should I do next?" Luo Xu asked, "According to the process, the green-tailed snake venom should be refined first, but how to operate it?"

Ling'er easily lifted up a piece of alum stone, and after a pause, the whole person flew up, slowly rose to the top, and put the alum stone into the Dan furnace.

"Refining is very simple, we just need to put the alum stone into the Dan furnace, and the Dan furnace will automatically collect various elements. ”

"It's so amazing!" Luo Xu was slightly taken aback.

"yes. The old master's Dan furnace is a treasure of the Danding faction. If it was an ordinary Dan furnace, it would be much more troublesome to refine. Ling'er smiled.

"So what are we going to do now?" Luo Xu asked.

"Sit back and wait. ”

After speaking, Ling'er had already sat down cross-legged beside the Dan furnace. Luo Xu followed her example and also sat down next to the Dan furnace.

The heat wave was rising, Ling'er seemed to have long been used to it, and Luo Xu was already wet and cold, constantly wiping the beads of sweat on his head.

"Master, the Blood Cleansing Pill has actually taken effect in your body!"

Ling'er saw the clue from Luo Xu's sweat, she had eyesight that ordinary people didn't have, and she saw something strange at a glance.

"I don't know. Luo Xu looked dazed.

Ling'er swept her eyebrows over Luo Xu's body, only to know that the Blood Clearing Pill had taken effect not long after taking it a few days ago.

"The master's body is far stronger than I imagined!" Ling'er said secretly in her heart, "Maybe I can teach him the cultivation method." ”

"Ling'er, why are you distracted? Could it be that there is a problem with alchemy?" Luo Xu asked when he saw this.

Ling'er came back to her senses and said with a smile: "Master, I'm thinking about something. Let's concentrate on alchemy, and I'll tell you later. ”