The Immortal of Plague begins by establishing the root of lung fire.

Following the method described in the book, Song Youkuai increased the speed of decocting the medicine to the maximum, but he found that the amount of lung-clearing powder he produced never increased.

I just had an inspiration and tried it out, and to my surprise, it actually worked! I managed to brew five portions of the powder in one go. It seems that the book only provides general quantities and instructions; to achieve the best results, you need to figure it out yourself.

Song You took out a strip of cloth, wrapped it up, and smelled it. The first three were fine, but the fourth one smelled a bit off. It was clear that it had become a defective product and there was no way to salvage it.

He quickly picked up the fifth portion and looked at it. Song You felt relieved. There was no problem with this portion. The problem was that the yellow soil was added too hastily at the end, which caused a problem when the mixture was finally fused.

Song You was in high spirits. Once he had learned from his experience, things would be much easier. He spit out the outer flames to reignite the furnace, and the yellow coal released heat again.

After a long period of decocting medicine, Song You's control over the outer flames became more refined, enabling him to precisely ignite a piece of buried coal. As his cultivation level recovered, Song You's mind became increasingly sharp, and this control would become even stronger.

There wasn't much yellow coal left in the furnace, but it could still be used a few more times. As the furnace heated up, Song You began to brew the medicine. The yellow flames in the furnace reflected on his face. Finally, the crucial moment arrived, and Song You carefully added enough yellow clay.

With anticipation, Song You opened the medicine furnace and found five piles of medicinal powder inside. He breathed a sigh of relief; his intuition had been right. He might not have been so confident about other things, but he had enough confidence in this matter.

Song Youyi recalled the subtle problems he noticed during the decoction process, and finally went through them in his mind. He came up with a general plan, and after comparing it with the medicine book, he found that it did not deviate from the plan given in general.

He was ready, and the outer flame in his chest cavity was sufficient. He lit the yellow coal again. Just then, several loud noises came from outside the pharmacy. Even with the soundproofing of the room, they still disturbed Song You's brewing process.

Song You listened carefully to what was happening outside and realized that it was far from his medicine room and shouldn't affect this area.

With that in mind, Song You felt relieved and quickly focused on the cooking process. He was very skilled throughout, and after making some minor adjustments, the cooking time was shortened considerably.

Just a quarter of an hour later, Song You finished brewing the lung-clearing powder, gently opened the medicine stove, and found ten lung-clearing powders lying quietly at the bottom of the stove.

I simply adjusted the parts that felt off, and I actually achieved the perfect state described in the medicine book, brewing a five-tenths grade of low-grade lung-clearing powder in a quarter of an hour.

Could I really be a peerless genius in this field?

Song You calmed the rise and fall of his chest, forcing himself to calm down. It must be that the enhanced mental strength had improved his talent, which was a good thing.

Song You took out a cloth strip and wrapped all the powder in it. He looked at the bottom of the furnace and saw that the yellow coal had been used up and had all turned black.

He looked outside and saw that Shen Lu was not outside. She must have gone back to the outer courtyard of the pharmacy to work. Although Shen Lu mainly served Song You and had to do some chores in the outer courtyard, with Song You around, she was assigned some easy tasks, which allowed her to save some energy for cultivation and study at night.

Song You got up and went outside. Without the soundproofing of the room, he heard a series of banging sounds coming from afar. The sounds had been there before the medicine was brewed, and they were still going on.

When he arrived at the outer courtyard of the pharmacy, he saw Shen Lu pushing a cart to transport medicinal herbs. She was not doing the heavy work as before. The disciples around her were also doing their own things, and there was nothing unusual about it.

The commotion came from the pharmacy entrance. Shen Lu also noticed Song You, put down the cart, and jogged over: "Senior brother, are you out of herbs? I'll go get some right away."

"We've run out of coal, so let's pick up the medicinal herbs while we're at it," Song You nodded, pointing outside the door. "By the way, what's going on at the door?"

Upon hearing this question, Shen Lu looked around and whispered to Song You, "It's those disciples who were chased away by the elders last time. They came to ask for some kind of cultivator ginseng, but Senior Brother Jiang stopped them at the door."

"So that's how it is. Where did they get the guts?" Song You realized that these people were really bold. They almost got caught here last time, and now they still dare to ask for cultivator ginseng.

Shen Lu shook her head: "I don't know."

Song You didn't expect Shen Lu to answer. She didn't even know Mei Chong's name and had no idea about the inside story: "There's too much stuff. Why don't you take a cart and get busy? Also, tidy up the room a bit more."

"Okay, I'll go now." Shen Lu pushed a small cart out from the corner, and no one dared to say anything.

As Song You approached the pharmacy door, he saw the scene outside. At that moment, Jiang Yangge was confronting Mei Chong and his group with several disciples.

Mei Chong's face darkened, his eyes practically spitting fire: "Brother Jiang Yang, what do you mean?"

Jiang Yangge did not back down at all, but instead took two steps forward: "Your pharmacy supplies have been stopped by the elders, so you don't need to come anymore."

"This is outrageous!" Mei Chong clenched his fists. "You need to understand, my not attacking doesn't mean I'm afraid of you. Things are different now. If I were to get serious today, do you really think you could withstand it?"

Jiang Yangge remained unmoved, simply shaking his head: "I was just following the elder's orders. As for the cultivator's ginseng, you should know that this is compensation."

So that's what happened. After Song You figured out the situation, Mei Chong came to ask for the cultivator's ginseng, but not only did he fail to get it, he also found that his supply had been cut off. Enraged, he refused to leave.

Seeing that Brother Jiang had handled the situation well and seemed to be alright, Song You felt reassured and decided not to rush into action, as he had more important things to do.

Song You turned back and walked in the direction he came from. Brother Jiang Yang was indeed responsible and capable. The other party wanted the Qi Refining Technique, probably because he didn't know that this thing would turn into a wild beast after cultivation.

Jia Chunfang said last time that if this matter were made public, the person who spoke of it would be plagued by bad luck, but if they saw it with their own eyes and then told others, they would not be affected. She couldn't say it directly, but she could hint at it. She believed that with Jiang Yangge's intelligence, he would understand.

Back in her medicine room, the herbs were all placed in their proper places. Shen Lu was still adding coal to the furnace. Song You glanced at her and noticed that she still didn't have much flesh on her face.

After she finished her work, Song You took out a small piece of fried dough from his salary and tore it in half: "Eat this."

Shen Lu looked up and saw that it was a fried dough cake. She was so shocked that she covered her mouth with both hands. After realizing what was happening, she shook her head repeatedly: "No, senior brother, this is too precious. I can't accept it."

To be honest, these fried dough sticks were a bit too oily, not as good as the carefully prepared food in the world of returning to light. Song You was getting a little tired of them.

In order not to be noticed, Song You only gave her a small portion. Seeing that Shen Lu was still hesitating, Song You directly stuffed it into her mouth. Shen Lu swallowed it without caring about the mess, and her face was covered with yellow coal stains.

Shen Lu suddenly gasped for breath. Song You was startled, wondering if she was poisoned. Upon closer inspection, he realized she was choking. He went over to help her catch her breath.

"Thank you, senior brother. I've only ever seen them eat this at home." Shen Lu lowered her head, so her expression couldn't be seen.

Song You looked helplessly at Shen Lu in front of him. Abandoned by her family, lacking talent, and almost choking to death while eating a pancake, it was truly pitiful for her. "Alright, if you want to repay me, then do your job properly."

"Senior brother." Shen Lu raised her head, sobbing and covering her eyes, "I don't know how to say it, I just hope you won't die."

Is she crying? This is so troublesome. Song You straightened his face and said, "Fine, I won't die even if you die."

After seeing Shen Lu off, Song Youping calmed down. He had already grasped the key, and now it was time to focus on brewing.

Two days later at midnight, looking at the mountain of lung-clearing powder in front of him, Song You finally felt relieved.