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

This Concentration Skin is different from the ordinary skins that were sewn before. From Song You's perspective, the Concentration Skin has a sense of being a whole, and the cold air emanating from it cannot be found to come from anywhere.

This is the flawless performance described in the book. Song You successfully made a fifth-grade low-quality medicine bag in just half a night.

For others, manipulating bone needles to sew up all the needles steadily is very difficult, but for Song You, it is just a basic skill.

Sewing leather was simpler than he had imagined. He only needed to master the position and order of the needle insertion to complete the task. However, Song You knew that this was only a basic fifth-grade low-quality sewing. High-grade leather would definitely not be so simple.

As he expected, the coldness emanating from the skin activated its properties. After adding suitable medicinal ingredients, the properties of the two would become complementary, allowing them to exert their proper effects.

Song You put away the Concentration Skin. Since things had come to this point, he might as well just make the medicine bag directly.

After resting and recovering his lung qi, Song You lit the medicine stove. Watching the yellow coal in the stove emit heat, Song You suddenly realized that the temple's medicine preparation relied heavily on lung fire. Nothing else could ignite the yellow coal; only lung fire could generate heat. So what did other non-fire-based temples and sects rely on to prepare medicine? It must not be that all places used the same method.

Once the stove was fully heated, Song You put aside these unnecessary thoughts and added half an ounce of Viola yedoensis, three spoonfuls of white fungus, a section of boiled frog leg, and a small piece of pork.

With Song You's experience as a guide, Song You made rapid progress, accurately identifying the precise temperature for each step, and eventually even surpassing the methods described in the book.

After thirteen unsuccessful attempts, a pile of greenish-blue slime appeared at the bottom of the furnace. Song You quickly took out a wolf skin and wrapped it around the medicine carrier, sewing it according to the previous steps. Although there was something on the skin, it was very sticky, and Song You could completely overcome this change.

It took him longer than stitching a single piece of leather; it took him two incense sticks to finally finish stitching the sculpted skin.

The moment the suture was successfully completed, the medicine carrier and the skin bag produced a wonderful reaction. A cool breeze blew out of the medicine bag, causing the paper on the window to flutter slightly.

Song You couldn't help but get excited. The strange phenomenon of the medicine pouch showed no signs of stopping, which meant that the sewing was successful. The mind-concentrating medicine pouch he had been looking forward to for so long was finally in front of him.

Holding the medicine pouch in his hands, he channeled his own aura into it. The pouch was disturbed by this aura, and the cool breeze gradually weakened and eventually disappeared until there were no more unusual signs around.

Song You also felt the effects of the medicine pouch at this moment. Many of the chaotic thoughts in his mind disappeared, and his concentration improved when doing things. As mentioned on the list, this improvement reached 20-30%. This effect only worked for Song You, and the people around him could not feel it at all.

The time I spent on it was definitely worthwhile, but it's a pity that the medicine pouch only lasts for ten days. As that time approaches, the medicine pouch's effectiveness will greatly decrease, and eventually it will be completely useless.

This is understandable, as the medicinal ingredients are working constantly, and being able to last for ten days is already the result of careful preparation.

Song You tried to brew the lung-clearing powder by spitting out outer flames, and the efficiency increased by 20%. This effect, accumulated over the years, is quite remarkable.

Now that Song You has completed the task assigned by Jia Chunfang, he has no intention of reporting directly to Jia Chunfang. Taking advantage of the time and bonuses he has, Song You needs to focus on restoring his cultivation, especially the Henghe Flame Silk.

Without further ado, Song You began his cultivation, leaving the clutter in the room to Shen Lu, who arrived at dawn, to tidy up.

As the mind-concentrating medicine pouch continued to work, Song You's control over the lung fire became increasingly refined. In the same amount of time, the outer flames devoured an additional ten percent of the lung qi, a remarkable improvement. The pleasure of this progress overwhelmed the burning pain of the lung fire, allowing him to immerse himself in cultivation.

Jia Chunfang didn't come to the pharmacy for the next few days, and Song You didn't pay attention to it, focusing on his cultivation.

Song You let out a long breath. The day's cultivation was over. With sufficient replenishment, he restored the thickness of his outer flame to two inches, which was enough to handle some situations.

Just as he was preparing to press on, he finally heard familiar footsteps outside the door. Song You's heart sank. He figured Jia Chunfang had probably come to check on the results and take him to do some side jobs.

Song You stepped forward to open the door, and Jia Chunfang was walking towards him. He hurriedly went forward to greet her, saying, "Welcome, Master."

"Hmm, how's the thing I asked you to make?" Jia Chunfang's expression wasn't very good, and she sat upright on the ground, coughing.

Song You took the mind-calming medicine pouch from his body and handed it to Jia Chunfang: "Disciple has stayed up for several days and nights and barely managed to make a shape. I hope Master is satisfied."

"Looks good." Jia Chunfang picked up the medicine pouch and examined it, deliberately rubbing the outer skin. She raised her eyebrows and said, "A fifth-grade, low-level medicine. You actually managed to do it."

"It's all thanks to Master's guidance." Song You bowed and paid his respects.

Jia Chunfang chuckled and said, "If I taught you, you could do even better, but you just don't want to."

Song You didn't say much, and this was a difficult question to answer.

Jia Chunfang didn't dwell on the matter. After staring at Song You for a while, she asked, "Song You, what did you say to Brother Jiang Yang?"

Song You broke out in a cold sweat. Without hiding anything, he recounted the whole scene, concluding, "This disciple was also confused for a moment."

"You're really confused." Jia Chunfang coughed violently a few times. "You didn't seize this opportunity yourself, yet you're blocking other people's path. If I hadn't discovered this opportunity, do you think you would have had a good ending?"

"This disciple knows his mistake." This was the only answer Song You could give. He really hadn't expected this. He had chosen to enter the pharmacy on his own initiative and hadn't used any Qi-refining techniques. As the head disciple of the pharmacy, Jiang Yangge would have come into contact with him. It was entirely possible that the techniques Song You obtained from Jiang Yangjiao had ended up with Jiang Yangge.

It all happened so naturally, with no one pulling any strings behind the scenes. In the end, Jiang Yangge drew in Qi and transformed into a wild beast. It was a perfect game of chess.

No wonder Jia Chunfang was so angry. Such an opportunity only comes once every few years. He probably didn't expect Song You to hint at this to Jiang Yangge, thus ruining what was supposed to be a natural progression.

Song You felt a chill run down his spine. Yes, he had escaped death back then, but the people watching the game were likely still focused on the endgame. If he disrupted the layout again and again, he would inevitably attract their attention again and become a dead piece on the board.

His mind raced, trying to come up with a response: "This disciple is only thinking of the brotherhood between you, Master, and Elder Zhongzao; I simply cannot bear it."

Upon hearing Song You's words, Jia Chunfang's withered body froze for a moment, then she sighed, "Silly disciple, how could you be so sentimental like me? I have brought great harm to the temple."

Song You bowed again, saying, "Please forgive me, Master."

"Get up. It's my fault for being too kind." Jia Chunfang's cough suddenly became more intense, then she gasped for breath as if she remembered something. "I've been too good to my junior brother. Even now, I don't want him to die alone. I want to bury him with Master."