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

The outer flames burned away all the lung qi in Song You's lungs. He let out a long breath, ending his three-hour cultivation session.

He had been staying at the pharmacy for three days, during which time he practiced making the Lung-Clearing Powder fourteen times. After each batch was made, he reflected on and deduced its effects, and used his spare time to cultivate and restore his cultivation level.

If Brother Jiang Yang were still alive, he would have found that Song You had already reached the threshold of the fifth-grade lower level, which was a few steps less than he had said.

"It's time." Song You opened his eyes and exhaled the outer flame of the heater, realizing that the opportunity was right in front of him.

The yellow coal emitted heat, raising the temperature of the entire medicine furnace. Song You skillfully adjusted each layer to the appropriate temperature, then successively added the snake-eating grass and withered bark obtained from the pharmacy. After the medicinal liquid from the two came into contact, the yellow soil was added, and the yellow soil instantly dispersed into dense particles.

There was only a piece of yellow powder at the bottom of the furnace, but Song You was very happy because he could smell that this lung-clearing powder had reached the fifth grade of inferior quality.

After taking the prepared cloth and wrapping it up, Song You examined it carefully. Compared to the inferior gray-yellow product, the yellow of this fifth-grade inferior product was much brighter, and it was obvious that the quality was better.

Song You picked up a small pinch with his fingers and swallowed it. The feeling of friction in his throat was gone, and the feedback from his lungs immediately appeared.

The cool sensation spread throughout his lungs, making him feel much more relaxed. This effect only lasted for a quarter of an hour before disappearing. However, Song You had only taken a small amount, and the last time he ate a whole packet of inferior products, it only lasted for a quarter of an hour.

Moreover, inferior products work slower and are less effective; no matter what, they cannot compare to the quality of the genuine products.

A relaxed smile appeared on Song You's face. Hard work pays off, and his diligent practice has been rewarded. Moreover, this is where his talent lies.

He was an ordinary person from childhood to adulthood, until he went to university to study medicine and showed his talent. He learned medical knowledge faster than others, and by graduation he was among the top students in his class.

Song You carefully wrapped the lung-clearing powder and placed it on the tray. He didn't intend to give the package to Shen Lu. High-quality lung-clearing powder has a clear value in the pharmacy and cannot be given away for free. The wild snake-eating grass with its mottled medicinal properties is not enough to exchange for it.

Song You sat upright in front of the medicine furnace, wiping the powder off his hands. Over the past three days, he had carefully read the pharmacy's regulations. He was required to provide the temple with three packets of high-quality medicinal food each month, and in return, he would receive a corresponding salary. He could be in arrears for up to three months. After the three packets, he could choose whether to submit them again. This was a preferential treatment given to the elder disciples by the Po Cang Temple. Other disciples who could brew medicine were required to submit at least seventeen packets.

Even so, many disciples still yearn for this. Only by doing good work can one earn a salary, and only by having resources can one cultivate and survive faster. The more valuable you are in the Soul Treasury Temple, the more privileges you will receive.

Song You believed his task was not difficult; he only needed to submit three doses of Qingfei San (a traditional Chinese medicine formula). Even if he only brewed one dose a day, he could finish it in three days. However, Song You could not do that. He needed to improve his efficiency and submit more Qingfei San to exchange for the Ning Shen Yao Nang (another traditional Chinese medicine formula).

Unfortunately, the highest grade of the Lung-Clearing Powder can only be made into a fifth-grade low-level product. Otherwise, he could use it to practice his techniques more. Other medicinal diets require more lung fire cultivation, and if the strength is insufficient, the furnace will explode halfway through, which would be dangerous. Song You composed himself and decided to master the Lung-Clearing Powder to a high-grade level before improving his cultivation.

After confirming that no one was around, Song You quickly went to the World of Returning Light to replenish his nutrition, constantly consuming lung qi to improve his cultivation. Having already gone through this stage, Song You was very skilled at it. His outer flames recovered to a thickness of one and a half inches, and he needed twenty inches to advance to the mid-stage of Firewood.

The outer flame envelops the inner flame. When you cultivate to this level, the outer flame will become extremely large, and the difficulty of increasing its thickness will also increase exponentially.

While he was cultivating, Song You heard familiar footsteps. As a powerful person, Jia Chunfang never concealed her arrival, so Song You immediately tidied up the room.

Without keeping Jia Chunfang waiting any longer, Song You took the initiative to open the door and greet her. Upon seeing her thin and frail figure, he immediately bowed respectfully and said, "Welcome, Master."

"Hmm, how has your recovery been these past few days, my disciple?" Jia Chunfang walked past Song You and sat down on her own.

Song You straightened up, not daring to hide anything, and picked up the lung-clearing powder from the tray: "Master, look, I just brewed a high-grade medicinal meal today."

Jia Chunfang took it and smelled it: "Not bad, it is indeed a fifth-grade low-level product. The talent is not bad. I tried twenty times before I succeeded. How many times did you try?"

Song You's heart stirred: "This disciple is not as good as Master. It took me more than thirty tries to even get the basics down."

Jia Chunfang let out a chuckle and tapped her fingers on the floor: "Not bad. You do have a talent for brewing medicine, but you should also know that what I need you to do is sew up skin."

Song You immediately kowtowed: "Disciple knows what Master needs me to do. Disciple saw the formula for the Mind-Concentrating Medicine Pouch on the pharmacy's exchange list and wants to exchange it for the Lung-Clearing Powder to better serve Master."

Jia Chunfang stared at Song You for a long time without saying a word. Song You did not look up. After a moment, he felt his shoulders being lifted. Jia Chunfang looked at Song You with her cloudy eyes: "You did a good job. I only care about the results. Your leather quality will double. I will give you seven days to make a fifth-grade low-quality leather."

"Brother Jiang Yang!" Jia Chunfang called out loudly, and Brother Jiang Yang walked out directly from a room in the distance.

Jiang Yangge bowed his head and said, "Elder, please give your orders."

"How much leather is left in the pharmacy?" Jia Chunfang asked. "Song You can have an unlimited supply as long as he wants to exchange it."

Seeing that Song You showed no dissatisfaction, he grinned, revealing his ugly teeth: "If you can't afford to pay it back, you can come to me. The price is the same as last time, with interest compounded on the thirteenth."

Song You felt a chill run down his spine. He didn't know what it meant to owe money to others, but he knew that owing money to Jia Chunfang would definitely not end well: "This disciple will do his utmost to fulfill the task assigned by Master."

Jiang Yangge stood there hesitant to speak, looking somewhat caught in a dilemma. Jia Chunfang noticed him and her face darkened: "Has something happened at the pharmacy again? Just say what you have to say."

Seeing that Jia Chunfang was now in a normal mental state, Jiang Yangge breathed a sigh of relief and said cautiously, "Reporting to the elder, there is nothing special in the pharmacy. It's just that recently the temple has been giving out more tasks, and many disciples want to exchange for the things they want, so the pharmacy's resources are in short supply, especially leather, because the medicine pouches have a high exchange value and are being consumed even faster."

"Didn't the temple replenish it in time?" Jia Chunfang asked, her expression unchanged.

Jiang Yangge explained with a forced smile, "The amount of supplements provided by the temple has been less than before recently, and there haven't been any additional supplements."

"Stop supplying Liu Xiang and his apprentice. I'll take Song You to get the materials." After giving the instructions, Jia Chunfang picked up Song You and rushed off without waiting for Jiang Yangge's reply.

Song You didn't resist, following Jia Chunfang as they swept across the rooftops. After adjusting to the speed, he cautiously asked, "Master, where are we going?"

Jia Chunfang turned to look at Song You, a cryptic smile on her face: "Go to my fiefdom."