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

"Alright, remember what I say from now on." Jia Chunfang's emotions came and went quickly. He looked at Song You and said, "Did you exchange all your minor skills for Lung-Clearing Powder?"

Song You breathed a sigh of relief: "That's right, a total of nine hundred portions."

"Old Ghost Tong told me to tell you not to associate with him anymore." Jia Chunfang had a strange expression on her face. "The Lung-Clearing Powder was originally just to make up the numbers."

That's true. It's true that when skill levels are the same, others will exchange for medicinal dishes that are more valuable. Directly handing over 300 Qingfei San (a traditional Chinese medicine) is too inefficient and too troublesome.

"Yes, Master. I have now mastered the fifth-grade low-level leather sewing method. Can you tell me what I need to do?" Song You volunteered to do the work. He currently has more than forty copper coins and needs more than two hundred and sixty more.

If Song You didn't finish Jia Chunfang's task before the trial, he didn't think Jia Chunfang would kindly let him not go. More likely, she would force him to lend her money, and he certainly wouldn't be able to repay it.

Jia Chunfang was very satisfied with Song You's understanding nature, and after clearing her throat twice, she said, "Do you know about the barbarian alchemists?"

"Could it be someone who became an immortal through that kind of Qi cultivation method?" Song You said after careful consideration. He had learned about this online before, and at that time, the internet was full of talk about becoming an immortal by absorbing Qi.

However, that was in the previous world, and it may not be exactly the same in the Soul Treasury Temple.

"That's right. In the primitive era, the spiritual energy of heaven and earth was abundant. Those who were born close to the spirits could capture the energy and become immortals." Jia Chunfang said, a look of longing on her face. "Legend has it that they were unrestrained and not bound by illness. Their lifespan was much longer than that of us sick cultivators."

Song You, his heart pounding with excitement, asked curiously, "Master, how long ago was the barbaric era? And why can't we cultivate Qi Refining Techniques anymore?"

"I don't know either. Maybe it's ten thousand years, maybe it's a hundred thousand years." Jia Chunfang shook her head and said forlornly, "I heard that when the moon rose once, the giant sun rose from the west, and all these Qi cultivators suddenly disappeared, and these Qi cultivation techniques could no longer be practiced."

Why does this situation sound so familiar? After thinking for a while, Song You realized that it was exactly the same as the disappearance of those royal officials in the Great Qian Dynasty.

Just as Song You was about to ask the question, Jia Chunfang interrupted him, saying, "You don't need to ask. I don't know the connection either."

Song You had no choice but to stop asking questions. After a moment, he cautiously asked, "Master, how is this related to the task you assigned me?"

Jia Chunfang chuckled sinisterly, "Of course there are. There are countless methods for cultivating qi, one of which is the art of creating animals. You wrap an animal skin around a person's body and raise them as livestock. After a long period of starvation and forced labor, the person becomes an animal."

Song You felt a chill run down his spine and had a guess in his mind, but he didn't say anything and waited for Jia Chunfang to continue.

Jia Chunfang continued, "After the alchemists disappeared, many humans and animals remained in the world. Without the alchemists' harvesting, these humans and animals continued to multiply and pass on their lineage from generation to generation."

Seeing Jia Chunfang stop, Song You asked, "Is Master's task to skin them and sew them up?"

Jia Chunfang denied it, saying, "There's no need to skin them. They no longer have physical bodies. They are ultimately creations of magic. When each of their offspring is born, the parents have to skin them to raise the child. Since livestock often give birth to multiple children at once, the offspring become weaker and weaker. In the end, the flesh of the last offspring disappears, leaving only a skin. Their resentment from generation to generation is attached to the skin, supporting them as they wander in this world."

"Such a thing actually exists?" Song You was shocked. It sounded unbelievable, but these skins that could transform people into animals were the work of barbaric alchemists. Thinking about it, it made sense.

So he not only had to face the difficulty of sewing the leather, but also the resentment attached to it. His heart was in his throat; it didn't sound easy at all.

Jia Chunfang didn't give Song You any room to refuse: "By chance, I captured some sheep hides. I will give you a smaller portion of them. Sew them together according to my method. The price for the two hides is thirty copper coins. Are you satisfied?"

Song You cupped his hands and replied, "This disciple is satisfied."

He had to be satisfied, even if he wasn't. He couldn't just run off to do other elders' tasks, or Jia Chunfang would immediately take him down.

"Come with me." Jia Chunfang got up and left, and Song You followed him out of the medicine room.

As they passed the inner room of the pharmacy, Jiang Yangge hurriedly stepped forward to bow to Jia Chunfang. Jia Chunfang did not even glance at him, her expression remained unchanged, and she acted as if nothing had happened.

Song You didn't show anything unusual. The two left the pharmacy and came to the children's room. As expected, Jia Chunfang and Elder Tong had a very good personal relationship. They kept precious and secret items like sheepskin in Elder Tong's room.

"Old ghost, open the door!" Jia Chunfang shouted at the window.

"Little Jia, you're here. Let me call a servant boy to open the door for you." Elder Tong's head popped out, and he smirked when he saw Jia Chunfang.

He pulled his head back, and Song You guessed that he had gone to call the servant. A moment later, Elder Tong opened the courtyard gate himself and stood at the door. His gaze fell on Song You: "It's you again, kid. I was wrong last time. I didn't expect that you made those lung-clearing powders yourself. Next time, bring something else to replace them."

"I will obey the elder's orders." Song You did not argue. The elder in front of him had a very large upper body, but his lower body was very slender and he had never trained. In addition, the wise look in the elder's thin face made him look like someone who was not to be trifled with. Whatever he said was law.

Jia Chunfang immediately told him to get out of there: "Alright, old ghost Tong, get out of here after you open the door. We have important business to attend to."

"Little Jia, you've really taken on a good disciple, and you treat him well too. Could he be a relative of yours? No, if he were, you would have taken him in as a disciple long ago. If you don't want him anymore, why not give him to me? His physical body is quite good and suitable for practicing my technique."

Upon hearing this, Jia Chunfang looked Song You up and down and said, "I really didn't notice. Your physical talent is indeed quite good. After you finish the trial, you can try Elder Tong's method. I really don't believe that his technique can be successfully applied to a second person."

So he was being used as a guinea pig. The large ball of flesh in front of him swayed back and forth as Elder Tong spoke. Song You immediately declared emotionally, "I don't want to follow anyone else, I only want to follow Master."

"Did you hear that, old ghost? Don't even think about it." Jia Chunfang snorted coldly, ignoring Elder Tong, and led Song You forward.

After bowing respectfully to the smirking Elder Tong, Song You left, catching up with Jia Chunfang. When they reached the end of the children's room, Jia Chunfang stomped on a paving stone, splitting the large blue brick in front of her to reveal a passageway.

As soon as the door opened, a bone-chilling cold emanated from it, an aura even colder than the air surrounding the Soul Treasury Temple.

"Come on, follow me." After saying that, Jia Chunfang took the lead and walked downstairs.