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

"Junior Brother Song, you're back?" Brother Jiang was startled by Song You's sudden appearance. He wondered if Song You had seen what had just happened, and his heart was pounding.

Song You didn't point it out: "Senior brother, are you still coming to the pharmacy so late?"

"I just remembered I hadn't tidied up the medicine furnace, so I came over," Jiang Yangge said, making up an excuse. "Junior brother is still working on it."

Song You nodded in understanding, and after thinking for a moment, he hinted, "I just exchanged for a recipe. Now I'm back to complete the task Master assigned me. By the way, Senior Brother, do you know what happened in the inner chamber recently?"

Just as Jiang Yangge was about to bring up the matter of the transaction, he was a little confused when he heard Song You say this: "I think I heard about it. It happened a few days after you started your training. They said there was some trouble, but it was quickly quelled. Do you know anything about it, Junior Brother?"

"Master took me to the scene. There was a senior brother in the inner chamber who had gone mad and mutated due to improper cultivation." Song You looked into Jiang Yangge's eyes. "Master told me that the best cultivation method is the one that suits us. Cultivation is not easy. Senior brother, why don't you go and find out what happened and not go astray?"

Jiang Yangge's heart skipped a beat. Even if he was slow to understand, he understood what Song You was talking about. Song You had already mentioned the word "cultivation method," and considering his relationship with his sister, it was obvious that there was a problem with the Qi cultivation method.

But that's his family's secret technique. No one in his ancestors had ever had any problems with it. No, it seems like none of his ancestors had any talent. So it's fine.

Song You had no reason to lie to himself. Looking at his junior brother, Jiang Yang sighed inwardly. The other party must have noticed his actions, but he didn't directly confront him, wanting to maintain the decorum between them. How could he be so tactless?

Jiang Yangge cupped his hands and said, "Thank you for reminding me, Junior Brother. I was too attached to appearances."

"Senior Brother's talent for lung fire is no less than anyone else's. I will need Senior Brother's help in the future." Seeing that Jiang Yangge understood his meaning, Song You prepared to go to the pharmacy to retrieve some materials: "Then Junior Brother will take his leave to get something."

As Song You's departing figure gradually disappeared from sight, Jiang Yangge couldn't help but feel a little frustrated. It was something that an elder disciple like Song You knew as soon as he entered the temple, but he had been kept in the dark all along. If Song You hadn't reminded him, he might not have known until his death.

Thinking of the bronze chicken statue at home, Jiang Yangge felt annoyed. All the blood and flesh he had fed it before had been wasted, and he had also wasted his attempts.

Song You looked back and saw that Jiang Yangge had already left, so he rushed to the warehouse and the tanning yard to get the materials and returned to his medicine room.

After carefully checking the room, Song You found no changes. He then placed several materials in front of him: a bag of Viola yedoensis and white fungus, ten boiled frog legs, three large pieces of pork, and finally a large piece of wolf skin.

The first few are used to make the medicine carriers in the medicine bag. To achieve the medicinal properties of the mind-concentrating medicine bag, the medicine carriers also need to reach the fifth grade of inferior quality. Unlike medicinal food, the medicine carriers cannot be eaten, but the decoction process is similar. Song You had experience with the lung-clearing powder, so he could get the hang of it quickly.

Song You put the materials aside and picked up the large piece of wolf skin. He was confident that he could sew a low-grade fifth-class leather bag in the remaining time, but to prevent any accidents, Song You still planned to start by sewing the leather.

In his spare time between brewing medicine, he either cultivated or studied "Wrapped Medicine in a Bag" diligently. By now, he had memorized most of the contents of the book, and compared to the last time he was suddenly asked to sew up skin, Song You was much more confident.

Song You unfolded the leather and measured it carefully. This piece of leather was much larger and stronger than the one he had sewn last time. After he finished measuring, he used a bone needle to cut it into more than a dozen even pieces and placed them on the ground.

After finishing his meal, Song You took a deep breath to calm down, recalled the tips and tricks in the book, picked up the leather and sewed it up. He then released the outer flames that adhered to the tips of the bone needles, and the powerful corrosiveness allowed the needles to penetrate the wolf skin more effectively.

Last time when the skin was being stitched up, Song You's lung heat was insufficient to sustain him due to the depletion from decocting the medicine. In the end, he only managed to persevere after consuming Jia Chunfang's Tibetan-style meals.

This time, Song You's lung fire was very abundant, enough for him to carry out a complete exercise. The bone needles shuttled back and forth on the skin, lifting and overlapping various parts together.

With his experience in sewing, Song You was able to find a place on the wolf skin where he could quickly insert the needle and penetrate the flesh layer as fast as possible, moving on to the next stitch before the effects of the previous one had worn off, thus greatly reducing his energy consumption.

After an incense stick had burned, the last needle was inserted. Song You used a bone needle to sever the hemp thread, and the outer flame wiped away the exposed thread ends.

Song You picked up the entire leather bag and placed it in front of him. The bag was perfectly sealed without any gaps, indicating that the operation was basically successful. But that was all; compared to the graded leather bags recorded in the records, this thing was too ordinary.

The medicine pouches described in the medical book are complete and without any defects. Before wearing them, you can clearly feel the changes when you take them out, and these changes will disappear after wearing them, allowing the wearer to perfectly enjoy the effects of the medicine.

When Jiang Yangge took out the Winter Return Medicine Pouch, Song You clearly felt a slight change in the surrounding environment. Before it was taken out, Song You had no idea of ​​its existence.

The one in Song You's hand obviously didn't have that effect; it was simply sewn together. Song You took out "Wrapped Medicine in Bags" and studied it carefully again, only to find that the one in his hand was different from the one drawn in the book, differing from the one with just a few needle holes.

It seems that this medicine pouch requires a very high degree of accuracy. Song You calmed down and realized that he had been a little too hasty just now.

He picked up the bone needles and leather and started again. With his mind prepared, he encountered considerable resistance when inserting the needles. Song You slowed down to ensure that all the needle holes were in the same positions as in the book.

One needle after another, until they were almost at the end, Song You suddenly noticed something was wrong. The bone needles in his hand were becoming increasingly difficult to insert, and the skin sac was bulging. This situation was not recorded at all, so he immediately stopped what he was doing and began to examine it.

He picked up the ordinary skin pouch he had just made and compared it with the one he had just made. The only difference between the two was the place and order in which the needles were inserted into each section of skin. Could there be something wrong with that? Song You picked up the bone needle and tried again. Sure enough, he felt a kind of obstruction. In the end, he couldn't insert it at all.

He calmed down and thought about it seriously. The order of needle insertion and the needle hole had such a big impact. Perhaps it was a problem with the properties of the hide itself. Only the right method could bring out the cold nature of the wolfhound hide and sew a hide into a product.

Once Song You understood these things, he suddenly had a breakthrough. He picked up a new piece of skin and inserted the needle in the correct place. This time, the resistance encountered by the bone needle was greatly reduced, and he even felt as if he was being pushed forward. In the end, Song You had to control the outer flame to slow down the speed.

Finally, after an incense stick's time, the last needle was inserted, and the leather bag in Song You's hand was completely renewed, faintly radiating a chill.