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In this era, annealing was usually done in pottery jars, with some charcoal and animal fat added (fish oil was used due to the coastal location), and then the pottery jar was sealed. A small hole was left in the seal for secondary firing. The oil and carbon powder inside the pottery jar effectively prevented air from entering the jar, causing the iron wire to oxidize and fail.

Once the annealed iron wire was ready, it could be drawn again. The resulting iron wire needed to be cut and bent into rings, and the ring part had to be flattened and punched with rivet holes, thus completing the ring. Liu Yuan designed a mold that could forge 50 iron rings simultaneously, effectively reducing the construction period to one-third of what it was before, much to the delight of the old fellow.

Next, the finished iron rings needed to be carburized and quenched, otherwise they would not be hard enough to withstand a blade. As for the next steps, that was where the real skill came in. In fact, every blacksmith had a different quenching method, and Old Parker did not shy away from showing Liu Yuan, performing the operation in front of him. Carburizing and quenching also used a pottery jar, filled with iron rings, and then animal blood, urine, charcoal, and oil were added. After sealing the mouth and leaving a small hole, it was fired again. After firing, the whole jar was thrown into water to cool.

The rings taken out again were the carburized and quenched iron rings. However, quenching only increased the hardness, and tempering was needed to improve the toughness. Tempering only required simmering at a low temperature for a period of time, and after simmering, the finished iron rings were ready.

Finally, the iron rings were woven into a coat of armor, and the small holes on each ring were riveted, creating the finished chainmail. Liu Yuan was currently in the process of weaving the armor, and his movements were very fast, sealing the rings with small pliers in his left hand after stringing them together.

This was a long chainmail shirt, with long sleeves and a hem that went past the knees, and it was more than seventy percent complete. Old Parker was making a helmet, the kind with a flat top and a face covering. While working, he boasted to Liu Yuan: "Galen, you don't know, when I was young, I crossed the Narrow Sea and went to Qohor on the other side to study. The master craftsmen there can recast magical alloys and can also permeate pigments into metal. I learned a few tricks back then. When you get older, I'll teach them to you."

At this moment, a chubby boy pushed the door open and rushed towards Liu Yuan, anxiously saying, "Galen! Mom told me to let you know that Aunt Buma has fainted. You should go home and see her quickly!"

Upon hearing this news, Liu Yuan stood up immediately, dropping the chainmail and the tools in his hand on the ground. The small iron rings scattered all over the place with a "clatter", and Old Parker sighed helplessly.

When he ran home, there were already several people in the room. Butler Balin and Lya, the head kitchen maid, were there. Lya's son, Leo, was the one who had just notified Liu Yuan. Another person in the room was Scholar Wells. Balin had enough influence to invite a scholar to treat Buma.

Lya took Liu Yuan's hand and said, "Galen, you're back. Buma suddenly fainted just now, and the scholar is treating her." Liu Yuan did not speak, but stood quietly to the side.

Finally, Scholar Wells came out and said helplessly, "Her illness is very serious and beyond my ability to treat. You should spend more time with her! I'll go back and prepare some poppy milk for her, which will make her feel better." Then he glanced at Liu Yuan silently, turned around and left, with Balin following.

Lya patted Liu Yuan on the shoulder and said, "Galen, you should spend more time with Buma! I'll go get you some food."

Liu Yuan sat by the bed, holding Buma's hand. He could feel Buma's life force draining away. In the past year, Buma's health had deteriorated, and years of labor and multiple miscarriages had greatly damaged her health.

Liu Yuan reached out and smoothed Buma's furrowed brow. As an old guy with a mental age of over a hundred years, he had seen a lot of births, old age, sickness, and death. But whenever he faced such a scene, he felt very sad. Although they had not known each other for long, this woman truly loved him as her own child.

Liu Yuan curled up in her arms, gently hugging her and falling asleep. There was nothing he could do; every day his body would enter about ten hours of forced sleep. As long as the time came, he would fall headfirst, even if there was a fire in front of him.

When he opened his eyes again, Buma had already woken up. She was holding Liu Yuan with a smile on her face, talking softly to Balin. Balin's eyes were red as he held a wooden bowl and spoon-fed Buma a milky white medicinal liquid, showing that the two had a deep affection for each other.

Seeing Liu Yuan awake, Balin put the medicine bowl aside and said, "Galen, you're awake, that's good. This is poppy milk prepared by the scholar, only feed her a little when she is in unbearable pain. Remember to only feed her a little! I have something to do, so I'll leave first." As the castle's butler, he was very busy, and the Earl would call on him at any time.

Liu Yuan nodded and took the wooden bowl. This thing was addictive to a certain extent and could be considered a drug in this world. This was normal, even in the 21st century, hospitals still injected morphine to relieve the pain of some seriously ill patients. He also picked up a tray next to him, which contained food brought by Lya: a very soft lamb and potato soup, very suitable for Buma's physical condition. Liu Yuan picked up a wooden spoon and fed Buma little by little.

Buma was very weak but could not hide the joy in her eyes. She said softly, "Galen, my child. From the moment you were born, you have never left me for a day. Although you are not my biological child, you are my only child. I am very sorry that I cannot continue to accompany you. You have to walk the road alone from now on. Child, can you promise me? You must live strong, and live with the hope of me and Vina!" Her words carried a kind of power that struck Liu Yuan's heart. He extremely hated this feeling of powerlessness.

Four days later, Buma passed away. She passed away peacefully, and Balin gave her a final kiss. She stopped breathing in the arms of her lover, with her most beloved child beside her.

After Buma died, Liu Yuan drove everyone out, and he also strongly rejected Balin's request to arrange a funeral.

He said coldly, "Butler, you have betrayed the feelings between you. If Buma hadn't been seriously ill, you wouldn't have come to her room for almost two years! Now, as her adopted son, I have the right to hold a funeral in my own way, so please leave!"

Balin mumbled for a long time, "Alas!" With a long sigh, he left in dismay.