Chapter 576

Compared to the human body's wear on the soles of the feet, the mechanical prosthetic not only caused wear on the metal at the soles but also on the broken bone at the transplant site. In the short term, it might not be noticeable, but over time, the problem would become huge.

The friction between metal and bone caused secondary wear on both. As time passed, the gap between them grew larger, and accidents naturally occurred.

At the same time, it must be mentioned that the water and oxygen in the human blood were also accelerating the oxidation of the metal. This was a problem with the materials.

"How is it, Teacher?"

Elder Zhai had no face to speak, so naturally, he had to rely on Zhai Zhai Tianlin to take the initiative to ask Lin Cheng.

"The problem is huge. The choice of materials is wrong; the water and oxygen in the blood are the keys to corroding the mechanical prosthetic. At the same time, besides the original intention of the structure, which I think is fine, this mechanical prosthetic has huge problems in both forging technique and human-compatible structure."

"Ah, the problem is that big?" Zhai Zhai Tianlin's slightly handsome face was full of surprise. He had thought that the mechanical prosthetic his grandfather built should only have imperfections in mastery, not that the problems were so big.

"Zhai Tianlin, you must remember that everyone is a unique existence. Similarly, the items we forge are also unique existences. Mechanical prosthetics that replace human functions are not inferior swords produced in batches. They also need to be tailored for the people who need them. Only in this way can potential problems be reduced to a minimum."

"Hmm, I remember, Teacher." Zhai Zhai Tianlin nodded ignorantly.

Lin Cheng's earnest teaching to Zhai Zhai Tianlin.

Made Elder Zhai on the side blush; he had actually forgotten even such a simple truth, and he almost wanted to find a crack in the ground to crawl into.

"The patient who drank the potion shouldn't have any problems with his body. Now all that's left is how to re-forge a mechanical prosthetic. Fortunately, the patient has one leg left." Lin Cheng took out measuring tools directly, preparing to measure the patient on the hospital bed.

"You two don't just stand there, come over and help. One is responsible for unwrapping the bandages; I want to see how worn his right leg bone is. One is responsible for measuring the length of the other leg; it must be absolutely precise!"

"By the way, Elder Zhai, does your son have anesthesia here? That kind of drug that can make a patient's body part lose all sensation."

"Yes, I'll have someone get it immediately." Elder Zhai quickly recalled and immediately turned and ran toward the outside.

Lin Cheng's plan was this: while tailoring it according to the patient's broken leg, he also had to perform a surgical transplant. Since he was going to treat him, he had to thoroughly treat the guy's broken leg problem.

A prosthetic transplant surgery was about to begin, with dozens of people busy on the scene. The reason was that while Lin Cheng was modifying the previous mechanical prosthetic on-site, Elder Zhai's son returned from treating a patient outside. After hearing Elder Zhai's introduction, he immediately participated in it, doing various preparations before the surgery.

Lin Cheng was forging the mechanical prosthetic while teaching Zhai Zhai Tianlin and Elder Zhai about inscriptions on-site. For example, using a combination of those few inscriptions could make it respond to the human brain's nerves, which could solve the problem of the mechanical prosthetic not being as flexible as the original limb.

However, relatively speaking, since he wanted to achieve that level, the precision of the mechanical prosthetic also had to be very exquisite.

Elder Zhai's son began to use drugs to anesthetize Old Cheng on the hospital bed. According to Lin Cheng's requirements, the wear on Old Cheng's right leg bone was too serious, and the worn-out part still needed to be cut off.

Although it sounded scary, the specially made mechanical prosthetic would be exactly the same as the original limb afterward. The fit between metal and bone also required applying inscription carvings to both the bone and the metal simultaneously.

This statement shocked everyone present even more. Inscriptions could actually be used on humans.

This idea was simply unheard of.

However, who was Lin Cheng? A deep researcher of inscriptions. After his explanation, Elder Zhai and the others were relieved.

According to the explanation, there were two special inscriptions, "Longevity" and "Harmony," which could allow bone and flesh to grow and fuse with metal, thus solving the problem of integration and no longer wearing out the connection points.

At this time, the studious Zhai Zhai Tianlin suddenly asked, since "Longevity" and "Harmony" could allow bones to regrow, why not let the patient use these two inscriptions to regrow a leg?

Lin Cheng very much appreciated Zhai Zhai Tianlin's ability to draw inferences, but he also had his own worries and explanations.

"First of all, it's not that 'Longevity' and 'Harmony' cannot make a person regrow a leg, but this process consumes a very huge amount of magic power and also depletes the patient's life force. Often, the patient cannot hold on until the leg is fully grown before their own life force is exhausted."

"And even if the patient holds on until the leg grows out, it will have a huge difference from their own body, because this leg is catalyzed by magic and life force. No one knows if it will mutate or be deformed."

"The power of inscriptions is not as beautiful as we imagine, and our control over it is not perfect. Before having a deeper understanding of inscriptions, I do not recommend doing that."

This was similar to the infinite division of cancer cells. Once Pandora's box was opened, it wouldn't be so easy to close it again.

It would only keep expanding like a ball of flesh, or the broken leg would grow infinitely, but it would never grow a sole, because these were two completely different parts.

Why was Lin Cheng so experienced? Because the system told him all this!

Regarding the thirty inscriptions given to him by the system, there was no one on this continent who understood the function of these inscriptions better than him.

Although the precise mechanical limb required extremely high forging mastery, Lin Cheng was already familiar with it. Possessing the spell flame and the forging experience of the integrated mechanical arm allowed him to very easily forge the mechanical right leg tailored for Old Cheng.

Afterward, it was Elder Zhai's son's time to cut off the worn part of Old Cheng's right leg bone and perform the transplant of the brand-new mechanical limb. Then Lin Cheng taught on-site, using inscription carving. The moment the inscription took effect, the bone and flesh grew together with the mechanical right leg. The whole process was as if the mechanical right leg was a part of Old Cheng.

This was the function of inscriptions!

The effect amazed everyone present, sighing that inscriptions actually had surprising effects in terms of treatment. Elder Zhai's son almost wanted to worship Lin Cheng as a teacher, but he was politely refused by Lin Cheng. He didn't mind Zhai Tianlin going back to teach the two of them, but Lin Cheng only accepted people he favored as disciples.

Of course, during this process, Old Cheng was completely asleep. When he woke up and found he had a new leg, his expression would definitely be very exciting and joyful, but Lin Cheng didn't have the time to keep waiting.

He had to rush back to eat; he was hungry.

"Let him drink this potion when he wakes up... By the way, try not to let him walk on the ground for these few days. Wait until the inscription and his physique, as well as the mechanical right leg, are completely fused before helping him walk on the ground." After leaving instructions and the life potion, Lin Cheng prepared to leave.

"Master Lin Cheng, let us see you off." Elder Zhai wanted to send Lin Cheng home, but was ruthlessly refused by Lin Cheng.

"No need, you guys stay here to look after him. I can fly home quickly using the mechanical arm." Always sitting in slow transportation like a carriage made him almost lose the joy of high-speed galloping from before. Today, no matter what, he had to fly home using Master Lu Ban's mechanical arm. Putting on the mechanical arms at the clinic entrance, Lin Cheng rose into the air in full view of everyone, then flew into the sky, unimpeded all the way.

"So cool." Zhai Zhai Tianlin couldn't help but exclaim as he watched Lin Cheng go away.

"Yes." Zhai Zhai Tianlin's father felt the same, looking up with envy on his face; that mechanical arm was really too cool.

Actually, Elder Zhai was also envious of that mechanical arm, but unfortunately, with his skills, he definitely couldn't build it, and he probably wouldn't be able to in this life, but someone else was different.

"Zhai Tianlin, as long as you learn well from Master Lin Cheng, one day, you will also be able to build a mechanical arm like the Master's, and then..." Elder Zhai patted his grandson's shoulder with anticipation.

"Then, I will be as cool as the Teacher!" Zhai Zhai Tianlin understood and was full of confidence, but what greeted him was Elder Zhai's tapping.

"All day long you only think about this. I mean, as long as you study hard, then you will not only be able to build one for yourself, but you can also build one for me and your father, a mechanical arm that can fly like this."

"Yes, this idea is very good." Zhai Zhai Tianlin's father strongly agreed with his father's statement.

"Oh, oh."

Zhai Zhai Tianlin didn't think so, his face full of grievance, but he didn't say it.

On the other side.

Lin Cheng, who was flying at high speed over Rock Fortress City, felt the comfortable sensation of the air quickly sliding over his skin—it was simply too refreshing.

"Oh ho... refreshing, this is the feeling of freedom!!"

"Hahaha!"

The sound of talking from the sky naturally attracted everyone's attention. Everyone looked up, looked at the sky, but only saw a blue stream of light; other than that, they couldn't see anything.

What the heck, it flew past in a flash?

Private flight was not allowed in the city. Lin Cheng's high-speed flight and laughter naturally attracted the attention of the city patrol soldiers, but their speed couldn't even catch Lin Cheng's exhaust. The moment they discovered him, the next second they lost him. They only knew a direction, but what use was that?

Returning to the Flying Fox Restaurant, Lin Cheng descended directly at the restaurant entrance, the six mechanical arms behind him spread out, releasing a counter-force to help Lin Cheng alleviate the impact. This scene, a righteous descent, scared the customers waiting in line outside the restaurant, but they soon recovered, their faces showing excitement.

"My god, what kind of prop is this? It's too cool."

"You don't understand this, do you? That should be the Empire's newly promoted eighth-tier blacksmith, Master Lin Cheng Tuote, the youngest eighth-tier blacksmith in the Empire's history, who is very likely to break through to a ninth-tier blacksmith. I heard the Master lives in the Flying Fox Restaurant; this should be him in person."

— Author's Notes —

·······Seeking flowers····· ·····