Chapter 1237

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

"The problem is quite serious. The materials chosen were wrong; the moisture and oxygen in the blood are the key to corroding the mechanical prosthetic. At the same time, apart from the original design concept which I think has no issues, this mechanical prosthetic has major problems both in forging technique and in conforming to the human body's structure."

"Ah, the problems are this big?" Zhai Tianlin's slightly handsome face filled with surprise. He had assumed that the mechanical prosthetic forged by his grandfather was merely imperfect in craftsmanship; he hadn't expected the problems to be this severe.

"Tianlin, you must remember that every person is a unique existence, and likewise the items we forge are also unique existences. Mechanical prosthetics that replace human body functions are not mass-produced inferior swords and blades; they likewise need to be custom-made for the person who needs them. Only this way can the potential problems be reduced to the minimum."

"Mm, I've remembered, Teacher." Zhai Tianlin nodded his head in a half-bewildered manner.

Lin Cheng earnestly and patiently instructed Zhai Tianlin.

This made Elder Zhai, standing at the side, blush deeply. He actually forgot such an obvious principle; he was just short of finding a crack in the ground to crawl into.

"The patient who drank the potion should not have any problems with his body now. All that remains is how to reforge a mechanical prosthetic; fortunately, the patient still has one leg left." Lin Cheng directly took out measuring tools, preparing to measure the patient on the sickbed.

"You two don't just stand there idle, come over and help quickly. One of you is in charge of untying the bandages; I need to see how worn his right leg's bones are. The other is in charge of measuring the length of the other leg; it must be absolutely precise!"

"Right, Elder Zhai, does your son have anesthetic here? The kind of drug that can make a patient lose all sensation in part of their body."

"Yes, I'll have someone fetch it immediately." Elder Zhai quickly recalled for a moment, then immediately turned around and ran outside.

Lin Cheng's plan was this: while custom-making the prosthetic based on the patient's severed leg, he also had to perform a surgical transplant on him. Since he was going to treat him, he had to thoroughly cure this fellow's severed leg problem.

A prosthetic transplant surgery about to be carried out, with no fewer than dozens of people bustling about at the scene. The reason was that when Lin Cheng was modifying the previous mechanical prosthetic on-site, Elder Zhai's son, who had gone out to treat patients, returned. Upon hearing Elder Zhai's introduction, he immediately joined in as well, doing various preparatory work before the surgery.

Lin Cheng, while forging the mechanical prosthetic, conducted on-site teaching of inscriptions for Zhai Tianlin and Elder Zhai. For example, using those few inscriptions in combination could make it sense the human body's brain nerves, thus solving the problem of the mechanical prosthetic not being as nimble as the original limb.

However, correspondingly, since it had to reach that level, the precision of the mechanical prosthetic likewise had to reach an extremely exquisite degree.

And Elder Zhai's son began using drugs to anesthetize Old Cheng on the sickbed. According to Lin Cheng's requirements, the worn area at Old Cheng's right leg bone break was too severe, and the worn parts still needed to be cut off.

Although it sounded scary, the specially made mechanical prosthetic afterward would be completely identical to the original limb. The fit between metal and bone also required inscription engravings to be applied 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.

But who was Lin Cheng? A deep researcher of inscriptions. After he explained, Elder Zhai and the others were relieved.

According to the explanation, there were two special inscriptions, Longevity and Harmony, that could allow bone and flesh to grow and fuse with metal, thus solving the integration problem and the issue of the connection points wearing against each other.

At this moment, the studious Zhai Tianlin suddenly raised the question: since Longevity and Harmony could make bone regrow, why not let the patient use these two inscriptions to regrow a leg?

Lin Cheng greatly appreciated Zhai Tianlin's ability to draw inferences, but he also had his own concerns and explanations regarding this.

"First, it's not that Longevity and Harmony cannot make a person regrow a leg, but that this process would consume an extremely vast amount of magic power, and at the same time wear down the patient's life force. Often, the patient cannot persist until the leg has fully grown out before their own life force is completely exhausted."

"Moreover, even if the patient persists until the leg grows out, there will be a huge difference from their own body, because this leg is hastened into being by magic and life force; no one knows whether it will mutate or perhaps become deformed."