Chapter 575

Along the way, several blacksmiths asked about their doubts regarding inscriptions. Lin Cheng naturally answered every question, stopping to explain in detail until the other party had a sudden realization and understood completely, before he continued toward the conference room.

In the afternoon class, there seemed to be some more unfamiliar faces among the blacksmiths present. Lin Cheng didn't mind, continuing to vividly and interestingly explain his understanding of inscriptions, occasionally practicing enchanting directly on the stage and answering questions for the blacksmiths below.

Time flew by, and soon the five inscriptions for the day were explained, and the last question was also perfectly answered.

Neither Lin Cheng nor the blacksmiths below felt how fast time had passed, but it was already time for class to end.

"Alright, let's stop here for today's class. Tomorrow I will explain ten brand-new inscriptions, don't miss it."

"Almost forgot, the Flying Fox Restaurant is launching brand-new dishes tonight, half-price discount, those interested shouldn't miss it." Lin Cheng didn't explain exactly what the Flying Fox Restaurant was selling, nor did he force everyone to go, but since the words came out of his mouth, how could the effect be ordinary?

He cleverly left a cliffhanger that attracted most of the blacksmiths present, especially the few young people in the room. From the class, they discovered that Lin Cheng was completely different from those old guys; his class was interesting and vivid, very novel. Perhaps because they were of a similar age, they were more convinced by some of the things Lin Cheng said.

For example, maybe the Flying Fox Restaurant really would have delicious new dishes tonight?

Before Lin Cheng left the guild, Elder Zhai found him in the carriage, looking like he wanted to say something but hesitated, which made Lin Cheng very anxious.

"Elder Zhai, do you have something to say?"

"Yes! Now... it won't disturb you, will it?" Elder Zhai seemed very worried that Lin Cheng would refuse, his tone and attitude full of hesitation and concern.

"No, if you have something to say, just say it. I have time." Lin Cheng waved his hand with a smile; class was over, what urgent matter could there be?

It was nothing more than waiting to go back and taste the fried chicken, hamburgers, and milk tea.

"It's about some matters regarding a mechanical arm. One of my patients recently came to me because of the aging of their mechanical arm, but my ability is limited, so I would like to ask you, Master Lin Cheng, for help." Elder Zhai hesitated before slowly telling the whole story.

Originally, Elder Zhai wanted to wait until Lin Cheng's class ended to find him, but time waited for no one.

That patient seemed to have developed a serious metal disease, and the situation was critical; if they continued to wait, there might be a danger to their life.

"Then what are we waiting for? Saving lives is urgent, let's go immediately." Lin Cheng frowned, got out of the carriage directly, and urged Elder Zhai to lead the way.

"That's great. With Master Lin Cheng taking action, the patient will be saved. Please follow me."

While Elder Zhai was overjoyed, he took Lin Cheng directly into his own carriage.

To Lin Cheng's slight surprise, the white-haired youth who had caught his attention in class earlier was actually Elder Zhai's grandson, and he was the one driving them to the Zhai Family Medical Clinic where the patient was.

This made him inevitably a bit curious.

"Elder Zhai, the one driving outside is your grandson, right?"

"Yes, that is my grandson Zhai Zhai Tianlin. Why, Master Lin Cheng?" Elder Zhai's heart was now entirely on the patient; he didn't know why Lin Cheng was suddenly interested in his grandson.

"Nothing, Elder Zhai." Lin Cheng shook his head with a smile.

"I just think Zhai Tianlin's performance in the inscription class was excellent, and he has a great talent for inscriptions. If he is willing, he can become my disciple."

"That would be truly wonderful! Zhai Tianlin will definitely be willing. He was just saying earlier that you, Master Lin Cheng, are his idol."

"Is that so? I'm a bit embarrassed now." Lin Cheng was very happy; he actually had a time when others regarded him as an idol. The joy in his heart made him laugh out loud.

"Zhai Tianlin." Elder Zhai called out to his grandson outside.

Zhai Zhai Tianlin was driving the carriage in front, so he could naturally hear what was said inside the carriage.

"No need to ask, Grandfather, I am very willing!"

His words carried an irrepressible joy, making him unable to help but shout out on the street.

"Oh ho, I'm Master Lin Cheng's disciple!"

"This child." Elder Zhai looked at Lin Cheng beside him with some embarrassment, hoping he wouldn't mind.

"Haha, I understand."

Lin Cheng was actually the same; if he could suddenly achieve something exciting, he would definitely be unable to help but shout it out, wishing everyone knew.

Listening to the excited shouts of his grandson outside, Elder Zhai seemed to age a bit in an instant, his heart filled with emotion.

Lin Cheng was already an eighth-tier blacksmith at such a young age, while he, with one foot in the grave, was only a sixth-tier blacksmith. Learning from an old man like him, Zhai Tianlin might find that being a sixth-tier blacksmith was his limit in this life.

Being able to learn from Lin Cheng, Zhai Tianlin's achievements would inevitably be higher than his.

It was just that, amidst the joy, there was also an indescribable, slight sense of loss, as if he were about to lose his grandson.

Once, Zhai Tianlin thought he was the most powerful blacksmith in the world, and they had once vowed to use blacksmithing to re-equip all the disabled people who had lost limbs, until now.

Now that Zhai Tianlin was going to learn from Lin Cheng, his heart felt more or less reluctant to let go.

"Elder Zhai, what's wrong? Are you tired?"

Lin Cheng looked at Elder Zhai and suddenly had a strange feeling, as if Elder Zhai, who had been full of vitality before, had suddenly aged a lot. He couldn't help but care about his health.

"Hmm, I am indeed a bit tired. I've been thinking about that patient during the afternoon class, which kept me somewhat distracted." Elder Zhai still felt as if a giant rock were hanging in his heart.

That patient was not only his patient but also his friend of many years; he truly hoped the other party could survive.

But those who contracted metal disease almost all...

The Zhai family's carriage soon arrived at the Zhai Family Medical Clinic. Although Elder Zhai had devoted himself to the blacksmithing career all these years, his son did not like blacksmithing and was devoted to medicine, and was also a renowned physician in the entire Rock Fortress City.

It was precisely because of this that Elder Zhai, after seeing his former close friends lose their limbs one by one due to magical beasts and become disabled, had the idea of creating mechanical limbs to replace the original ones.

"Teacher, Grandfather, we have arrived at the clinic." Zhai Zhai Tianlin shouted from outside the carriage.

Lin Cheng and Elder Zhai immediately got out of the carriage and headed straight into the clinic. Elder Zhai ran inside while calling out to ask, "How is Old Cheng?"

"It's Elder Zhai. That patient with the metal disease? There has been some improvement, but the condition is still very unstable."

"Master Lin Cheng, let's go in quickly."

From Elder Zhai's previous description, Lin Cheng learned that the so-called metal disease should be a bacterial infection.

And the patient Elder Zhai called Old Cheng was one of the earliest experimental subjects to receive mechanical prosthetic transplantation.

However, Elder Zhai's skills were limited. After the mechanical prosthetic leg had been used for many years, it would inevitably undergo oxidation and rust, but this was fatal for the patient.

Yet the patient himself was unaware of it, so by the time the patient had an accident, he was already critically ill.

Old Cheng was lucky; he seemed to have noticed that something was wrong with his body and came to find Elder Zhai in advance, which was why he had luckily saved his life under the careful care of Elder Zhai's son.

Entering the medical room, Lin Cheng saw at a glance the unconscious patient lying on the hospital bed, with a right leg amputated almost to the thigh, wrapped in layers of blood-stained gauze, his face pale, breathing rapidly.

It was just as the physician said earlier: there was a slight improvement, but the condition was still unstable.

"This is Old Cheng. Master Lin Cheng, I hope you can save him." Elder Zhai looked at his close friend on the hospital bed with a face full of guilt.

He had been too arrogant in the past, thinking that if he could forge replaceable prosthetics, he could achieve large-scale transplantation for those disabled people.

But in reality, after those prosthetics were used for a few years, they would cause the patients to develop metal disease due to metal poisoning.

Few lucky ones could survive.

"I cannot guarantee I can save him; after all, I am not a physician." Lin Cheng leaned in to observe, placing the back of his hand on Old Cheng's forehead—high fever. He then looked at his pupils—deep coma. It was indeed a bacterial infection.

"No, Master Lin Cheng, I know the metal disease was caused by the batch of mechanical prosthetics transplanted back then. I hope you can assist me in improving the mechanical limb. Old Cheng's injuries will be treated by my son."

"This guy is lucky; it's likely a bacterial infection at the wound site, not to mention potential metal poisoning. If there is, it will be troublesome. Did you use heavy metals when you forged the prosthetics back then?"

Heavy metals were the four types of metals harmful to the human body. Because these four metals were not needed in life activities, excessive intake of them would have extremely serious consequences for the body. They were lead, mercury, arsenic, and cadmium.

"What is heavy metal?" Elder Zhai was still confused.

"Forget it, I can't explain it clearly to you either. Bring me the mechanical prosthetic you transplanted into him back then so I can take a look." Relying on the system, Lin Cheng could clearly distinguish which metal components were in it.

"Oh, oh."

Elder Zhai was just about to go get it, but Zhai Zhai Tianlin had already taken out the mechanical prosthetic from under the bed and handed it directly to Lin Cheng.

"Hmm, Zhai Tianlin, you feed this to him; it should have some effect." Lin Cheng took the mechanical prosthetic with one hand and handed the life potion to Zhai Tianlin with the other.

"Okay, Teacher."

Zhai Zhai Tianlin nodded, took the potion, and fed it directly to Old Cheng on the hospital bed.

Not long after, the potion took effect. Old Cheng coughed twice, his face became much ruddier, and his condition improved, but he remained in a coma.

Lin Cheng also had a preliminary study of the mechanical prosthetic on the side. In fact, Elder Zhai had done his best in forging this mechanical prosthetic back then, imitating the human leg for squatting and conventional walking.

There was almost no problem with the original intention of the structure, but since only the original intention of the structure was fine, the problem lay in the forging technique.

Mechanical prosthetics were different from the body's original limbs. Every friction and walk would inevitably cause wear and tear. The human body was the same, let alone a mechanical one.