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"What?" Giovanni turned around.

"It's best to clean everything in the room, smoke or anything else. You can ask Marino, they may all be potential disease-carrying threats."

"I see. Thank you for your reminder, Mr. Holmes."

"Don't worry, there's more." Jiang Lu continued calmly: "She hadn't recovered when you came in, so you may also be at risk of infection."

"Ah?" Giovanni was shocked. "What should I do?"

"While she's still clean, you can...uh, take over my shift, so you won't get sick again in the future."

"This...but she hasn't woken up yet."

Giovanni was not frightened by Jiang Lu's gameplay because the wisdom and spirit of exploration of the ancients are far more powerful than we can imagine.

As aristocrats, their private gatherings were sometimes even crazier.

It has to be said that after thousands of years of civilization development, what we are still using are just the things left over by our ancestors, which is really sad.

However, this made Jiang Lu feel a little relieved. At least he no longer had to provide psychological counseling to Giovanni.

Things suddenly became simple.

"Just wake her up." Jiang Lu said.

"But she's sleeping so soundly..." Giovanni patted his wife a few times but failed to wake her up.

Jiang Lu had no choice but to set an example himself.

He walked to the bed and lifted the quilt: "Learn how to force the machine to turn on."

This was a piece of cake for Jiang Lu, but it was a completely new knowledge point for Giovanni.

After a scream, his wife opened her eyes in confusion: "Where am I?"

"Go ahead, I'll wait for you outside."

"Wait a minute." Giovanni stopped Jiang Lu and said, "Can you teach me what you just did?"

"Forced to start?"

"No, not the ones before."

"?" Jiang Lu shook his head in disdain: "You've been watching for so long and you haven't learned anything at all? I'm surprised at your stupidity."

“My head understands it, but my body can’t learn it.” Giovanni lowered his head in shame.

After watching Jiang Lu's performance, he felt that his past experiences were a joke.

"Okay." Jiang Lu sighed and lifted up his wife. "I'll only demonstrate it once. How much you can learn depends on your talent."

Giovanni's wife and Giovanni were delighted and said in unison:

"The believer is willing to do good deeds all his life, and only wants to learn a few tricks."

"good."

......

Jiang Lu walked out of the bedroom, leaving enough time for the students to practice after class.

Catherine was originally chatting with the old butler with a smile on her face, but when she saw him come out, she looked sickly again.

"Doctor...I seem to have relapsed, please help me..."

"Don't pretend."

Jiang Lu held Catherine's head to prevent her from falling into his arms.

He is feeling a little irritated now.

Because he realized a problem.

A full half day has passed since entering the spiritual realm, but only two patients with the Black Death have been cured.

Florence has a large population. According to Giovanni, there are currently more than 1 people in the city, of which 4 are sick. A quarter of the sick have died, leaving nearly people.

Based on a 50:50 ratio of men to women, there are almost 20,000 people.

Even if we remove minors and the elderly who have not undergone the coming-of-age ceremony, there are still about 10,000 people.

Ten thousand people in nine days, it's impossible no matter how you think about it.

Even if we spread the healing factor in the same way as before, we would have to deal with hundreds of people a day, right?

This still ignores the ultimate goal, which is the result that would occur if all the root causes were cured.

Whether it’s too late or not is not the point for now, but people will get bored after a long time.

Noticing his change in mood, Catherine recovered herself: "What's wrong? What went wrong in there?"

"No, your brother and sister-in-law are fine. That's not the problem here."

Jiang Lu sighed: "But I can't explain the specific trouble to you."

"Oh..." Catherine didn't ask any more questions and quietly stepped aside, leaving Jiang Lu space to think.

Not long after, Jiang Lu suddenly had an idea.

He looked at Marino: "Do you have a lab?"

"Laboratory?" The unfamiliar word left Marino a little confused.

Jiang Lu thought for a moment and said, "Uh...it's your usual medicine making workshop or something."

"Yes." Marino nodded: "You want to go?"

"Yes, I plan to develop an antidote." Jiang Lu said with a firm look.

"That's great! Thank you..." Marino stopped talking halfway and asked awkwardly, "I'm sorry, Mr. Holmes, I haven't asked who the Red Cross believes in..."

Jiang Lu was speechless for a moment.

He had never thought about this matter. He felt that if he said that he believed in himself, it would be a bit too crazy, but if he said that he believed in a god he made up, it would feel like he was letting outsiders take advantage of the situation.

So he asked tentatively: "Have you heard of Ishina, the Goddess of Redemption?"

Marino thought about it carefully for a long time, and finally shook his head slowly: "I haven't heard of it."

"Okay, then it's her!" Jiang Lu made the decision immediately.

There was no god named Ishina in Jiang Lu's own real world, which made him guess that the gods in heaven were the same as those in the underworld, with different superiors having different influences in different worlds. That was why he asked this question tentatively, and the result did not disappoint him.

"Okay, thank you Ishina!" Marino prayed devoutly.

At this time, Catherine asked reluctantly: "Are you leaving?"

"Yes." Jiang Lu nodded.

"When will you come back?"

Jiang Lu raised his eyebrows: "What do you mean by come back when? It's as if you're not going."

"Me? I'm going too?" Catherine was a little surprised.

So Jiang Lu leaned close to her ear and said, "I need you to help me get the raw materials for making medicine."

Suddenly, Catherine's face turned red.

Some surprises and some expectations.

"Really?"

"real!"

......

After finalizing the rules, Marino took Jiang Lu to his temporary studio.

At that time, medicine was still largely influenced by theology, and a mature system had not yet been established. The instruments used by doctors looked strange, and a large part of them were inherited from wizards.

Jiang Lu had no idea what these tools were used for, but he was not panicked at all.

In order to cultivate the children's learning ability and basic understanding of the world, the director of the orphanage has been teaching the children with his rich knowledge, requiring everyone to study all the courses from elementary school to high school, even though few people are studying science in the general environment.

In a sense, the dean is the Oriental equivalent of Professor X.

This naturally includes Jiang Lu.

Although he didn't listen at all when he was in school, at least he never missed classes.

As long as he has seen it and experienced it, the process will be saved as a clear picture, just like a subscribed online course that can be viewed at any time. This is the confidence that the hippocampus brings him.

Although they are just ordinary high school chemistry and biology courses, in this era when even basic scientific ideas have not yet been born, each simple knowledge point is enough to be called a groundbreaking discovery and is completely sufficient.

So, he copied the textbooks and materials in his head and started using the tools at hand to perform operations that Marino couldn’t understand.

Not only he couldn't understand it, but some bird-beak doctors who had been in the profession longer than Marino also couldn't understand it.

They all came to watch after learning that Marino had brought back someone who could cure the Black Death, but to their disappointment, Jiang Lu didn't even know the basic usage of the tools.

However, due to Giovanni de' Medici's status, they did not dare to show any dissatisfaction towards Jiang Lu, a distinguished guest of the Medici family, but only mocked him in a veiled manner.

"Look, the pot he used to boil herbs is now being used to boil wine."

"If this can cure diseases, it is an insult to us."

"It's so bad, if my teacher sees me doing this, he'll beat me to death."

Jiang Lu didn't care about the whispers because he was busy copying homework and was immersed in the joy of plagiarism. He couldn't hear any sounds from the outside world at all.

But Catherine couldn't help it. Although she didn't understand what Jiang Lu was doing, it didn't stop her from defending Jiang Lu.

"Shut up!" she said angrily, "I am the patient he cured. I am standing in front of you in good health. Do you still have any doubts?"

Most of the doctors didn't dare to say anything about her sudden outburst due to her status, but a few well-known doctors openly ignored her and muttered, "Who knows if the Medici family is deliberately making things mysterious, hoping to use the excuse of curing diseases to make the lower-class people blindly submit."

Hearing this, Catherine was stunned, and then became even more angry.

She couldn't understand, let alone accept, why these people had such dark minds?

It is obvious that Jiang Lu was selflessly doing the great thing of saving Florence, but these people were slandering him and the Medici family!

Catherine didn't know them, but Marino did.

The identities of the people who were speaking were even more prominent than Marino. Some of them were doctors who had been practicing for many years, and some were so-called heirs of medical families. They all came here spontaneously from other places. Compared with other doctors, their roots were not in Florence, and each of them had a considerable background, so naturally there was no question of how they were afraid of the Medici family.

So Marino immediately stopped Catherine, who wanted to go home to ask for an explanation, and tried to smooth things over.