There was a pious look on Zhao Shizhen's face, as if he was holding an incomparably sacred treasure in his hands.

First of all, we can rule out that it is not a gun, otherwise Zhao Shizhen would have a pervert look on his face.

He carefully placed the exquisite wooden box on the table, and the three famous doctors saw that a line of high-end, elegant and classy official script was engraved on the rosewood lid.

Li Shizhen read the words carefully and said: "No one knows more about microorganisms than me."

"Wow, what a big tone." Li Lunming couldn't help laughing.

"What are microorganisms?" Wan Mizhai asked with a smile.

"They are organisms that are invisible to the naked eye." Zhao Hao smiled faintly and said, "I call them microorganisms. The reason why people get sick is mostly because of these invisible little things."

He glanced at Li Lunming and said, "What Mr. Nantong called 'the young Gu worm' is something similar."

The adult worms of Schistosoma japonicum are between 12 and 20 millimeters and can be seen with the naked eye. The three famous doctors have seen it with their own eyes. But how this thing came to be and how it grew up is a mystery throughout the ages, so it is called "gu worm disease" at this time.

This is true. In fact, the poison used in Miaojiang is actually various pathogenic microorganisms.

"I can't see it anyway, so what do you say?" Li Lunming is actually a very kind elder, but his professionalism and pride as a medical scientist make it difficult for him to accept this statement.

No matter how much Mr. Zhao gives, it won’t work.

"What would you say if I could let you see it?" Zhao Hao asked with a smile, gently stroking the sandalwood box.

"Sir, if you can let us see this thing, it will be a great merit." Wan Mi Zhai said seriously.

"That's right." Li Shizhen also nodded and said, "I will write it into the Compendium of Materia Medica and indicate that it was discovered by Mr. Zhao."

"Haha, that's not necessary." Zhao Hao waved his hands and thought to himself, if I have a large group of disciples and they still have to rely on "Compendium of Materia Medica" to become famous in the end, then that would be such a failure.

"How about this, if I can show you three never-before-seen microorganisms, including the larvae of Schistosoma japonicum, you can stay in Kunshan for a few years, and we can happily study medicine together, how about that?"

Zhao Shizhen was secretly excited when he heard this, thinking that science is indeed invincible and can lead to everything. There is nothing in this world that the master does not understand!

Naturally, the three famous doctors had no reason to refuse. If what Zhao Hao said was true, they would stay and study this new world of microorganisms.

Although they can accurately grasp the symptoms through observation, auscultation, questioning and palpation, they have never been able to figure out the real cause and can only rely on speculation.

But seeing and hearing are the most real. Being able to see the cause of the disease with one's own eyes is every doctor's dream.

"Okay, as long as you can let me see the...microorganisms." Li Shizhen nodded happily and said, "I will stay in Kunshan."

I thought to myself, I have no intention of leaving my financial sponsor anyway.

Li Lunming also nodded and said, "Okay."

The salt merchants had already paid him three years' wages, and it was impossible for him to leave Kunshan, at least while Mr. Zhao was the magistrate.

Seeing that both of them agreed, Wan Mi Zhai also nodded casually.

"Okay, it's a deal." Zhao Hao opened the box happily.

The three famous doctors saw that in the velvet-lined wooden box, there stood quietly a strange brass instrument that looked like a lampstand.

"What is this?" The three of them gathered around and looked at the exquisite instrument curiously.

It was more than one foot high, with a copper column cast on a round base, a square anvil on the column, and a small round mirror under the anvil. A cylinder with adjustable height was hung on the anvil.

Yes, this is the world’s first microscope invented by Zhao Wenhaoke... Oh no, Master Zhao.

The structure is very similar to the optical microscope used by middle school students for experiments in later generations, except that it does not have a rotating aperture and objective lens converter.

For Mr. Zhao, who was already able to make binoculars, this was not a technically difficult task. It was simply a matter of turning the design into reality.

It would take Mr. Zhao ten years to make it himself, but he has money and connections.

With the help of his money ability, as long as Master Zhao came up with a concept, Zhao Shizhen would help him draw the blueprints and make models, a professional mirror grinder would grind the glass, and a skilled coppersmith would make the accessories.

He could use the best East China Sea crystals to make lenses of various magnifications to try out, and if they didn't work, he would start over. In order to save time, he could also make several microscopes of different styles at the same time to verify which one was most suitable at the moment.

"This thing is called a 'microscope', and it is an exclusive product of our science department." Zhao Hao caressed the retractable cylinder and said, "This thing can see the big picture through microscopy, and it is the most magical thing."

"Microscope?" Li Lunming twirled his beard and said, "The body and function are from the same source, and there is no gap between the microscope and the microscope. It's a good name."

Zhao Hao also nodded and thought to himself, now that you mentioned it, this name suddenly feels more impressive.

"As I just said, not every snail has parasitic eggs. To save time, I asked the students to prepare a batch of slices first and selected a few with larvae."

Then he picked up a thin piece of glass, carefully placed it on the stage, put his eye to the objective lens, and said while adjusting the focus:

"You can take a look at its appearance first, and then you can make slices of it yourself with the snails, and you will soon find the larvae in it... Of course, you must take precautions, otherwise you will be infected."

"Yeah." The three nodded. They just wanted to see the microorganisms now and didn't want to care about anything else.

"Look." Zhao Hao adjusted the focus and stepped aside.

The three doctors politely gave way to the oldest one, Wan Mi Zhai, first.

Old Master Wan imitated Zhao Hao, put one eye on the eyepiece, and stared with wide eyes.

In the chaos, there were several pear-shaped, bilaterally symmetrical insects covered with ciliates swimming slowly.

"This, is this the poisonous insect?" Old Master Wan got goosebumps all over his body.

"Not bad." Zhao Hao nodded and said, "This is what it looks like after it is magnified three hundred times."

The eyepiece that can magnify ten times, combined with the objective lens that can magnify thirty times, can magnify the object on the glass a full three hundred times!

The larvae of schistosomiasis are between 30 and 80 microns in size. If magnified 300 times, they will be one to two centimeters in size!

Not only can you see it, but you can also clearly see its evil appearance.

"Let me see, let me see!" The two Doctor Lis could not hold back and took turns to look at it. Li Shizhen even drew a sketch of the object on the spot.

The three famous doctors were like children who got a new toy. They couldn’t let it go and would never move away.

Zhao Hao had no choice but to cancel the next trip and asked his disciples to bring two more microscopes. He also distributed them with Eucommia rubber gloves and large masks.

In order to protect the three treasure-level medical scientists, he also provided them with protective glasses.

With the soft or hard Eucommia gum, Zhao Hao even wore rubber shoes, so it was also very reasonable to make rubber gloves and protective glasses.

ps. The first of three consecutive updates, please vote for me! !