The best old woman is too fierce, stepping on her ex-husband and beating up her traitorous son!

Li Xiaoyue was very happy and went home to start assembling the microscope.

Some parts were made of cast iron and then polished smooth to fit the size she required.

Blacksmith Wang has mastered his skills now, and he can basically make anything Li Xiaoyue asks.

Now start installing the lens and keep debugging.

The lenses currently ground by Craftsman Wang can magnify up to twenty times, which is amazing!

Li Xiaoyue was holding a green onion peel and looking over there.

Li Changan came back from outside and asked his mother, "Mom, how are you today?"

Li Xiaoyue didn't look up. She was looking at her hair. "Today is very good. I have something here specially made for you. Come and take a look!"

Li Changan was slightly startled, with a puzzled look on his face, "What's so good about hair?"

Hearing this, Li Xiaoyue raised her eyebrows, "You'll know when you see it! Just close one eye and look with the other eye."

Upon seeing this, Li Changan came over and looked carefully as his mother said.

I was shocked when I saw it. It was just a piece of hair, why was it so thick?

Li Changan took his eyes away from the microscope and looked sideways. He saw that the hair was still a thin one and returned to the microscope.

"It's amazing, mother, it's really amazing!" Li Changan looked surprised, "Mother, why did you even think of getting this thing?"

Li Xiaoyue smiled and said, "Last time I heard you keep talking about what's in those dirty things, which will seriously inflame the wound and accelerate the ulceration."

"After we use high-strength alcohol to disinfect it, we must have killed something and protected the wound. Only by preventing those things from invading the wound can we prevent inflammation."

Hearing this, Li Changan nodded repeatedly, "Yes, Master and I are very curious, but we can't see it with our eyes."

"This thing can magnify things a lot, and maybe you can see them."

Li Xiaoyue nodded, "Yes, the lens processing is not perfect now."

"If you change the thickness of the lens and some parameters, you can expand it 10 times, 100 times or even 1000 times."

"When the expansion is large enough, you can see even the smallest things. Isn't that right, Chang'an?"

Li Changan nodded repeatedly when he heard this, "Mom, you are so smart. I didn't expect that you would remember all the words I said casually."

"Not only that, you also took action and used your ingenuity to come up with this thing. Having a conscience like you is my greatest luck."

Li Xiaoyue smiled brightly after being praised, "Actually, it's not that good. Let's call this thing a microscope."

Li Changan nodded, "This name is very good. This is really good news. I want to tell the master!"

After saying that, Li Changan ran out happily.

Doctor Liu is summarizing his experience into a booklet and passing it on to his apprentices and grandchildren.

"Master, I have good news here!" Li Changan started talking loudly before he entered the door.

Doctor Liu quickly put down the brush in his hand. It must be a great thing to make his usually calm disciple so happy.

Since Liu Yunde returned to Lihua Village, Li Changan's smiles have become less frequent and his personality has become duller.

Apart from studying medicine, I am not in the mood for anything else.

"What makes you so happy?" Doctor Liu asked with a smile. He had no children and already regarded Li Changan, his apprentice, as his own child.

This may also be his last apprentice in this life, so he teaches very carefully.

Li Changan grabbed the master's sleeve and walked out, "Master, hurry up. My mother has made something good again. I think it will be very useful in improving our medical skills."

Doctor Liu looked puzzled. Besides high alcohol, what other good things did Mrs. Li come up with? Doctor Liu was very curious as it would be good for improving their medical skills.

The master and apprentice came to Li Xiaoyue's study, and Li Changan couldn't wait to show the microscope to the master.

"Master, this is the microscope my mother made. It can magnify very small things. Look at this hair!"

Doctor Liu looked curious and leaned over to take a look, "Ah! It's really grown so big!"

"Master, if you can magnify it enough, you will definitely be able to see smaller substances."

"We have always been confused, why does a wound infected with dirt accelerate the inflammation and suppuration?"

"We've always been curious about what's in the dirt, what's in that pus?"

"If we can see them, maybe we can find more things to kill them in the future and treat the wounds better."

Doctor Liu was convinced, "Your idea is very good! Mrs. Li, is there any way to increase the multiple?"

Li Xiaoyue nodded, "Of course you can, but you need to grind better lenses."

"I want to collect more transparent jade, otherwise there will be too many impurities, so don't interfere with your sight."

After hearing this, Doctor Liu thought for a while, "Although there are no lenses that are clear enough, existing lenses will do. Although there will be impurities, we can identify them ourselves."

"The most important thing now is to make a microscope with a higher magnification first. Mrs. Li is now busy!"

Li Xiaoyue nodded, "Okay, I'm having someone grind the lenses right now. I'll call you over when it's done."

Doctor Liu touched the microscope and couldn't put it down. He really wanted to move away now.

After all, this is Mrs. Li's study, and it is not suitable for him as a foreigner to stay here.

Seeing what Doctor Liu meant, Li Xiaoyue smiled and said, "Doctor Liu, don't worry! Once I adjust it, reduce the error, and calculate the correct multiple, I will give this to you."

“After all, it’s my first time doing it, so there are a lot of areas that need improvement.”

Hearing what Li Xiaoyue said, Divine Doctor Liu smiled and said, "Okay, I'll wait for you, Mrs. Li, to adjust it. Only by constantly changing can we continue to improve."

"I happen to be very busy these days. I want to write down my experience over the years and some effective prescriptions and pass them on to Chang'an in the future."

Hearing this, Li Xiaoyue's eyes lit up, and she thought of something that would benefit the country and the people.

Typography.

Doctor Liu's medical books were published and passed down.

Block printing is more wasteful, while movable type printing is more economical.

However, she only knew the principles of movable type printing and did not know how to burn movable type and some related materials.

It seems that she has to spend more money and invest more in finding someone to do research for her.

As long as there is money, someone is willing to develop it.

Just like Master Craftsman Wang and his apprentice, they have made great progress now and are able to complete tasks according to her requirements.

Li Xiaoyue didn't think about it, that's all. When he thought about it, he took out all the useful things in his memory.

Even if it is rough at the beginning, there will be more smart and powerful people in the future, and the research and development will be passed down and benefit more people.

Li Xiaoyue knew that doing so would be more valuable, and her trip here would not be in vain.

Even in the book, she wanted to live a more fulfilling and meaningful life. (End of chapter)