Li Feier shook her head and said slowly, "No, it's the book in my brother's study. I read it when I'm fine. Actually, I don't understand the many names in the book. I often read the study materials in my brother's study, so I memorized them. I don't understand the principles at all. My brother said that he said professional things, and there are professionals who do it, as long as he understands the principles by himself."

After hearing this, Changsun said again with envy: "Your brother will definitely train you to be a great scholar in the future."

After hearing this, Li Feier shook her head and said with joy: "That won't be the case. My brother said that in the future, I can not only cultivate myself and cultivate an elegant temperament."

Changsun was speechless after hearing this. You are so beautiful that you are no longer in the world. You still need to cultivate an elegant temperament. Don’t you make us jealous?

Looking back at the third sister who seemed to have not heard their conversation, I didn’t know what I was thinking. I didn’t know what family Li Yu would cultivate his third sister into in the future.

Li Xiuning looked at the liquefied gas stove for a while and turned around and asked, "Do you have any other treasures in your brother?"

Li Feier bit her fingernails and whispered: "A lot, but my brother won't let her enter his study. She said that some things would be dangerous. Without my brother's guidance, I wouldn't dare to go in."

Li Xiuning blinked and said, "Let's go and take a look now. If we don't move his things, just see how it is?"

After hearing this, Li Feier nodded and agreed: "Okay, I want to see the phonograph made by my brother too."

After listening to the conversation between the second daughter, Changsun quickly stopped him and said, "It's not good for third sister to do this! What if Zhao Fei'er said is dangerous, it will be troublesome?"

Li Xiuning waved her hand indifferently and said, "If you are afraid that you are waiting for us here, we will go and see it and don't move around. What can happen?"

After hearing this, Li Fei'er said in agreement: "Yes! My brother said that the things in his glass bottles should not move around, for fear of danger, but other things will not be in danger."

When Changsun saw the two of them singing and reconciling, he was speechless and had to follow them to Li Yu's study on the second floor.

The three girls quietly came to the study.

I saw a lot of mahogany bookcases neatly placed in the huge study room, and there were different categories of books in the bookcases. Changsun and Li Xiuning glanced at them and found that there were too many books here. The category said, chemical engineering, physics, natural science, medicine...

They are all new books they have never seen before, and these new books are beautifully printed.

"Oh my god, these books are simply unheard of. Although I can't understand the contents of the books, I feel that these are all great questions." Changsun excitedly flipped through several books and said in surprise.

"This bastard, he said before, he has thousands of times more books. It seems that this guy is really not lying?"

Li Xiuning also read a few books. Then she remembered what Li Yu said to scare Li Fei'er.

When Li Feier heard the conversation between the two, she just smiled. She knew that the study room downstairs was much larger than this study room. Her brother had not yet taken care of the Dragon and Phoenix Empire to select books. If they saw the books in the study room on the first floor in the future, they would not know what shocked them.

The second woman put down the books in her hand and then looked at the entire study. Most of the study was filled with various books. Only a few iron racks were placed in the corner building, and there were many bottles and jars made of water jade on the rack. There was a table next to it, and they didn't recognize the things on it.

The two girls understood that the things Li Feier said were not allowed to move, which should be those things.

"What's that Fei'er's thing? She looks so weird!" Li Xiuning pointed to a white cylinder made of iron in front of the window and asked strangely.

"What you are talking about is an astronomical telescope. You can see far away places and you can see a lot of things on the moon at night." Li Feier pointed to the astronomical telescope and explained.

After hearing this, Li Xiuning exclaimed: "My God! That's the truth that I've never seen it, I have to see what Qianliyan can see?"

After being surprised, Li Xiuning quickly asked Li Fei'er to teach herself how to use the astronomical glasses.

Things that could not be seen with the naked eye were suddenly pulled closer and instantly came to his eyes. The small things that were far away could be seen clearly. In addition to being shocked, Li Xiuning also made a discovery in his heart.

Changsun also looked at it for a while and sighed inwardly how these things were made? Everything I met today seemed to have a dream.

Li Feier took a few magnifying glasses on the shelf and put them in front of her for Li Xiuning to see.

Li Xiuning couldn't help laughing when she saw Li Fei'er using a magnifying glass to make her eyes bigger several times.

When Changsun saw that his eyes were enlarged by a magnifying glass, he was also amused and laughed.

Li Xiuning took the magnifying glass and looked at the palm lines on his palms. Seeing that the palm lines that had been enlarged many times, she was so excited that she smiled and said, "When I first met your brother, your brother told me that it was possible to enlarge objects hundreds of thousands of times with high-definition glass. I thought it was said that it was true that the Heavenly Book was talking about.

After listening to Li Xiuning's story, Li Feier quickly pointed to the microscope and said, "You are talking about a microscope! You see, that's a microscope."

When the two women were about to look at the microscope, they heard the sound of pushing the door.

Li Yu pushed the door and said, "Li Fei'er, didn't I tell you that this room cannot be entered randomly? What if there is a danger? You are really disobedient and come out quickly."

"I didn't move your stuff, I just wanted to see the phonograph." Li Feier said with a pout.

Li Yu's tone slowed down and said, "I'm not telling you that the materials are not solved yet, and the phonograph technology is not yet mature. I'll wait for a while and you can do as many units as you want."

Li Yu was helpless. The technological development of the Dragon and Phoenix Empire was very unbalanced. Even the backward phonograph technology has just been developed, and it will take some time for the record technology to be solved.

"Yeah! I'll listen to my brother." After saying that, he looked at the phonograph reluctantly.

When Li Xiuning saw Li Feier's reluctant appearance, she felt that it must be a fun thing. She immediately pointed to a trumpet-shaped thing and asked, "Is that phonograph?"

"Yes! But the recording materials are not yet mature, and the recorded sound can only be played a few times and it will be scrapped." Li Yu nodded and said.

When Li Yu saw Li Xiuning's appearance, he wouldn't be able to leave if he didn't explain it carefully today and didn't let her play for a while.

Li Yu walked over and took out a piece of tin foil, rolled it on a metal cylinder engraved with spiral grooves, let one end of the needle gently rub against the tin foil, and connect the other end to the receiver. Li Yu shook the crank.

Li Yu picked up the receiver and said, "Li Xiuning, you can speak to this receiver and wait for a while and you will leave your voice behind."

Li Xiuning took the phone in confusion and asked casually: "Then, what am I talking about?"

Changsun asked with an incredible look: "Can this machine Li Yu really keep our words?"

Li Yu answered the conversation and quickly said, "Of course, you guys speak quickly, otherwise the recording will end in a while."

"Then what should I say!"

"Singing is OK, it's up to you."

The few people said a few more gossips, and the tin foil was recorded to the end.

Li Yu put the needle back to its original place, and Li Yu shook the crank again. Then, the phonograph turned around in a circle.

"Then, what am I saying! Can Li Yu really leave the words? Of course, speak quickly or you will be recorded in a while. What do I say! Singing is OK, it's up to you..."

The sound from the loudspeaker was exactly the same as what they said just now.

"It, it actually...can learn from us..." Li Xiuning and Changsun were so surprised that they couldn't speak. Li Fei'er had seen it, but she still looked at the two girls excitedly and was surprised.

Li Yu felt that the person who had been exposed to the phonograph for the first time did not show this, which means that this person was abnormal, or he was like himself, and had seen this thing before.

Li Xiuning came back from the shock and laughed: "My God, I really kept the sound. It's so fun. Listen to it, hurry up..."

Li Yu had no choice but to put the needle back to its original place, and Li Yu shook the crank again. Then, the phonograph... said what he had just said again.

...

Li Xiuning was happy to hear it, and knocked Li Yu away, started the operation by himself, and listened to the recording on the tin foil several times, but it stopped making sounds. He was in a hurry.

"Why does it stop talking? Is Li Yu broken? Is it stop talking?" Li Xiuning asked anxiously, asking Li Yu to repair the phonograph as soon as possible.

(The second update, today is updated here, hey! Two hundred chapters, the results are still like a trash curve. Don't worry, I will insist on writing the Tang Dynasty chapter.)
Chapter completed!