At this time, in Zhu Yuanzhang's own bedroom, he was watching the newly rehearsed song and dance of the court musicians, the song of neon clothes and feathers.

Suddenly, he said to Queen Ma next to him.

"Girl, every time we watch the song and dance, we always feel a little regretful, you know what's going on!"

Queen Ma was also speechless for a while, and said immediately.

"I'm not a roundworm in your stomach, how can I know what's going on, you just have to say anything, and when the time comes, I'll give you a good look."

Zhu Yuanzhang nodded, and then he said.

"Actually, we always think that some music still sounds good, but when I listen to it a second time, it doesn't taste like that."

Queen Ma also felt the same way at this time, so she comforted Zhu Yuanzhang and said.

"Even the best bands and musicians will always make mistakes, so it's inevitable that you can't keep the sound."

At this moment, Lu Ning walked in outside, and he came to greet Zhu Yuanzhang.

"Father, my son just went to Xi'an, I had a good chat with His Royal Highness King Qin, and I came back this time to ask my father to say goodbye, and then I went to run the domestic goods department."

When Zhu Yuanzhang saw Lu Ning coming, he told him about his troubles just now.

Lu Ning smiled indifferently, and opened a box casually, which was something similar to a small box, and there was a small horn outside.

Then, he told Zhu Yuanzhang.

"Father can summon that musician and play the piece again, and the son will have a miracle for you to enjoy."

After the musician played the song again just now, Zhu Yuanzhang asked him to retreat first, and then asked Lu Ning.

"Zi'an, now that the song has been played again, you said that there would be any miracles for us to see, let's wait and see."

Lu Ning smiled, and then he pressed the button on the small box.

The music was played again, and the sound quality was very good, almost identical.

Seeing Lu Ning's operation, Zhu Yuanzhang simply widened his eyes.

What the hell is going on? It's just too jaw-dropping.

"Zi'an, tell us what kind of thing this is, it can't be a magical thing from heaven that can keep the sound!"

At this time, even Queen Ma next to her felt a little speechless after hearing Zhu Yuanzhang say this, and said.

"You, the emperor, are going back the more you learn, our children have invented so many things, which time didn't it open our eyes, why did it go to heaven again."

So, Lu Ning arched his hand again and said to the two.

"Father, mother, in fact, this thing is very simple, it is called a tape recorder, that is, the human voice can be recorded, and then it can be played, this is something that Erchen has just developed."

After Zhu Yuanzhang listened to Lu Ning's explanation of the tape recorder, he was instantly excited and said immediately.

"A rare thing like this, if it can be mass-produced, it will definitely be able to sell at a good price in the domestic products department, you can rest assured, as long as the household can make money, you can also get a dividend of 20%."

Lu Ning nodded, it didn't matter how much money he took.

He is now the king of Changning County in the imperial court, and he has achieved the title of wife and son, and he doesn't care how much money he can have in his family.

"Father, please rest assured, after the son goes back, he will draw the drawings and then hand them over to Fu Bo for mass production, presumably after this batch of tape recorders is sold, it will definitely allow the household to achieve short-term fullness."

After Lu Ning said this, Zhu Yuanzhang instantly became happy, and he said immediately.

"Zi'an is really our good son, he can share worries for the country, we will never forget your contributions, since you are not willing to be promoted to the title, we will give you another duke."

Lu Ning was stunned suddenly, he didn't know what Zhu Yuanzhang meant, and he didn't speak for a while.

At this time, Zhu Yuanzhang explained to him very solemnly.

"You don't have to worry about anything, what we mean is actually very simple, your eldest son Lu Zhao is the son of King Changning, the second son Lu Ye is the hereditary prince of Fuguo, and your other wife Lan Xiaoya has not yet given birth to a child, and when she also has a son, she will be named the hereditary protector."

Lu Ning was immediately scorched by Zhu Yuanzhang's words, after all, this is the grace of heaven and earth.

It is absolutely impossible to put it on any meritorious person, but this grace falls on oneself.

You must know that even those battle-hardened veterans, such as Lan Yu, have not yet been crowned dukes, and their own family is already a prince with a duke.

If even the unborn son is promising a duke, then the family background is prominent, and I am afraid that no one in the Ming Dynasty can match it.

But because of this, Lu Ning couldn't just agree, he said immediately.

"The father's grace to his son, the son is naturally grateful in his heart, but I already have a prince and a duke in my family, and now I promise a duke, wouldn't it be discussed by the people."

Zhu Yuanzhang shook his head and told him very solemnly.

"According to your merits, I'm afraid that it is enough to crown a prince, but we are afraid that people will take you as a target, so we didn't add your own title so quickly."

Lu Ning was humble to Zhu Yuanzhang for a while, anyway, he couldn't accept this grace anyway.

In the end, Zhu Yuanzhang could only agree to come down and put the matter on hold for the time being, and talk about it later.

However, with the new gadget of tape recorder, Zhu Yuanzhang is naturally a dragon-faced Dayue.

He was going to hold a huge court banquet, so that all the foreign vassal kings would come over to enjoy the new technology.