After all, it's a child, so it's going to be idle all day.

It's not ......

When it came to the next Xiu Mu, Li Chong also quickly found his Aya's bedroom.

Talking to him Aya only a child would say, "Aye, when will I marry the imperial concubine?"

Li Chun was also extremely curious, "What are you asking for?"

Li Chong said, "I'm just curious, also, can I pick this imperial concubine myself?"

Li Chun: "Uh......"

Li Chong: "I've heard others say that the princesses and grandchildren are all decided by adults, so what if I don't like it?"

Li Chun: "How can you not like it? Adults will definitely be selective and give the best to the best."

Li Chong: "It's just that you like it, Aye, but it may not be that I like it."

Li Chun: "Ahem! Then you don't believe you, Aye, and me?"

Li Chong: "It's like, Aye, what do you like to eat, but I don't like it. So when the time comes...... Can I choose for myself?"

Li Chun: "Choose for yourself?"

Li Chong: "Aye, you can prepare a few later choices, and then I will choose from them."

Li Chun found that Li Chong was becoming more and more assertive.

But......

That doesn't seem like a bad thing.

And......

He was already nine years old.

That's how it should be.

Then he nodded and said, "Okay!"

Then......

Li Bao'er also happened to come in, and as soon as she came in, she immediately heard "okay", so she didn't see anyone, but heard her voice first: "What's okay? What are you talking about?"

Today, Li Bao'er just casually wore a relatively ordinary palace dress.

But even so, it still can't help but make people's eyes shine.

Li Bao'er held a small fan in her hand and walked in directly without notice.

In fact, it should have been reported first, but it was just ......

After all...... It's intimate, so sometimes, it's more casual.

"Sister, why are you here?"

As soon as he saw Li Bao'er, Li Chong immediately said.

"If you come, can't I come?"

"You haven't reported yet."

Li Chong said to her.

"I was here to surprise Aye, so I didn't tell you."

"What surprise?"

Li Chun then said.

Li Bao'er glanced at Li Chong and sighed, originally wanted to talk to Aya secretly, but it turned out that he was fine, and he also came.

Then he said, "This matter has something to do with my brother."

"Huh?"

Li Chong also frowned in confusion.

Li Bao'er said, "Aya, the Academy of Sciences has made a new breakthrough."

Li Chun also came to the spirit immediately, "What breakthrough?"

Li Bao'er: "I guess it won't be long before a four-wheeled car can be made."

Li Chun: "That's what you kept talking about for the first two years?"

Li Bao'er: "Yes!"

Li Chun: "How is this solved? I've thought about it too, but it's really not as good as the craftsmen in the Academy of Sciences."

Li Bao'er used the corners of her mouth to nude towards Li Chong.

This made Li Chun's face a little surprised, and said, "You mean your brother?"

Li Bao'er said, "Yes, he invented the differential."

Li Chun also continued to look at the two of them with a puzzled expression.

At last......

Seeing that Li Bao'er didn't seem to be joking, he finally asked Li Chongdao, "Is there such a thing?"

Li Chong also looked unconcerned, "I just tried it casually, but I didn't expect it...... It seems like it really works."

Li Chun: "......"

"Someone! Go get that differential and take a look."

Li Chun then said.

It's been a long time again.

It's almost noon.

The differential was just moved.

I moved with the whole car.

Li Chun: "Take Aya and see which one is the differential."

Li Chong looked at the car, which was not much bigger than the rickshaw, and also squatted down and pointed out the differential to his Aya.

Li Chong: "This is it."

At this point, the differential was already available in a simple package.

Li Chun also lowered his head and looked at this thing.

The man who drove over asked, "Can this car be driven now?"

"Yes."

Li Chun sat down and taught me how to drive.

Followed by......

The craftsman explained how to operate it one by one.

Li Chun estimated that when he was young, he also tinkered with these things.

So......

It doesn't seem strange at all.

Even, it looks very skillful.

After a while, the method of manipulation was fully mastered.

It's this steering wheel, to be honest, I feel that Datang really has no innovation at all.

It turned out to be a straight handle to use.

That is, it is similar to the handlebars of a bicycle to steer the direction.

Cough!

Unexpectedly, you gnawed on a hundred years old.

Li Chong really didn't want to complain.

After trying it, Li Chun can also feel it, how to say it, the steering wheel feels a little difficult, and the other problems are not very big.

And......

In turning, it is possible to achieve a certain degree of sharp turns.

If you had put this in the past, there would have been a good chance that the car would have flipped over.

But after changing to four wheels, people can clearly feel it when sitting in the car, even if your body has a tendency to fall to the side, but the car feels unlikely to fall.

Li Chun: "It seems that this is really possible!"

It can only be said that Li Chun at this moment does not look like an adult at all.

Driving the car is shouting.

"Chong'er, do you want to come up and try it?"

Li Chong hurriedly waved his hand, "No, it's better for Aye, you can play by yourself."

Li Chun felt bored at this time.

Afterwards......

Slowly stopped.

Only then did he study the differential carefully.

"Chong'er, what is the principle of this differential?"

Li Chong: "I don't know."

Li Chun said, "I don't know, can you invent it?"

Li Chong: "I just think about it, in fact, I didn't know if it would work at first, Aye, if you don't believe it, you can ask Xiaoxiao."

Xiaoxiao actually didn't know so much, she just watched Li Chong messing around there, anyway......

She didn't quite understand it either.

But since His Highness has said so, she can only say that she can just go along with it.

He said, "That's so, and ...... It took His Highness almost a whole spring to make it."

Li Chong said again: "I also went to ask Sister A, how to make gears."

Li Chun took a deep breath, stared at Li Chong, and reasoned, Li Chong was really afraid of being discovered by him.

Until Li Chun said, "Is it possible...... My son is really just like Li Chong a hundred years ago, a genius?"

Li Chong had no choice but to show embarrassment, "I'm far worse than him, Sister told me about him, so I know everything."

"Oh? And what do you know?"

"He's got a lot of princesses!"

「……」