Great Tang princess

In the blink of an eye, a month had passed since the Supreme Emperor returned to the palace, and the time had come to the hot summer.

People who were already hot in May began to feel irritable, and Li Yuechen, who was staying at home, also put on a silk cheongsam and lay on a rocking chair by the pond to enjoy the cool.

Of course, it is not called cheongsam nowadays, it is called princess gown, and many aristocratic women will wear this when they are not going out at home, after all, it is very cool.

But it may take at least a few decades before the distance can be worn to the street.

Although Li Yuechen didn't care about those things, he was also unwilling to challenge the customs at will, so he would wear this kind of clothes at home instead of going out on the street.

Now the car has officially started production, and the twin-cylinder engine dedicated to motorcycles is also under intense production.

Recently, she doesn't have to run around too often, as long as the design of the motorcycle is done before the engine is finished.

But this is what makes Li Yuechen feel more difficult.

The frame of a motorcycle is actually not difficult to make. Even with the support of these handicraft masters, the frame and shock absorber can be made stronger than the cars on the future assembly line.

If you really want to make a prototype car regardless of the cost, it is enough to use it directly for extreme sports.

The real trouble is in the shell.

The body of the motorcycle has the function of diverting air and reducing wind resistance, followed by the problem of appearance.

Most of the car shells in the future will be made of engineering plastics, and plastics are a kind of polymer, which cannot be made so easily.

In this era, wood resources are plentiful, but the problem is that the wood itself is very heavy, and once it is made into planks, it is not only troublesome in plasticity, but also poor in impact resistance.

Considering that this motorcycle will be given priority to the troops after it is made, so the body should not be too brittle and must have a certain degree of protection.

So there are two options left, either directly attach the metal shell, or discard the shell and make it look like a 80s and [-]s motorcycle.

The big deal is to install a few more anti-fall bars on both sides, which is very simple.

Li Yuechen, who was lying in the pavilion, was thinking while blowing the breeze from the pond.

At this moment, suddenly a guard ran over in a hurry: "Your Highness, the Supreme Emperor has arrived! He is already outside the gate!"

"Ah?" Li Yuechen raised his head, and his mother suddenly came over?
In such a dazed effort, a group of people had already walked in through the gate.

The palace lady walking in the middle held a parasol to block the scorching sun for the Supreme Emperor.

The Supreme Emperor came to his daughter's house, so naturally he didn't need to wait for the notification, so he just came in directly.

Li Yuechen quickly jumped off the deck chair, put on his clogs and walked towards her.

"Auntie came here at noon..."

"Why? Why can't I come to your princess mansion for lunch?" Wu Zetian asked back with a smile.

"Of course there's no problem!" Li Yuechen smiled, and quickly helped her walk to the main hall.

Seeing this black and white cheongsam, Wu Zetian sighed: "Sure enough, it's like this again in summer..."

"I can't help it, it's too hot." Li Yuechen smiled and took her into the main hall to sit down, "But why doesn't Auntie stay in Shangyang Palace? It's cooler over there."

"Xian'er calls from time to time, and I'm getting a little irritable." Wu Zetian waved his hand and said.

Sure enough, the answer was not at all unexpected.

In the first few days when he came back, his mother was kind and filial, and Li Xian was a filial son, basically calling his mother every day to chat.

Faced with such a novelty as a telephone, Wu Zetian was naturally full of interest at first, and was willing to talk more with his son.

But after a week, I started to get bored, and it felt like this thing was just like that.

Not only that, but the time it takes is also troublesome.

After all, how can there be so much to talk about?
It was the same today, I was really annoyed and flustered, and suddenly thought that I hadn't been to the Princess Mansion for a long time, so I decided to come and have a look on a whim.

If my mother wants to come and see me, of course there is no problem.

Li Yuechen asked Xiaodong to make tea, and then asked two maids to come over to help fan the wind, so that his mother could cool off first.

Then I chatted about my life outside during this period, such as how life in Zhenzhou was like.

"It's not cold in Zhenzhou, but the weather is so humid, it's not very comfortable..." He even frowned when he spoke.

It seems that my mother really doesn't like wet places very much.

"Fortunately, the seafood is abundant and the scenery is pleasant, so it's a good place to relax." Having said that, a smile appeared on his face again.

Li Yuechen watched his mother's expression change when she spoke, and couldn't help showing a smile.

It seems that after retiring from the position of emperor, she is no different from anyone else despite all the aura and pressure.

Just an ordinary old lady, yes, still an ordinary person.

To be honest, Li Yuechen really liked seeing her like this, at least it seemed very real.

The only pity is that this truth was revealed too late, and now she is an old lady in her 80s.

……

The mother and daughter chatted while drinking tea, while Li Yuechen was thinking about what to have for lunch.

I have been in Zhenzhou for too long, and I must be tired of eating seafood, so I thought about asking the kitchen to make some donkey meat for lunch today.

While thinking about it, Xiaodong suddenly came in to report: "Your Highness, the people from the Engineering Academy have come and said they have something to report."

"Ah? Tell him to come in." Li Yuechen agreed.

Wu Zetian asked with some doubts beside him: "Have you researched any new artifacts?"

"Who knows... just ask for details." Li Yuechen picked up the teacup and replied, and at the same time picked up a piece of silk from the side to cover her lap.

After a while, a young man in a camouflage uniform walked in and raised his hand in salute: "I have seen the Supreme Emperor! Your Highness!"

"Excuse me, what's the matter?" Li Yuechen asked.

"Back to Your Highness, the Academy of Engineering has made a new object, and I would like to ask His Highness to take a look and see if it can be useful."

"Okay, let's talk about it first, what is it for?"

The young man thought for a while: "It was made by Dean Pei. According to the reverse research of the air tube that inflates the tire, as long as you pour some water in it, the air in the tire can be pumped out..."

"Damn it, vacuum pump?"

Li Yuechen jumped up from the chair all of a sudden, walked quickly to the young man, and asked excitedly, "Have you finished?"

"This... Yes, Dean Pei has already tested it, and it can indeed work. It is said that the principle is based on the compressor being made..."

"Okay, okay, let's not talk about this for now, you go back and tell him, I will go and have a look in the afternoon." Li Yuechen patted the other party's shoulder.

It never occurred to him that this Pei Bishu was really a genius, and he even came up with a vacuum pump.

If this were true, then things like light bulbs and tubes could be arranged.

And this is all knowledge learned in junior high school physics, relatively speaking, it is not difficult, but it can play a huge role in this era.

……

After the other party left, Wu Zetian asked, "What is the vacuum pump?"

"It's hard to say whether it's exactly what I think, but if it's true, then the phone call distance can be extended a lot, and at the same time, the kerosene lamp can be completely discarded." Li Yuechen replied.

Wu Zetian nodded pretending to understand, "How about going over there this afternoon for my mother?"

"Okay, Auntie, if you are interested, go with me."

So after having lunch, the mother and daughter rested for a while, and then drove to the Engineering Institute.

Originally, he didn't intend to drive, but his mother seemed to be interested in this, so Li Yuechen followed her.

The reason why I don't want to drive is that it is too small to fit so many guards, and the speed is too fast, so I will lose touch with the guards.

But since my mother likes it, then just listen to her. Anyway, I have myself here, so I don't have to worry about meeting an assassin.

Not to mention that there are guns in this car!
All the way to the Engineering Institute, Pei Bishu had already been waiting at the door, and came to greet the car when he saw the car coming.

"I have seen the Supreme Emperor! I have seen Your Highness!"

"No, no, I heard that you made a vacuum pump, so hurry up and take me to have a look." Li Yuechen looked impatient after getting off the car.

Naturally, Pei Bishu didn't dare to neglect, and led the two of them into the laboratory.

There is a brand new machine on the table, the wires are connected, and the sound of the rotating wheel can be heard at the same time.

And the machine connects the two hemispheres where Li Yuechen did the experiment through a rubber tube.

At this time, the apprentice next to him reached out and screwed on the valve on the hemisphere, and then turned off the machine.

One hand grabbed the hemisphere and lifted it up, and the other half stuck to it tightly and did not fall off.

"Come and try this palace!"

Li Yuechen walked over, took the two hemispheres that had drained the air in his hands, and then pulled them apart with both arms.

However, the two hemispheres were firmly attached together, no matter how hard Li Yuechen tried, he couldn't pull them apart.

Seeing this scene, Wu Zetian also felt his eyes opened. This daughter of hers has always been known for her infinite strength, but she never expected that there are things that her strength cannot do.

But Li Yuechen was obviously very happy, because this was indeed a vacuum pump!

This result made Li Yuechen very happy, and immediately gave an order: "With this thing, you can try electron tubes and light bulbs. Ask someone to collect tungsten!"

"Your Highness, what is this...?" Pei Bishu asked.

"You don't need to tell the outsiders too much, just let them send all the unburnable metal!" Li Yuechen replied.

The melting point of tungsten is above [-] degrees. Except for the engineering institute, outside craftsmen absolutely do not have the ability to melt this thing.

It's just the specific method of this light bulb... Although there is a simple outline in junior high school physics, it is also difficult to replicate in this era.

Therefore, it is necessary for the people of the Academy of Engineering to meet some preconditions first.

……

Today, because I took my mother with me, I didn't stay in the engineering institute for too long. After taking her to see the cars, trucks, and trains and planes that will appear in the future, I went back first.

On the way back, Wu Zetian kept asking about the difference between airplanes and airships.

And how much cargo can the train transport and so on.

Li Yuechen also patiently explained to her, giving her an idea of ​​it.

Because in the plan, these things are coming soon.

From the next day, Li Yuechen started to go to the engineering institute again, discussing with the craftsmen how to get the electron tube out first.

Of course, it's not a very advanced thing, it's the most basic kind in junior high school physics textbooks.

Now that we have the conditions for vacuuming, it should not be difficult to make this thing.

With this, the call distance is extended, and the emperor can even call most of the ministers' homes directly.

The most critical issue is that the electronic tube represents the possibility of the emergence of radio, and it may be possible to make a radio in this era.

But Li Yuechen didn't think so far yet, so let's figure out the basics first.

It is estimated that it will take decades to complete the farm tool revolution alone.

At the same time, I did not forget to guide them on the frame of the motorcycle and the position of the engine, etc.

……

And just when Li Yuechen entered a busy period, Li Chongrun actually took Lu Yao to Qingdao to see the sea, and took half a month off at once!
If he hadn't always been treated as his son, this fake Li Yuechen would never have approved him.

In order to fulfill his promise to take his wife to see the sea, Li Chongrun practically begged this aunt on his knees in the princess mansion.

In the end, Li Yuechen patted him on the shoulder: "Forget it, I can give you this half-month vacation, but there may be no such opportunities in the future."

"Eh... what does auntie mean?" Li Chongrun said that he didn't understand.

"You are the prince, no more than others. After you come back, you should prepare to take over the position of Minister of War. You will be busy in the future!" Li Yuechen said with a smile.

"Ah?" Li Chongrun was taken aback for a moment, then took two steps back subconsciously, "Well, my nephew is still young, and the position of Minister of the Ministry of War is still my aunt..."

"Don't try to shirk it, it will be a matter of time. I will be 40 next year, and I can teach you more while I am still full of energy."

Li Chongrun shook his head: "My aunt is the best in the world, she is physically strong, not to mention forty, even fifty..."

"Okay, instead of flattering, let's enjoy the vacation." Li Yuechen smiled, "I'll come back and prepare for half a year, and after the new year, it's time to take over the Minister of the Ministry of War. After almost ten years of training, I should be enthroned... "

"It's too early!" Li Chongrun shook his head like a rattle, "In another ten years, my nephew will only be 30 years old, so it's too early to ascend the throne."

"Look at your grandpa's appearance. He is not suitable for sitting in the dragon chair for a long time. He can't wait to abdicate as soon as possible. In short, the responsibility on you is very great..."

Li Chongrun was quite shocked by this conversation. It was really unexpected that my aunt had thought about the problem for so long.

But this time, he also learned a lot. After he figured it out, he could understand her.

So in the end, I let go of the pressure in my heart and took my wife to Qingdao to enjoy the holiday. At least I will be busy for many years in the future, so let's enjoy this holiday with my heart.

Li Yuechen told him this to prepare him mentally. After all, he is the crown prince, so he can't start to drive ducks to the shelves at that time. (end of this chapter)