Great Tang princess

Chapter 45 The Black Technology of the Tang Dynasty
Seeing Shangguan Wan'er riding a tricycle around the Anfu Hall with a pleasant expression on her face, Li Yuechen smiled at her, but began to think on her own.

This kind of car can walk here because the floors in the palace are all paved with stone slabs, which can be regarded as quite high-end road surfaces.

But if this kind of car is on the official road outside the city, it will become very troublesome to ride.

One is the road surface and the other is the tires. This is a difficult problem in this era.

The road conditions are the most troublesome. Li Yuechen has almost forgotten all the relevant knowledge about cement, and can only remember a few bits and pieces.

But the problem is, even if you think about it, it is almost impossible to use cement to pave roads in this era.

The current Datang cannot afford such a large project.

As for the tires... the natural rubber tree seems to be produced in America?Moreover, natural rubber is not the same as the rubber used to make tires. In this era, this is almost an unsolvable problem.

She herself knows a lot about tires, after all, she often plays off-road motorcycles or climbing bicycles.

I visited the Mitas factory before, and even talked with the designer about the effect I want to achieve.

Because of this, I realized how troublesome it is to only make tires here.

At present, it is not bad to be able to make this kind of iron blessing wheel.

Of course, there is another point, that is, the bearing.

It should not be difficult for craftsmen in this era to make large-sized bearings, but whether they can make bearings for tires is really a question mark.

Another problem is quality. The quality of steel in this era is definitely not as good as that of later generations, and it is rare and hard to find, and the cost is particularly high.

Such an interesting tricycle quickly spread throughout the Anfu Hall.

The two elder sisters Xuancheng and Yiyang also ran out to watch, maybe they also want to try to sit on it, but it's a pity that it was built according to Li Yuechen's body shape, and the two of them would definitely not be able to sit in it.

Seeing Li Yuechen leaning on the pillar of Linbo Pavilion and lowering his head to think, Princess Xuancheng ran over and rubbed her delicate face with his hand.

"What is Chen'er thinking? She looks sad!"

Li Yuechen pouted: "I was just wondering if there is any way to make a better wheel."

"Isn't this wheel okay now?" Princess Yiyang put her arms around her shoulders and asked, "Aren't carriages like this now?"

Li Yuechen didn't speak, just shook his head.

Just thinking about showing Li Zhi a mahjong, it suddenly occurred to him that it seemed to be a table.

In desperation, Li Yuechen asked Xiao He to go to the craftsman to make another square table, and then told her to ask the Shangyi Bureau to prepare a wool felt for herself.

As for today, let Li Zhi take a look at his mistress first.

Having said that, she waved to Shangguan Wan'er: "Come down first, I'll show my parents first, and I'll play for you when I come back."

"Yes!" Shangguan Wan'er agreed and hurried down.

Li Yuechen rode his own small tricycle all the way to Renshou Hall, and all the maids and eunuchs he saw along the way looked over with surprise, and some even forgot to salute.

Of course she wouldn't blame them for this, she hummed a little tune and pedaled the little tricycle all the way to the Hall of Renshou.

Zhang Chengxin, who was guarding the door, saw it from a long distance, and hurried in to tell Li Zhi and Wu Zetian that the princess was coming in a carriage without a horse.

After hearing this, Li Zhi and Wu Zetian stood up and went to the gate of Renshou Hall.

As soon as he came out, he saw Li Yuechen in red, humming an incomprehensible song, riding a tricycle towards here.

Seeing Li Zhi and Wu Zetian coming out, Li Yuechen raised his arms and waved to them, then kicked twice quickly to stop outside the Hall of Renshou.

"Mother and Dad, look, how about this tricycle?" Li Yuechen got off the car and said.

Of course, Li Zhi immediately squatted down to look at the tricycle, while Wu Zetian stared at the ponytail on the back of her head and frowned: "Why is this hairstyle so casual?"

"My child thinks that high bun is too troublesome." Li Yuechen shook his head, "Don't mother think this hairstyle is simple and beautiful now?"

Wu Zetian frowned: "How is this casual hairstyle different from that of the common people?"

Li Yuechen came to her and said with a smile: "Why do you have to pursue a difference in hairstyle? Could it be that such a hairstyle is not a princess? Or, does Grandpa take off this yellow robe and is not a saint?"

"Shut up!" Wu Zetian suddenly shouted, "Wait..."

"No problem!" Li Zhi next to him suddenly turned his head and waved his hands and said with a smile, "Chen'er is right, even if I wear ordinary clothes, I'm still a sage of the Tang Dynasty?"

Li Yuechen hugged Wu Zetian and laughed: "Actually, mother can also try this hairstyle on weekdays, it's very easy!"

Hearing her words, Wu Zetian frowned: "I am the Empress of the Tang Dynasty..."

"That's right, mother is now a queen, can't you relax?" Li Yuechen chuckled, "Grandfather must also want to see what mother's hairstyle looks like, right?"

Li Zhi next to him nodded: "I really want to see it too!"

"Look!" Li Yuechen stuck out his tongue at Wu Zetian.

Wu Zetian didn't want to say anything about Li Zhi's doting on his daughter. After sighing helplessly, he took two steps forward and observed the tricycle in front of him.

Men seem to be very interested in mechanical things by nature. Li Zhi looked around the tricycle, and then shook his head with regret.

"Why don't Chen'er make a bigger one, so I can take you to try it together."

"Eh..." Li Yuechen thought about that scene, but he couldn't bear to look directly at it.

"Grandpa, don't worry, wait for the child to study for a while, and I will definitely make a better one for the two adults!" Li Yuechen said.

Li Zhi nodded: "Well, that would be great!"

It's really hard to say what to say and when it will be made.

Simply speaking, it is actually very easy to build a large tricycle, but again, the problem of tires needs to be solved.

……

After arguing with the couple for a while, Li Yuechen returned to Anfu Hall and began to draw the design of the bearing with a pen and paper.

Still the same sentence, in this era, large bearings can definitely be made, but it is hard to say how small the smallest bearing can be.

Li Yuechen was lying on the table while thinking and drawing. Simply put, it seems that roller bearings are easier to make than ball bearings in this era.

But fixing is a problem. How to ensure that the rollers inside will not rub against each other?

From this point of view, it seems that the ball bearing is easier, just add a simple ball distributor.

As for how to make a sphere... that has nothing to do with my mother, it is a question that craftsmen need to think about.

Perhaps because she was scratching her ears and cheeks, Shangguan Wan'er walked over gently and asked, "Your Highness, would you like some incense? Maybe it can calm you down."

"En." Li Yuechen nodded casually, and continued to draw the design on the paper.

After a while, Shangguan Wan'er came over with a hollow metal ball, and hung it on the pen holder next to the table.

Green smoke curled up from the hollowed-out censer, and the incense inside made Li Yuechen sniffle and glance up.

But with just such a gesture, he was slightly taken aback, and then directly reached out and took the metal ball in his hand.

This small spherical incense burner can be separated into two halves, and the upper and lower layers are combined with a structure similar to a bolt.

But the problem is...

Li Yuechen moved her head closer and opened the latch of the ball, but she saw something that really surprised her.

In a small brass-colored bowl-shaped censer, burning incense was emitting slow green smoke.

And this small incense bowl is actually connected to three successively enlarged metal rings!

Li Yuechen slightly turned the small ball in his hand. No matter how he turned the direction, under the action of gravity, the small incense bowl in the middle always kept its opening upwards, and the incense ash inside would not spill out!

Seeing this obvious mechanical mechanism, Li Yuechen couldn't help but widen his eyes, his pupils trembled!
Good luck!Mechanical gyroscope?

There is such a thing in this era?
Li Yuechen was obviously incredulous, this is not something that should appear in this era at all!

However, the shock that this small incense burner gave her was not over. When she looked at the joint between the two halves of the ball, she found that it was actually a hinge structure!
Although it is the simplest kind, it is indeed a hinge structure!
Nima, are you sure this is the Tang Dynasty?
After finally regaining consciousness, Li Yuechen directly raised his head and shouted: "Xiao He!"

"What are your orders, Your Highness?"

Li Yuechen raised the small incense burner in his hand: "Who made this thing?"

Xiao He replied: "I only know that it is produced by the gold and silver workshop, but who is it..."

"Gold and silver workshop?" Li Yuechen heard of this department for the first time, "Where does it belong?"

"Young House Supervisor."

Li Yuechen stood up directly, rolled up the bearing design drawing he had drawn, waved his hand and said, "Let's go!"

Shangguan Wan'er asked curiously: "Your Highness is angry?"

"Angry?" Li Yuechen grinned suddenly, "Wan'er, do you know what this is?"

"Isn't it the incense burner?" Shangguan Wan'er asked in a daze.

Li Yuechen shook his head, put the hand holding the incense burner in front of her, and said solemnly: "This is a treasure! A huge treasure!"

After finishing speaking, he took Xiaohe and ran out of the Anfu Hall, and went to the Shaofu Prison.

Along the way, Li Yuechen could hardly contain the excitement in his heart, and even started humming a song softly.

After arriving in the imperial city, immediately led by Xiao He to the gold and silver workshop under the jurisdiction of the Shaofu Supervisor.

While walking, he also listened to Xiao He's science popularization along the way, and finally figured out what department this is.

The gold and silver workshop, in a word, is a place where skilled craftsmen from all over the world gather to make various jewelry objects for the royal family.

For example, the sterling silver lotus candlesticks, the hairpins on the heads of all concubines, and the gold and silver plates used to hold fruits at banquets, etc...

The place is not far away, just within the imperial city, and its full name is Gold and Silver Workshop.

Perhaps it is because there are some precious metals here, so there are many heavily guarded.

Seeing the princess coming, everyone along the way saluted.

Li Yuechen is different from the other two princesses, because she often runs into the imperial city, so the people here basically know what she looks like.

When they came to the outside of the gold and silver workshop, the soldier who handles the door saluted: "I have seen Her Royal Highness!"

"Exemption!" Li Yuechen didn't stop, and rushed in, Xiao He also trotted behind.

Liu Jiancheng of the Shaofu Supervisor happened to be here too, and when he saw the princess, he immediately saluted: "Your Majesty has seen Her Highness the Princess!"

"Excuse me!" Li Yuechen raised his hand to pick up the incense burner in his hand, "Please trouble Jiancheng, I want to meet the person who made this thing."

Liu Jiancheng looked up and nodded: "Please wait a moment, Your Highness, I will send someone to call."

After speaking, he brought Li Yuechen into his office and sent someone to serve him a cup of yogurt.

About 10 minutes later, a middle-aged man who looked about 40 years old and dressed in linen plain clothes walked in cautiously.

People in this era generally age faster, and with beards, they look like a little old man.

Li Yuechen couldn't help sighing in his heart, no wonder he could call himself an old man when he was over [-] years old, it seemed normal in this age.

The person saluted immediately after entering: "I have seen Her Royal Highness!"

"Excuse me." Li Yuechen stretched out his hand and raised it falsely, "Do you have a name?"

The other party replied respectfully: "Return to Your Highness, the little old man's name is... Wang Gangdan!"

"cough……"

Li Yuechen almost couldn't help laughing, but quickly rubbed his face, picked up the incense burner in his hand and asked, "You made this thing?"

He raised his head to recognize it, then nodded slightly: "It was done by Xiao Lao."

"Can you read?" Li Yuechen asked.

"Return to Your Highness, I don't know."

Li Yuechen nodded, but still passed the blueprint in his hand: "Can this thing be made? If you don't understand, you can ask me now."

Wang Gangdan looked at the resulting drawing respectfully, opened it, and then looked at Li Yuechen with some doubts.

"If there's anything you don't understand, just ask!" Li Yuechen said.

"Your Highness, do you want to place this small ball in two rings?" Wang Gangdan asked.

Li Yuechen nodded: "Exactly! But don't let them collide with each other, so use a ball divider to fix it..."

After her explanation, Wang Gangdan understood what she was going to do.

"What kind of material does Your Highness want to make?" Wang Gangdan asked.

"Steel!" Li Yuechen replied, "And it must be small enough."

Wang Gangdan raised his head: "How young is Your Highness?"

Li Yuechen raised his head, the distance between his thumb and index finger was only about one centimeter.

"Such a size!"

After finishing speaking, Li Yuechen added another sentence: "If you can do it, this princess will personally ask the saint for you! There will be many rewards! If you can't do it, there will be no punishment!"

Li Yuechen said this to stimulate his motivation. If you can't do it, you won't be punished, but if you do it, you will be rewarded!

Wang Gangdan nodded: "I'm sure about this thing, but I can't make it in a short time. I wonder if Your Highness is in a hurry?"

"how long it takes?"

"Stop talking for half a year." Wang Gangdan replied.

Hearing this answer, Li Yuechen couldn't help being a little disappointed, but still nodded: "No problem, as long as I can do it, this princess will keep her word!"

Wang Gangdan saluted: "Then please wait, Your Highness!"

……

Walking out of the gold and silver workshop, Li Yuechen took a deep breath. He thought that he could make bicycles soon, but now it seems that there is a long way to go.

Xiao He behind couldn't help asking: "Your Highness, what should I do if this thing can't be made?"

"No way," Li Yuechen looked at the sky and smiled, "At least this promise will remain valid for as long as I live!"

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(End of this chapter)