The group arrived at the Ministry of Science and Technology, where many researchers were calculating. Everyone is very attentive, and that's a good thing!

When they saw Li Chengqian's appearance, they stepped forward together and saluted.

"Meet His Royal Highness the Crown Prince and the Crown Princess! Two princes! ”

"Let's all be exempt!"

Li Chengqian waved his hand, and everyone here was very grateful for Li Chengqian's existence.

It can be said that without Li Chengqian, there would be no happy life for them here, and their lives have undergone tremendous changes because of Li Chengqian. His family has prospered and entered the well-off early.

"His Royal Highness the Prince, the concubine is puzzled, what is a train?"

Wu Zetian asked, Li Chengqian didn't deserve to be too specific, and only said: "It's like a box that can move by itself, people can sit in the box, and the box can take people to move quickly, it can take people to any place, and people are very comfortable in it, it is an existence that can travel three thousand miles a day!" ”

Three thousand miles? It is a territory as large as the horizontal of the Tang Dynasty, which can be reached in one day, which directly refreshes everyone's cognition.

With the current design, 60 kilometers per hour is probably not a problem, 3,000 miles, 1,500 kilometers, 60 kilometers an hour, you can reach it in one day.

Xue Rengui said: "If that's the case, then the minister wants to see it!" Have a good experience. ”

Su Lie even said so: "The minister also wants to see!" ”

More than two people are curious, Wu Zetian is also like this, and he has to go and see what he says.

"Good! Third brother and fourth brother, you lead the way, let's go and see together! ”

"Yes!"

Li Ke and Li Tai immediately led everyone outside.

When they reached the outside, a huge steam train appeared in front of everyone.

A large number of people were on the side of the train, calculating everything.

As soon as they saw the appearance of the prince, they saluted one after another.

His eyes were filled with gratitude.

I'm afraid there is no one like Li Chengqian.

The news of Li Chengqian's arrival came all at once.

Everyone rushed over!

Laiji also trotted all the way.

"I've seen His Royal Highness the Crown Prince!"

Seeing that Laiji's eyes were a little dark, it can be known that he has slept well for a while, otherwise he would not have today's results.

This person can't be used badly, they are the hope of Datang's future.

So Li Chengqian took out a small pill from his pocket.

Hand it to him: "Eat it!" ”

Lai Ji didn't even think about it, and swallowed it directly.

With this eating, the whole person instantly became a hundred times more energetic.

"It's ...... What medicine and why is it so magical! ”

Not only is it mental, but even the dark circles under the eyes have faded a lot.

And Li Chengqian then took out a bag of pills and said, "Soak this pill in water and let everyone drink it!" Thank you all these days! ”

Seeing the appearance of the train, Li Chengqian was still very excited, and he couldn't help but reward everyone.

These pills soaked in water can directly enhance everyone's resistance and prolong life.

"His Royal Highness Prince Xie!"

"Alright, you can take us up and have a good experience!"

"Yes!"

Li Chengqian said again, and Laiji hurriedly invited everyone onto the train.

This train has only one carriage and one locomotive, which still looks a little shabby, but it is good to have this.

Before Li Chengqian crossed over, he had taken a bullet train or an airplane, but he had never taken a steam train, and he didn't know what it was like.

A group of people waited for the train, which made everyone feel incredible, the train that looked bad on the outside, the decoration of the time was very luxurious, all made of leather.

They did this, probably to curry favor with Li Chengqian!

No matter how simple the outside is, you can't make the inside unbearable, otherwise it will not be good if the above blames it.

Everyone was standing there, and no one dared to sit without Li Chengqian's permission.

Li Chengqian was very gentlemanly and pulled Wu Zetian.

"Madame, please be seated!"

Wu Zetian was not polite and sat directly on the seat.

She said:

"This seat is really comfortable, much more comfortable than any seat in the East Palace!"

Lai Ji explained: "Crown Princess, that's because walking all the way is very time-consuming, and if you are uncomfortable, the whole person will be very uncomfortable. So, we try to be as comfortable as possible when designing. ”

"It's called ergonomics!"

Li Tai said.

"Madame likes it, this king asked them to make a few and send them to the East Palace?"

Li Chengqian said with concern, but Wu Zetian said: "His Royal Highness the Prince, the concubine can sit on the chair of the East Palace, don't worry about it, the strength must be used on the blade, and you can't waste everyone's time because of the concubine's selfishness." ”

Wu Zetian is still very sensible.

"In that case, that's it."

Li Chengqian looked at everyone again, still standing, so he said: "You all sit down, you can take a look at the scenery along the road for a while!" ”

Everyone sat down.

At this time, Laiji suddenly asked.

"His Royal Highness the Crown Prince, do you want to start?"

"Okay, let's get started!"

Then he went down and shouted.

"Turn on the steam engine!"

Now everyone moved, some people kept adding coal to the stove, and Lai Ji went to the operating table to start operating.

I saw him pull down the valve and move another switch.

Everyone was a little surprised to see this operation, what kind of operation is this? Why and how.

It's not like horseback riding, which can be controlled by pulling the reins directly, and the train is a bit more complicated.

Li Chengqian didn't speak, and everyone didn't ask.

They all watched with bated breath, for fear of missing a hint of excitement. This big guy is a novelty for everyone.

Taking advantage of this gap, Wu Zetian suddenly asked: "How does the so-called steam engine work?" ”

Li Chengqian began to explain: "The engine of the steam train is actually a coal-fired steam boiler, through the combustion of coal, the water is turned into high-pressure and high-temperature steam (steam has a lot of energy), and the steam is sprayed in the engine cylinder to push the piston, and the piston drives the wheels forward by driving other machinery. ”

Li Chengqian's words made everyone stunned.

But these explanations are very familiar to Li Ke and Li Tai, who fully understand their principles and structures, and can also draw structural diagrams.

Suddenly, there was a loud bang, and everyone was surprised.

They don't know it, it's a whistle sound.

Whether it was Wang Xuance, Xue Rengui and Su Lie, the three of them instantly picked up their weapons.

As if facing a great enemy.

"Your Royal Highness the Crown Prince be careful!"

Wu Zetian was also taken aback, he was not frightened by the whistle, but was frightened by the three of them.

Their behavior touched Li Chengqian and made him amused.

Because they're overreacting.