"You kid really make excuses!"

Li Er glared at him fiercely, obviously using his power for personal gain, and he insisted that he was making a contribution to Datang, which was really shameless enough.

"The son-in-law is true!"

"I ask you, are you really building a house according to this drawing?"

Li Er had a dark face and directly changed the topic.

"How did my father-in-law get this picture?"

Zhao Yin looked at the drawings that were exactly the same as those he had drawn at the beginning, and couldn't help but ask suspiciously.

"Don't worry about this, just say it's over!"

Li Er continued to ask with a little impatience.

"Theoretically!"

Zhao Yin nodded slowly.

Looking at Li Er's current attitude, there is no need to ask, this drawing must have been taken out by Princess Changle to show off, and it was detained by Li Er.

"What do you mean by theoretical? Is it possible to do this? ”

After hearing Zhao Yin's words, Li Er almost stormed away.

I talked to him patiently, this kid is good, he has been talking to him, and none of the words in his mouth are serious.

"This son-in-law can't be sure, this house is very complicated, and the materials can be prepared as much as possible, but the construction depends on the craftsmen!"

Zhao Yin showed a helpless look.

If he said that he could build it 100%, I am afraid that he would not have to wait for himself to try it out, and these craftsmen would be immediately brought back to the palace by Li Er.

So, only give him an ambiguous answer.

"Judging from the drawings, if cement can really do this, I'm afraid ordinary people shouldn't be able to afford to live in such a house, right?"

Li Er stared at the drawings for a long time, and then reacted.

It seems that during the experiment, the thatched house was several times more ugly than this one.

"Your Majesty, you misunderstood, the people's houses definitely can't use such a large area, so the cost won't be much, and when the son-in-law goes back, he will design a drawing suitable for the people to live!"

Without waiting for Li Er to speak, Zhao Yin left like a runaway, and he didn't know if this kid really went back to draw drawings, or if he was evading Li Er's continued questioning.

……

Time flies, a month has passed in a blink of an eye, and the whole villa can already see a silhouette, and the rest is the fine work of craftsmanship.

And the streets of the entire Chang'an City have also begun to start one after another, because the road construction has also caused a lot of sensation.

In the beginning, many people opposed the construction of concrete roads because they had to destroy the original road surface.

But the arms couldn't twist the thighs, and the court directly suppressed the mob who opposed it, and forcibly repaired the road!

Then those who opposed it were released, and when those people saw the newly built road, they were dumbfounded, and they all knelt down one by one, and kept kowtowing to the officials of the imperial court!

Only after seeing it with their own eyes will they understand that the court was really for their good, and all the money for road construction was paid by the court, and the people did not spend a tael of silver at all.

Slowly, the number of people who helped gradually increased, which also made Li Er famous again, and won the hearts of thousands of people at once.

For Li Er, he was naturally happy about such a thing.

The son-in-law uses his name to do good things for the people, and he wins the hearts of the people, which is really cost-effective.

Especially this kind of thing, it doesn't cost much money to get such a big benefit, which is definitely Li Er's favorite thing.

"What have you been up to lately? Why can't I see you all the time? ”

Li Er is still smiling, all the twists and turns during this period of time are all singing praises to virtue, the people live and work in peace and contentment, and the country is a good scene.

"Your Majesty, now that the territory of the Tang Dynasty has expanded again, if you want to go to every corner, it is too difficult to rely on the carriage alone, and it has been delayed for too long."

"All the sons-in-law have been pondering these days, is there something that can replace the carriage? You can drive to every inch of Datang. ”

According to the current steel technology, it is completely possible to try to study the steam engine, once the research is successful, it is definitely not a dream to travel all over the territory of Datang in a short time.

"Is that true?"

Li Er suddenly became interested, not to mention whether this kid can succeed, just this idea, this idea makes people yearn for it.

"My son-in-law only has this idea now, but whether it can be realized in the end depends on my craftsmen in Datang!"

Zhao Yin waved his hand very modestly.

Although he has the help of the system, the steam engine is indeed a bit difficult, and it is still unknown whether it can be developed!

"If you have an eyebrow, let me know immediately."

Li Er glared at him fiercely, and every time he asked this kid, he didn't have a letter.

It's been in contact for so long, who doesn't understand whom? This kid never does anything that he is not sure of, as long as he mentions it, then it proves that this thing is absolutely feasible.

As long as he says he will do it, then there is no need to hesitate, this matter is guaranteed to be successful.

"Father-in-law, please rest assured, as long as you are careful, your son-in-law will be the first to inform you!"

"Okay, that's what you said, but ......! What are you going to do instead of a carriage? ”

"The son-in-law is going to develop a steam engine, something made with steel technology, and then use water vapor to generate power, and if successful, it will be several times faster than a horse-drawn carriage."

After Zhao Yin groaned slightly, he slowly opened his mouth and slightly revealed some news to Li Er.

"Aren't you kidding me?"

Looking at Zhao Yin's yearning expression, Li Er couldn't help but ask, and there was an unbelievable expression in his eyes.

How is it possible to let steel replace horses and outpace carriages?

"Then Your Majesty will wait and see!"

Zhao Yin didn't bother to explain, and even if he did, he couldn't understand it.

"I know you kid won't cheat, but it's unbelievable, if this thing really succeeds, how fast will it be? How many people can sit at one time? ”

Li Er asked suspiciously.

If the whole is made of steel, the weight alone is definitely not something that ordinary people can imagine, and the people who sit on it think that it is impossible.

"From a few hundred to a few thousand, there shouldn't be much of a problem."

Zhao Yin recalled the train of the next generation, and he still had a conservative estimate.

"What are you kidding? You are talking about the car that can seat thousands of people? How much force does it take to pull it? And how big does it take to get in a car? ”

The speed of the train made Li Er yearn for it and was very excited, but Zhao Yin's words made him unable to believe it at all.

A sturdy horse can pull a cart of goods, but if you can pull thousands of people, how many horses do you need to do it?