"Master Pony, you're here!"

From a distance, I saw the colt and the princess coming over, and the craftsman who was building the villa hurriedly put down the work in his hand and respectfully saluted the two.

"Aren't the tiles already burned? Why haven't you put it up yet? ”

Zhao Yin looked at the villa in front of him, there was no change from a few days ago, and the tiles had already been placed not far away, so he was very puzzled.

"I don't know about it, it's not that we don't work, but these tiles are too glorious and can't be pasted at all!"

The craftsmen looked genuinely frightened, they had tried many methods, but they still couldn't get the tiles on them.

"I'll see!"

Zhao Yin came to the craftsman in a few steps and motioned for him to post it and take a look.

The villa has been built, and if you don't use tiles to decorate it outside, you will simply go to grandma's house.

"This can't be pasted, the viscosity is not enough, take some cement, no need to mix sand, directly mix the cement with water, and try again!"

After a few actions, Zhao Yin knew where the problem was, not the problem of tiles, but the problem of cement, with different proportions and different effects.

"It's pasted, it's really pasted."

After following the horse's advice, the tiles were firmly attached to the wall, and the craftsmen were overjoyed.

They never thought that cement would have such an effect, and they all began to try it one by one.

Princess Changle looked at the craftsmen with a curious look at the tiles, she didn't expect that these tiles were actually used like this, and they would be so beautiful after pasting.

"Master Horse, Your Majesty has announced your entry into the palace!"

At this moment, Wang De walked over with a smile on his face, bowed to the two, and said tentatively.

In the entire Tang Dynasty, the master of the horse is the only one, and other civil and military officials, as long as they are ordered by His Majesty, must be on call.

But the colt is different, it's too special, whether to go or not depends entirely on his preferences, if he is willing to move, he will go, if he is not in the mood, you have to wait, and you can't fight, you can't scold, you can't say a word.

"What's wrong again?"

Zhao Yin stared at Wang De very impatiently.

Li Er announced that he had entered the palace in the past three days, which was really annoying.

I don't know what's going on this time.

"This ...... The old slave really doesn't know! ”

Wang De replied with a look of embarrassment.

"Okay, I can't hide anyway, let's go!"

Zhao Yin flicked the ashes on his body and walked towards the mansion gate.

The problem here in the villa is not something that can be completed in a short period of time, and the current work of tiling is enough for them to work for a few days, and it is useless to stay here by themselves!

"Who do you want to hide?"

Looking at his helpless expression, Princess Changle was suddenly unhappy.

"No one, it was just a slip of the tongue just now, the princess will wait in the mansion first, I'll go and see and come back!"

"That'...... All right! ”

Princess Changle wanted to go with her, but when he said this, she reluctantly agreed.

……

"Father-in-law, I don't know what you called your son-in-law over?"

After entering the imperial study, Zhao Yin bowed directly to Li Er, and then asked.

Because he knew that if it was okay, this old picker would never call himself here, as long as he was looking for himself, there would be nothing good, so he had to guard against it.

"How's the steam engine being studied now?"

Li Er still attaches great importance to the things on the train, and he also went to watch it a few days ago, and he felt very shocked, but he heard that some problems have not been solved and cannot be used at all, which makes him very anxious.

"The problem of the last time has been solved, the steam engine has been successfully developed, and when they build the train, they can test it."

When it comes to this, Zhao Yin is inevitably a little complacent.

"That's fine."

Li Er was immediately overjoyed.

The successful research of the steam engine means that the train has been half realized, and it is one step closer to traveling the entire Tang Dynasty by himself?

"I called you here today, mainly because I heard that your kid has recently acquired a large number of eucommia, but what is wrong with his body?"

Li Er's face was worried.

There are still a lot of eucommia in the palace, which can be used by him at any time, but don't have any problems with his body, this kid is now the mainstay of the Tang Dynasty.

"My father-in-law misunderstood, I bought Eucommia ulmoides in order to refine the glue in it, which is used to seal the problem of the steam engine, and the sun-dried medicinal materials in the palace have no effect."

Zhao Yin was stunned for a moment, and then spread out his hands and said helplessly.

"So that's the case, so it seems that I'm thinking too much, haha!"

After hearing the true use of Du Zhong, Li Er immediately laughed, as long as his son-in-law's body didn't ask, then everything was not a problem.

"By the way, the Wa Kingdom will send envoys over in the near future, what do you think about this?"

Seeing that this kid was still a listless look, Li Er had to tell his true purpose.

"The weasel gave the chicken a New Year's greeting, and he must not have a good heart! They must all be arrested, tortured, and told to tell their true intentions! ”

For the Wa Kingdom, Zhao Yin did not have a good impression at all.

"The two armies are fighting, don't kill them, do you kid want to make my Tang Dynasty infamy?"

Li Erhu's face was a little displeased.

"The state of etiquette, who will it be divided against? Then the beasts of that projectile land, letting them enter the land of the Tang Dynasty is already considered a mercy to them......! ”

When it came to the Wa Kingdom, Zhao Yin looked disdainful and continued to ask, "Your Majesty, think about it, why didn't the Wa Kingdom come early or late, but came here during this time period?" What do they really mean? ”

In a country that does not distinguish between ethics, it is a waste of saliva to talk to them about benevolence, righteousness and morality.

"In your opinion, what is the purpose of their trip?"

Hearing him say this, Li Er was a little puzzled.

In the past, envoys from various countries would come to Datang from time to time to promote relations between countries and for the development of commerce.

But listening to what this kid meant, it seems that the Wa Kingdom came this time with another purpose?

"If what I expected, the real purpose of the Wa Kingdom's visit this time is to probe the reality of my Datang strength."

Zhao Yin sneered.

The reason why he studied the steam engine was to bring the entire Datang into the industrial age in advance, so that the steam engine could be widely used in Datang.

The next step was to study steamships and other ships suitable for long-distance voyages, so that they could be used to conquer overseas countries.

But the current technology is still being studied, and it must not be leaked out, once it is learned by other countries, then Datang will be in danger.

"It's just your guess, how do you know they must have come to listen to the information?"

Li Er doesn't deny such a possibility, but he can't just click these envoys because of a guess, right?