Han Lucheng suddenly came in, which made Li Tailuo a little surprised.

What a guts!

Knowing that he and King Han were talking in the house, he dared to come over and say that something was ready, this little guy was really ......

"Huh? Wrong! ”

When Li Taizheng secretly slandered the rude and reckless subordinates of the Eleventh Uncle's Mansion, his heart suddenly moved, and he turned his head to look in the direction of Li Yuanjia.

Sure enough, Li Yuanjia was not angry because of the words of his subordinates, but looked happy and expectant, and nodded with a smile: "Very good, you go down first, let them wait for this king...... Actually, I don't blame him for being so rude, it's really that I was looking forward to what they were preparing, so I forced that I had to report it immediately after it was ready, and I couldn't delay it for any reason, so I ...... Hehe, I smiled. ”

The latter half of the sentence was naturally said by Li Yuanjia to his nephew after Han Lucheng left.

After hearing his words, Li Tai's curiosity was immediately aroused, and he blinked his eyes and asked, "Uncle Eleven, what is it that makes you so concerned?" It can't be a zigzag plow, a rollover or something like that, right? ”

When he said the Quyuan plough and the overturned, Li Tai's tone was obviously a little joking.

Where is that kind of good thing?

But what surprised Li Tai was that he had just finished saying those words as if jokingly, when he saw Li Yuanjia bite his lower lip, and the expression on his face became hesitant......

How? Is there really one?

Just when Li Tai glared at him, he saw the eleventh uncle on the opposite side hesitate for a moment, nodded and said, "If my guess is correct, there is really this possibility!" However, whether it will work out or not, we will have to try a few more times to find out. ”

"Goo-dong!"

After listening to Uncle Eleven's words, Li Tai finally couldn't help but swallow a mouthful of saliva.

Really?!

"What? Xiaotai is also interested? ”

After seeing his surprised expression, a strange look faintly flashed in Li Yuanjia's eyes, and he said with a smile: "It just so happens that they have prepared everything, if you are interested, let's go and have a look together." ”

"This ...... Is it appropriate? ”

After a moment's hesitation, Li Tai asked.

If it was really something like Qu Yuan Plow, he would be a little presumptuous if he looked at it with the past. After all, it is one thing for people to dedicate it to the emperor after making it, and then the emperor to give it to the world, and it is another thing for others to see it before it is made.

"Haha, you and my uncle and nephew, what's inappropriate?"

Seeing his hesitation, Li Yuanjia waved his hand and smiled disappreciatively: "If you're interested, let's just go and have a look." And the thing I'm going to make, although it's written in the book is wonderful, I don't know if I can make it. ”

Li Yuanjia gave a pole over, and Li Tai naturally climbed up, and nodded with a smile: "That's the case, then the nephew will go and have a look together." ”

He didn't have any ideas, he was just curious.

But then again, after all, Li Tai is the prince of the Tang Dynasty and the emperor's son-in-law, what good things are worthy of his envy? Anyway, no matter what kind of good thing it is, it will definitely have his share in the future......

……

"Uncle Eleven, that's it?"

Seeing that the subordinates of King Han's Mansion put a pile of dusty powder together with some soil and stones, and stirred them together with water, Li Tai asked with a strange face.

He really didn't understand, what was the use of this thing?

"yes, that's it."

After nodding, Li Yuanjia smiled: "It's just the first step, and then they will use these things to pave a way out and see if it is flat and hard enough...... Maybe try building a wall or something to see how it goes. ”

When he said these words, Li Yuanjia was actually very apprehensive in his heart.

After all, he didn't know the precise method of cement at all, so he just relied on the impression in his head to give a method, and then asked Han Lucheng to find someone to try. As for whether it can be done and what the effect is, Li Yuanjia has no score in his heart.

He didn't have a score in his heart, and Li Tai's face was also full of confusion: "Uncle Eleven, according to what you said, this thing ...... Isn't it the same as glutinous rice lime slurry? What's the use of doing it? ”

"Uh......"

Hearing Li Tai talk about glutinous rice lime slurry, Li Yuanjia was stunned for a moment, and his eyes were a little different when he looked at his eldest nephew.

This kid even knows the glutinous rice and lime slurry on his face?

The so-called glutinous rice lime slurry is actually mixed with glutinous rice soup into lime mortar to form a new composite mortar, which can be used as cement. Moreover, the strength of glutinous rice lime mortar is much greater than that of pure lime mortar, which is very strong, and it is really no worse than cement when used as a building material.

The function of glutinous rice soup is the binder.

However, this thing is generally only understood by craftsmen, Li Yuanjia really didn't expect that Li Tai, the prince who grew up in the palace since childhood, also knew, and suddenly thought of it.

In fact, glutinous rice lime slurry is just one of the "cement" invented by our ancestors for thousands of years.

They have been using lime mortar for a long time, and later discovered a material called "mirage", which is ash fired from oyster shells or clam shells, which is stronger than lime mortar. There is also a mixture of red clay, coarse sand, and lime blocks, and the tamping of the clay is still the main material for the construction of the city wall......

So in fact, Li Yuanjia made cement, and that was also grounded.

It's just that for Li Tai's question, he thought about it for a while and could only spread his hands and said: "It's similar to the use of glutinous rice lime slurry, but it's just ...... Xiaotai, don't you think that if you build a house with glutinous rice soup, the cost is too much? What if we could find something cheaper and that could be made in large quantities? ”

"This ...... Very good. ”

After his eyelids twitched twice, Li Tai quickly lost interest in the things in front of him.

Sounds like a good look?

It's just that Li Tai is a little puzzled, since the city wall can be built with Sanhe soil, and the palace can be built with glutinous rice lime mortar, even if the thing made by Uncle Eleven is cheaper, what is the use?

Is it really used to build roads?

How much would it cost to build a road with that thing? I'm afraid that it can only be repaired in places like Chang'an and Luoyang, right?

Looking at the disappointment that faintly flashed in his eyes, Li Yuanjia was not surprised, and he was still full of smiles.

He didn't think that he would use this half an hour to really interest Li Tai, but he just hoped to leave a little impression on this kid's heart. In the future, if the cement is really done, Li Tai will naturally be able to remember today's events, and what kind of reaction will he have at that time?

To be honest, Li Yuanjia is really looking forward to it.

As for now, it doesn't matter whether you are interested or disappointed.

Just when several thoughts flashed through his mind, Li Tai had lost his patience and asked dryly: "Uncle Eleven, this is going to take too long, why don't we talk about your set of math books first?" I've finished reading all six books now.,Do you still have anything in the back? ”