I am the cook, but I am Li Er's son-in-law

The little girls just washed up and went to sleep.

Only then did Li Shimin handle his official duties and put his pen aside. For a diligent emperor, this kind of thing has long been a habit.

He turned his head, looked at the eldest grandson empress who was by his side day after day, smiled slightly, and said softly, "What are they thinking about again?"

"Why didn't you hear anything this time?"

The news that the two princesses returned to the palace with two strange but very beautiful ladies reached Li Shimin's table immediately.

Li Shimin heaved a sigh of relief after he found out that the identities of these two young ladies were Fang Yiyu and the eldest grandson of the restaurant, and that the purpose of coming to the palace was also to study things.

As soon as there are more children, all kinds of strange breeds will emerge.

Girls who like girls don't mean they don't have them.

If it was an ordinary daughter, Li Shimin would turn a blind eye or close his eyes, and marry his daughter off in the future, leaving her husband's family a headache, but Li Lizhi is different from Li Shu.

If they were like that, it would be really difficult to give Yin Xuan an explanation.

Fortunately, no.

Empress Changsun smiled slightly: "I don't know what the store owner taught them. The stones that have been tinkering all night are not intended to be fired into porcelain, but ground into powder and then put into the kiln for firing."

"I went over to take a look."

"Instead, they kicked me out immediately, saying that I was short of breath and not fit to stay in that dusty place."

Li Shimin nodded, thoughtful.

Empress Changsun asked again: "Does Your Majesty know what they are studying?"

Li Shimin shook his head: "That's not clear, but the store has always valued those ores very much, and Linlang Pavilion's income is all in exchange for those things."

"It should be something more useful than that glass."

"Wait until tomorrow if they have time, or wait until they research it."

After speaking, Li Shimin paused.

"Tuyuhun's side is a bit unstable again, and there is going to be a war."

However, Li Shimin's face didn't look too worried. He had been looking forward to a war for a long time, and was going to see how effective that thing called artillery could be in the war.

Talking about war on paper will eventually feel shallow.

During this period of government affairs, Tuyuhun was the key point. It was not Li Shimin's business to ask what the little girls were studying.

It's not that Datang is bullying others.

Tuyuhun was really confused. Fuyun Khan was going to pay tribute to the Tang Dynasty, but halfway through the journey, he suddenly repented and plundered Shanzhou.

Li Shimin is a kind-hearted person?
They did not send troops to Tuyuhun immediately, but issued an order to let Fuyun Khan enter the court to confess his guilt. In the end, Fuyun Khan and the Tuyuhun soldiers who robbed the Tang Dynasty were killed.

Datang's temperament is here.

As long as you are willing to confess your sins, your country and your people will not be harmed.

However, the letter was sent in May, and it has been July so far. Fuyun Khan excused himself from illness and was unable to come to Tang Dynasty, so he repeatedly sent letters and excused himself with excuses.

It is estimated that war is inevitable, Duan Zhixuan is already gearing up, and he can't hold back the murderous spirit in his heart.

Whether it is Datang or Chang'an, there is no premonition that war is coming.

Good weather, peace and health.

A few little girls got on the concrete bar, and in a few days, they recorded a thick stack of notes.

The production of cement is not complicated, especially just the most common portland cement.

Gypsum is used to delay the setting time.

On the second day, several little girls got such a result - the control variable method, and now they are proficient in using it.

Clay is the most important part in cement production. If the amount of clay is less, it will directly affect the strength of the fired finished product after setting.

However, there must be no less limestone. If there is less limestone, the quality of the cement will not reach the expected level when it is set in the early morning.

It didn't take two months.

In just one month, these little girls tossed the cement out.

Fang Yiyu looked at the cement plane in front of him, which was a little bit gray after it had solidified.A Qianniuwei took a hammer and slammed it hard on the cement, but there were only a few marks and some cracks outside.

This cement slab is ruined.

But the little girls didn't show much regret or worry on their faces.

Qian Niuwei's face was full of surprise.

His strength is not small, and it is impossible to say that he deliberately restrained his strength in order to make the two princesses happy. He really hammered it down. If it was an ordinary bluestone slab, it would be torn apart with this hammer. It fell on such a piece of the same thickness. something poured from powder
It turned out to be just a crack?
If you don't care about the appearance, you can still use it if you make do.

Fang Yiyu was also a little surprised.

But her surprise... wasn't all about the cement.

Instead, they really made this kind of thing according to the big frame drawn by Yin Xuan.

And
Fang Yiyu lowered his head and glanced at the thick stack of papers that were stitched together in his hand, as if it was the first time he came to the imperial city, on the carriage, as Li Shu said.

Only point out a big framework, and the details need to be studied by themselves.

Although it was a bit troublesome, the knowledge was really learned in my mind.

The system of how cement is made is now extremely firmly established in her sea of ​​consciousness, even more solid than the knowledge of mathematics and physics that is studied, homework, and practiced day after day.

Is this the store's teaching method?
There was a gleam in Fang Yiyu's eyes.

This kind of method of doing nothing and moistening things silently is the teaching ability of that shopkeeper.

What a formidable man.

Before the next day, several little girls asked Yin Xuan for credit, Li Shimin hurried over with a brush in his pocket, staring at the cracked cement slab.

"What is this?" Li Shimin squatted on the ground without any image, looking at this dazzling gray thing.

Li Lizhi replied honestly: "It's called cement."

cement?

No trace of water, no trace of mud, such an inappropriate name for such a large slab firmly glued to the ground?
Li Shimin did not continue to ask questions.

Li Lizhi beckoned, and an eunuch came over with half a bag of cement, and gently placed it in front of Li Shimin, for fear that the smoke and dust would choke his majesty.

"This is the thing. We grind some minerals into powder to make clinker, and then mix the clinker with gypsum and some coal ash powder to make cement."

Li Lizhi introduced it solemnly.

"When you want to use it, add sand and an appropriate amount of water, stir it, and wait for it to condense to make a solid entity."