Sitting at the dining table, Fang Fengzhu held her cheeks in her hands, and quietly watched her husband pull her younger brother to the big study of the palace with an enthusiastic face.

After a moment of silence, Fang Fengzhu said in a low voice: "Ink painting, bring me a deck of cards." ”

"Yes, Princess."

Mo Hua walked out of the room quickly, leaving Fang Fengzhu alone to continue in a daze.

In the young princess's heart, this is a little chaotic.

Because she has just discovered the fact that she seems to have understood the reason for the appearance of cards - not to let everyone have fun in their free time, and not to be able to sell a deck of cards for ten dollars!

"This Tianzhu number, what is worthy of the king's attention?"

Holding the cards that Mo Hua had just brought, counting the Tianzhu numbers on them one by one, Fang Fengzhu gently bit his lower lip, and a pair of big eyes flashed with Brin Blin.

She had just noticed that the card seemed to have been created to let more people know about the Tianzhu number.

Or, when the king thought of a game like solitaire, it was for Tianzhu numbers? Otherwise, Fang Fengzhu really couldn't figure it out, why did he insist on printing Tianzhu numbers on the cards, instead of Chinese characters, and couldn't understand why the second brother was just interested in cards, but Li Yuanjia just pulled him to the study, and his attitude was still so enthusiastic!

What else could be the reason other than the Tianzhu number?

But......

Why?

The smooth and flexible cards were counted one by one in Fang Fengzhu's hand, and her eyes gradually became confused.

It's not just about cards, but now that I think about the fact that I just got married, the king mentioned intentionally or unconsciously that if you want to control the property of the palace, you must learn mathematics, and it is best to be proficient; Then Fang Fengzhu went to a farm outside the city, and once again felt that Li Yuanjia attached great importance to mathematics......

"Is this really that important?"

Thinking about it, Fang Fengzhu simply stood up and walked in the direction of the small study.

There are two study rooms belonging to Li Yuanjia in the palace, one large and one small. Although there are fewer books in the small ones, only he and Fang Fengzhu can enter, but the books for daily use are also very complete. After entering, he found a math book he was studying, and Fang Fengzhu read it patiently.

There are six arts of gentlemen, one of which is several.

But it's important, but after all, it's not as good as the subset of history, so is it so painstaking? Is it because it allows the workshop to produce more overturned, blank paper?

Looking at the math book in his hand, the focus of Fang Fengzhu's eyes was actually not on the page at all, and he was confused for a while.

The more things the workshop makes, the more money it makes, and it stands to reason that as the hostess of the Han Wang's Mansion, Fang Fengzhu should be excited. But at this moment, it was difficult for Fang Fengzhu to be happy.

The husband she dreamed of before was not such a man who seemed to be full of copper stench.

The daughter of Xuanling of Liang Guogongfang, from childhood to adulthood, has read sage books, listened to the education of the emperor and the emperor, and has always regarded money as dung......

"No, it's not!"

As soon as the thought in his heart rose, Fang Fengzhu shook his head desperately, refusing to think about it anymore.

"Impossible! My husband can't be like that! ”

Taking a deep breath, Fang Fengzhu looked at the math book in his hand seriously again: "If he really only wants to make money, then there is no need to let others learn math like this!" The second brother is just that, I remember that he also gave this math book to the prince and to the king of Wei...... Moreover, isn't the Tianzhu number deliberately printed on the cards so that more people can see them? ”

When he thought of this, Fang Fengzhu's heart suddenly relaxed.

There is a feeling of sudden enlightenment!

It was at this time that Fang Fengzhu knew that he was concerned about the chaos just now, and he suddenly became a little bit sharp. The king attaches so much importance to Tianzhu numbers, I am afraid that it is not only because he can make more goods in the workshop, because in Fang Fengzhu's view, Li Yuanjia is sparing no effort to let more people know the existence of Tianzhu numbers and their wonderful use!

If you want to make more money, you should hide it desperately!

Thinking about this, Fang Fengzhu was confused again, she found that after marrying into Han Wangfu, she thought that she could quickly have some understanding of her husband, but now it seems that Li Yuanjia's confusion is getting stronger and stronger, more and more?

"The king...... What exactly does he want to do? Alas......"

……

"Brother-in-law, what's the use of learning these things?"

Looking at the few books lined up in front of him, Fang Jun looked confused - unlike his eldest brother Fang Zhizhi, he didn't like reading much since he was a child, but he was born in the Fang family but had to read, and he was "full of economy" at a young age.

But looking at the words on the pages in front of him, Fang Jun felt a headache.

"What's the use? Hehe. ”

With a chuckle, Li Yuanjia leaned over and said seriously: "Brother Aixian, let me be honest with you, if you learn these books, I guarantee that in the future, whether you are an official or a housekeeper, you will never be confused!" Whether it is a small account book at home or a big account book after becoming an official in the future, as long as there is the help of this Tianzhu number, it will definitely be clear...... Come, you may not believe it just by talking about it, just take a look at the ready-made account books of our palace! ”

While speaking, Li Yuanjia took out a ledger from the cabinet next to him.

"Huh? This, is this appropriate? ”

Seeing that Li Yuanjia really took an account book out, Fang Jun's mouth was open, and he suddenly asked with a stammer.

This is the account book of the palace, even if Fang Jun is Li Yuanjia's brother-in-law, but after all, he is an outsider, how can he let himself come to see it rashly?

"It's okay, it's just a small workshop's ledger."

Li Yuanjia is naturally not a person who doesn't know the importance of the matter, what he took out was the account book of the glass workshop, and it didn't matter if he was looked at. After all, the research and development of glass has not made much progress now, and the craftsmen have just learned how to make colored glass beads, which is probably the level of the craftsmen in the Western Regions in this era.

Of course, Li Yuanjia will not take out this level of goods.

So far, the investment in the glass workshop has not been high, and it is the least among the many workshops. After all, the raw material of glass is sand, and even if you have to keep trying to add things to it, the amount used is very small, and the most expensive thing is only the daily fuel and labor.

And hearing him say this, Fang Jun was really interested.

In the blink of an eye, he came to Li Yuanjia's side and began to listen to him patiently......

……

I'm sorry, Kavinka is awesome.