Li Tai, the king of Wei, was interested in Tianzhu numbers and those few math books, and his uncle Li Yuanjia did not know about it. Because although Li Tai has some difficulty in chewing those books, he has a strong nature and will definitely not come to Li Yuanjia unless he really can't read it.

And in order to promote Tianzhu numbers, Li Yuanjia has also put a lot of effort into these books, which are easy to understand and "nonsense", and the goal is to enable literate people to use books to teach themselves.

Otherwise, a Tianzhu number will definitely not tell the content of a book!

So after making up his mind to completely push out the Tianzhu figures, Li Yuanjia immediately instructed Wang Pu to speed up the speed of plate making - he had already asked the craftsmen to start plate making for this set of books, but because he had not decided the time for the final launch, the craftsmen would only do so much on the premise of ensuring that they completed their daily work, and now with Li Yuanjia's order, it is time to start work with all their might......

……

Daxing Palace, Ganlu Palace.

"Huh? What did you say? ”

Originally, he was quite happy to see Li Yuanjia, but after listening to this younger brother's words, Li Shimin's eyes suddenly widened: "Engrave books? How many math books are you going to engrave? ”

The stunned expression showed that the emperor was extremely surprised at this time.

With a simple expression, Li Yuanjia hurriedly waved his hand and said, "I plan to engrave those six books, but ...... I didn't write those six books! I just learned the numbers of other Tianzhu people, and then used them in our Datang mathematics......"

"Hmph, what's the difference?"

Frowning, Li Shimin said angrily...... Do you think I'm stupid?

"Uh...... Hehe. ”

Laughing dryly, Li Yuanjia didn't dare to continue to talk nonsense with the emperor.

Of course he knew what the other party meant, because now is not the era of information explosion more than a thousand years later, not to mention those academic bulls, literary masters, it is not difficult for ordinary people to publish books. In fact, as long as you're willing to spend tens of thousands of dollars, you can find a publishing house and print what you've written in pencil.

In ancient times, there were many people who had their own things, but how many could be engraving and printing?

Most people entertain themselves at home, and a small number of people's books may be valued by others, and they take the trouble to copy and preserve them......

Engrave a set of engravings, and then print a thousand sets?

But all the books that have this kind of treatment are all classics, the kind that the demand has exploded! After all, it costs a lot of money to engrave a set of engravings, and if you want to print, you also need paper and ink, and the labor consumed is innumerable, and the cost is really high in terms of ancient technology.

Therefore, for the ancients, it is definitely a great honor for their books to be engraved and printed!

And this is exactly the reason why the emperor was surprised after listening to Li Yuanjia's words - is his old eleven having a brain pump? Do you really think these math books will be popular?

Anyway, after frowning, Li Shimin said puzzledly: "Eleven Lang, it doesn't hurt that you like this Tianzhu number yourself, you have spent time and effort compiling these books, and it is your own thing to copy some things to give to others, but if you want to engrave and print a large number of them...... Have you thought about it? This count...... Although mathematics is also one of the six arts of a gentleman, compared with other scriptures, there are still very few people who study it, not to mention that you are a Tianzhu number, which is deviant in the eyes of many people! ”

Li Shimin had already read those math books and felt that they were indeed interesting, but it was not the kind that made him excited. So he couldn't figure it out, why did Li Yuanjia print so many books?

"Second brother, I understand!"

Taking a deep breath, Li Yuanjia nodded clearly, and said with a smile: "I just think that it is simple and convenient to use Tianzhu numbers, and the speed of calculation can be much faster, it would be a pity if I just used it myself, so I want to print some for more people to learn." ”

After a pause when he said this, Li Yuanjia continued: "When the time comes, how much money will be spent on the printing of these books, and the younger brother will sell them out...... Ahem, if it really doesn't work, it's okay to lose money and give it away. ”

In fact, Li Yuanjia has already figured out these things.

In fact, Datang does not have an organization like the General Administration of Press and Publication, and it does not have any literary prisons, so as long as it does not deliberately print some rebellious content, ordinary books can be printed if you want, and no one will care. The reason why Li Yuanjia just said this matter is actually to tell Li Shimin that he printed this set of books not to make money, and second, not to make a name for himself, but simply because he didn't want the pearl to be dusted......

In fact, in the eyes of many people, it is difficult to be a pearl in this Tianzhu number!

Even if Datang is open and inclusive, how many people will accept it if a completely different number suddenly appears? It is important to know that Arabic numerals were introduced to China not late in history, but they have not been taken seriously for hundreds of years, and it was not until the beginning of the twentieth century when modern mathematics began to be popularized in China that Arabic numerals began to slowly become popular.

And it's not just the Arabic numerals, but also the layout of the book.

Datang uses a top-to-bottom, right-to-left writing method, but because of the existence of formulas in math books, Li Yuanjia cannot arrange them vertically, they must be horizontally, and they must be from left to right! Just this point, everyone who has read her books, including the crown prince, King Wei, and Fang Fengzhu at home, feel extremely awkward!

So when these six books are printed, can Li Yuanjia still count on making money?

Don't be funny.

He, Li Yuanjia, is not short of money for printing books, and if the books can't be sold when the time comes, they will be given as gifts.

Li Yuanjia thought so, and may do the same in the future, but the emperor glared at him and said, "Engrave the book you wrote yourself, and then take it out and give it away?" Do you know what people will say about you in the future? ”

Fish for fame and reputation? Play for the gallery?

"Well, it doesn't matter, right?"

Shrugging his shoulders, Li Yuanjia chuckled and said, "Anyway, the younger brothers don't care about this, they can just go with them whatever they want......"

Don't talk about other people, even Li Shimin's thoughts, he actually doesn't care. It's just that there happened to be something in the palace today, so Li Yuanjia casually mentioned this matter to the second child.

However, after listening to his words, Li Shimin's expression obviously became more unkind.

Li Yuanjia's eyelids jumped wildly, and he hurriedly talked about entering the palace today: "By the way, Your Majesty, there is one more matter, the younger brother wants to tell you." ”

"Huh? What's the matter? “

After taking a deep breath, Li Yuanjia said seriously: "It's about the tea planted in the minister's mansion, and a kind of wine brewed, and the minister's brother wants to sell them to Tubo, the Western Regions and the northern grasslands......