"Use a ISBN?" Li Shimin looked at Tang Zhou with a very incomprehensible look, and he was still a little strange, why could Tang Zhou always come up with something that had never happened before?

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However, Li Shimin did not suspect anything about Tang Zhou because of this, he only thought that Tang Zhou was a talent, after all, in this world, many things are constantly developed and created, such as paper, such as porcelain, etc., and in this world, it can be said that new things are invented and created every day.

Now he just wants to know what Tang Zhou's book number is.

Tang Zhou smiled and said: "Shengshang, every time a book is published, it will be assigned a book number, such as the Analects, in the past, as long as you have the ability, anyone can publish the Analects, but now, we make up a book number for the Analects, for example, it is called zero zero zero one, with this book number, those bookstores can publish the "Analects", and different bookstores want to publish the same book, they must obtain a new book number again to print, so that the imperial court's supervision and management of books is not more convenient? ”

Li Shimin already has some understanding of the purpose of the book number, but he still has some questions that he does not understand.

"The use of book numbers only strengthens the regulation and supervision of book publishing by the imperial court, but what substantial benefit does this have for the imperial court?" Although Li Shimin affirmed the benefits of using the book number as stated by Tang Zhou, he did not see any substantial benefits from this, in other words, he did not see the money go into the treasury.

Hearing Li Shimin's words, Tang Zhou was not in a hurry, and said, "Holy Lord, how can anyone use the book number if they want to?" The book number should be in the hands of the imperial court, and if the bookstores in the world want to publish books, they must buy the book number from the imperial court, and if they buy the book number, the books they publish must also be reviewed by a special person, and there is no content that harms the imperial court before they can publish the book, in other words, the book number is like the salt quotation bought by the salt merchant, without the salt quotation, the salt cannot be bought, and the salt cannot be sold. ”

"This ......" Li Shimin hesitated for a while, he felt that what Tang Zhou said was indeed a good thing, throughout the ages, some very unbearable reading materials had a great impact on the people, if we can strengthen the management of this aspect, it is very beneficial to standardize the people's customs, but according to Tang Zhou, all books must be purchased with a book number, then it is bound to be a very huge project.

"In this way, will it be too troublesome, and will it make the people's resentment boil?"

"It's not too troublesome, the imperial court only needs to let those bookstores go to the designated place of the imperial court to buy the book number and record it, and this matter is only in charge of the bookstore, and it has nothing to do with the people, so it will not cause public resentment."

"But there's got to be a reason." Li Shimin looked at Tang Zhou, a sneer appeared on the corner of his mouth, since this matter was replaced by Tang Zhou, then he was fortunate to let Tang Zhou solve all the problems.

And Tang Zhou can understand the meaning of Li Shimin's sentence very well, the use of book numbers is very useful and beneficial, but there are restrictions on bookstores, so how can the imperial court implement book numbers for no reason? If you want to promote a book number, you have to have a reason that is difficult for bookstore owners to justify.

"Actually, there is nothing difficult to do in this matter, and now the supervision of various bookstores is not enough, the saint will find some people to look through it, and it should not be difficult to find a few books that are forbidden to the imperial court, and with this reason, there should be no problem with issuing the book number on the grounds of strengthening the supervision of book printing."

Seeing that Tang Zhou said the solution so easily, Li Shimin became more and more sure that these were what Tang Zhou had thought of, but he was still a little hesitant.

"After the book number is sold, the imperial court can carry out a certain amount of supervision, and any book without a book number will be confiscated immediately, and the book number is not the same as the record, of course, after using the book number, it is also to protect the interests of those bookstores who have purchased the book number, if they find that some people have stolen their book number, they can give them the right to report."

After seeing that Li Shimin was hesitant, Tang Zhou added these supplements, and with these supplements, the use of the book number will be more standardized.

But Li Shimin shook his head: "How many kinds of books can there be in each bookstore now?" After the implementation of the book number, they will come to buy the book number one after another, so that the imperial court can collect a large amount of money, but what can I do after that, how many books can be published in my Datang every year, and how much money can I make from these? ”

Li Shimin has a long-term view, although the imperial court can indeed benefit a lot when the book number is first implemented, but what about the future?

When Tang Zhou heard this, he immediately understood that in ancient times, the books that sold well were all sage books, and these books have become fewer and fewer since the Wei and Jin dynasties, and it would be good to have a few good ones every year.

In the future, by selling a few or dozens of books every year, how much money can the imperial court make?

Looking at the question on Li Shimin's face, Tang Zhou smiled: "Holy Lord, why don't you make a bet with you?" ”

"Bet?" Li Shimin was suddenly shocked in his heart, and then asked, "What kind of bet?" ”

"Give the minister a month, and the minister bets that my Datang will suddenly add a lot of new books, and the book number required for these books is enough for the imperial court to make up for the money won from betting on the horse archery competition."

Hearing Tang Zhou's words, Li Shimin's brows couldn't help but condense slightly, he felt that what Tang Zhou said was simply a fantasy, new books can be written so easily, those sage books throughout the ages, that one didn't take a lifetime of sages to write and pass them on for centuries?

In a month's time, how could Tang Zhou let Datang add a lot of new books?

Of course, Li Shimin knows very well that if Datang really publishes a lot of new books, then selling book numbers can make money, and the new books sold to the imperial court can also be taxed from bookstores.

The imperial study room was a little quiet, Li Shimin was thinking about whether to accept Tang Zhou's gambling contract, but he didn't think about it for long, he was the emperor of the Tang Dynasty, he was able to get to this point, many people said that they fought to gamble, gambling on one crossroads after another, and he was lucky, at least so far he has not lost.

"Okay, I accept your bet, if there are really a lot of new books in my Datang within a month, I will grant your invitation to completely abolish the betting of the Mounted Archery Competition, this year...... Temporarily cancelled. ”

Since Tang Zhou has already told him so much, Li Shimin naturally has to repay Tang Zhou, and the betting deficit in this year's riding and archery competition will be supplemented from the book number, and whether it will be completely canceled in the future depends on whether things are really as Tang Zhou said.

Seeing that Li Shimin agreed to his gambling contract, Tang Zhou showed a slight smile, he felt that what Wei Zheng said in the early dynasty was right, and it was difficult for a person who was used to gambling to quit.

And when Li Shimin saw Tang Zhou's shallow smile, his heart suddenly shook.