I was very irritable in my heart, and my face was helpless.

Although he had been mentally prepared for a long time, in any case, after hearing the sales of "Mathematics", Li Yuanjia still felt very uncomfortable.

Are people in this era blind?

That's a truly finished version of Arabic numerals...... Of particular importance is the description of the concept of "0", which is very precise and complete in Math!

You must know that in the field of mathematics, "0" can be said to be an epoch-making creation, and it is its emergence that lays the foundation for future development.

Prospective students may find it incredible, because "0" is taken for granted for them and seems to be born with it.

However, in real history, the appearance of "0" is really not easy.

There is no "0" in Roman numerals, so when the Arabs introduced Indian numerals to Europe, the Pope was furious, because they believed that the sacred numbers were created by God, and the Roman numerals did not have "0" in them, so whoever dared to use them was blaspheming God!

Unlike ancient Western mathematics, which was dominated by geometry and logic, ancient Chinese mathematics was based on operations, so the concept of "zero" appeared a long time ago. However, there is no "0" in ancient Chinese calculation numbers, and when "0" is encountered, the space will be empty, so it is very easy to make mistakes. And the meaning of the word "zero" is not the number "0", but the meaning of "fragment", so "one hundred and one" means that there is a leading one in addition to one hundred. It wasn't until later that Arabic numerals were introduced, and "0" and "zero" were in the same position, so "0" was pronounced as "zero"!

In a word, "0" is definitely one of the greatest inventions in human history.

Because there is only one fragment of the mathematics book from Tianzhu, and Li Yuanjia does not see the existence of "0", it is difficult for him to determine whether the number "0" has been invented by Indians now. But none of this matters to him, the important thing is that as long as he wants the "0" to exist, it will naturally appear......

Therefore, "Mathematics" will be considered an epoch-making masterpiece, and Li Yuanjia can be sure that if the value is alone, these six books will probably surpass any mathematics book in Chinese history!

However, the Dons didn't buy it?

Even if Li Yuanjia is just a porter and a coder, he will still be very sad after seeing such a result, and he will empathize with the authors whose works are not accepted!

"Because of the horizontal row? Or is it because from left to right? Or is it ...... Because of the identity of the author? ”

Thinking about it, Li Yuanjia couldn't think of a reason.

He could have predicted that it would be difficult to popularize Mathematics, after all, the ancient literati were too noble and proud, otherwise they would not have started to use Arabic numerals in the nineteenth and twentieth centuries, so it is difficult to convince them to accept such a rebellious book as Mathematics at once!

Moreover, the horizontal arrangement and left-to-right writing style indeed challenged the habits and pride of the readers during the Zhenguan period.

The greater it is, the harder it is to change.

After a thousand years, China coincided with rare changes, and the gap between China and Europe, the United States and even Japan was visible to the naked eye, especially the century-old history of humiliation, which made many people have **** ideas. And at that time, many things will be much easier to change, such as numbers, and then simplified characters, etc.

But now Datang, who wants to change? Who wants to learn from someone else?

Not to mention that the person who took out this set of books is still a milky idle king, a character who almost does not exist in the eyes of Datang readers.

So when the six books were printed, Li Yuanjia had already expected the difficulty, but he didn't expect it to be so difficult!

Six books, six people bought......

"The king, the king?"

Just when Li Yuanjia was just frowning and immersed in his various reasoning, Han Lucheng next to him couldn't bear it anymore and called him in a low voice.

"Huh?"

Glancing at Han Lucheng obliquely, Li Yuanjia said irritably: "What? Is there anything else? ”

"This ......"

After hesitating for a moment, Han Lucheng gritted his teeth, and finally said boldly: "King, if you have the courage to guess, are you bothered that no one has bought "Mathematics"? Or do you want the contents to get out as soon as possible? ”

Forcibly suppressing the irritability in his heart, Li Yuanjia's eyes flashed and said, "Well, so what? ”

"Yes, the little one has a word!"

Without waiting for the king to ask rhetorically, Han Lucheng continued: "If the king wants more people to learn this kind of Tianzhu number and read the set of books you wrote, I think it may not be possible to count on those who read it!" Maybe...... Maybe ......"

"Maybe what? Say! ”

With a sudden movement in his heart, Li Yuanjia shouted in a deep voice.

Seeing that the king seemed to be a little interested, Han Lucheng gritted his teeth and said in a low voice: "The king, maybe you can get from us people...... Or the bookkeepers of those shops! ”

After finishing speaking, Han Lucheng hurriedly lowered his head deeply.

If it weren't for the fact that he knew his own king too well, knew that Li Yuanjia was mild-tempered, and would never be angry because of the advice of his subordinates, Han Lucheng would never dare to say such a thing. After all, the stewards in the palace, the shopkeepers and bookkeepers of the shops outside, what kind of goods are these?

The book written by the king is for you people?

However, it is precisely because he knows something about the king now that Han Lucheng dares to try to suggest it. Because he knew that Li Yuanjia would never think that these people were unworthy of learning their own things because of their low status, after all, which of the stewards of the Han Wangfu would not use Tianzhu numbers, and which would not be able to simply add, subtract, multiply and divide?

Han Lucheng believes that even if the king does not take his advice, he will definitely not be angry about it.

Really!

As he thought, Li Yuanjia was not angry because of his words, but his eyes lit up, and the expression on his face instantly became vivid: "You mean...... Hehe, I see! ”

Li Yuanjia smiled suddenly, but Han Lucheng was stunned.

Then he watched the king stand up, and the depression on his face just now instantly dissipated without a trace, and then waved his hand: "Go, let someone get me five sets...... No, bring ten sets of books! ”

"Yes, King!"

This time, Han Lucheng didn't dare to hesitate, and immediately nodded and retreated.

And Li Yuanjia sat down in his place again, first opened a book and looked at it, then put it on the table, and then patted the table and stood up: "No, you must talk to Fengzhu first." If you want to take the lady's route, you can't do it without her help......"