Chapter 30, "Arithmetic".

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Coming out of Wei Zheng's lobby and walking to his official room, the eldest grandson pondered the taste.

I said how is it that under normal circumstances, there are only three secretaries in the secretary province, and I am the fourth, it turns out that this is not easy for them to settle at all, just fool yourself, this book has to be compiled by yourself, people have to find it by themselves, although the credit is also greater, but what is the use of the credit?

entered the official room, but Zhang Zhong was already waiting here.

"Young Master, you just woke up?" Zhang Zhong asked, knowing that the eldest grandson had no shelf, these neighbors didn't care much about these vain etiquette issues.

"What's wrong?" The eldest grandson said casually that his thinking had not been changed.

"You have a few red marks on your face, which you should have left when you slept, but now it's much better, and it shouldn't be long before it will be gone." Zhang Zhong said.

"No wonder." This eldest grandson recalled the expression of the official who called him and the sudden change in Wei Zheng's attitude towards him, it turned out that the root was here, but these things have passed, and now he will not run to Wei Boss to explain. It seems that as soon as he went to work, he left a bad impression on Shangguan.

"Is there anything wrong with you?" The eldest grandson asked lightly.

Generally speaking, when officials with a certain status go to work, they will bring a more intimate subordinate to be responsible for running errands or contacting the family, and these people generally stay in a special room next to the gatehouse, and these people are usually responsible for finding out the news of other officials. However, this is the treatment of more than five grades, and the official position of the eldest grandson from the sixth grade is really not enough, but fortunately, there is a title in his body, and it is not a violation of the rules.

"Oh, that's right, Lord Li Chunfeng from the Taishi Bureau sent a letter of worship." After speaking, he took out a post from his sleeve and presented it respectfully.

The young master can be approachable, but you can't be without rules, this is Fu Bo's advice to his son, and Zhang Zhong also strictly abides by it.

When I took the post, it was not the same as the previous invitation to a private banquet, but a post similar to an official document.

In order to be able to better carry out teaching, it is necessary to select some contents from the existing arithmetic classics, and I hope that Changsun Tang can join it.

This is really sleepy and meets a pillow, and I am worried about what to do with this matter, who knows that this Li Chunfeng will catch up with Dr. Zhao.

With a stroke of the pen, he wrote a letter of agreement and handed it to Zhang Zhong for Zhang Zhong to reply.

This can be seen from the content of the conversation with Wei Zheng, what I want is a book on arithmetic, and I won't think much about the process, so this person and office location have to figure it out by themselves.

I just happened to plan to build a library, so the hardware of this library will do this.

The next day, the eldest grandson did not go to work in the secretary's province.

I obviously belong to the role that people don't like dogs, so don't appear too often.

Make an appointment to meet Li Chunfeng at a library near Dongshi.

Li Chunfeng and Dr. Zhao arrived as promised. After the three of them were polite, they got to the point.

Although the three of them are basically officials, they all belong to the kind of technical officials who are not deeply poisoned, and they are talking like ordinary politicians and going straight to the point.

"Recently, I had a discussion with the Taoist chief on the issue of learning textbooks." Dr. Zhao organized the language.

"That's the case, we feel that the textbooks on arithmetic in Guozi Liuxue are not uniform, basically one teacher and one textbook, and what students have learned is uneven."

"Therefore, we found some textbooks on the textbooks they used, and about ten books on arithmetic, such as "Nine Chapters of Arithmetic", were promulgated by Guozijian as unified textbooks." Li Chunfeng continued.

"That's good, with a unified standard, a lot of things can be solved." The eldest grandson was a little puzzled.

"But recently, we have studied the numbers you proposed, and we think that numbers are very suitable for beginners as the basis of arithmetic, so we plan to ask you to compile a set of basic books on arithmetic, I wonder what you think?" Dr. Zhao is obsessed with arithmetic, but it is Shangguan's confession.

"In that case, I'll be straight to the point." There's no need to be secretive when dealing with technical talent.

"I don't think arithmetic is a good term, and I think it's better to call it math." If you want to change, why not be thorough.

"Does it make a difference?" Li Chunfeng asked, although Li Chunfeng belongs to the top gods, and even His Majesty Li Er respects him, but he also belongs to the category of intellectuals, so as long as he makes achievements in what he cares about, it is easy to win his favor and admiration.

"That's right, arithmetic has defined it as arithmetic, focusing on the process of arithmetic, and I intend to use 'mathematics' to denote it, which is a science about numbers." The eldest grandson brought the concept of mathematics to life.

"Don't you have to count?" Dr. Zhao was also a little confused.

"But it's not just about the calculations, for example, we can try to use numbers to represent the shape of the window."

"You're saying that graphs can also be represented by numbers?" Li Chunfeng somewhat understood.

"Yes. I measured that the four sides of the window were equal to each other, and that each corner was equal, and that if all four sides were equal, it would be this kind of square. "Changsun Tang can only use first-grade math to fool around.

"You're saying that graphs can also be represented by numbers?" Li Chunfeng and Dr. Zhao asked in unison.

"That's it."

"So you're going to change the name of arithmetic?"

"Yes, change to the three parts of arithmetic, equations, and graphs, and the sum of the three parts is called mathematics." The eldest grandson replied.

Here Changsun Tang still played a trick, separated the arithmetic part of algebra, and replaced algebra with something like equations first, because algebra means uncertain, which takes a certain amount of time. And if it is divided into three, there will undoubtedly be much less resistance.

"This can be said to be an epoch-making achievement." After being silent for a while, Li Chunfeng spoke up. Originally, Li Chunfeng was quite satisfied with his arithmetic achievements, but after meeting the eldest grandson, he became like an idiot, this is the power of the times.

We are in the river of history, and it is difficult to swim against the current, even if an emperor as strong as Napoleon could not resist. History is history because it has passed, and we can have many explanations for the past, but none of this can change its course.

And what history has given us is not only the story, but also the heaviness and yearning for the future.