PS: Last week, due to some things at home, I couldn't go online and update, and I didn't save the manuscript, so I broke the update, I'm really sorry. Now update a chapter first.,This week's reply to the normal update of a daily update.,If there is a deposit, I will try to make up for what I owe last week.,Please forgive me greatly.。

Thank you for the recommendation votes on June 15th. Special thanks to ffdffdf for your care and sign-in these days.

Finally, I ask for your forgiveness again, if there is a similar break in the future, I will definitely notify you in advance, this time the matter is more urgent, so I can't take care of it, I'm really sorry.

The matter of the library can only be put aside for the time being, how can the library be opened without books?

But this is not in line with the character and interests of Changsun Tang, what a good opportunity to make a name for himself, and Changsun Tang also plans to gradually develop a comprehensive university through the platform of the library.

The eldest grandson, who had learned from the pain, discovered the problem and thought of a solution.

If the mountain doesn't come to me, then I'll go to the mountain, don't you all want to publish a book, don't you all want to see my jokes?

Well, I decided to show you guys my bigger jokes.

So, the eldest grandson decided to start writing a book on his own.

As soon as this wind came out, Changsun Tang's limelight was unrivaled for a while, and he immediately topped the list of the four major jokes, successfully squeezing out "Cheng Biting Jin's Poems", and accounted for half of the list.

At this time, the eldest grandson Tang ignored these gossips, but kept biting the pen.

"What's so good about that? Is it the "Three Character Classic" or the "Rhythm of Rhyme"? Is it "Three Hundred Tang Poems" or "Three Hundred Song Poems"? Is it "Journey to the West" or "Water Margin"? "The eldest grandson is very troubled.

You say that modern people have difficulty in choosing.

After all, Changsun Tang didn't choose any of them, not because his skin was not thick enough, he was forced to this by a group of natives, what is this cheekiness?

"The Three Character Classic" and "Rhythm and Rhyme" belong to enlightenment readings and are not suitable for the current scene; "Three Hundred Tang Poems" and "Three Hundred Song Poems" are necessary for pretending, and there is no need to play when they go out all at once; "Journey to the West" and "Water Margin" think about the original intention of running a library, let's wash and sleep.

This is not good, that is not suitable, then I can only bite the bullet myself, fortunately, I have thousands of years of knowledge in later generations to pave the way, this little problem is still drizzle.

So what to write about?

Heliocentrism? Think about Bruno who was burned to death, although the Tang Dynasty was relatively open, this understanding of the universe is still relatively reliable, but once this is said, it is equivalent to putting a label on himself as a "god stick".

"Evolution"? You tell His Majesty Li Er that your ancestor is a monkey, and you can see what the fate is.

The three laws of mechanics, well, let's put this first, don't talk about inertia, it's not good to be misunderstood as virtue.

If you think about it, there is only mathematics left, and the subject that dominates the world with a brush will not be misunderstood.

A month later, arithmetic.

Some arithmetic students have set up the venue early, and today there will be an important event: the eldest grandson and three thousand arithmetic students. Of course, three thousand is a bit exaggerated, but even this still attracts the attention of many people.

At this time, people's lives are too monotonous, monotonous to the point that anything can be talked about for a long time, for this kind of lively scene, Chang'an people will naturally not miss it.

In the courtyard where arithmetic is the largest, a table is arranged on the steps, a wooden board blackened with lacquer, and chalk made by the eldest grandson.

There was no one on the stage, but the audience was full, and even Li Chunfeng rushed here early, and sat in the center of the front row as a recognized arithmetic master.

A teaching assistant was sent as the moderator in arithmetic, and the rest of the professors were all absent.

"Where did this eldest grandson come from?" Passerby A asked.

"The sixth son of the eldest grandson family." There are those who know something.

"Even if it is the sixth son of the eldest grandson family, it is okay to show off his knowledge, this guest is not a place for him to show off."

"This eldest grandson is a bit of a real material, and he also graduated from this arithmetic, and he was quite favored by Dr. Zhao, a doctor of arithmetic at that time." There are those who know some of the details.

"Even if he is rich and rich, how can he be confident that he can pass so many experts?" This is what the vast majority of people think. This kind of thinking is not a matter of attitude and self-confidence, but of vision.

"Yes, yes, I'll see how he ends, I've prepared a lot of problems that I collected before, and some of them came from the land of Tianzhu and Taixi, let's see how he ends." He is also an avid man of arithmetic.

"Dangdangdang." A hurried bell rang, and the noisy scene fell silent.

"Welcome to today's discussion, we have invited today's protagonist, Changsun Tang, to play." The protagonist in charge of hosting invited Changsun Tang with a simple sentence, and there was no suspense at all, the key is that even he didn't know what Changsun Tang was going to do today.

"Ahem, welcome to come and cheer, there are two main topics today, the first is to explain some questions about numbers and equations, and the second is to discuss some questions about arithmetic together." The eldest grandson tried his best to amplify his voice, but he was still a little reluctant.

Today is like a press conference for Changsun Tang, and the content released is naturally about numbers and equations.

The introduction of Arabic numerals was of great significance, and most of the mathematical problems of ancient China could be solved with equations.

This is the intention of the eldest grandson, to divide the mathematics of later generations into three volumes: "Arithmetic", "Equations" and "Figures".

Originally, according to the classification of later generations, only algebra and geometry were needed, but considering the lack of understanding of symbols at this time, arithmetic and equations were separated, and the hole of algebra was left to others to fill!

"Today, I will first introduce a new counting method and calculation method...... "Changsun Tang blended the mathematics knowledge before the fourth grade of primary school together, and gave a pleasant mathematics lesson, you don't have to say, to teach a group of people, you can't follow his way of thinking, but follow your own way of thinking."

Don't talk to fools, because they can lower your IQ to the same level as theirs, and then easily beat you with their experience in the field they are familiar with.

So I described myself as a fool? The eldest grandson thought secretly.

But the effect is still okay, half an hour of speech, the black pressure below is full of notes, maybe there were a few disagreeable at first, but when Changsun Tang talked about counting and four operations, there was no sound of laughter.

It's okay for us to laugh at others for appearing to have our own merits, otherwise it's easy to be slapped in the face.

"Ye is a traverser, so stay on the shoulders of thousands of years of civilization in the future, just with your little thing, it is also the level of Xiao Ye when he was six years old." The eldest grandson looked at the silent crowd under the stage, and thought proudly.

Pick up the gaiwan tea, deliberately touch the lid on the edge of the tea bowl a few times, and make a crisp sound, well, yes, this ceramic is burned well, and the eldest grandson tasted it beautifully.