Look at the confident expression of the butler.

Zhen Yi really couldn't think of it.

As for the method of looking at the appearance by touching the bones, it is still too evil.

And the housekeeper in front of him, Lao Wu, saw that the old man asked, and he didn't sell it.

"Master, this is actually very easy to calculate, and the answers are all in the nine chapters of arithmetic."

Well?

Nine chapters of arithmetic!

When after hearing the name.

Zhen Yi was stunned again.

What does this thing have to do with the nine-chapter arithmetic?

If you say it's the first one, I'll believe it, but you didn't even have a point just now.

"Because the master's three paper books are unopened! This paper was bought by the villain for the master. ”

"The villain knows that there are nine sheets of paper in each volume, so nine books are naturally 81 sheets!"

Isn't this the multiplication formula table in the nine chapters of arithmetic?

The butler nodded, with a look that was normal.

"Huh?" Zhen Yi was even more confused after hearing this.

"Wait! What nine, nine, why 81? ”

Hearing the words of the housekeeper that he had never heard before, Zhen Yi only felt dazed.

"Oh, sir, this is actually the multiplication formula table memorized in the nine chapters of arithmetic! If you don't believe it, take it and see it! ”

The housekeeper didn't know how to explain it, so he carefully took out his treasured nine-chapter arithmetic directly from his arms.

Zhen Yi took the booklet and didn't say much.

Immediately open it.

When you see the words on the first page are:

Zhen Yi couldn't help but admire.

What a word!

The pen is in the shape of a dragon!

Although I haven't seen Cao Yu, the words are like his person.

Zhen Yi is also becoming more and more satisfied with his future uncle.

If you want this Cao Yu, it is really as powerful as rumored by the outside world.

It's not a grievance to marry your own little girl.

Compared with Yuan Shao's son, it is not bad.

After this thought, Zhen Yi continued to flip through it.

Until I saw the multiplication formula table of "Nine Chapters of Arithmetic".

Looking at the strange symbols and numbers on it, I was confused.

"Ahem......"

"Master, this vertical is one, and this ass is three ......" The housekeeper noticed the master's expression, and immediately began to explain.

Zhen Yi is also full of wet books, and he has read a lot since he was a child.

One click.

When you understand the magic of this number.

I couldn't help but applaud.

"This Cao Yu really has some skills! Just inventing this number can improve the speed at which the bookkeeper writes the ledger! ”

You must know that in the past, it was all capitalized one, two, and three.

There are many strokes, and they are dense and dense, and they can't be seen clearly.

If this is all changed to 1, 2, 3......

That's definitely a lot of time savings.

After understanding the magic of this number, Zhen Yi found a strange symbol.

"Old Wu, what does it mean that these two chopsticks are crossed between 9 and 9?" Zhen Yi asked without understanding.

"Master, this is not chopsticks, this is the multiplication number, which is the reason why I can answer without counting when you asked me how much paper I have just now!"

"Do you see the last number? 81！ Is it the number on the paper just now? ”

Well?

When I saw the last number, it was really 81.

Now Zhen Yi is not calm at all.

"You mean that he, Cao Yu, has not yet started arithmetic, and he has already been able to predict the answer?"

"There are some numbers on it, but they are all answers?"

If that's the case, it's terrifying.

Zhen Yi didn't have time to listen to the housekeeper, so he immediately took out his own little abacus.

I began to take two of the nine volumes of paper I had just taken, and left seven volumes.

Let's start counting how much paper there is.

Bang Bang Bang !!

The abacus beads kept being fiddled.

The beads of sweat on Zhen Yi's forehead were dripping down.

Until a few minutes later.

The answer is finally out.

63！！！

Then Zhen Yi turned out the arithmetic records in the nine chapters just now.

When you see the exact same number.

Totally shocked!

it!

This thing really has the ability to predict the future!

Zhen Yi's pupils couldn't help but shrink, and the nine-chapter arithmetic in his hand couldn't help but tighten a little.

O Book of God!

Strange people!

This uncle is recognized.

No, no, I have to reply to Cao Cao immediately.

The dowry should also be prepared more generously.

Send all the money we have left?

Such a good uncle is rushing to get on the pole.

In case someone else's girl preempts it.

Wouldn't it be a big loss to let your little girl be small.

Sooner or later, this should be done!

Thinking of this, Zhen Yi was already a little anxious.

However, it was a little strange to see that Lao Wu on the side had not left yet.

"Master, the villain's book is still in your hands!" Seeing the old man's expression, Lao Wu rubbed his hands a little embarrassed.

It's not that he doesn't know how to behave.

It's really his book that is so precious.

He's going to be a family heirloom.

The most important thing is that this book was also bought at a high price from the people he met from Xudu in the teahouse.

It's hard to find a second copy of this thing in the whole city.

If it's something else, it's sent.

"Oh! Old Wu! Look at you, I look like I'm going to rob you! Zhen Yi was also a little embarrassed to say this.

But when I thought about it, I saw the magic of this book.

There is also some reluctance.

"Don't worry, this book won't want you, the little girl is about to get married, so you should be a gift!"

"Ah...... Lord......"

"Don't worry! Soon Cao Yu will soon become my aunt, how many books you want, even if you want to bring an autograph, I will give it to you! ”

Clams???

Miss is getting married?

And my uncle is still Cao Yu's son?

The housekeeper was completely dumbfounded, he hadn't heard of this news!