My father is Yuan Shu?But I want to be a Cao thief

Jiujiang, inside a house in Hefei.

Chu Feng was standing at the front. He was giving a lecture at the moment, and he could be regarded as training a teacher. Most of them were children from poor families, and there were also some children from aristocratic families.

At this moment they dare not be serious,
Because Lu Su, Zhang Zhao, Jia Xu, Tian Feng, and Ju Shou were all listening carefully, the more they listened, the more frightened they became. The knowledge Chu Feng conveyed was indeed too terrifying.
Especially for pinyin literacy, they found it very necessary to help enlightenment education. Putting aside what they knew before, using pinyin can achieve some results in just a few days.

It is estimated that teaching children, those with a little stronger learning ability, can learn it in about a month.

Lu Su and the others were all overwhelmed by Chu Feng. They knew Chu Feng's literacy method when they taught it before, but learning it by themselves now is really beneficial.

The sages of this method cannot be compared.

The name of Chu Feng is destined to become the most dazzling existence in the history books, and they are also looking forward to how these things Chu Feng proposed will be carried forward in their hands.

"Everyone, what Pinyin needs is a lot of practice. Later, you will communicate with each other in private. Today, apart from Pinyin, I will teach you something new."

Chu Feng erased the pinyin and looked at everyone solemnly.

Hearing that Chu Feng still had something to teach, everyone's eyes became hot instantly, especially Lu Su Jia Xu and others at the front were all gearing up.

They call themselves the wise men of this world,
But in front of Chu Feng, they felt that their cognition was so narrow and insignificant, and they were not at the same level as Chu Feng.

They are even more flocking to what Chu Feng taught, which is not found in any of these history books.

And among the following students, there is a rather special person, Zhuge Liang.After being controlled by Chu Feng, he voluntarily requested to come to Yangzhou.

Of course, it is also possible that Chu Feng defeated Yuan Shao.

After all, if he doesn't leave the mountain, it probably has nothing to do with him, especially if he has no chance to seek refuge with other princes.

What's more, he is also clear about Chu Feng's various deeds,

He admired Chu Feng's talent, so he came to Yangzhou.

As soon as he arrived here, he learned about the imperial examination system and enlightenment education introduced by Chu Feng. Regardless of his family status, Chu Feng's move is definitely forward-looking.
The development of history is destined to reach this point,
But Chu Feng let this step come ahead of time.

"My lord, what's the new thing?" Tian Feng eagerly asked, the pinyin had already benefited him a lot, and he was even more curious about what the new thing was.

"Arithmetic!" Chu Feng chuckled.

"In daily life, in addition to reading and writing, you also need to have a certain basic arithmetic ability, and the arithmetic summed up by the sages is the nine chapters arithmetic."

"This algorithm is indeed the crystallization of human wisdom, but it is not convenient enough, not convenient enough. Moreover, arithmetic should teach students the conversion of various titles and so on."

Chu Feng said it was Wang Zha,
He directly denied, or questioned, the Nine Chapters of Arithmetic that has been circulating,
You must know that any great power uses the nine-chapter arithmetic as the basis of ordinary calculations. Chu Feng denied it when he opened his mouth. He felt that it was more complicated and inconvenient.
Dare to question the sages,
In one word, awesome!
If it was someone else, they should all be angry,

But these words were said by Chu Feng, and they had some expectations.

Of course, Chu Feng also has enough confidence to say this. Mathematics has been developed for countless years in later generations. Perhaps there are some merits in the nine chapters of arithmetic.
But most of them are not as simple and easy to understand as the basic mathematics of later generations.

As he said that, Chu Feng wrote the Chinese characters from one to ten on the blackboard, and then wrote the Arabic numerals from one to ten on the bottom. They didn't know these numbers.

"These are numbers, each of which corresponds to our Chinese characters above, and the pronunciation is the same, one, two, three, four, etc. You can understand it as abbreviations for easy calculation."

Seeing that everyone was surprised, Chu Feng immediately explained.

"Basic arithmetic is nothing more than addition, subtraction, multiplication and division. Addition and subtraction may not be difficult to understand, but multiplication and division are more complicated, especially when using other algorithms to obtain results."

"For example, Lu Su's family has 57 mu of land, and each mu of land has 35 buckets of grain. Who can quickly calculate how much grain the family can harvest this year?"

Chu Feng looked at the crowd and smiled warmly.

As soon as this remark came out, everyone picked up the straw paper in front of them and began to calculate, but before there is no simple algorithm for this kind of arithmetic, the calculation is too complicated,

For a while, many people frowned,

Lu Su raised his eyebrows, and Jia Xu and the others were also in deep thought. They were embarrassed to write and wanted to try their mental calculations. After all, the five of them are great sages.
At this time, whoever writes is embarrassed,
However, the amount of calculation is relatively large,
Before Lu Su and the others could react, Zhuge Liang raised his hand. He was young but had a calm face, and was eight feet tall, with a dignified appearance that was indeed handsome.

"Return to the lord, Lu Su's family harvested 95 buckets of grain in autumn."

Chu Feng: "???"

Chu Feng was depressed, he wanted to pretend to be aggressive,
But this Zhuge Liang is really a bit of a goddamn evildoer, he paid attention to Zhuge Liang, he didn't write a pen from the beginning to the end, that is to say, he multiplied two numbers in his mind,
The key is to get the answer so quickly and accurately,
This made Chu Feng a little unconfident. Why did he feel that Zhuge Liang's mental arithmetic was not as good as learning mathematics? He would definitely not be able to calculate this mentally in a short time.
You have to do the math,

"Who is this person, and why is he so powerful?"

"Zhuge's family, a big family in Xuzhou, it is said that the lord takes special care of him,"

"Tsk tsk, my lord really has sharp eyesight, I'm afraid this person's intelligence is not simple!"

Everyone was talking non-stop, Jia Xu and Lu Su also looked at Zhuge Liang, they were all mentally calculating, and they couldn't compare to a young boy, which made them feel ashamed,
But having said that, Zhuge Liang's performance is indeed worthy of Chu Feng's repeated mentions back then. I am afraid that this person's intelligence will definitely not be inferior to theirs in time, or even higher.

For this kind of mental calculation, few people can do it.

"Kong Ming, how did you calculate so quickly?" Chu Feng was a little curious. No wonder Zhuge Liang was able to run the country in an orderly manner, including the subsequent battles.
This IQ is really not bragging,

Everyone also looked at Zhuge Liang, a little curious.

"It's just mental arithmetic. I think the master's algorithm must be faster than my mental calculation, so I won't make a fool of myself." Zhuge Liang smiled gently and did not answer.

But this stumped Chu Feng,

My own algorithm is indeed very fast, but it is far behind yours.

But thinking of Zhuge Liang, who is so rare in a thousand years, naturally he cannot be compared with him. The algorithm must be practical and easy to use in later generations, and immediately said: "Of course the algorithm is divided into people."

"As for the speed, I'm talking about an algorithm that allows ordinary people to quickly calculate something, so that many things won't be confused for many days."

Speaking of this, Chu Feng listed the two numbers just now, 57 on the top and 35 on the bottom.

"The next five." Chu Feng used all his strength to explain the process, but he always felt that what he said was not satisfactory. He seemed to only remember the calculation process.

I can't remember how the teacher taught me.
Grandma, I hate less when I learn how to use it, this is too irritating!
Trying to think back, it was divided into ten and one, but in short, the students taught were confused and all a little dizzy, but Zhuge Liang's eyes flashed,

His mental arithmetic is also limited to multiplying two-digit numbers, and he can't do three-digit numbers at all, but watching Chu Fenglie's calculation process, many things appeared in his mind,

He faintly seemed to understand what Chu Feng expressed,

Immediately, he picked up a pen and calculated according to what Chu Feng wrote. This time, he did not try to calculate in his mind, but wrote two numbers casually, and then calculated according to Chu Feng's process.

When solving problems, the difficulty drops sharply,

Because it all becomes a few multiplied by a few, there is almost no difficulty in this, and then add zeros according to the tens and hundreds of digits, and then he quickly lists a few numbers,
Adding them up one by one, looking at the answer, his pupils shrank suddenly, and his whole body showed ecstasy. The arithmetic Chu Feng taught might not be as fast as his mental arithmetic,
But there are too many restrictions on mental arithmetic, and ordinary people don't have this ability at all.
That is to say, if the things Chu Feng listed are really understandable, I am afraid that they will far surpass any calculation methods in ancient and modern times, and the speed will also be greatly improved.
Because after simplification, the multiplication of one-digit numbers can get the answer quickly, that is to say, in theory, even if three digits are multiplied by three digits or even four digits are multiplied by four digits, as long as the steps are correct, it can be calculated.

Thinking of this, Zhuge Liang's pupils were shocked,

Too strong, Chu Feng can make the enemy frightened when he fights, the economy of the country is strong and powerful, the army is even screaming, and he is invincible when he studies all kinds of things.
Now, even these things are far superior to the sages, which can not help but make Zhuge Liang's eyes hot. He was smart since he was a child, and he can even have a photographic memory

Other people's study rooms are full of books,

But the books in his study had been emptied a long time ago, and they were all in his mind. He searched everywhere for books to read, but he found very little. But until just now, he discovered that Chu Feng was the ancient book that walked,

I'm afraid he can find more of what he wants to know in him,
Immediately, he wrote another three-digit multiplication, because Chinese characters already have tens of millions, and he can quickly take care of the subsequent zeros for faster calculations.
The hundreds digit is multiplied by three, the tens digit is multiplied by three, and the ones digit is multiplied by three.
Then quickly add and subtract, and according to what Chu Feng said, there is a carry, Zhuge Liang's brain is running fast, in fact, the decomposition is the multiplication, division, addition and subtraction between ones,
It's just that zero needs to be counted later.

It's faster to decompose and calculate. Zhuge Liang's brain is running fast, and then he adds up quickly. He only used a few tens of breaths to multiply and divide a three-digit number.

Looking at the final answer, he took a deep breath,

His heart was trembling and he was excited, as if he had discovered a new continent, the Four Books and Five Classics, various art of war, in short, he had studied all the ancient books, and now he was excited to discover new ones.

He still doesn't know if this answer is correct, but he instinctively tells himself that this is the correct answer.

Zhuge Liang began to use his own method to check. If the answer is correct, then he is sure that no one can surpass this algorithm even after a thousand years.

So convenient, so fast.

He can't calculate three-digit numbers in his head, even if he does the calculation with paper, he has to make a lot of drafts to calculate it. After all, multiplication and division of three-digit numbers involves more things.

But it only took him dozens of breaths to get the answer just now,
This speed is enough to subvert his cognition!

Chu Feng couldn't think of how to explain it for a while. Seeing Zhuge Liang's seriousness and smirk at times, he immediately asked, "What is Kong Ming up to?"

"My lord, wait for me to check the calculation later!"

Zhuge Liang was excited, and he was thinking about calculations after replying.

Everyone fell into curiosity and looked at Zhuge Liang. They still didn't know what Zhuge Liang was doing, but judging by his expression, could it be that he understood this thing thoroughly?
If that's the case, it's too scary.

One must know that Zhuge Liang has not been long since he arrived in Yangzhou, so it is impossible for Chu Feng to teach him first, that is to say, this person's learning ability is indeed top-notch.

Lu Su stroked his beard: "What do you think he is doing?"

Jia Xu chuckled: "I don't know, but I know that the lord mentioned imprisoning or killing this person many times back then. It can be seen that this person is so wise that even the lord is afraid of him."

"It's just that I am sometimes curious, how did my lord know that this person is so intelligent? You know, I am in Nanyang, and I have never heard of Zhuge Liang's name, and he has not yet emerged."

Jia Xu expressed the suspicion in his heart,
"Wen He, you can't speculate on this matter, but the lord's eyes are vicious, and he won't miss the people he sees." Lu Su hurriedly said solemnly.

In fact, he already had doubts.

But as subordinates, they cannot criticize this matter.

Jia Xu smiled bitterly and shook his head. He always felt that Chu Feng knew everything during the contact with Chu Feng, as if he had no privacy in front of him.
Including Chu Feng communicating with him privately before,
Some words are obviously not something that can be detected by detection. In addition, all kinds of things Chu Feng said, such as flying, such as missiles, etc., are very strange.
The academics proposed today are even more astonishing. None of the sages can compare with him, and they are far behind.

The straw paper was spread out one by one, Zhuge Liang continued to calculate, and the distance to the answer was getting closer and closer. Finally, under the eyes of everyone, Zhuge Liang wrote,
And with joy and shock on his face,

He who has always been calm and sophisticated is now cheerful.

"It's done, it really works."

Because the answer he calculated is exactly the same as the answer he calculated before, but it took him nearly a quarter of an hour to calculate it with his own method.

You know, it's because his intelligence is different from ordinary people,
In other words, there is absolutely no problem with the calculation method proposed by Chu Feng.

"Everyone, just now I used the method taught by the lord to calculate the multiplication of three-digit numbers. It only took tens of breaths to solve the answer. This method is infinitely better than the method of the sages."

Zhuge Liang got up, with a face full of admiration for Chu Feng,
"Multiply three digits together? The answer can be solved in tens of breaths?" Everyone exclaimed. Sometimes they even have to solve three digits in a day, and the quick ones are calculated by hours.
But Zhuge Liang said that the three-digit number only took tens of breaths?

You know, this is multiplication and division, not addition and subtraction. Three-digit multiplication and division involve too much, and there are many things to calculate.

"My lord, may I ask if this method has a name?" Zhuge Liang looked at Chu Feng with admiration, and the only person Zhuge Liang admired was Chu Feng.

"No, Kong Ming, do you really understand?" Chu Feng asked, with a little sigh in his heart,

Boy, are all smart people like this?

It's no wonder that in later generations, he has seen some academic masters who can understand some things.