Why is this happening!

Why is this so?

Wang Ou's three views are a little broken.

She has been studying since she was sensible, and the Taiyuan Wang family has been inherited for thousands of years and has a deep family education. The collection of books is even more than that of the palace, and Wang Ou is a person who likes to read, and the books she has read are no less than any Hongxue Confucian.

The teachers who taught her were also famous in the world. From them, Wang Ou came to the conclusion that it is not difficult to dabble in a knowledge, but if you want to be proficient in a knowledge, it is as difficult as climbing to the sky. Therefore, it is common for learned people to be common, but masters who are proficient in one subject are rare.

But Li Mu's appearance made her waver.

He was only seventeen years old.

Seventeen-year-old boy, Wang Ou has seen a lot, and among the gate valve families, there is no one like Li Shimin who fought in the world at the age of seventeen. Seventeen years old is the age of hunting on horseback and idleness. There is a saying in the Analects, thirty and standing. At the age of thirty, it is not easy to have your own academic system and prestige.

However, the seventeen-year-old Li Mu not only had unparalleled poetry and writing, but also invented the Zhenguan plow, horseshoes, printing, and new wine-making methods...... Either one, it is enough to praise. Now that he has shown his ability in arithmetic, is there really a genius in this world?

Ming arithmetic has always been a profound knowledge in ancient times, and it is also one of the examination subjects of the imperial examination. There are provisions in the "General Dictionary Election", clear calculation, test "Nine Chapters of Law", "Zhang Qiujian", "Xiahou Yang", "Zhou Ji", "Five Classics Calculation" each one, ten passes and six passes; Try "Remember" and "Three Equal Numbers", and nine out of ten are passed. I also tried seven articles of "Fixation", three articles of "Jigu", and six of the ten passes were passed.

To put it simply, in the math test, if you score 60 points, you can go to high school. Ming arithmetic department and first, the rank of the appointment is from the ninth grade. From then on, it was no longer the common people, but the people with official status.

It seems very simple, but at the time of the imperial examination, there were the least number of people who knew how to calculate and ranked, because arithmetic is not like the scriptures, and it can have a concrete understanding. For example, when it comes to filial piety, everyone knows what filial piety is, even if they are not filial and righteous, they also know what a person who is filial and righteous is like. But arithmetic, which requires logic and even imagination, was a very difficult thing for the ancients.

Ancient mathematics, in addition to the naturally formed concepts of addition and subtraction. The concept of multiplication and division was formed relatively late, and the concept of multiplication in China is well documented to have appeared as early as the Spring and Autumn Period and the Warring States Period. In books such as "Xunzi", "Guanzi", "Huainanzi", and "Warring States Policy", you can find sentences such as "three nine twenty-seven", "six eight forty-eight", "four eight thirty-two", "six six thirty-six" and so on. During the Han Dynasty, these sentences were combined to form the original 'Nine Cause Song', which is now the Nine-Nine Multiplication Table.

The concept of 'division' was not put forward in general terms for the first time until the Three Kingdoms Wei period, when Liu Hui annotated the "Nine Chapters of Arithmetic".

The four operations that the ancients learned in elementary schools in later generations were summarized by the ancients from the Spring and Autumn Period to the Three Kingdoms for thousands of years. Even so, the largest number used in ancient times was only '10,000', usually between thousands and hundreds, and even such a small number was very troublesome to calculate. Therefore, those who can do arithmetic can become officials because of this.

But today, after Wang Ou saw Li Mu's four algorithms, he suddenly had a feeling in his heart. In the future, I am afraid that there will be a change. Although Li Mu's four algorithms did not deviate from the framework of "Nine Chapters of Arithmetic" as a whole, the methods he used were more than ten times simpler. "Nine Chapters of Arithmetic" is a book that can only be understood by people with a certain degree of arithmetic, and Li Mu invented these symbols, even if he is an illiterate craftsman, as long as someone explains it to him, he can understand it.

If the four arithmetic is popularized, and the original test questions will be re-examined in the Ming arithmetic subject, I am afraid that there will be hundreds of people who can pass the test.

Wang Ou was amazed by the four calculation laws, and unraveling the 'Hundred Chickens Question' had already made her unbelievable. Baiji asked from the "Qiu Jian Sutra", its nature is a bit similar to the modern "Goldbach conjecture", the author of "Qiu Jian Sutra" Northern Wei Dynasty arithmetic scholar Zhang Qiu Jian thought of this problem, but he did not give a solution in his life, so it is attached to the end of the book, so that future generations can answer.

However, later generations are not angry, and Zhen Luan, an arithmetic scientist in the Northern Zhou Dynasty, and Li Chunfeng, who is now known as a 'prodigy', have both annotated the "Qiu Jian Sutra", but neither of them has given an answer. Especially Li Chunfeng, although he is only 28 years old this year, his achievements in the field of arithmetic have surpassed the ancients. At the age of twenty-six, he re-compiled and annotated the famous Ten Arithmetic Sutras, which were used as a model textbook for the Guozi Prison School of Arithmetic.

Even the question he didn't solve, Li Mu blurted out?

How the hell did he do it!

Wang Ou suddenly felt a wave of grievances in her heart, she was wronged for herself, and she was also wronged for Zhang Qiujian, Zhen Luan, and Li Chunfeng. Why can't others spend a lifetime of hard work to do something, to Li Mu, so easy! God is so unfair!

But she still wanted to know how Li Mu calculated it, Wang Ou took a deep breath, threw away the branch in his hand, looked at Li Mu with a blank eye, and said: "Hou Ye, this 'Hundred Chickens Ask' is an unsolvable problem of the "Qiu Jian Sutra" written by Zhang Qiujian, a master of arithmetic in the Northern Wei Dynasty, and no one has been able to solve it for hundreds of years. Hou Ye's arithmetic is profound, which is amazing. The slave family really wanted to know how Hou Ye calculated it, and asked Hou Ye to give him advice. ”

"Huh?"

Li Mu was a little confused, was the system of ternary indefinite equations unsolvable in the Tang Dynasty? In this way, any college student who travels to the Tang Dynasty can become a master of arithmetic. But not necessarily, most college students, after going to college, squat in the dormitory to play games, give him a system of three-dimensional indefinite equations, and he may not be able to solve it.

In fact, Li Mu has also forgotten a little about how to solve the ternary indefinite equations, but he is a programmer and has a C language instinct in his head. Although I don't have a computer in hand, I can still calculate such a simple question.

Wang Ou suddenly asked him the solution, but he was stumped. He didn't know how to explain the C language to Wang Ou, and he had to think about the solution of the ternary indefinite equation and smooth it out before he knew how to say it.

I had no choice but to refuse for the time being.

Li Mu thought about it, cleared his throat, and said, "Is this solution...... It's the profound part of this algorithm I invented, like the secret method of the craftsman, you ...... Got it? ”

"Huh?" Wang Ou was stunned for a moment, and immediately reacted, yes, how can such a profound algorithm be taught at will? Wang Ou blushed at her own thoughts, and at the same time had some resentment, if Li Mu hadn't rejected her all along, she wouldn't have blurted out so thoughtlessly.

"It's rude on the part of the slave family, and the slave family shouldn't ask."

Li Mu waved his hand and said, "It's not a big deal, I don't have any opinions, and I won't teach you just because you are from the Taiyuan Wang family." It's just that the algorithm for calculating this problem is very difficult, and I won't be able to understand it for a while, so I'll talk to you about it another day when I have leisure. ”

Wang Ou hurriedly said: "The slave family has thanked the Hou Ye first." ”

Li Mu thought for a while and asked, "You just said, this hundred chickens asked, no one has solved it for hundreds of years?" ”

Wang Ou nodded and said, "The algorithm invented by Hou Ye is already far behind the ancients. ”

"Well, you can't say that." Li Mu pretended to be modest, but he was a little proud in his heart, and said: "In this case, I should make these four algorithms public, so that everyone in the world will no longer worry about arithmetic...... Baiji asks just to prove my algorithm, okay, I have decided, tomorrow I will publish the answer and four algorithms of Baiji in Datang Daily! Li Mu couldn't help laughing: "After tomorrow, won't Ben Hou be the arithmetic master of the Tang Dynasty?" Hahaha......"

Wang Ou looked at Li Mu's smug look, and felt helpless and sulky. I really want to see him deflated once, but how can he surprise him every time? Suddenly, she remembered what Li Mu had said about the new gouache that day, and secretly said, could he really make it!

Talking about arithmetic has been delayed for a long time, seeing that the sun is heading west, Wang Ou said that he will not visit today, Li Mu also thought about going home early, and took Wang Ou back to Fangmen by the same road, and each boarded the car and went home.

Li Mu returned home, and before the excitement passed, he found a pen and paper to write down the basic methods of the four operations. wrote down the 'Hundred Chicken Question' again, but did not give a solution, but directly attached the three answers to the back.

When he was done, he stumbled to the printing room. Li Zhien was presiding over the typesetting of tomorrow's Datang Daily, and when he saw Li Mu coming, he put down the manuscript in his hand, jumped into his arms happily, and hugged his neck to play the swing.

Li Mu ripped her off and said, "It's so rude in public...... Don't make a fuss, get down to business. Li Mu called the craftsman in charge of carving movable type over and said, "Lao Bi, take a look at these symbols, carve them out, and they will be published with Datang Daily tomorrow." ”

Lao Bi took Li Mu's manuscript in his hand and looked at it, and said, "Don't worry, Master Hou, these symbols are simple to carve, and they can be carved out in less than an hour." ”

"Good. Lao Bi, you do a good job, Your Majesty has given me the power to appoint officials below the sixth grade of the Ministry of Industry, I have sent an official letter to the Ministry of Officials, and I have found you an official body of a seven-grade printing supervisor, and in a few days the craftsman workshop will be cleaned up, and you will move over with the people of our printing room. In the future, you will be an official of the Ministry of Industry, and you will have to study more in printing. ”

When Lao Bi heard this, he was stunned, and it took him a long time to react, knelt down in front of Li Mu, and said: "Master Hou, the little ancestors have been craftsmen for generations, how can they be officials." Hou Ye is so loving, the little one is grateful, but the little one is worried that he will not do well and lose the face of the Hou Ye! ”

Li Mu turned his face and said, "The official document has been sent, and it can't be recovered." Your Majesty attaches great importance to the Seal Superintendent, and if you don't do it well, it will not be my face, but your own life. I don't want to hear that, so get to work! ”

Lao Bi was terrified, but he had no choice but to respond.