In fact, Qingyun vented so much today, and it was also due to pressure.

At a young age, he had to preside over the grand meeting of the sect, and it was impossible to say that he didn't play a small drum in his heart.

As the day approached, the string in his heart was getting tighter and tighter.

Today, I was first drunk by King Wei, and then stimulated by Yuan Chuntuo.

Bang, heartstrings are confused, people are crazy.

However, smelling the strong medicinal fragrance and looking at the empty beams, his sanity seemed to have recovered a little.

"Hey, Tan-kun.

The location is not fun at all.

Whether I'm Tan Jun or not,

Fourth sister, Miss Yin, Uncle Chen, Uncle Gai, they will all support me silently.

On the contrary, those who don't like me will look down on me even more because of it.

Some people who were not hostile to me in the first place will also inexplicably have some hostility towards me.

These days, I've been feeling it out. ”

Twilight of the slightest,

"What? If you want to quit now, will it be a little late?

The time is also, the momentum is also.

At the moment, it is really impossible to select another person and put him directly in this position to integrate the Tan Sect.

As for rehabilitating Tanzong or something, don't even think about it.

Isn't that what you'd love to see? ”

Qingyun slowly closed his eyes again, forcibly squeezing out the many bad things in the world,

"But is anyone really going to do anything to me?"

"In my opinion, it will not be escaped."

"What do I need to do?"

In fact, long before the marriage, Qingyun treated him like a brother.

At this time, the answer is very natural,

Qingyun didn't mean to ask, but let his inner emotions vent,

It's not a serious answer, it's just a catharsis that guides the other party.

Qingyun finally said the deepest uneasiness hidden in his heart.

Finally, it's time to give a few words of comfort, thinking like this,

"The noble husband and wife are day and night, thinking about whether it is good or not, and its form is also sparse!

Human life is also born with sorrows.

Is there any joy in the fruit?

I am sincere and happy with nothing, and I suffer greatly from the vulgar.

The rights and wrongs of the world are uncertain.

Although, inaction can determine right and wrong.

Therefore, it is said: Heaven and earth do nothing and nothing does nothing.

How can a man do nothing! ”

These few sentences are skewered from "Zhuangzi Zhile",

Although he is familiar with the Taoist sect,

Qingyun diligently read the history of the scriptures and understood its meaning.

The rich and noble think about right and wrong day and night, which is also hard work, not real happiness. Since people are born in the world, they cannot get rid of sorrows, and this is not something that can be avoided by wealth. Is there really happiness in this world? Doing nothing is the ultimate happiness, but people in the world always feel that doing nothing is a great suffering. The cause and effect in this world is full of uncertainties, but even so, pure inaction allows time to naturally precipitate to distinguish right from wrong. Therefore, the Great Dao of Heaven and Earth has done nothing, but nothing is affected by it. Can people do the same?

The so-called inaction of Taoist thought is never inaction.

The objects that Taoism does not use as references are heaven and earth, and are saints.

Therefore, the so-called action here is a higher level of action, ambition, and the kind of help to the world.

The so-called inaction is not deliberate, but it is by no means the kind of stinky temper that is too lazy to sweep a room.

The idea of wu wei is similar to the modern calm philosophy of "let the bullets fly for a while".

Therefore, in the face of the reality full of uncertainty, instead of trying to think about what you should do, it is better to take a break for a while.

Calm down and let the bullets fly for a while,

Those bulls, ghosts, snakes, and gods themselves will eventually show their feet.

Qingyun understood, so he soon fell asleep, and this sleep was both heavy and sound.

It was the sweetest night he'd slept since he returned to the Tiger Prison.

If you want to have patience and entangle with the enemy hidden in the shadows, you must not exhaust yourself first.

The next morning, Qingyun was as if he had changed a different person, his face was radiant, and he and Liu Ying went all the way to visit the characters in the rivers and lakes who had rushed to the Tiger Prison Pass one after another.

When I passed by the temporary residence of King Rencheng, I happened to see Yuan Chuntuo going out.

Qingyun stepped forward generously to say hello.

Yuan Chuntuo also returned the salute as if nothing had happened.

That might be a good ending.

Cui Ling and Old Man Cui have already arrived in the Tiger Prison with Cui Xiu.

Sun Shao, the head of the Sun family who was the Taishou of Jiyin at the time, also rode lightly.

Qingyun visited these two families first, and then according to the news given by King Ren Cheng, he went to explore the direction of the Gao family.

The Gao family also eats the grain of the Great Wei Emperor, so it will naturally not be too late.

It's just that the Zong Zhi Gao Bodhisattva is trying his best to arch, arch, and defend the Luoyang Forbidden Palace, and he can't get out.

In his place came Gao Shusheng, who was separated from the family.

When Qingyun came to the post house, Gao Shusheng was holding his under-term son in the sun.

At that time, there was no custom of confinement in China, especially the northerners, who were greatly influenced by the horseback people, and ordinary people with babies were very rough.

Qingyun had never been in close contact with babies before,

At this time, when he saw the white and chubby boy in Gao Shusheng's hand, he loved it very much, and he couldn't help but step forward to tease.

"The matter of Mrs. Zun's birth, I heard Gao Feique mention it before.

Now I am happy to have a noble son, I really want to congratulate the predecessors of the tree. ”

Qingyun stepped forward politely, and Gao Shusheng did not dare to slack off.

After all, if he doesn't look at the face of the monk and the face of the Buddha, he naturally knows that the "agent of Tanjun" in front of him is a figure that King Wei intends to make popular.

"Hey, I can't afford to be told by this elder.

When Qing Yihan was the sect master, Shusheng was also a junior.

Hey, by the way, the dog took a nickname of He Liuhun according to the customs of the northerners, but the Han name is still the same.

It's better to pick up the day than to hit the sun, it's better to have one by the sect master of Annoying Laoqing? ”

"Me? Name? ”

Qingyun really hadn't done this kind of thing before, so he hurriedly shirked it.

It's just a few rounds of shirk, but I can't shirk it, so I can only say hard,

"Then, that's ugly.

Actually, I don't have much knowledge in my belly, and I can't think of any particularly elegant names.

It's just that this child looks very happy,

It's better to ask for a lip show, let's call it Gao Huan. ”

"Gao Huan? Gao Huan!

Hey, that's a good name!

Shusheng gave the name to Huan'er Xie Sect Master! ”

The fate of the Nine Dragons around the pillar is not just a casual talk, and now Qingyun just casually gave a name, and the Shenwu Emperor who crisscrossed the four states in the future can be regarded as truly "in response to the order" at this moment.

Cui, Sun, the senior family, and the already weak Lu family, in fact, were all supported by King Wei for him.

Qingyun naturally understood this in his heart.

Gai Kun lived in the town of the Gui clan some time ago, and it shouldn't be too late to get to the Tiger Prison.

With the help of these families, plus the Qing and Chen families they represent,

He had indeed received the support of most of the Tan Sect.

It's just that some of the things mentioned by the other party when saying goodbye to Gao Shusheng made Qingyun feel a little worried.

There are many internal tribes in the Tan Sect, and in the past, in order to prevent the internal fighting of the various families from hurting the harmony and damaging the foundation of the Tan Sect, the sect has already established a rule, and the final election of the Tan Monarch should be decided by the five sacrifices of the foreign family.

Although Qingyun has the support of King Wei, if there is a mistake in the voting in the door, the credibility of this new sect master will inevitably be greatly damaged.

At that time, he, the Tan Jun, will be just a puppet in name only, and he will have to rely on the charity of King Wei to survive.

No matter what kind of Ming monarch King Wei was, selling a thousand-year-old Jianghu sect like Dangong to the Northern Dynasty court, whether it was for Qingyun, Tanzongmen or Huaxia scholars, this was an unacceptable thing.

Qingyun's skull hurt a little when he thought about it, and it hurt so much that he didn't want to think about it anymore,

So he didn't want to, let the bullets fly for a while,

Zhuangzi said: Inaction can determine right and wrong.

》》》》》 time to knock on the blackboard《《《《《

Continuing from the previous section, let's talk about ancient mathematics. First of all, I would like to add that there are two main ways to remember decimal numbers in ancient mathematics. One is to take the form of fractions, such as the ancestral rate approximate rate: approximate rate, circle diameter seven, week twenty-two. Both 22/7. The other is the scientific counting method, magnifying the number of digits, such as the ancestral rate: South Xuzhou engaged in Shi Zu Chongzhi, more open the secret method, with a circle diameter of 100 million for a zhang, the circumference of the surplus number of three zhang one foot four inches one minute five centimeters nine milliseconds seven flicker, the number of three zhang one foot four inches one minute five centimeters nine milli seconds six flicker, positive number between the two limits of the surplus and the puffer. Amplify the value by a factor of 100 million. Some officials asked, what is the difference between this kind of counting and modern technology? A: There is no difference in essence, and ancient mathematics is also very rigorous.

In the previous chapter, we said that "Nine Chapters of Arithmetic" and "Island Arithmetic" are equivalent to ancient middle school mathematics textbooks, where does the source come from?

As an ancient country, China has always attached great importance to education. The so-called six arts are the six main courses in the school at that time. Although we ridicule arithmetic as the last, in fact, ancient education is not ambiguous about arithmetic.

The content recorded in the New Tang Dynasty Book and Election Chronicles may subvert our understanding of the ancient imperial examinations. In ancient times, the imperial examination was definitely not as simple as studying the eight strands and writing an article, but was divided into subjects and specialties.

At that time, there were six main sub-disciplines: "Zhi": the purpose of its subjects, there are Xiucai, Mingjing, Junshi, Jinshi, Mingfa, Mingzi, and Mingma.

In the Tang Dynasty, the national university Guozijian was also divided into majors. It's just that the admission of some majors is limited to status. Each of its three departments of Chinese recruits hundreds of people, and non-scholar children are not allowed to enroll. This provision did not improve until the Song Dynasty. However, for special classes including arithmetic, it is possible to admit Shuren, so arithmetic is an important way for Shuren to turn over at that time.

"Zhi": Law, 50 students, calligraphy, 30 students, arithmetic, 30 students, with 8 grades and below the general scholars.

Again: All arithmetic, "Sun Tzu" and "Wu Cao" are limited to one year old, "Nine Chapters" and "Island" are three years old, "Zhang Qiujian" and "Xiahou Yang" are each one year old, "Zhou Ji" and "Five Classics Calculation" are one year old, "Fixation" is four years old, "Ancient Hunting" is three years old, and "Remembering Remains" and "Three Equal Numbers" are all studied at the same time.

At that time, if you had chosen to study in the Department of Mathematics, you would have to study for at least 14 years! The two books "Sun Tzu Sutra" and "Wu Cao Sutra" mainly talk about primary equations, and the content is a system of more than three primary equations. However, since it is a one-time equation, addition, subtraction and subtraction are solved, so we think that it is roughly equivalent to elementary school content. "Nine Chapters of Arithmetic" and "Island Arithmetic" belong to the second difficulty echelon, through the example problems we have given before, you can also roughly understand the difficulty, mainly open square, open square, calculate the area of the square circle, the volume of the cone, trigonometry, measurement substitution, and some simple limit application of such problems. The content of these two books basically takes three years to study.

The book "The Book of Ancient Calculations" needs a special introduction. This is a textbook written by Wang Xiaotong, a professor of accounting in the Tang Dynasty and a national treasure mathematician equivalent to the current academician of the Chinese Academy of Sciences. Therefore, this book should be the core textbook of arithmetic in the Tang Dynasty, and it needs to be chewed carefully, so it needs to be studied for three years. The main content of this book still belongs to the category of elementary mathematics, and Wang Xiaotong's best problem is solving multivariate cubic equations. There is a lot of space in the arithmetic, and it is all about solving cubic equations.

In the foil of such a heavyweight work, we can see a more transcendent existence - "Fixation", which takes four years to study!!

The specific content of the book "Fixation" has now been lost, and the reason for the loss is that scholars cannot investigate its profundity, so they ignore it. In other words, the teacher who teaches mathematics can't understand it, and in the end it can only be thrown aside. The "scholar" mentioned here is none other than Wang Xiaotong, a mathematician who was a national treasure in the Tang Dynasty, and his evaluation of "Fixation" is: his ancestor Xuan's "Fixation" was called exquisite, and he didn't feel that the techniques carried out by Fangyi were all wrong. "Doesn't make sense?" Or does he not understand? From today's point of view, it is likely to be the latter.

Science in China is not always advancing, and sometimes there are countercurrents. In particular, the four largest, cliff-like regressions directly caused China's industrial revolution to be later than that of the West. In the following content of this article, these four cliff regressions will be counted in detail. But in this section, we can first reveal one of them - the mathematical disaster of the Tang Dynasty.

Wang Xiaotong, the first brother of mathematics in the Tang Dynasty, and Li Chunfeng, the second person, what is the level of arithmetic of these two people? Let's talk about this Li Chunfeng first, he couldn't understand Liu Hui's circumcision technique, and criticized the "Nine Chapters of Arithmetic Notes", and his arguments almost died in the circumcision method. When it comes to Liu Hui, I also have to talk about Archimedes by the way, after all, Archimedes is earlier. Archimedes also cut the circle, but he did not summarize the formula of the cut circle, nor did he put forward the idea of a similar limit, but compared it step by step. Therefore, the answer given by Archimedes is not very accurate. The idea of Liu Hui cutting the circle is more similar to advanced mathematics, but it was almost impossible to pass on in the Tang Dynasty. Li Chunfeng can't understand Liu Hui's annotations, Wang Xiaotong can understand some, but although his "Ancient Calculations" is known as a masterpiece, it has been criticized by today's people, except in the field of solving cubic equations, the main content does not exceed the "Nine Chapters of Arithmetic", and the selection and arrangement of example problems is far from it. Through these two points, we can see that in the Tang Dynasty in the seventh century AD, the level of mathematics had regressed to the third century AD.

But in general, the problem of elementary algebraic geometry has been solved in "Chapter Nine", and the problem of triangulation has been deeply dissected in "The Island". So what other mathematical propositions can make a mathematician of Wang Xiaotong's level feel incomprehensible? Then there is only advanced mathematics. In fact, Liu Hui's circumcision method, the principle of group punctuation proposed by the main figure in this article, Zu Xuanzhi, is the preliminary of calculus. "Fixation" has obviously taken a step forward on this issue, according to the statement of "Mengxi Pen Talk: Elephant Numbers": In the previous life, the cultivation of the calendar was only an increase or loss of the old calendar, and the heaven was not actually tested. The method must be measured every night, the dawn, the night, the half-moon and the degree second where the five stars are located, and the book should be recorded. After five years, excluding the clouds and the number of days seen during the day, it can be implemented for three years, and then it is embellished with arithmetic, which is also the so-called "fix" in ancient times. In other words, the technique is a science that calculates the astronomical scale based on perennial observation and inverse function fitting. The Zu's Observatory, which appears in the first chapter of this work, is set according to this description. The construction of functional simulations is a cutting-edge problem in advanced mathematics. The five chapters of this work "Fixation" are from the five aspects of differentiation, integration, partial differentiation of unknown numbers, differential equation reduction function, and function analysis.

At the beginning of the Tang Dynasty, Guozijian tried to promote the "Fixation Technique", but because all arithmetic scholars from top to bottom could not understand it, in the end, the Tang Dynasty students were lucky enough to get rid of the great horror of being dominated by higher mathematics.

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