Lan Ruochan

Chapter 169 Love is the most dangerous since ancient times, but now you should be careful, young hero
In fact, Qingyun vented so much today because of pressure.

At such a young age, he had to preside over the grand gathering of the sect, and it was impossible for him not to play a small drum in his heart.

As the days approached, the string in his heart became tighter and tighter.
Today, he was first scolded by King Wei, and then stimulated by Yuan Chuntuo.

Crack, the heartstrings are chaotic, and people are crazy.

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

"Hey, Tangun.

This position is no fun at all.

Whether I am Tangun or not,
Fourth Sister, Miss Yin, Uncle Chen, Uncle Gai, they will all silently support me.

On the contrary, those who can't understand me will dislike me even more.

Some people who are not hostile to me, will inexplicably become hostile to me,
These days, I can feel it. "

With a faint smile,

"What? Is it too late to retreat now?

Time also, potential also.

At present, it is really impossible to choose another person, and directly take him to this position to integrate Tanzong.

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

Isn't this what you like to see? "

Qingyun slowly closed his eyes again, forcing the many bad things in the world out of his eyes,
"But, will someone really attack me?"

"In my opinion, there is no escape."

"What do I need to do?"

In fact, long before becoming sworn brothers, Qingyun treated him like an elder brother.

The answer at this time was very natural.
Qingyun didn't mean to ask, but just let his inner emotions vent,
It's not a serious answer, it's just guiding the other party to vent.

Qingyun finally expressed the uneasiness hidden in the deepest part of his heart.

It's finally time to give some words of consolation, Tinzhi thought,

"A noble husband spends day and night thinking about whether he is good or not, and his form is also sparse!

Human life is also born with worry.

Is there any joy or nothing?

I am happy with doing nothing, but also suffering from vulgarity.

It is uncertain whether the world is right or wrong.

Although, inaction can determine right from wrong.

Therefore, it is said: Heaven and earth do nothing, and there is nothing that cannot be done.

How can people do nothing! "

These few words are strung together from "Zhuangzi Zhiyue",
Of course he is familiar with Taoist origin,

Qing Yun studied scriptures and history frequently, so he understood its meaning.

Rich people think about right and wrong day and night, which is also exhausting, not real happiness.Since a person is born in the world, he cannot escape suffering. This is not something that can be avoided by wealth.Is there really bliss in this world?Doing nothing is the ultimate happiness, but the world always feels that doing nothing is a great suffering.The cause and effect in this world are full of uncertainties. Even so, we can tell right from wrong by being pure and inaction, allowing time to settle naturally.Therefore, the Great Dao of Heaven and Earth did nothing, but nothing was affected by it.Can people do nothing like this?
The so-called inaction in Taoism has never been inaction.

The objects that Taoist Wuwei uses as references are heaven and earth, and saints.

So the so-called doing here is a higher level of action, it is an ambition, it is the desire to help the world.

The so-called inaction is just not deliberate, but it is definitely not the kind of bad temper that is too lazy to sweep the house.

The idea of ​​doing nothing is similar to the modern calm philosophy of "let the bullets fly for a while".

Therefore, in the face of reality full of uncertainties, instead of trying to think about what to do, it is better to take a break for a while,
Be still, let the bullets fly for a while,

Those bull ghosts and snake gods will eventually show their feet.

Qingyun understood, so he soon fell asleep, and this time he slept soundly and soundly.

This was the soundest night he had slept since returning to the tiger prison.

If you want to be patient and entangle with enemies hidden in the dark, you must not exhaust yourself first.

The next morning, Qing Yun looked like a different person, with a radiant face, and along with Di Zhi and Liu Ying, he went to pay a visit to the people in the rivers and lakes who rushed to Hulao Pass one after another.

When passing the temporary residence of King Rencheng, he happened to see Yuan Chuntuo going out.

Qingyun stepped forward to say hello generously.

Yuan Chuntuo also returned the gift indifferently, as if nothing had happened.

This may be a good ending.

Cui Ling and Mr. Cui brought Cui Xiu to the Hulao.

Sun Shao, the patriarch of the Sun family who was the prefect of Jiyin at that time, also came on Qingqi.

Qingyun visited these two families first, and then followed the news given by King Ren Cheng, and went to check the direction of Gao's family.

The Gao family also ate the Great Wei Emperor's food, so it was naturally not too late.

It's just that Zongzhigao Bodhisattva is trying his best to arch, arch, and defend the Forbidden Palace of Luoyang, and he can't get rid of his body.
The one who replaced him was the branch Gao Shusheng.

When Qingyun came to the posthouse, Gao Shusheng was holding his immature son and basking in the sun.

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

Qingyun had never been in close contact with a baby before.
At this time, when he saw the white and fat boy in Gao Shusheng's hand, he liked it very much, so he couldn't help teasing him.

"I heard Gao Feique mention the matter of Mrs. Zun giving birth earlier.

Now that I have a precious son, I really want to congratulate Senior Shusheng. "

Qingyun stepped forward to be polite, but Gao Shusheng didn't dare to neglect him.

After all, instead of looking at the face of the monk and the face of the Buddha, he naturally knew that the "Agent of Tangun" in front of him was someone the King of Wei intended to make popular.

"Hey, I can't bear the words of the elders.

When Qing Yihan was the suzerain, Shusheng was also a junior.

Hey, by the way, Gouzi took the nickname of He Liuhun according to the custom of the northerners, but the Chinese name is still used.

Picking up the sun is worse than bumping into the sun, how about letting Sect Leader Lao Qing draw up one? "

"Me? A name?"

Qingyun had never done such a thing before, so he hurriedly shied away.

It's just a few rounds of evasion, but still can't evade, so I can only bite the bullet and say,
"Then, that would be a shame.

In fact, I have little knowledge in my stomach, and I can't think of any particularly elegant names.

It's just that the kid looks so happy.

Why don't you just call me Gao Huan for a compliment. "

"Gao Huan? Gao Huan!

Hey, what a good name!
Shu Sheng thanked the suzerain for naming Huan'er! "

The fate of Nine Dragons around the pillars is not casually said, but now Qingyun just picked up a name casually, and the Emperor Shenwu who will travel across the four states in the future can be regarded as truly "following his fate" at this moment.

The three families of Cui, Sun and Gao, as well as the already weak Lu family, were actually entrusted by King Wei to find him.

Qingyun naturally understood this point.

Gai Kun lived in Goushi Town some time ago, so it shouldn't be too late to arrive at Hulao.

With the help of these families, plus the Qing and Chen families represented by me,

He has indeed received the support of most of Tanzong.

It's just that some things the other party mentioned when saying goodbye to Gao Shusheng made Qing Yun feel a little bit worried.

There are many branches within the Tanzong. In the past, in order to prevent the rivalry among the various families from hurting the harmony and damaging the foundation of the Tanzong, the clan has already established a rule that the final election of the Tangun should be decided by the five sacrifices of the outer family. .

Although Qingyun has the support of the King of Wei, if there is a mistake in the vote meeting, the credibility of the new suzerain will be greatly damaged.

At that time, he, Tangun, would be just a puppet in name only, relying entirely on King Wei's charity to survive.

No matter what kind of wise king Wei Wang is, it is unacceptable for Qingyun, Tan Zongmen or Huaxia scholars to sell Tan Palace, a thousand-year-old Jianghu sect, to the Northern Dynasty court.

Qingyun's head ached a little from thinking about it, and the pain made him unwilling to think about it any more.
So he didn't want to, let the bullet fly for a while,

Zhuangzi said: Inaction can determine right and wrong.

"""""Knock on the blackboard time"""""

Let's continue the topic of the previous section and talk about ancient mathematics.First of all, I would like to add that there are two main ways to record decimals in ancient mathematics.One is to take the fractional form of the column formula, such as the ancestor rate and the rate: the rate, the circle diameter is seven, and the week is 22.Both 22/7.The other is the scientific notation method, which enlarges the number of digits, such as the ancestral rate: Shi Zuchongzhi, who worked in South Xuzhou, developed a more secret method, using a circle with a diameter of [-] million as one zhang, and the circumference of the surplus is three zhang, one chi, four inches, one minute and five centimeters Nine milliseconds and seven flickers, the number is three zhang, one foot, four inches, one minute, five centimeters, nine milliseconds, and six flickers, and the positive number is between the two limits of surplus.Directly magnify the value by [-] million times.Some observers asked, what is the difference between counting like this and modern technical methods?Answer: There is no difference in essence. Ancient mathematics is also very rigorous.

In the previous chapter, we mentioned that "Nine Chapters on Arithmetic" and "Sea Island Arithmetic" are equivalent to ancient middle school mathematics textbooks. Where did they come from?
China, a great ancient country, has always attached great importance to education.The so-called six arts are the six main subjects in the school at that time.Although we ridicule that mathematics is at the bottom of the list, in fact, ancient education was not ambiguous about mathematics.

The content recorded in "New Book of Tang: Election Records" may subvert our understanding of ancient imperial examinations through novels.The ancient imperial examinations were definitely not as simple as studying stereotyped essays or writing an article, but were divided into subjects and majors.

At that time, there were six main divisions: "Zhi": its divisions included scholars, Ming Jing, handsome scholars, Jinshi, Ming Fa, Ming characters, and Ming calculation.

In the Tang Dynasty, Guozijian, a national university, was also divided into majors.It's just that some majors have limited admission status.Among them, the three departments of liberal arts each recruit hundreds of people, and the children of non-gentry families are not allowed to enroll.This provision did not improve until the Song Dynasty.But for special classes including mathematics, ordinary people can be admitted. Therefore, arithmetic was an important way for ordinary people to turn around. As long as there is this one, there will be countless people who face difficulties and squeeze this single-plank bridge :

"Zhi": Luxue (Law School), 50 students, Calligraphy (Art Academy), 30 students, Mathematics (Mathematics Department), 30 students, with the students below the eighth grade and common people's scholars. .

Also: For all mathematics, "Grandson" and "Five Caos" are limited to one year old; "Nine Chapters" and "Sea Island" are three years old; "Zhang Qiujian" and "Xia Houyang" are one year old each; The Five Classics Suan is one year old, Zhui Shu is four years old, Ji Gu (an arithmetic book in contemporary Tang Dynasty) is three years old, and both Ji Yi and Third Class Numbers are also studied.

At that time, if you chose to study in the Department of Mathematics, you would have to study for at least 14 years! The two books "Sun Tzu's Mathematical Classics" and "Five Cao Mathematical Classics" mainly talk about linear equations, and the content includes linear equations of more than three variables.But since it is a linear equation, addition, subtraction, and subtraction can be solved, so we think it is roughly equivalent to the content of elementary school. "Nine Chapters of Arithmetic" and "Sea Island Mathematical Classics" belong to the second difficulty echelon. Through the examples we have given before, you can also get a general idea of ​​the difficulty, mainly the square root, the cube root, the area of ​​a square, the volume of a cone, Trigonometric calculations, measurement substitutions, and some simple limit applications.The content of these two books basically takes three years to learn.

The book "Ji Gu Suan Jing" needs a special introduction.This is a textbook written by Wang Xiaotong, a national treasure mathematician who is a professor of mathematics in the Tang Dynasty and is equivalent to the academician of the Chinese Academy of Sciences.Therefore, this book should be the core textbook of mathematics in the Tang Dynasty. It needs to be studied carefully, so it needs to be studied for three years.The main content of this book still belongs to the category of elementary mathematics. Wang Xiaotong himself is best at solving multivariate cubic equations.There are a lot of pages in the arithmetic, all of which are about solving cubic equations.

Against the backdrop of such a heavyweight work, we can see a more transcendent existence - "The Art of Embellishment". This book takes four years to study! ! !
The specific content of the book "Zhushu" has now been lost. The reason for the loss is: academic officials can't study its profoundness, so they discarded it and ignored it.In other words, the teachers who teach mathematics can't understand it, so they can only leave it aside in the end.The "student" mentioned here is none other than Wang Xiaotong, a national treasure mathematician of the Tang Dynasty. His evaluation of "Zhushu" is: "Zhushu" written by his ancestor was called exquisite at the time, and he never realized it. The art of carrying out the town is completely wrong. "It's all wrong?" Or did he not understand?From today's point of view, it is likely the latter.

China's science is not always progressing, and there are sometimes 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, I will count these four cliff-like regressions in detail.But in this section, we can first reveal one of them - the mathematical disaster of Tang Dynasty.

Wang Xiaotong, the number one mathematician in the Tang Dynasty, and Li Chunfeng, the number two figure, what is the approximate level of mathematics of these two people?Let’s talk about Li Chunfeng first. He couldn’t understand Liu Hui’s circle-cutting technique, and he criticized the "Nine Chapters on the Mathematical Techniques". His arguments almost destroyed the circle-cutting technique.When it comes to Liu Hui cutting the circle, I also want to talk about Archimedes by the way. After all, Archimedes was earlier.Archimedes also cut the circle, but his predecessors, Archimedes, did not summarize the formula for cutting the circle, nor did he propose an idea similar to the limit, but adopted the basic method of step-by-step comparison.Therefore, the accuracy of the pi estimated by the answer given by Archimedes' circle cutting technique is actually not high.And Liu Hui's idea of ​​cutting circles is more similar to advanced mathematics, but it almost couldn't be passed on in the Tang Dynasty.Li Chunfeng couldn't understand Liu Hui's annotations. Although Wang Xiaotong could understand some, his "Ji Gu Suan Jing" was criticized by people today, although it was called a masterpiece. Except in the field of solving cubic equations, the main content did not exceed " Nine Chapters of Arithmetic", and the selection and arrangement of sample questions are far behind.From these two points, we can see that in the Tang Dynasty in the seventh century AD, the level of mathematics has regressed to the same level as that in the third century AD. Compared with the three generations of the ancestors, Xin Dufang and Zhenluan's period can be regarded as a big step forward Go backwards!
But generally speaking, the elementary algebraic geometry problems have been solved in "Nine Chapters", and the triangulation problem has also been deeply analyzed in "Sea Island".So what other mathematical propositions can make Wang Xiaotong, a hero like Wang Xiaotong, feel completely incomprehensible?Probably only advanced mathematics.In fact, Liu Hui's method of cutting circles and the principle of composition proposed by Zu Dingzhi, the main character in this article, are all preliminary calculus. "Zishu" has obviously taken a step forward on this issue. According to "Mengxi Bi Tan·Xiangshu": most of the calendar revisions in previous lives were just adding to or detracting from the old calendar, and there was no real test of Tiandu.The method is to test the degrees and seconds of every night, dawn, night, half moon and five stars, and record them in a book.After five years, remove the clouds and the number of days seen in the daytime, you can practice it for three years, and then add it with arithmetic, which is the so-called "attachment technique" in ancient times.That is to say, the art of embellishment is a science of calculating astronomical scales based on perennial observations and inverse function fitting.The Zu's Observatory that appeared in Chapter 1 of this work, and Zu's basic description of the embellishment technique are set based on this record.And function modeling and matching is a sophisticated problem in advanced mathematics.The five chapters of "Zhushu" restore the technique from five aspects: differentiation, integration, partial differential elimination of unknowns, differential equation reduction function, and function analysis.

The Guozijian in the early Tang Dynasty tried to promote "Zhushu", but because all mathematics scholars from top to bottom could not understand it, in the end, the students of the Tang Dynasty were lucky enough to get rid of the horror of being dominated by advanced mathematics.

　It's past midnight, sorry.

　　
　
(End of this chapter)