A Man of Science and Engineering in Troubled Times Wandering in the Late Qing Dynasty

Chapter 89
Yuan Shikai was naturally the most generous, and the highest account was 6000 taels.

Seeing that Yuan Shikai gave so much money, Yikuang expressed a little unacceptable, and immediately asked, "What's the meaning of Weiting?"

Yuan Shikai laughed and said, "My lord is in a high position, and I have a lot of things to do every day! I work hard on weekdays. This is my heart, and it is not a respect. From now on, if the lord has any orders or the food and clothing that the family needs, just tell Weiting."

Yikuang is one that takes money as it is given, let alone so much money.Moreover, Yuan Shikai is now an important minister of the court, and there are too many benefits to having a good relationship with him.Now that people come to send money to their door, it is clear that they also want to make a relationship for themselves.

It can't be fishing law enforcement.

Yikuang said: "Weiting has a heart! If the country has more talents like you, how can we be afraid of foreigners anymore."

Yuan Shikai immediately said: "Hey! The prince is the pillar of the country, and I am just doing things for the court."

Yikuang said: "What you are doing is not something that ordinary people can do, please come inside first!"

Yuan Shikai has the highest rank among the officials present today, and the high rank is from the first rank, so he will naturally sit at the top.

6000 taels for Yuan Shikai is not a painful amount. In the future, Yikuang will earn almost tens of millions of taels from Yuan Shikai alone, and he will definitely be a big benefactor of Yikuang.

Yikuang also really reciprocated Yuan Shikai. Later, the Qing court tried to kill Yuan Shikai many times, but Yikuang recommended them all.

In fact, this shows that Yuan Shikai's money has been spent.

Not long before the fall of the Qing Dynasty, Yuan Shikai even offered the biggest bribe, as high as 300 million taels!

Our Lord Qing really dares to accept it!

I don't know if he knows that he sold Daqing directly, anyway, he is desperate for the reputation of "the nemesis of Qing Dynasty"!

——He dared to take money from revolutionaries, why couldn't he take money from Yuan Shikai?

Even Liang Qichao later had a crooked idea in order to establish a constitution as soon as possible: he wanted to bribe [-] censors at the same time, and jointly submitted a booklet to request the rapid establishment of a constitution.

After learning about it, Yikuang said happily: Yes, 3000 taels for a censor!

what?
Who can believe it?
It can only be said that here in Yikuang, all living beings are equal before money, and you can do things when you give money, regardless of whether you are an enemy or not, all children are innocent!

Today Yikuang received a lot of money, but when Zhang Baixi and Ding Weiliang presented gifts, Yikuang's eyes were dumbfounded.

Zhang Baixi held a fan and said: "Your Majesty, this fan is made of unusual bamboo and wood. It is made of Western refined steel, which means that the imperial court is stable, like gold and stone! And the four characters on the fan are handwritten by the officials themselves. The prince has a strong body, and his steps are like the wind. It is the prince who is healthy, and the court will be healthier!"

This set of high-sounding words made Yiqiang feel embarrassed, and smiled awkwardly, "Master Zhang is worthy of being the Minister of Management, and his intentions are really high! Too high!"

Martin was an American, so he didn't have so many twists and turns. He didn't really want to participate in this traditional Chinese birthday banquet, so he left after congratulating Yikuang.

Li Yu's rank was too low, so he didn't have to meet Yikuang in person, but Zai Zhen saw him.

"Mr. Li! Thank you for writing the science chapter for my "Yingshao Diary" recently. I was deeply touched after reading it. The writing is really good."

Li Yu said casually, "It's a little effort."

I thought to myself, it's not for Tang Wenzhi's face.

Zai Zhen said again: "I also heard that your high school is No.1 in the Peking University Hall. I don't know how it is in the University Hall?"

"I don't know either. School hasn't started yet. Is Master Bei also interested?"

It's also true that school didn't start.

Zai Zhen said: "Ama asked me to study in the future. After all, even Mr. Li went to the university, and I will definitely learn a lot of Western knowledge."

Li Yu said in surprise, "You want to go to school too? The exam is over, right?"

Zai Zhen said casually: "There's nothing wrong with going to study, it's all for the imperial court. Besides, if you really want to take an exam, let them add it."

Zai Zhen is really casual, and even a little bit regards the University Hall as the former Imperial College.

But he is from the royal family, if he really wants to go in, Zhang Baixi probably won't be able to stop him. ——There is no need to stop, after all, this kind of person can't really study patiently, even if he does, he will leave in a short time.

There were a lot of officials visiting today, Zai Zhen chatted with Li Yu for a few words, and then immediately greeted other court officials.

Li Yu continued to wander a few steps, and when he arrived near the stage, he saw Yang Xiaolou who was painting his face.

"Mr. Yang." Li Yu called out.

"Hey~~" Yang Xiaolou came out with a playful voice, "It's Brother Li! We always wanted to thank you, but you haven't been in the capital recently."

Li Yu asked, "What can I thank you for?"

Yang Xiaolou said: "Thanks to the foreign box you used, the queen mother liked it very much. She has let our troupe perform in the palace many times. Now the Tongqing troupe has completely opened up the stage in the capital!"

"It all depends on your skills, otherwise the best phonograph is useless." Li Yu said.

"Thank you too! How could we be here without you! My father-in-law told me that in the future, I should hold back my temper and learn more from foreigners. This is also for the development of our Peking Opera."

"If Beijing opera can be promoted, Mr. Yang's credit is for this." Li Yu gave a thumbs up.

Yang Xiaolou said: "I'm still far behind. But this time I really want to thank you very much. My foster father said that in the future, as long as Brother Li has a word, our Tongqing class can perform for you for free. You can choose the time and place. , You can also bring along whatever you like, I’m sure I’ll raise the stage for you!”

What Yang Xiaolou said is a performance that lasts a whole day.

Li Yu cupped his hands and said, "I won't refuse, but I definitely won't let you perform for nothing."

"Brother Li, you're welcome, that's all our troupe can do. By the way, do you have any favorite repertoire? But it's okay, we will try our best to rehearse."

Li Yu was really caught by the question. He knew very little about Peking opera, and the only thing he knew was the frequently heard opera lines such as "the blue-faced Dalton steals the imperial horse", or Guo Degang's "called Xiaofan" .

So Li Yu replied: "You are professionals, you can play the repertoire according to your own needs."

Yang Xiaolou said: "Okay, then we will be able to master our special skills!"

Li Yu thanked, "It's very good."

Someone in the troupe was calling for Yang Xiaolou, so he said to Li Yu: "Don't tell Brother Li for now, we need to prepare for the backstage, and I will definitely find you for a few drinks in the future."

Li Yu said: "Okay, I look forward to your wonderful performance later."

In fact, Li Yu didn't really want to have a birthday banquet here. They were all court officials. He didn't know a few of them, and he couldn't talk to them. When he was aimless, he ran into Yu Geng and Yu Xunling and his son.

Yu Geng came over and said, "When did Mr. Li return to Beijing?"

Li Yu said, "It's Minister Yu! I haven't been back long, and I've been busy with the university exams."

Yu Xunling said: "I heard that you are the first in high school, congratulations!"

"Thank you!" Li Yu cupped his hands.

Yu Xunling said again: "The two sisters heard about you, and they are also very happy for you."

"That's right, why don't you see De Ling and Rong Ling?" Li Yu asked.

"They have now been recruited into the palace by the Queen Mother and have become imperial maids." Yu Xunling said.

"It's so fast," Li Yu said in surprise, "Having lived abroad for so many years, have you come back to adapt?"

Yu Xunling said: "There should be nothing wrong with it, and the Queen Mother wants to learn Western social etiquette as soon as possible."

Li Yu asked, "Western etiquette?"

"Yes, the queen mother wants to learn the way of Westerners, and invite the wives of ministers to hold parties in the future."

Li Yu smiled, most likely it was also advocated by the sisters of the Yu family who lived overseas.

But thinking about the oppressive living environment in the palace, even Si Gege, who had been growing up in the palace, couldn't bear it, let alone the two lively and active teenage girls, I was a little worried for them.

But since it was recommended by Yikuang and hand-picked by Cixi, the Yu family didn't dare to say anything, and could only obediently obey the oracle.Moreover, Cixi is the supreme ruler of the Qing Dynasty after all, and having two daughters by Cixi's side is good for Yu Geng and the Yu family.

Women in this era are often just a tool identity.

At the banquet, Li Yu and Yu's family sat together. Li Yu didn't want to drink today. He had to study his own problems in the afternoon, so he needed to keep his head clear.

But Yikuang's birthday banquet was really time-consuming, with various performances, it didn't end until around four o'clock in the afternoon.

Li Yu hurried to the Imperial University Hall while it was still dark. He had a pass given by Ding Weiliang and went directly to the library.

The library building of Jingshi University Hall is the earliest modern university library in China. It was originally the dressing building of Princess Hejia's mansion. It has only two floors, and it is far less magnificent than the later Peking University library.

The current Peking University Library has a collection of less than 8 volumes, while the later Peking University Library has a collection of up to 800 million volumes!If you count the digital books, there are 1100 million volumes!

The first collection of books in the library was moved from the Tongwen Library, and books recently purchased from abroad were added.Of course, famous educators such as Zhang Baixi and Wu Rulun also donated many precious rare books and classics one after another.

At the beginning, I worked as an administrator in the library building of Tongwen Library, and now the layout of the library of Jingshi University Hall completely refers to the style of Tongwen Library, so Li Yu quickly found Poincaré's works in the mathematics series.

He immediately took it down and read it.

Although Li Yu is not a mathematics major, physics requires a lot of mathematics, so his mathematics skills are not bad.

Li Yu turned to Poincaré's book on "New Methods of Mathematics", and he didn't have time to read it carefully. After glancing at the catalog, he turned to the part corresponding to the qualitative theory of invariant integrals and differential equations.

These things are commonly used mathematical tools in physics. After reading it, Li Yu turned to the publication date of the book: August 1888.

Instantly understood!
As we all know, Poincaré is a brilliant mathematician. When he was studying the three-body problem, or strictly speaking, the N-body problem, his main achievement was to propose a set of subsequent mathematical methods. This is his important contribution.

One of the most critical is the qualitative theory of invariant integrals and differential equations.

They were all mathematical tools that did not appear at that time, but Poincaré was a mathematical genius. Since there were no mathematical tools, he created them himself!
He forcibly created a set of mathematical methods for studying astrophysics, just like Galois created group theory for studying quintic equations.

The status of group theory in mathematics goes without saying, but the reason is only to solve the problem of finding the root of the quintic equation.

Of course, it is not to say that the problem of finding the root of the quintic equation is not important. The key is that group theory is too dazzling.In other words, the problem of finding the root of the quintic equation is the cause, and group theory is the result of it.

I don't know why, ten years ago, King Oscar II of Sweden and Norway did not issue a call for papers on the three-body problem, but Poincaré still created this set of mathematical tools.

It can only be said that mathematics is indeed far ahead of other subjects.

After all, mathematics is mathematics, it is too pure, and mathematicians seldom use their brains for a certain practical problem, because it is too simple and meaningless for them, and they don't want to waste time...

Now that there are Poincaré mathematical tools, it is actually relatively simple to solve the three-body problem, and it has really become a relatively common mathematical problem.

It's just that not many people understood Poincaré's article at that time.

Li Yu's mood calmed down a little, it seemed that it was just a small episode.

He took out the "Times" and looked at the question of the reward again:

"In a system with any number of celestial bodies, the mutual force satisfies Newton's law. In the case that any two celestial bodies do not collide, try to give the coordinates of each celestial body. This coordinate can be expressed as a known function of time. As a series representation of variables, and for all values, the series is uniformly convergent.

In addition, a specific time function analysis is given for the past Sun-Earth-Moon system. "

This problem is a little bit simplified than Poincaré's problem at that time, and at the end there is more model analysis of the solar system we are most concerned about.

The sun-earth-moon itself is a simple three-body system.

Speaking of which, human beings have been studying the similarly simplified three-body for a long time.

In the beginning, it started from the study of the moon.

It's all the moon's fault!
200 years ago, the great god Newton created the law of universal gravitation early, but looking at the formula, we can know that the research is all about the movement between two celestial bodies.

Using calculus and the law of universal gravitation to solve the trajectory of two celestial bodies should not be too simple!But when Newton added the moon, the problem became extremely complicated in an instant.

——This is the earliest research on the three-body problem.

Newton once said: "Unless I study the moon, my head never hurts."

It can be understood as the arrogance of the great god, but it does reflect the helplessness of the great god.

The reason why Newton studied the moon also has a background.According to Kepler's law, the trajectory of a planet is an ellipse, so there are perihelion and aphelion. At that time, the elliptical orbits of the major planets have been calculated.

The orbit of the moon is naturally an ellipse, and there are also perigee and apogee.

According to Newton's calculations, the perigee, that is, the supermoon, will appear every 17.8 years or so.

However, this result is outrageous, because according to actual observations, people discovered that the super moon appeared once every 2000 years or so 9 years ago.

The difference between the calculation result and the actual situation is doubled, which is obviously far from the big spectrum.

God Newton could not solve this problem, so he had to shelve it.

But shelving is definitely not the answer, because navigation is very important for position determination.

At that time, it was easy to determine latitude at sea, relying on the Polaris and the sun.

But the measurement of longitude needs to know the time accurately, and then calculate it by using the change of the moon's track, which is the so-called lunar distance method.

So the trouble caused by the moon still needs to be solved!

After Newton, the great gods Euler and Lagrange appeared.

It is unusual for the big master to make a move. The two successfully solved the restrictive three-body problem. The so-called restrictiveness means that one celestial body has a relatively small mass and has no effect on the other two big brothers.

The two great gods gave five special solutions to the restrictive three-body problem, solving the simplified sun, earth and moon system.

By the way, the pinnacle of the restricted three-body problem was the discovery of Neptune.

(End of this chapter)