Seven days have passed and Xu Kai has visited most of the colleges in Tianxiang. But he still hasn't made up his mind.
Huang Tu has decided to go to the Confucian Department and now goes there every day, but occasionally he will go to the famous department to take two classes.
Like universities in previous lives, Tianxiang’s atmosphere is extremely liberal and open. Even if you have chosen a department, it does not mean that you cannot take classes in other departments. As long as you can complete the homework in this department.
As for Yun Qingshan, she chose the Mo family. She seems to be very interested in the Mo family's organ skills.
Xu Kai told her that the Mo family needed to hand over their earnings, but Yun Qingshan looked unconcerned.
"Your family has so many assets, and you can make a lot of money with money. Are you so willing to give it all to the Mo family?" Xu Kai was very confused. Yun Qingshan was not greedy for money, but he gave such a large sum of money to the Mo family. Is she really willing to let it go?
Yun Qingshan said with a smile: "My assets are not in my name, what do they have to do with me, Yun Qingshan?"
Xu Kai was silent for a while and said: "I think you are more suitable for Legalism than Mohism."
"Ah, that's right." As if he remembered something, Yun Qingshan was rummaging around for something. "I heard that you also came to Tianxiang, so I brought the dividends from the glass with me."
"I also opened an account for you at Dixing Bank. From now on, the dividends will go directly into your name. You can use them directly when you leave Tianxiang."
Dixing Bank is a semi-official bank of the Central Empire and has a very high reputation. There will be no problem in depositing money there.
As Yun Qingshan talked, he rummaged through and found a stack of silver notes and a jade plaque. The jade plaque was the deposit certificate of Dixing Bank.
Xu Kaidi took the banknote and asked, "How many are there?"
Yun Qingshan did the math and replied: "You now have one million taels of silver in your hand. Although someone seems to have discovered that we can produce top-quality colored glaze on a large scale, which has caused the price on the market to drop, in the future you should still I can get a monthly dividend of 100,000 taels of silver. If the market expands in the future, it can continue to rise."
Xu Kai has never seen so much money in his life.
Therefore, when he took the banknote, his hands were shaking a little and he almost let the banknote slip from his hand.
Xu Kai said seriously: "Thank you."
Yun Qingshan said with a smile: "This is the content of our agreement. Is there anything worthy of gratitude?"
"I offered to give me 30% profit in exchange for a certain degree of pricing power. You gave me pricing power, but you did not take away the 30% profit. So I am very grateful."
Yun Qingshan put his hands on Xu Kai's shoulders and said with a smile: "You are my fiancé, why should we separate?"
Xu Kai suddenly felt as if his sight could penetrate the black cloth that blocked Yun Qingshan's eyes, and saw her eyes——
"Forgive me for refusing. I'll take my leave now."
Xu Kaifei also ran away.
Yun Qingshan's smile seemed to remain unchanged forever, and he watched Xu Kai's leaving figure with a smile.
…
…
Day eight.
Xu Kai, who was about to go to the Confucian Department, was stopped by a group of people.
"What are you doing?" Xu Kai looked at the four people surrounding him warily and protected his wallet.
The leader, Qin Jiushao, looked at Xu Kai with a smile and thought that he was indeed extraordinary. He was worthy of being a genius who wrote such a wonderful arithmetic book as "Elements of Geometry".
They understood the axiomatic method of "Elements of Geometry" and gained great insights. If it weren't for the fact that although their achievements were higher, their accumulation was not as good as Zhang Cang's, they would have become semi-saints.
However, despite this, they are also confident that they will become saints within ten years. By then, the number of five half-saints in the numerology school will become second only to those with sub-sages in Tianxiang.
Qin Jiushao said: "Xu Kai, you wrote such wonderful books as "Elements of Geometry", which inspired us a lot. I wonder if you can answer some of our questions?"
Xu Kaixin thought that it was probably the numerologist who came, and felt a little more at ease, so he replied: "Ask."
"The method of strict logical reasoning based on a few axioms in your book is a new world for mathematicians like us. We think that since you are the author of this book, the name for this method is appropriate. It's up to you to do it. Can you come up with a name for this method?"
Xu Kaixin thought it was worth asking himself this kind of question? But he replied: "I call it the axiomatic method."
The four of them nodded, and Qin Jiushao then asked the question that troubled him even more: "Why did you refuse Zhang Sheng's offer to be a disciple?"
Xu Kai was even more confused. Aren't you here to ask questions about "Elements of Geometry"? Why are you asking such questions?
"I did not refuse. If you have visited Lord Zhang Sheng, you will know that I just asked him a question, and he also said that you cannot be called a teacher unless you solve the students' doubts."
The four of them looked at each other. They had been trying to solve this problem together in Zhang Sheng's courtyard for the past few days, but they had no clue.
Until Li Ye proposed that this method proposition may be wrong, then we only need to find counter-evidence.
So several people spent three days calculating a number that was enough to make Xu stunned, but they couldn't find a wrong answer.
With the computing power of Half-Saint Zhang Cang and the four of them, the calculation has finally reached its limit.
So the five finally collapsed.
Li Ye suggested that perhaps Xu Kai had some ideas and that he should not be ashamed to ask his subordinates when doing academic work. It would be no harm for us to ask him.
So the four of them came here.
However, as great sages, they still found it difficult to ask Xu Kaiqiu, who was currently only a scholar and had not officially passed the imperial examination, so they asked some of the above questions first.
At this point, they could finally speak. Zhu Shijie asked Xu Kai whether he had any ideas on this issue.
Xu Kai frowned. He certainly had an idea on how to solve Goldbach's conjecture. To be precise, it was the mathematicians of the previous life who had the ideas.
All four paths can solve Goldbach's conjecture, especially the path of almost prime numbers, which is only one step away. The person who took this penultimate step was Mr. Chen Jingrun.
The problem is that these four paths all involve advanced mathematics. How can he explain these four paths to mathematicians who are still at the stage of elementary mathematics?
So Xu Kai directly said that he had no idea.
It’s better to wait until you develop advanced mathematics. But that is only after establishing the classical physical space-time view.
The four of them nodded. This answer was not unexpected. After all, Xu Kai was just a scholar. How could he solve a problem that they couldn't solve?
Qin Jiushao asked the last question, which was another important thing for them to come here: "Xu Kai, since you haven't decided which department to join, how about joining our math department?"
Xu Kai was shocked, but he still said calmly: "Tianxiang gave me a month, and it's not even half over yet. I don't think there's a need to worry."
"You do have a month, but Tianxiang students rarely spend that long deciding their own path. Those who can enter Tianxiang are all talented people with decisive determination and broad knowledge. Let yourself decide the path quickly. If you take too long, it will affect Tianxiang's evaluation of you, thinking that you are indecisive and weak; the teacher will not think highly of you, which will affect your studies. "
Xu Kaixin wondered if Tianxiang’s teacher could still teach him theoretical physics? So his expression didn't change much.
Seeing that Xu Kai's expression remained unchanged, Qin Jiushao finally used the trump card that Zhang Sheng told them and heard from the Dali Sage: "If Tianxiang's evaluation of you decreases, the resources you have will also decrease."
Xu Kai's body was shocked: "Does this mean the money will become less?"
"yes."
"I will make a decision as soon as possible." Xu Kai's face was solemn, his eyes were sharp, and he made a firm determination at a glance.
The four of them frowned unhappily. They believed that learning should not pay too much attention to these external things, but Xu Kai looked like he was after money. They didn't know why Dali Sage and Zhang Sheng had such high regard for him. evaluate.
"Then have you decided?"
"I will make a decision within three days."
Qin Jiushao asked: "You don't want to join our mathematicians. Do you think that you have rejected Zhang Sheng's apprenticeship, but now you join the number of mathematicians he is about to establish, will there be some adverse effects?"
Xu Kai was silent, then nodded.
Qin Jiushao laughed and said: "You don't have to worry so much. Mr. Zhang Sheng used to be the prime minister of the Central Empire. The so-called prime minister is very good at supporting boats. Now he has become a semi-sage. He will not reject him because of you." It’s hard for you to accept someone as a disciple. What’s more, you didn’t completely reject him, right?”
"So, Mr. Zhang Sheng won't give me small shoes?"
Qin Jiushao said displeasedly: "What kind of existence is Master Zhang Sheng that he deserves to wear small shoes for you?"
"Okay, then I will join the numerologists!"
…
…
"...So why do I still need to read these scriptures even after I've joined the Mathematical Society?" Xu Kai lay weakly on the table, drowsy.
"The imperial examination is the right path." A senior brother sitting in front of him said solemnly.
Xu Kai didn't expect that the other party could even hear his whispers, but his sleep was indeed not very good these past few days because he had fallen asleep in the math family class.
On the first day I joined the Department of Mathematics, I read "The Analects of Confucius".
On the second day after joining the Department of Mathematics, I read "Spring and Autumn".
On the third day after joining the Department of Mathematics, I read "Han Feizi".
…
On the tenth day after joining the Department of Mathematics, I read "The Analects of Confucius".
"I can't stand it anymore, so I punched the Analects to pieces." Xu Kai stood up with a slap on the table, forcibly cheered up, picked up his manuscript and walked towards the book pavilion.
"What are you going to do?" The senior brother was a little curious.
"Go to the library."
"Go and read the Classics of All Saints? Your foundation is indeed weak. You should read more books." The senior brother nodded, obviously approving of Xu Kai's attitude.
After all, he who was sitting in front couldn't see Xu Kai sleeping in the back.
"If I go to the bookstore to read classics, what's the difference between that and sleeping somewhere else? It's better to go back and sleep." Xu Kai said calmly.
Reading the Classics of All Saints these past few days has made Xu Kaikui grow up. He can't even read high school-level political books. How can he understand those things?
The imperial examination in Tianyan Continent is different from the previous life. In the previous life, only Confucianism was tested, while the imperial examination in Tianyan Continent covers all schools of thought.
The correction is that as long as one has produced a semi-saint, everything is covered.
Before Zhang Cang, there had never been any semi-sage numerologists, and there was no content about numerologists in the imperial examination. Therefore, most of the courses taken by mathematicians before entering the imperial examination were related to the imperial examination. Only after passing the Jinshi exam will a large number of math classes be arranged.
Xu Kai came to the book pavilion, went straight to the second floor, and started writing on the spot without picking up a book.
Some books in Tianxiang are very precious and are not allowed to be taken out of the library, so naturally there are some desks for students to study.
He also saw Huang Tu and Yun Qingshan who were studying here.
"You actually came to the bookstore?!"
Huang Tu was very surprised to see Xu Kai coming to the book pavilion, and asked in a lowered voice.
"Why can't you think about it?"
Xu Kai glanced at it and said, "Isn't it the time for the Confucian department to attend class now? What are you doing here?"
"This class is mainly aimed at students who are Jinshi and enter the holy way or choose to become officials and follow the path of success. It has little to do with me." Huang Tu explained, "In this case, it is better to come to the bookstore to study classics. So that you don’t have to watch other students talk during lectures.”
Xu Kai nodded and turned to Yun Qingshan: "What about you?"
"I don't want to go."
"...It's very much like something you can do."
"What about you? You just asked us and didn't tell us why you came to the bookstore?" Yun Qingshan chuckled.
Xu Kaiyang talked about his manuscript: "If I can't continue reading the classics, I might as well do my own thing."
He was referring to the recently written "Geometry", the founder of which was Descartes. The great thing about this work is that it combines algebra and geometry, thus transforming geometric problems into algebraic problems. The publication of "Geometry" marked the founding of analytic geometry, and also marked the transition of mathematics from constant mathematics to the era of variable mathematics. It is a crucial work in the history of mathematics.
After all, the custom-made experimental props have not yet arrived, and he wants to wait until those props are completed to measure some crucial constants to determine whether a series of theories such as the theory of relativity can also be applied in this world.
Huang Tu picked up a manuscript and read it. The more he looked at it, the deeper his frown deepened: "What are these ghostly drawings of yours?"
"You have to hold this thing to understand it." Xu Kai took out a piece of the complicated manuscript and handed it to Huang Tu.
This is the Arabic numerals, English letters and instructions that Xu Kai proposed to save trouble.
Thanks to these things, "Geometry" was written smoothly, and all kinds of unnecessary words when writing "Elements" were gone.
"So you don't read anymore?"
"What book are you reading?"
"How can you take the government exam if you don't read?"
"Who said I have to take part?" Xu Kai raised his eyebrows, "And isn't the next government examination still a year away?"
"Tianxiang specially prepared a government examination for the two of us who didn't even pass the exam. Don't you know?" Huang Tu asked doubtfully.
"...When? Where did you know?"
"It will be held in a month. Oh, that's right. Mr. Wang should have informed you about this, but he has too many classes today, so he probably hasn't had time to tell you yet. Maybe he will come to you after class is over. ”
"...Is it too late to review now?"
