Hilbert walked so fast that he had disappeared at the door before Lin Yuan and Zhang Yuanyi could react, and Lin Yuan asked in surprise, "What's going on?" Didn't you say that this Riemann conjecture would definitely be able to conquer him? ”

Zhang Yuanyi was also puzzled, and said: "Yes, according to the history I have read, Hilbert has done a lot of research work on the Riemann conjecture, and what I wrote is the recent proof of the Riemann conjecture, he will definitely be interested, but why did he leave!" Could it be that there is something wrong with the history books? ”

Lin Yuan took the piece of paper full of formulas written by Zhang Yuanyi, and suddenly said, "I understand what's going on!" ”

Zhang Yuanyi hurriedly asked, "What the hell is going on?" Is there something wrong with what I'm writing? ”

Lin Yuan said: "Symbols, the key is symbols!" The mathematical symbols of this era must have changed compared to our time, and he must not understand what you write with the current symbols, so he thought we were playing tricks on him, so he left. ”

Zhang Yuanyi said: "But then there is no need for him to go!" If there's anything I don't understand, wouldn't it be nice to ask me? ”

Lin Yuan smiled and said, "Mathematician, many times like a child, do you know a very famous mathematician named Hardy?" ”

Zhang Yuanyi said: "Those who have studied the Riemann conjecture must have heard of Hardy, but in 1896 he was only 19 years old, and he was still studying at Trinity College, Cambridge University, and he contributed his life to the Riemann conjecture and achieved many great achievements. ”

Lin Yuan said: "Well, it's this Hardy, he is an honest and upright person, but once he sent a letter to a good friend of his, which said: I have proved the Riemann conjecture, but the fact is that he has not proved it at all, tell me what is going on?" ”

Zhang Yuanyi shook his head, and Lin Yuan smiled: "Here's the thing, it turns out that Hardy wants to return to England and needs to cross the rough North Sea by boat, and he is very scared, so he mailed out such a letter, and his reason is this: if the ship capsizes and he dies, the world will think that he has proved the Riemann conjecture, so that he will receive great honor, but God hates him very much, because he has never believed in the existence of God, so God will not let him get such honor, so he will not let his ship have an accident." ”

Lin Yuan laughed after speaking, but he didn't expect Zhang Yuanyi to pat his thigh one by one and said, "Hardy is worthy of being a great mathematician, this trick is really too ingenious!" In the past, I would be scared every time I went out to fly, but now I'll use this trick and never have to be scared again. ”

Lin Yuan thought helplessly: "It seems that the realm of genius is really not something that ordinary people can understand. Lin Yuan continued: "In this way, I asked the Beijing ship to send the paper that Riemann put forward the conjecture, you must have read it, right?" You learn the symbols in it, and then you rewrite what you wrote and send it to Hilbert. ”

Zhang Yuanyi said: "I memorized all the papers, but I read the modern version, and the symbols have been changed. Lin Yuan then handed the paper to Zhang Yuanyi, and then returned to his room.

Early the next morning, Lin Yuan came to find Zhang Yuanyi, and when he came to the door, he was about to push the door in, when he saw a note posted on the door, which read: "If you are not Lin Yuan, please ignore this note, turn around and leave, I am sleeping, and those who wake me up will bear the consequences; If you are Lin Yuan, please gently push open the door, there is a revised content on the table, and you can send it directly, in addition: I won't go to the expo. ”

Lin Yuan smiled helplessly, went in and took out the manuscript he wrote, handed it to an entourage to send to Hilbert, and then went to Shen Wanqing, knocked on the door twice, Shen Wanqing opened the door, and said to Lin Yuan: "I know what you are going to do when you come to find me, whether you are going to the Technique Expo to get information, I have been ready for a long time." ”

Shen Wanqing said and walked outside with Lin Yuan, saying as she walked, "Do you think we will see naval techniques at the fair?" Don't they know how to keep secrets? ”

Lin Yuan said with a smile: "Military skills and tricks, you can't steal anything if you show you the appearance in front of you, and this William II is extremely good-looking, maybe he will come up with some good things." ”

Shen Wanqing said: "But there are a lot of advanced techniques that will be used on warships, what do we want to see?" ”

Lin Yuan said: "Although there are many techniques applied on warships, they must be divided into points according to the general direction, and they can be counted on one hand, power, weapons, fire control, protection, and communications, which are these five general directions, and when we have mastered their skills almost, we will be able to design warships in a targeted manner." ”

There were still many people in the mission who also wanted to go to the exposition, so Germany sent a dozen cars, and the group came to the venue of the exposition - Berlin Museum Island, which is a world-famous museum mecca, and there are several famous museums in it, and the exposition was not held in the museum, but the exhibition location was chosen outside, and it is not yet open to the public, so there are almost no tourists inside.

Lin Yuan saw the booths one after another inside and completely understood, the Germans just wanted to give us prestige, tell us that they Germany is very strong, China had better be honest and obedient, and the accompanying German official then said: "Our Emperor His Majesty has something to do now, I can't accompany you to visit, you can see for yourself first, the military technology exhibition part is in the innermost, and you can find me at any time if you have anything." ”

Lin Yuan nodded, and gave an order to everyone, let everyone find what they like to see, most people are not interested in military techniques, so only Lin Yuan took Shen Wanqing to the innermost, just took two steps, only to hear Xu Jingcheng's words behind him: "Lord Lin, I still say that, we can't build a battleship in the Qing Dynasty, I'll take you to see the Germans' skills and you will understand." ”

Lin Yuan didn't refute him, but smiled lightly, and the three of them walked near a booth, Xu Jingcheng pointed to the things on the table and said, "Look at that small ball with a frame, how exquisitely it is done!" We can't make such a thing in the Qing Dynasty, but we don't know what this thing is for? ”

Lin Yuan glanced at it and said, "That's just a gyroscope, or I'll ......give it to them" Lin Yuan felt a pain in his hand when he said this, and found that it was Shen Wanqing pinching himself, and then he remembered that he had disguised himself when he demonstrated it to the Europeans, if it wasn't for Shen Wanqing's reminder, he would have missed it.

Xu Jingcheng asked again: "What is a gyroscope?" ”

The person behind the booth heard Xu Jingcheng's words and hurriedly said: "Hello Chinese friends, we are the service staff of Pulan Company, let me introduce you to this amazing machine." ”

Lin Yuan was also surprised when he heard that the Puran company, because this company is so unusual, in history this company has no reputation, like Krupp Company, Armstrong Company are household names, although there is no fame, but this company's products have completely rewritten the history of naval warfare!