Is this also a problem? If there is a balloon in the house that is forever inflated, it will definitely fill the whole room, which is something that anyone can understand, but in the eyes of mathematicians, "trying to understand" is not "proof", in order to prove, it must go through rigorous reasoning and argumentation.

Ling Xue suddenly thought of a book called "Topology", which is to study all kinds of plane graphics and spatial graphics, and Lin Fei's problem seems to be in the category of topology.

How could Ling Xue know that the question raised by Lin Fei was the extremely famous Poincaré conjecture of Lin Fei's era.

In the year 2000 of Lin Fei's era, a famous mathematical institute in the United States proposed seven mathematical problems, called "the world's seven major mathematical problems", no matter who solves one, as long as they solve one, they can get a prize of one million US dollars, and the Poincaré conjecture is one of them.

The Poincaré conjecture was proposed by the famous mathematician Poincaré at the beginning of the twentieth century, and has since puzzled mathematicians all over the world for more than a hundred years, until 2003 AD, when it was completely solved.

Lin Fei took out the Poincaré conjecture in this era and threw it to Peterlock to solve, how could Peterlock solve it?

Half an hour had passed in the blink of an eye, and Peter Rock had not yet unraveled it, Lin Fei smiled from the side: "Professor Peter Lock, do you want to take this problem back and study it well?" ”

Without even thinking about it, Peter Rock said, "Okay, I'll take this problem back and solve it, give me a day, and I'll be able to solve it." ”

Lin Fei spread his hands and said with a smile: "Mr. Peterlock, if you can't figure it out, you can obediently admit that we Huaxia people are not stupider than you Caucasians, and we can go to your university to study." ”

Peter Rock sneered, "Don't talk so hard about it, I'll come back tomorrow to answer this question for you." Peter Rock didn't say goodbye after speaking, got up and left, Lin Fei looked at Peter Lock's back and sneered, Solving the Poincaré conjecture is the result of the efforts of countless mathematicians for more than a hundred years, you want to solve it in one day, dream!

In the next day, Peter Rock visited Lin Fei again, this time Peter Lock, there was no arrogance on his body, his eyes were dark, his face was bloodless, and his eyes were bloodshot.

Peter Rock sat in front of Lin Fei and put the paper on the table dejectedly, "After I went back yesterday, I didn't eat or sleep for a day, and I was thinking about this problem even when I went to the toilet, I'm sorry, I can't prove this problem, and I can't falsify it......"

Peter Lock's expression was extremely lonely, originally in his heart, the Huaxia people were stupid pigs, creatures that were only a little smarter than the, and now a sow's question, he couldn't answer it, how big this blow was, but you can imagine Lin Fei smiled: "Now you admit that we Huaxia people are not stupid, right?" ”

Peter Lockne nodded, and Lin Fei then asked, "Then our students can go to the United States to study at a university, right?" ”

Peter Rock sighed, "Yes, but your students have to pass the guò entrance exam and pay a high tuition fee......"

"Tuition is not a problem, what I have is money, about the entrance exam, I hope you will set up the test center in Huaxia, lest my people go all the way to the United States, and if they can't pass the exam, they have to come back."

"Yes, there is no problem at all, I will send a telegram to China, and I will also notify my colleagues from other universities." At this time, the United States had already laid a submarine cable from China to the United States.

"Very well, when you inform your other colleagues, I want you to point out one thing, and that is that as long as those schools are willing to admit Chinese students, I can give them large grants." In universities in Europe and the United States, social donations are an important source of school funding, and no president will not be thrilled in the face of huge donations.

Peter Rock agreed, said goodbye and left, Lin Fei doesn't have to worry about the rest of the things, the entrance exam in this era is quite simple, the talents selected by Lin Fei are either from the National Design Institute or from the universities of Huaxia, and these exams are effortless, as for English, the professors of various universities have taught in English before, and they also know a lot about English.

That night, Ling Xue hesitated and said to Lin Fei: "Brother, I also want to go to the United States to study at university......

Lin Fei was stunned for a moment and asked, "Why do you have this idea?" ”

Ling Xue said hesitantly, "People...... There is nothing special about people, you see that Yun'er has read so many books, and Ning Shuang is so good, even if Meixiang has a problem with her head, she still understands economic things...... I alone will not ...... anything."

Lin Fei thought to himself, Xue'er's talent is very good, and it is indeed a waste of talent not to let her go to further study, but if she goes to the United States, she will see her again in a year, Lin Fei set the semester for international students as one year, and let them learn the knowledge that American students have learned in four years in one year, in fact, this is not impossible, there are few university courses in this era, and students spend a lot of time working outside for internships, Lin Fei's international students don't have to do these things.

Lin Fei thought that he would not be able to see Ling Xue for a year, he was really a little reluctant, Ling Xue begged noly: "I know what my brother is worried about, my brother is worried about me and other men...... Brother, don't worry, if Xue'er dares to think like that......"

"Needless to say." Lin Fei gently covered Ling Xue's mouth, in fact, Lin Fei really didn't worry about this, at this time in the United States, the relationship between men and women was still very conservative, as open as in Lin Fei's era, until after the sixties of the twentieth century, many American universities at this time, male and female students were separated, there were special women's colleges, and some universities did not even allow female students to enroll.

Lin Fei said with a smile: "I agree with you to study abroad, it's just that your identity is special, I need to arrange someone to protect you, who is it better to find, the people from the Blood Phoenix Special Forces can't do it, they don't have much culture, by the way, Li Ying, she once went to Europe to study, so I'll let her follow you and protect you." ”

Ling Xue was happy and sad at the same time, and the matter was determined in this way, and in the following period of time, many Chinese students passed the exams of American universities and entered American universities, and American public opinion at that time even exclaimed: "American universities are occupied by Chinese students!" ”

Although the United States in this era had a Chinese Exclusion Act, the U.S. government only implemented it for the Chinese in the Qing Dynasty, and for the Chinese in China, the Chinese Exclusion Act was useless, which was entirely because the Chinese Empire led by Lin Fei was strong, and in this world, only if it was strong could it win the respect of others!

Ling Xue also went to the United States with Li Ying, and the night before leaving, Lin Fei was almost squeezed dry by Ling Xue, and both of them knew that the next time they did this, it would be a year later.

When the two of them were exhausted, Lin Fei instructed Ling Xue: "After arriving in the United States, I will have the opportunity to go to San Francisco, find a Chinese named Feng Ru, and find a way to get him to our Huaxia." ”

Ling Xue asked in surprise, "Who is Feng Ru?" ”

Lin Fei smiled but didn't answer, it turned out that this Feng Ru was a pioneer in the manufacture of aircraft in Chinese history, and he was a talent, of course Lin Fei would not let it go.

The first batch of 3,000 international students went to American universities, but the talent shortage crisis in front of Lin Fei has not been solved, after all, these people will not be able to come back until a year later.

Lin Fei then continued to search for talents around the world, in terms of searching for talents, Lin Fei's advantages were once again reflected, many of the famous big scientists in the Lin Fei era, this era is still unknown little people, such as the Curie couple, such as Einstein, Lin Fei can throw a lot of money at them, get them to China, these little people live unsatisfactory in their own country, and they can't resist the temptation of money.

On the one hand, Lin Fei instructed Yu Xier in Berlin, Germany, to hire university professors, technicians, and scientists from Germany and Russia at high salaries, and accept them as long as they were willing to come, no matter how high the price they offered, and on the other hand, he instructed Liu Yongfu, the ambassador to the Qing Dynasty, to look for outstanding talents from the Qing Dynasty, and there were some talents in the Qing State in this era, such as Zhan Tianyou, a pioneer in China's railway industry.

However, compared with Germany and Russia, there are very few talents in the Qing Kingdom, so Lin Fei's focus is on recruiting German and Russian scientists, in this, Lin Fei especially wants to recruit two people, one is the famous chemist of his own time, the German Haber, and the other is the father of rocketry in his own era, the Russian Tsiolkovsky.

Haber is the founder of the synthetic ammonia industry, at this time Lin Fei has started the synthetic ammonia technology, the technicians are working overtime to test the conditions of synthetic ammonia, with Haber's help, it is bound to be able to get twice the result with half the effort.

And Tsiolkovsky is the founder of rocket technology, rockets are one of the things that Lin Fei wants to have, if a rocket is developed, whether it is equipped for the army or the navy, it is a big killer.

As for the more famous Curie couple, Lin Fei did not recruit them, firstly, because they were in France, and the Chinese were completely enemies of the whole people in France; Second, because the radioactive elements they are studying are not needed yet, and the matter of recruiting them will be discussed later.

As for Einstein, Lin Fei also wanted to recruit, but Einstein was only twenty years old at this time, and it was too unusual to recruit such a young man, so Lin Fei did not recruit him.

The recruitment of talents in Germany and Russia was very smooth, and scientists such as chemist Haber and the father of rocketry Tsiolkovsky came to apply, but Zhan Tianyou's recruitment encountered great difficulties.

Zhan Tianyou is the talent that Lin Fei wants to recruit the most, and there is no one, because what the Chinese Empire needs to build most now is the railway, although relying on the United States and German railway companies to build, but after all, it is a snort, not a long-term solution.