"Now let's set this side of the graph to A, and the top side length to B...... When they reverse the angle beyond R degrees, the distance between the two sides will exceed the original distance by 1 meter, but if we look at it from 90 degrees up, we will find that ......" Duan Yun patiently explained his new formula of topology to Fefman.

Duan Yun's explanation is familiar and easy to understand, but in fact, this formula is quite complex and rigorous, and the more Fefman listens to it, the more surprised he becomes.

What Fefman never expected was that with his mathematical skills and attainments, he didn't even understand the first formula of Duan Yun's new inference, which shocked him in his heart, and at the same time, he had begun to gradually put away the last trace of his contempt for Duan Yun.

In the past, Fefman's impression that the students in China basically have a very good mathematical foundation, which is reflected in their strong mental arithmetic ability, but in the field of high-end mathematics, they rarely have their own spirituality and achievements, even if there are Chinese mathematicians who occupy a top position in the field of mathematics in the world, they are all students and scholars who have studied in Europe and the United States for further study, and China basically cannot train the world's top mathematicians, which can be seen from the fact that there has never been a Fields Medal winner in the mainland of China.

The reason for this is actually the result of differences in the education system.

Strictly speaking, China does attach great importance to the basic mathematics education of students, domestic mathematics from the beginning of primary school, focusing on oral arithmetic ability and basic problem-solving ability, in the course arrangement and duration, is also very long, and from the middle and high school after entering the middle and high school, the daily learning time of students even once reached more than 12 to 15 hours a day, after the second year of high school, most of the school's evening self-study time is basically until 10 o'clock in the evening, and the student's body and energy have been in a high-load operation.

Students from European and American countries are relatively much more relaxed than domestic students.

Taking British schools as an example, British primary schools do not have high requirements for students' oral arithmetic skills, and even encourage students to use calculators to solve daily problems.

In addition, the study time of British students is also very short, even in junior and senior high school, school is generally dismissed at more than 2 o'clock in the afternoon, homework is very little, and the learning content is very small.

If you intuitively compare the examination papers of students from the two countries, you will find that the content and difficulty of the test papers of Chinese junior high school students are even more difficult than those of British students' high school papers, and the gap between the two countries' curricula is at least two to three years, which can explain why the gap between the two countries' students' class time is so large.

Finally, there is the difference between the two countries in terms of higher education.

The current education system in China is actually a kind of examination-oriented education, and the purpose of students studying hard is to be admitted to the ideal university in the future.

As long as they successfully enter the university, the four-year college life will be much easier when they were in junior high and high school, which is why many students on the college campus will be addicted to online games and even busy with love and cohabitation.

In developed countries in Europe and the United States, the situation is diametrically reversed.

Universities in European and American countries are very much admitted nowadays, and the acceptance rate is also quite high, but once you enter European and American universities, the studies are quite heavy, and the course schedule is far more compact than when they were in junior high school, and it is not easy to successfully graduate and get a college diploma.

In addition, unlike domestic education, which focuses on the development of students' foundation, foreign education attaches more importance to the development of students' personality and creativity, and it is precisely because of this that the high-tech innovation ability of Europe and the United States has always been stronger than that of China, especially in the field of high-end disciplines, European and American scholars have always occupied the absolute commanding heights.

So when Fefman saw Duan Yun's incredible creative thinking, he instantly changed his stereotypical perception of Chinese students.

In the field of low-end scientific research, Chinese scholars do have a more solid foundation than European and American scholars, but in the field of high-end scientific research, imagination and creativity are more important, and from this point of view, European and American scholars have obvious advantages.

However, the emergence of Duan Yun will undoubtedly change the perception of Chinese scholars in the field of mathematics in the world.

“ …… If we gather all the closed loops of this figure into one point, you will find that the trajectory of these points is actually regular at any angle, and you can see me draw a three-dimensional drawing line from another angle......" Duan Yun spoke, and skillfully drew several strangely shaped three-dimensional figures on the paper in one breath, and at the same time marked a large number of symbols on them, only to hear him continue: " If you look at these diagrams, the basic principles are all figured out, what we need to do is to set the closing point at the junction of these graphs to a variable value 'α', so according to the calculation of the linear equation, we can know ......

Duan Yun explained very carefully, and Fefman also listened quite carefully.

If other mathematicians saw this, they would have been stunned.

You know, now Fefman is definitely the top of the pyramid in the world of mathematics, he became famous at a young age, less than 30 years old has won the Fields Medal, these decades, almost every one of his papers will cause a huge sensation in the world of mathematics, and now he can be successfully elected as the chairman of ICM, itself is a high recognition of his mathematical achievements!

In addition, it is also a great honor for any expert who has been engaged in the field of mathematics, and now Fefman is a visiting professor at many universities in the United States, he only teaches one or two lectures a week, but he can receive a salary of more than 100,000 dollars a month, even in the United States, this is a very high salary, in addition, Fefman will also be invited to participate in some business lectures and lectures, and the remuneration is quite amazing.

And now, such a Taishan figure in the mathematical world would listen to a hairy boy less than twenty lecture with full attention, and he also looked respectful, which is simply unimaginable in the eyes of others.

However, Fefman completely ignored his identity and image at this time, he was completely attracted by Duan Yun's explanation, and his mind followed Duan Yun's words to operate rapidly, and he completely entered a state of selfless learning.

And as Duan Yun's explanation deepened, Fefman's heart began to be more and more shocked.

Fefman has always felt a sense of loneliness, not because he has no family or friends around him, but because he has confidants in academic exchanges.

Since his research in the field of mathematics has reached the highest point in the world, he has the feeling of seeing all the mountains and small mountains, and there are almost very few people who can really communicate with him at this level, which cannot but be said to be a top scholar's sadness.

But at this moment, after listening to Duan Yun's lecture on Duan Yun's topic, Fefman suddenly felt that he was an out-and-out elementary school student in front of this bald boy......