Shen Yiyi didn't notice that someone was observing him through the bookshelf. In fact, she's busy picking up books from the shelves right now.

It seems that it is not unreasonable for the ancients to say that they should travel thousands of miles and read thousands of books. At least now Shen Yiyi has discovered that the collection of books in the library in Shenyang is still very different from that in Shanghai. Unlike the Shanghai Library, where most of the science and engineering books were translated from England and the United States, the libraries in Shenyang during this period had some important basic knowledge textbooks and professional reference books, most of which were translated from Japanese or Russian, especially those Soviet books that were translated shortly after the liberation. Shen Yiyi did not discriminate against Soviet books, in fact, the academic level of science and engineering in the Soviet Union has always been very high. For example, Europe and the United States have imposed a technical blockade and embargo on some of China's cutting-edge military technologies, but we still have to find a way to get them in from Russia. That's where the strength of a country lies.

The real power of the world is not how much GDP you have, or how many houses you build in a year, or how gratifying the real estate development is. A real power is precisely an industrial power, and how many steel behemoths that other countries can't make are the standard that reflects how much you have the ability to conquer the world. The Soviet Union, which was able to confront almost the entire Western society with the strength of one country, even if it failed at the end, at least it held out for so long. This nation is respectable. In fact, in the history of science in the world, the Russians and the French are the most outstanding performers in mathematics, the mother of modern science. So their design capabilities are outstanding.

One reason why Shen Yiyi doesn't like to read Soviet books is different from the system of education she received in the south when she was a child. Education in Shanghai has a strong Anglo-American tradition, as it was from Shanghai that Western missionaries first spread Western civilization in China. For example, the textbooks used by Shanghai Jiao Tong University before the liberation were simply taken directly from the Massachusetts Institute of Technology. Therefore, in terms of thinking, the arrangement of knowledge points in the education system received by Shen Yiyi is Western, which is different from the Soviet system. And another reason. We have to talk about the arrogant personality of the Russians. If there are certain discoveries or theorems in modern mathematics or physics, the Russians will inevitably say that they discovered or created them, even if this is not the case in the system that Shen Yiyi has studied. The simplest example is Gauss's theorem, an important theorem in higher mathematics.

Gauss's theorem is a theorem that says that an integral on a surface can be transformed into an integral on a substance. In the British and American education textbooks that Shen Yiyi came into contact with, this theorem is called Gauss's theorem. However, in the textbooks of the Soviet system, this theorem is called "Ostroglavsky's theorem", which is very difficult to say. That's why some people call him the "Austrian theorem". But for a person like Shen Yiyi, if she suddenly looks at a theorem mentioned in a book, especially when it mentions the "Austrian theorem", her intuition will not be able to react for a while, and she will think about what theorem this is talking about. And if she hadn't learned elsewhere that Gauss's theorem and the Austrian theorem were the same thing, she might not have understood them at all.

There is more than one such example. Therefore, it is conceivable that students who have been accustomed to receiving a certain kind of education for a long time will first come into contact with a system that is different from their own education. Even if it is something like natural science, which is supposed to be a real universal value, there may be a situation where you don't understand me, and I don't understand you.

Shen Yiyi really went out of his way in order to find a book for Luo Yu. She has now lost even her usual principle of not reading books on the Soviet intellectual system. If you don't lose it, you can't do it, because in the library here, it's really not easy for you to find a book with a similar system to the system in Shanghai in this time and space. So she flipped through a few books, especially the ones with thickness. The formulas commonly cited in such books are not only given nouns. What's more, the specific form of the formula is also listed. Shen Yiyi usually sees the formula listed, and when he compares it, he understands which formula the author is citeting. It's just that such a book has also invisibly increased Shen Yiyi's workload. Thick books are generally very heavy.

Of course. Except for the problem of translating names, the Soviet books are very well structured, especially very logical. Therefore, after really overcoming the discomfort of translating the name, Shen Yiyi was still very happy to see it after getting used to it. Even with An Zhusheng, he found that this girl actually picked up a few tomes of books and read them with relish. This made him more interested in seeing, this girl is purely watching and playing. I still really understand.

Shen Yiyi took a few books one by one, turned around and walked towards the reading area in front of the stack. She had already discovered that Luo Yu seemed to have found "Vector Analysis" and was sitting there waiting for her.

Shen Yiyi walked to Luo Yu's side and glanced at the name of the book Luo Yu was looking for, it was indeed "Vector Analysis". So she put the few books on fluid mechanics she had found for him in front of the other party and sat down directly.

"Wow. Just these few books, I think you should have to read them all over the winter vacation. But all the knowledge points you asked me are here, so you can arrange your own time. "Because it was approaching the end of the year, there were not many people in the library. Therefore, when Shen Yiyi consciously lowered his volume, the library staff did not stop the two from talking.

Luo Yu looked at the thickness of the two books that Shen Yiyi had given him, and his face couldn't help but feel embarrassed. These two books are so thick, it's really hard to read them simply. This is not a novel, it is purely a pastime, so you can read it at a glance and ten lines. This is a knowledge point, you need to understand and digest it carefully line by line, and finally transform it into the knowledge you have, so you can do it. But thinking that he had just expressed his hope to Shen Yiyi that he could let her help him make up for the knowledge he didn't understand, it was not okay to retreat now, so he mustered up the courage and asked Shen Yiyi: "Yiyi, are these books?" But which one should I read first? ”

After listening to Luo Yu's question, Shen Yiyi was quite appreciative in his heart. This boy deserves to be called a science genius, and his thinking is very clear. When ordinary people see so many books, they have long been frightened and suffer from reading phobia, it is difficult for him to be so sober, and the most important thing now is how to start reading these books. It's a matter of reading flow. Once you have mastered the reading process, you will get twice the result with half the effort. In fact, many textbooks edited by foreigners will write a guide in the preface, telling the reader what the recommended reading order looks like if they are interested in something. On the other hand, in our country's textbooks, there are often no authors who pay attention to such a detail. Shen Yiyi believes that this actually reflects why the author wants to write this book, whether it is purely for the author's own desire for expression, or for the purpose of his own promotion and evaluation, or whether he really wants to pass on the knowledge he has mastered to readers, that is, the so-called reader-centered theory.

Since he had promised that Luo Yu would help him, of course Shen Yiyi would answer this question in detail.

"So, I'll show you an example, and you'll know which book to read first. I'll let you go first to the book "Vector Analysis", which is a math book. Mathematics is the mother of all things. So of course you should read this book first. Because many theorems and formulas in fluid mechanics actually use vector operations. If you don't understand vector analysis first, you'll have a hard time reading a monograph on fluid mechanics. For example, the formula I deduced for your grandfather last time, you can see me show you step by step. ”

Shen Yiyi asked Luo Yu to take out a piece of paper and a pen from the bag he carried, and simply explained to Luo Yu on the desk the various basic knowledge points and calculation skills used to derive this formula.

"You see, this formula is a basic fluid mechanics formula, called the momentum theorem, or the Navier-Stokes equation, or some people call him the Nass equation. This formula is found in all fluid mechanics textbooks. The two books I found for you also have them. If you're interested in reading on your own. Note that from this step to this step, the law of vector operations must be used, and it is also a very important formula......"

Shen Yiyi explained carefully, but Luo Yu listened carefully. Last time in front of his grandfather, Shen Yiyi explained very quickly, but today, in front of him, Shen Yiyi slowed down the speed of deduction and told him step by step what the principles or formulas used in the process were, and which part of these books on the table should be found. This made him suddenly realize that he was still able to understand these knowledge points. He couldn't help but increase his confidence again, and his eyes became more determined when he looked at the tomes on the table.

The two of them devoted themselves almost entirely to teaching. In addition to writing and drawing on the paper, Shen Yiyi also picked up the books on the table from time to time, turned to the page of the formula he wanted to quote, and pointed out the specific place to Luo Yu. In addition to having no distractions, he naturally didn't notice that next to his desk, there was an old man carrying a coffee bottle with boiled water and a bag of bread also sitting. Moreover, this old man came shortly after Shen Yiyi came back to sit down.

An Zhusheng, because of his curiosity about whether Shen Yiyi really understood the content of the book she was reading, almost followed Shen Yiyi to the reading area. He also specially found a place close to Shen Yiyi to sit, and pricked up his ears to listen to the girl's speech to the boy next to him. He was surprised to find that the girl was explaining the learning method of fluid mechanics to the boy, and it seemed that every sentence had an idea. Looks like she really understands. (To be continued......)

PS: I sent the second shift today.

I'll talk about it tomorrow morning.

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