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On the fourth day of Su Yichen's arrival at the school, Tang Wei, who had completed the formalities, officially left, his house in Shanghai had already been sold, and most of the electrical appliances and daily items in the dormitory were left to Su Yichen, dragging two suitcases, and resolutely walked out of the school gate to find and continue the ideals he had when he was young.

On the day Tang Wei left, Su Yichen didn't send him, not that Su Yichen didn't want to send it, but Tang Wei declined all his colleagues and friends to send him, in his words, leaving here is a new life in his life, this is a thing worth being happy and celebrating, and the farewell is sad, so it's better not to mix happiness and sadness together.

Although they have only known each other for a few days, whether it is Tang Wei or Su Yichen, they regard each other as good friends. The word friend is sometimes easy to say, but sometimes it is also difficult. Some people have known each other for a lifetime, but they are just nodding friends, but some people may only know each other for a few days, but they will have the feeling of hating each other.

Su Yichen knew in his heart that Tang Wei was actually the same kind of person as himself, and the words he yelled at himself in the small restaurant that day still echoed in his ears. Tang Wei's complicated expression at that time was full of anger, helplessness, grievance and bitterness, although he was over forty years old and had succumbed in the face of reality, but in the end he did not forget his ideals and chose the path of return.

Standing on the windowsill, looking at the streets and alleys that were already empty, Su Yichen sincerely wished Tang Wei success. Before Tang Wei left, they left each other's email addresses and agreed to keep in touch, and when Su Yichen learned that Tang Wei went to the United States, he asked him to help him inquire about Luo Yan's news over there. Tang Wei didn't shirk either, found a piece of paper and deliberately recorded the situation in detail, saying that he would help inquire after he settled down there, and if there was any news, he would notify Su Yichen as soon as possible.

Su Yichen quickly adapted to the teaching life in middle school, teaching junior high school physics is a very simple thing for Su Yichen, not to mention the preparation records that Tang Wei gave him before leaving.

In the first class, the principal Liu Jiashan deliberately listened to half a section at the back of the classroom, and when he found that the young Su Yichen was not only not stage frightened in the classroom, but talked eloquently like a teacher with rich teaching experience, and the description of physics knowledge was from shallow to deep, and the evidence was vivid and interesting, Liu Jiashan was also completely relieved, nodded slightly with a smile, and turned back to the office.

The teaching work is dull, but Su Yichen is busy in his spare time. In the eyes of others, Su Yichen, a "young man", is a little strange, although his teaching standards are good, his personality is easy-going, and he usually gets along well with his colleagues, but the problem is that he does not have a colorful spare time life like ordinary young people, such as sports, music, travel, or gathering with friends, watching football, chatting, drinking coffee, and even singing in bars and going to karaoke.

It can be said that Su Yichen doesn't seem to have any hobbies on weekdays, except for classes, he is either writing and arithmetic in the office, or he is inexplicably in a daze, often going to the nearby university town library or staying in the school's physics room and computer classroom after work, and basically locks himself in the dormitory more time, and he doesn't even have a girlfriend at a young age, he dresses ordinarily, and he doesn't care about life, living a boring life like an old antique in the last century.

In the eyes of outsiders, Su Yichen is such a weird person, and even when the summer vacation is over at the end of the semester, the other teachers either go back to their hometown to rest, or go out to travel and enjoy the natural scenery together, but Su Yichen is good, he didn't go anywhere, he still lives in the school dormitory, and he still lives a quiet and regular life every day, which makes many people incomprehensible.

However, how to live life is someone else's private matter after all, for the school, this month has confirmed Su Yichen's teaching ability, as the principal Liu Jiashan also formalized the work arrangement of Su Yichen's junior high school physics teacher before the summer vacation.

For this arrangement of the school, Su Yichen sincerely thanked Liu Jiashan for his trust, but in the process of talking, Su Yichen's mind was not on this, serving as a junior high school physics teacher in the school, this is just a superficial job he stayed in Shanghai, and he is now most concerned about his own business.

In the past month or so, Su Yichen began to gradually sort out the information on the Rand civilization he obtained from Ike, although some of the information was incomplete, and many of them were just a general direction, but the things in his mind were enough to make Su Yichen spend a lot of time.

When he was in Shimen, due to the constraints of conditions and other reasons, Su Yichen only sorted out the general situation first, but now that he has an independent dormitory and a better research environment, he can also calm down and sort out these things well, and then select some of them as his research goals.

As an expert in physics, Su Yichen's most important focus is, of course, the practical application of controlled nuclear fusion in space vehicles, or spacecraft engines, which is the key to the real flight of human beings out of the earth and into space. Of course, Su Yichen also knows that compared with the Rand civilization, which has curvature technology and even jump technology, controlled nuclear fusion is just the first step for the primary civilization to go to the universe. This technology is almost equal to the huge difference between the atomic bomb and the two-kicker in modern science and technology in the Rand civilization, but compared with the energy drive of space vehicles in the current human science and technology, it is beyond a whole era.

Of course, with Su Yichen's current ability, although he has the scientific and technological guidance of the Rand civilization, it is almost a fool's dream to build a controllable nuclear fusion engine on his own, and such cutting-edge technology is simply impossible to achieve by relying on a blacksmith shop alone, which is like an aircraft designer who can never build an airplane with only a blacksmith shop. Now, what he has done is nothing more than preliminary sorting and research on the theoretical side, just like building a high-rise building, the first step is to design the drawings, then build according to them, and then lay a solid foundation, so that the building can rise from the ground step by step. Su Yichen is now doing this first step, and it is also the most critical step.

The computers of this era are much more advanced than 30 years ago, and with the help of computers, Su Yichen carried out the preliminary sorting and research process quite smoothly. However, the more he continued to do it, the more he felt that the computer was less and less helpful for his work, firstly, the next research and demonstration work required a large number of calculations, which were extremely complex and cumbersome, and could not be achieved by relying only on the speed of ordinary computers.

In addition, the computer's operating system and software tools also made Su Yichen feel dissatisfied, more than 90% of the current computers use the Microsoft operating system, this kind of system feels unsatisfactory after he uses it, and finds that the congenital deficiencies of the system language and source code are even more flawed.

There are many types of computer languages, which can be divided into three categories: machine language, assembly language, and high-level language. There is also another way of saying it, that is, there are four types of languages: low-level languages, high-level languages, specialized languages, and scripting languages. But no matter how it is distinguished, all these computer languages have advantages and disadvantages, especially in terms of high-level languages, since the advent of the FORTRAN language in 1954, a total of hundreds of high-level languages have appeared in succession for decades, and there are dozens of important ones, including FORTRAN, ALGOL, COBOL, BASIC, LISP, SNOBOL, PL/1, Pascal, C, PROLOG, Ada, and C++, VC, VB, J**A, etc. The most commonly used and well-known C language is the most common language, but even the C language, which has the characteristics of assembly and high-level language, still has many shortcomings.

The operating system used by Microsoft, Su Yichen found that the computer languages it uses are complex and diverse, including not only the common C language, but also C++, C#, VisualBasic, Jscript, PHP and other more than ten languages, and its various languages are established one by one according to their use, underlying layer, interface and other different requirements, and then combined as a whole to form the entire operating system, which is somewhat similar to the modular engineering used by Su Yichen when they developed the Galaxy Mega Machine projectThe advantage of this is that it can use a variety of different types of computer language to combine to play its advantageous role, and also shorten the development and programming time, improve efficiency, and learn from each other's strengths and weaknesses, so as to form a complete system.

But the problem is that its disadvantages are also very obvious, the combination of different computer languages, certainly not to achieve the effect of complete fit, and in the operation and switching of language operation, the system also has to reserve a part of the resources for deployment, which also affects fluency and increases resource consumption. What's worse is that due to the huge amount of engineering, there will be countless vulnerabilities between templates (modules), which is also a reason why Microsoft's operating system is full of vulnerabilities and has been criticized.

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