Li Yu was ready in one step: "Let's make a long-column cart." The store owner smiled happily: "Good taste, the long-column cart is made of good materials, and it is also much more expensive. The body of the cart is 120 taels of silver." Well, it turns out that what you buy is not as good as what you sell!
Unknowingly, he led himself into a consumption trap~ Li Yu continued to bargain: "60 taels?" The store owner actually said directly: "Deal!"
In any case, Li Yu is now a serious family who owns a house and a car, and he can be regarded as a well-off Beipiao.
However, the maintenance cost of this thing is much more expensive than buying a BMW. After all, it is a living horse, and it cannot be done by adding gasoline.
Li Yu said to Zhao Qian: "You will be very busy in the future. You must learn to drive a carriage and take care of horses." Zhao Qian said carefully: "Such an expensive horse must be taken care of! Don't worry, sir, I won't let it If it doesn't work, I will sleep with it in the stable!" What Zhao Qian said also made Li Yu realize that after buying the horse and carriage, it took up more space, and it seems that he will rent a house next to the house. It can only be used as a stable, otherwise if two horses are placed in the courtyard, the smell will be too strong.
Just like buying a new car, Li Yu couldn't help but get on the horse and go home immediately. Zhao Qian spent a lot of effort to lift the rickshaw into the carriage, and then pulled the carriage home.
He still doesn't know how to sit in a car and drive a carriage. It's really a technical job, and it can't be mastered immediately. At least it takes some practice to master it.
However, Zhao Qian's mood was as good as Li Yu's, and he was promoted to a level. After Li Yu returned home, he arranged for Uncle Wang to go to the teahouse to find Cui Laosan to rent three private houses next to his courtyard. This was much cheaper than the courtyard house, only 2 dan of money a month.
After finishing all this work, Einstein's telegram also arrived: "Dear Mr. Li Yu, I am very surprised to receive your reply so quickly. To make a long story short, what I am currently thinking about is the issue of the speed of light. If the speed of light does not change, will It can be extended to different inertial systems." Li Yu replied: "I also firmly agree that the speed of light remains unchanged, no matter how the reference system is transformed. But different from the conventional mechanical system, to ensure that the speed of light remains constant, a new transformation method must be introduced. But, one of the fixed constants is the speed of light, which is the mathematical method created by Professor Lorenz." The content of the telegram should not be too long, but Li Yu made it very clear, and Einstein must have understood it.
Li Yu originally didn't want to touch upon the theory of relativity, but now that Einstein himself has approached him, he might really become the co-founder of the special theory of relativity.
However, although the special theory of relativity is still far less important than the general theory of relativity, it is much more famous.
As we all know, special relativity has two most basic assumptions: the speed of light in vacuum is the same in any inertial reference frame; the laws of physics are also the same in any inertial reference frame.
The subsequent special theory of relativity is based on these two assumptions, just like Euclid derived the entire "Elements of Geometry" through five postulates.
Of course, the modification of the fifth postulate has led to two huge non-Euclidean geometries, among which Riemannian geometry has deeply affected the general theory of relativity. This is a story for another time.
Now Li Yu directly pointed out that the most critical of the two assumptions is that the speed of light remains unchanged. This point alone is already very advanced.
You must know that as early as 1887, Michelson and Morley confirmed through the famous Michelson-Morley experiment that the speed of light is the same in different inertial systems and in different directions, thus denying the ether hypothesis.
But there are still very few people who believe this, because this experiment can be said to be shaking the entire building of physics.
precisely because of its potential
The "destructive power" is amazing, so it can be rated by Lord Kelvin.
One of the "two dark clouds". Li Yu also pointed out the transformation method, that is, how to explain the constant speed of light, which is even more precious.
It's just that the telegram was too short, and Li Yu could only express his ideas for the time being. But this is also very remarkable. I don’t know how Einstein would respond after seeing it.
Li Yu was not in a hurry, because according to the historical process, Einstein would not propose the complete special theory of relativity until 1905.
So although the two telegraphers currently only communicate once or twice a day for this kind of scientific discussion, it is actually very fast.
Having said this, the mid-term exams at the Capital University are about to begin. The other students were very nervous, but Li Yu was calm and relaxed.
As for why, of course the question is too simple. As mentioned before, the arithmetic questions in the entrance examination are almost at the level of elementary school mathematics application questions. Although this time it is a little more difficult, it is at best the level of first-grade mathematics.
Other subjects such as physics, chemistry, geography, etc. were also difficult for Li Yu. They were all junior high school knowledge. It's just that the Chinese Studies topic was indeed difficult for Li Yu. It was really difficult. He didn't understand the topic very clearly: Gu Tinglin's thesis must have the purpose of the Six Classics. The task at that time was to try to explain his theory.
What is the role of classification and writing in the Six Classics? Li Yu only knew that Gu Tinglin was Gu Yanwu, and he also knew Gu Yanwu's words
"Every man is responsible for the rise and fall of the world", as well as some of Gu Yanwu's life, but how could he possibly know what Gu Yanwu had said in Confucian classics.
Unfortunately, I will probably fail this subject again! Tragedy, it seems, will become another one
"Good story". Fortunately, Ding Yuliang and principal Zhang Baixi knew what level Li Yu was, and he was already an imperial master after all.
So Ding Haoliang found some test questions from American universities and gave them to Li Yu. Li Yu was much more comfortable with this kind of serious questions from modern universities, but Ding Haoliang was really ruthless and chose some of the most difficult questions from the University of Chicago or Yale University graduation exams.
But Li Yu is a person who has been beaten in exams for many years. Mathematics was not covered in the postgraduate entrance examination back then, so he can completely handle this difficulty.
Moreover, Li Yu also used his expertise in Japanese, German, and English to gain extra points in other aspects, so he was finally ranked first.
But the study of Confucian classics is indeed a failure! Li Yu is really about to give up... The most he can do is memorize more ancient prose, so just lie down!
In short, once this exam is over, Li Yu can continue to be cool again. After the results were announced, principal Zhang Baixi also found Li Yu. Li Yu thought he was getting some kind of reward, but Zhang Baixi said to him: "During this period, I carefully read the education paper you wrote for the entrance exam. The more I read, the more exciting it became. There are many things that I think can be adopted into the university hall." Li Yu wrote it based on how he went to school in his previous life. It was all personal experience, and he must be familiar with it, so he asked: "What point should the principal adopt?" Zhang Baixi said: "I saw in your article that physical education should be valued starting from elementary school. After thinking about it, it does make sense, but the specific system and curriculum details have not been figured out yet." Physical education is definitely the favorite of students. , Unexpectedly, Zhang Baixi mentioned this, and Li Yu also agreed very much: "The principal is so right! As for the content of the physical education courses, it is very simple, it is nothing more than track and field and ball games. Have you ever heard of the Olympic Games? It has been held twice." Zhang Baixi said: "I have only heard of it briefly." Li Yu said: "As long as you have heard of it, the items in the physical education class should be according to the Olympic Games, such as running and high jumping. By the way , there is another more interesting one, I almost forgot." Zhang Baixi did not expect that Li Yu had so many ideas, and continued to ask: "What is interesting?" Li Yu said: "There is a ball game that is very popular in Europe now, called football."
"Football?" Zhang Baixi really had never heard of it. Li Yu thought for a while and said, "You can understand it as Cuju, a sport that existed in our country before." Zhang Baixi knew Cuju as soon as he heard it.
"It is said that the sycophants in the Song Dynasty were seeking to be masters of Cuju. This kind of sport may have the appearance of ruining the country." Li Yu said: "It was not Cuju that led to the ruin of the country. Song Taizu also liked Cuju! And what I said about football and Cuju is still a little bit different. It’s different, it’s very popular in the West now.” Zhang Baixi said: “If it is beneficial to school construction, it can be introduced.”
"Of course it's beneficial!" Li Yu said,
"There was a football event in the Second Olympic Games that just ended more than two years ago." Zhang Baixi also trusted Li Yu. He also heard that such a grand sports event also had a football event, so he asked with the mentality of giving it a try: "What does this football look like?" Li Yu said: "There may not be one in the capital, but I think there must be one in the British Concession in Tianjin. Let them ask and they will find it soon." Modern football originally originated in the United Kingdom, and the British have an old rivalry. Needless to say, I love football. Their concession is so big that they must have brought football here a long time ago.
Historically, the Capital University had a football team very early on, and Li Yu liked playing football in his previous life, so he was also willing to introduce it to the University.
It’s just that the follow-up to Chinese football is really hard to describe. But now the whole of East Asia has not had much contact with football. Maybe Li Yu can lead the Capital University Football Team to beat Japan and South Korea... By the way, there is no South Korea yet. I should say North Korea, let alone North Korea. .
Zhang Baixi said: "It seems that you know football very well. You can worry about asking about this." Li Yu said: "No problem! In addition, our school can also hold sports games, which is also a routine practice in Western universities." Zhang Baixi nodded: " This suggestion is very good and I will adopt it." Historically, the Capital University would not hold its first sports meeting until two years later, so Li Yu pushed for it to start early.
Sports are definitely beneficial to the university, and the body is the capital of revolution! Later, Tsinghua University even called out
The slogan "Fifty years of healthy work for the motherland". Moreover, Tsinghua University attaches great importance to sports, and those who fail in sports cannot even graduate.
This naturally urges everyone to exercise, but who can say that there is anything wrong with exercising. Li Yu has a little bit of fun mixed in his heart: material life is too expensive now, and Li Yu is not a nerd. The introduction of football can really make school life happier.
