Why is college knowledge more difficult than high school knowledge? It's not because the foundation is difficult, take physics as an example, both are based on classical physics, that is, the application of Newton's theorem, Maxwell's law and other laws, and the increase in difficulty is only in the degree of complexity, for example, calculus will never be used to solve problems related to Newton's laws in high school, but calculus in college physics is very common.

The engine is the most complex equipment in mechanical engineering, not to mention manufacturing, that is, a large number of calculations are required to solve various problems in theory, not to mention calculus and the like, there are dozens of mathematical models alone, and there are also many thermodynamic models, these knowledge requires a lot of training, the training method is to keep in contact every day, continuous learning, and doctoral students do these training, and now Liu Lang these graduate students have some time to do some other things every day, but if they are admitted to the doctoral students, the only job is to stay in the laboratory day after day and continue to trainSometimes I even have to take time to eat and go to the toilet.

It is said that practice makes perfect, this is true, the same knowledge, when you continue to repeat learning and applying tens of thousands of times, you will give birth to a lot of new ideas, this is the so-called self-perception, doctoral students and graduate students, their understanding and perception of knowledge is much deeper, Professor Claire is the same as those doctors.

For example, those masters in it, one move and one style seem to be ordinary, but the battle is endlessly changing, those mediocre moves and one style are similar, but the battle is powerless to fight back, all of them are that one move, the difference lies in your understanding of this move, the master because of the long-term exercise to do one inference or even one inference, not to mention the inverse three, even the essence of this move has not been understood, of course, can not do the master.

In Bob's eyes, with his ability, it still takes a year to do a lot of study and experiments to understand the content of the material, so what about Liu Lang! Many knowledge points are not very clear to him now, and he also needs to learn, but this time is far less than Bob.

In Bob's cognition, it is a truth that success requires 99% sweat, there is no knowledge that cannot be mastered through hard work, this sentence is indeed true, just for the understanding of knowledge, even if it is the theory of relativity, quantum mechanics and even about black holes, as long as you learn every day, you can understand it thoroughly, but is this real success? It is also no, at least in Liu Lang's eyes, it is not a success, success is to truly integrate this knowledge into his understanding of the world, and then draw inferences from one another to summarize a new theory, this is the real success, and this success can not be watered with sweat alone.

Success is one percent of talent and ninety-nine percent of sweat, this is a complete meaning, this is Edison's famous saying, known by the whole world, but there is still the second half of the famous saying, few people know, that is, there is no one percent of talent, and the other ninety-nine percent of sweat is just sweat after all.

The first half of the sentence makes those people with mediocre talent feel full of motivation, but with the second half of the sentence, a basin of cold water is directly poured on these people's heads, without talent, many things are really not good.

Throughout the history of the development of human science and technology, it is really a stage for a group of geniuses, Archimedes, Euclid, Gauss, Galileo, Newton, Tesla, Maxwell, Einstein, Bohr, the discoveries of these people have long been the foundation of human science, which of them is not a brilliant person?

But if it were only them, the history of mankind would not be what it is now, because theory and practice are two aspects, and their discoveries have created basic theories, but the development of mankind also lies in the continuous practice of these theories, which is something that can only be solved by hard work.

Therefore, Edison's famous saying is right and wrong, the key is what is the understanding of success, although the principle of engine operation is thermodynamics and classical mechanics, but it can be put on four wheels and it becomes a car, Ford invented the car, he is a success, which is understandable.

Needless to say, Liu Lang's talent is also very talented, but he thinks that he is much worse than Liu Lang, even Professor Claire is convinced, Bob feels that it will take him a year to learn these materials, Liu Lang has a higher IQ than himself, but it will take half a year, two months can not be done, but this is his common sense, for ordinary people, but for those who can be compared with Liu Lang in history, all common sense is useless.

Liu Lang feels that he can fully grasp these materials within a month, and the knowledge of mathematics and mechanics is no problem for him now, it is just the application of basic theorems, but the amount of calculation is more, others need to go through a lot of training, and Liu Lang's brain circuit directly simplifies the amount of training, ordinary people spend ten days, he can achieve the same effect in one hour, and its efficiency is too much.

As for saying that it will take him a month to master this knowledge, mainly to learn the theories involved in these materials, and he can ask other teachers about these theories, or he can go to the Apple computer in the library to retrieve data, and then find the books and read them directly, as long as he masters these theories, then these materials are basically completely mastered, at least there is no problem in theory.

Liu Lang began to study fascinated, recorded problems when he encountered them, and took him to ask them after reading them.

"Liu Lang, go home!"

Liu Lang felt that someone had touched him, he was stunned for a moment, and raised his head to see Sun Hu standing beside him.

"Brother Sun, what's wrong?"

Liu Lang asked.

"Look outside, it's dark, it's half past five!"

Sun Hu pointed to his watch and said.

"It's half past five, so fast?"

Liu Lang sat here after lunch, this one was more than five hours, but he felt that it was only half an hour.

But looking at the notes he made next to him, there were already more than ten pages, and he had also read more than a hundred pages of these materials, but he was too focused and forgot the time.

"Oh! I'm hungry!"

Liu Lang rubbed his stomach, and then was about to stand up, but his legs went weak and sat back down.

This is Liu Lang's "old problem", if you use your brain too much, you will be weak, of course, it is the reason for not enough energy, everyone is like this, but Liu Lang's brain consumes more energy.

Liu Lang took out a piece of chocolate from his pocket and put it in his mouth, and it was much better after about ten minutes.

"Brother Sun, let's hurry up!"

It's dinner time now, and the family is probably in a hurry.

Liu Lang packed his schoolbag, Sun Hu took it, the two left the classroom quickly, when he went out, Sun Hu also reminded Liu Lang not to forget to put on his coat, now it is almost December, even if the highest temperature in Los Angeles is only a dozen degrees, the lowest temperature at night is close to zero, there is basically no snow here, but the rainfall is very rich, especially in winter, the rain is more than summer, and the cold rain makes many people unbearable.

Half an hour later, the two of them returned home, and as soon as they entered the hospital, Liu Donglai greeted them.

"Why are you late today?"

"I forgot the time when I read a book!"

"The meal is ready, just waiting for the two of you!"

Xu Wenxiu and Sun Hu's wife, Chen Shuying, had already prepared the meal, stewed beef, roast chicken, baked potatoes and a plate of fried beans, steaming and fragrant, while Sun Hu's son Sun Xiaohu was sitting in front of the TV watching cartoons, which was Transformers.