This training class began more than half a month ago, before Liu Lang did not participate because of too many things, the school and the Education Commission did not care too much, after all, it is conditional for Liu Lang to join, besides, Liu Lang went to participate in the Olympic Games mainly to show the "style" of the international prodigy, not to win any good rankings, this time the main team members of the physics competition are those students majoring in physics in the junior class.

Lu Hua is a well-known physicist in the country, and many of the students he has taught over the years have become physicists, and his knowledge is to teach in well-known foreign universities without any problems.

Of course, as a worldwide physics competition, the test is mostly that kind of bizarre questions, in addition to the solid foundation of students, the most important thing is to do more questions, master some laws, for this country deliberately through the diplomatic department from abroad to collect a lot of past quiz questions, for these test questions to analyze and study in order to achieve twice the result with half the effort.

"Let's try to do this question!"

Professor Lu Hua wrote a question on the blackboard, the question has friction, gravity, support force, spring tension and traction, if a single force is very simple, but together, each force has a relationship with other forces, it becomes a complex force system of motion analysis, all students are frowning and thinking, constantly holding a pen on the paper to write.

Liu Lang glanced at it, and then pouted.

"It's too easy, isn't it?"

This problem involves Newton's laws, as well as the relevant knowledge of tension, friction and spring coefficients, which is somewhat complicated, but it is essentially high school physics, and the difficulty is only to carefully separate the various forces, and then carry out vector superposition, the process will be very complicated, and you will make mistakes if you are not careful.

However, for Liu Lang, a brain comparable to a computer, in his eyes, the vectors generated by all forces are even more obvious than the lice on the bald head, and it is simply a question that can be answered with a little thought, which is also a difficult problem?

Well, Liu Lang came up with the final result in just over twenty seconds, he secretly looked at the students behind him, or frowned or shook his head, only the students of the junior class wrote quickly on the paper, obviously this question is still not very difficult for the students of these junior classes.

Five minutes later, Professor Lu Hua stepped down from the podium and briefly looked at the students' answers.

"Well, the students in the junior class are still learning solidly, and in comparison, these students who are transferred from the following cities are even worse!"

Professor Lu thought to himself, this is also normal, after all, the junior class has experienced university studies, and the height is much higher than those students, even if it is the same high school knowledge, they will have a more solid mastery.

"Liu Lang, did you do it?"

Professor Lu read all the students' answers before coming to Liu Lang's side.

"Here's the answer!"

Other people's paper is densely packed with formulas and calculations, but Liu Lang's paper has only one number.

"What?"

Professor Lu was stunned, the answer was completely correct!

"Liu Lang, how did you figure it out?"

Professor Lu immediately asked.

"I just thought about it for a while! This is all high school knowledge, not that difficult!"

Liu Lang replied casually.

"Oh, I forgot, Liu Lang's intelligence is outstanding, he can take the national top prize, and the knowledge of high school must be very solid, this question is not difficult, and there is no problem for him to do it. ”

Professor Lu thought in his heart and didn't ask any more questions.

"Liu Lang, your answer is correct, but you can't write it like this to participate in the competition, and you have to write down the analysis process to be completely correct. ”

Lu Hua touched Liu Lang's head and said.

"Alright, I'll tell you about it!"

Lu Hua talked about every knowledge point of this question on the blackboard, and he explained it in simple terms, and his ability to lecture alone was much higher than that of ordinary physics teachers.

"Okay, let's do this question again!"

Because the training time is very tight, Professor Lu Hua is to practice with questions, and he wants to fully explain the types of questions he sees in the fastest time.

This question is another type of question, which is about the action of electric charges, two positive charges and four electrons moving in a circle, which is much more difficult than the previous question.

This question is also simple for Liu Lang, the difficulty is the force of different electric fields, in addition to the changing circumferential speed, the answer was obtained in less than 20 seconds, and Liu Lang completed it with a few simple strokes on the paper.

"Liu Lang, are you done writing?"

This time, Lu Hua stared at Liu Lang, and when he saw him simply write a few times, put down the pen and immediately asked.

"Professor Lu, take a look!"

Liu Lang handed the note to the other party.

There are only four formulas on the note, and then the answer is given directly, the answer is correct, and the four formulas are also the knowledge points in the question.

"This .........!"

Lu Hua glanced at Liu Lang, and was really full of emotion in his heart: this Liu Lang's head is really incomparable to others, even the students in the junior class are too far behind him, and he calculated this question in less than a minute, and it is correct, that is, this process is not like the answers written by students, but like my preparation notes, the school said that he was just going through the motions to let him participate in the competition, I think as long as he is serious, other students can't compare to him at all!

At this time, Lu Hua is also quite a pity, if this Liu Lang goes to the Department of Physics to study with him, I am afraid that the country will have a world-renowned physicist in the future, but it is a pity!

Lu Hua was right, Liu Lang's IQ is really against the sky, as long as he has learned knowledge, no matter how it changes, it is useless in his eyes, of course, if there is knowledge in the question that he doesn't know, he can't answer it either.

The time of a class is one and a half hours, Lu Hua taught seven questions, each question is a different question type, involving buoyancy, electricity and many other aspects of knowledge, only two students in the class answered all the students in the junior class, of course, this did not count Liu Lang in it, because Lu Hua secretly calculated for Liu Lang, and he only took two minutes to write out the answers to these six questions.

Correct, correct, all correct, although the difficulty of these questions is only average, Lu Hua is sure that even the more difficult questions, as long as they do not exceed the scope of high school physics, are "floating clouds" in Liu Lang's eyes.

Liu Lang's "toughness" made Professor Lu a little helpless, Liu Lang should not come to participate in the training of the juvenile class, but should go to the youth class.

"No, I have to report to the above when I go back, Liu Lang is a waste of his time in the juvenile class!"

"Okay, that's all for today's lesson, let's go and rest, there is still a class in the afternoon, and you have to come on time when the time comes!"

Hearing Professor Lu's reminder from class, everyone breathed a sigh of relief, and then leaned there and rubbed their heads, although this is not manual labor, but the high-intensity thinking made them feel extremely tired, which is more tiring than doing half a day's work, but what makes them feel incomprehensible is Liu Lang's performance, the slowest person only took half a minute to make the question, and the students who questioned him at the beginning are now convinced, people's IQ is to throw you ten streets, if you don't accept it, you can't do it!

The students left the classroom in a huff, Liu Lang did not leave, but raised his head and said to Professor Lu: "Professor Lu, can you show me the most difficult topic there?"

"Oh, Liu Lang, what are you going to do?"

Lu Hua asked as he cleaned up.

"This topic is too simple, I'll see how difficult the most difficult topic is, if it's also very simple, I won't come tomorrow, I still have a lot of classes to attend!"

"Hehe, I was about to tell the above about you, but you brought it up first, okay, this is collected by our country, the questions of the foreign junior group physics competition in recent years, I think these questions are the most difficult, you take a look, if you think it's okay, you won't have to take my class tomorrow." ”

Lu Hua took out a scroll, drew a few strokes on it and handed it to Liu Lang.