Alone in the huge office, Wang Yufei would be stunned.

Still a little bit unaccustomed to it.

Han Xu was dissatisfied with Wang Yufei's honesty and lack of desire, but at this moment, he could show off the Buddhist side of this child. Buddhism is about taking things as they come, and taking them as they come. Since Han Qian gave him two math problem books

, then let’s take a look first.

There is only one problem. After another day, Wang Yufei seems to be reading faster.

How fast?

In fact, it’s not that fast, and it’s still incomparable to the quantum wave speed reading method. If you need to describe, Wang Yufei’s reading method can be described as the focus photo reading method. Blink your eyes, and the content of this side will be remembered in your mind.

, and even includes the thinking process of drawing inferences from one instance to another.

Wang Yufei, who was reading a book, didn't feel anything was wrong, but if there were outsiders around at this time, he would feel confused.

Although I turned the pages of the book very carefully, I immediately turned to the next page at a glance, while my eyes were blinking rapidly, which gave people a somewhat strange feeling.

Fortunately, the teacher hasn't come yet, otherwise he would most likely think that there is something wrong with the child's head.

In fact, Wang Yufei did feel that there seemed to be something wrong with his brain.

After flipping through the two math problem books, many graphics and sequence sets appeared in his mind completely uncontrollably.

From simple planes to more complex three-dimensional figures, points follow points, points follow surfaces, points follow space... In the end, countless points form various irregular and constantly moving objects, and countless formulas are born from this.

"Huh? Who are you? What are you doing here?"

While Wang Yufei's brain was still popping up various models and formulas, a middle-aged man with a Mediterranean development trend opened the door and walked into the office.

The image of the man looked somewhat similar to Principal Liao of his alma mater, which made Wang Yufei feel full of intimacy. He quickly stood up and replied: "Hello, teacher, my name is Wang Yufei, and Aunt Han asked me to wait here.

her."

"Oh, Han Qian? Which class are you in?" the man asked, touching his forehead.

"I'm in the third grade." Wang Yufei thought for a while and replied.

The alma mater in Daowang Village has one class for each grade, so it is naturally not as detailed as schools in the city.

"I know you are in the third grade. May I ask which class you are in?" the middle-aged man asked seriously.

"There is only one class for third grade, teacher." Wang Yufei answered honestly.

"Which school are you talking about?"

"Daowang Village Primary School."

"To Wangcun Primary School?"

"yes!"

…

The middle-aged man touched his forehead again and waved his hand at Wang Yufei in confusion: "Okay, you can sit down and wait for Teacher Han."

Then he sat at the desk opposite: "Hey, where is my book?"

"Teacher, are you talking about these two exercise books?" Wang Yufei asked as he picked up the two books that Han Qian had just given him to pass the time.

"Huh? Do you understand?" the middle-aged man asked in surprise.

"It seems quite simple?" Wang Yufei replied tentatively.

He really thought it was quite simple, and many of the questions were basic. If there was something he didn't want to understand, it was probably some knowledge points extended from these questions.

Some of these very open questions can be solved using a variety of methods in a two-dimensional environment. But once introduced to three dimensions, from surface to volume, it will be many times more complicated. But even so, Wang Yufei feels that he can solve it.

.

And Wang Yufei didn't have a correct understanding of his abilities at this time.

For example, at this time, he felt that since he could solve these problems after reading them once, of course they should be quite simple.

"It's quite simple?" Wang Yufei's words almost made the middle-aged man opposite him laugh.

For Han, who has taught mathematics for more than 20 years, he certainly has his own judgment on whether a math problem is simple or not.

The two books written by Wang Yufei are the latest high school math Olympiad plane geometry intensive training question sets, which are naturally extremely difficult.

The reason why No. 1 Middle School in the provincial capital wanted to recruit Lao Han was not only because of his rich teaching experience, but also because of his ability to cultivate young students for the Mathematical Olympiad.

Lao Han was an outstanding coach in the Mathematical Olympiad Provincial Team, and he trained several national Olympiad gold medal winners. Winning high school Mathematical Olympiad awards often allows children with expertise in this area to recruit themselves, increasing the school's admission rate to prestigious schools.

.

"Yes, it's quite simple. Teacher, do you still need to learn such a simple question in high school? You can figure out the answer just by thinking about it in your mind." Wang Yufei asked curiously.

"That's right, Han Qian and I have the same surname. My name is Han Wenle. I am the math teacher at the school. Since you think these questions are very simple, why don't we discuss them today?" Han Wenle said, pinching the corners of his mouth.

.

Under normal circumstances, Old Han would not be so idle, but who made Wang Yufei's attitude anger him today?

Of course he can solve the problems in the two problem books. But he also needs to calculate and find ideas.

This kid just came here this morning. After casually flipping through the question book, he dared to say that he could get the answer just by thinking about it? How dare he learn such a simple thing in high school? This is to press his face to the ground and rub it!

"Okay, Teacher Han!" Wang Yufei nodded honestly. He had not yet learned to read words and expressions, and he did not notice the murderous look in Old Han's forced smile.

"Let's do this. I'll give you a test question and you can solve it."

After saying that, without giving Wang Yufei a chance to react, Han Wenle casually pulled out a piece of paper from his desk, picked up a pen and wrote down a plane geometry problem that had stumped him before, and then handed it over.

.

"In △abc, ab is greater than ac, ad bisects bc, e is on ad, ef cuts the circumcircle of △abd and f, eg cuts the circumcircle of △acd and g, the straight line cf intersects bg and point j, and passes through point j to make bc

Parallel lines intersect fd, ad, gd and h, k, i respectively. Prove: hk=ji."

Wang Yufei glanced at the question, and lines and dots already appeared in his mind.

"Teacher Han's question is also very simple. If you make an extension line of bf and cg, you will find that both lines will intersect ad at the same point. If you want to prove it, you can do this..."

As he spoke, Wang Yufei began to draw a sketch on the scrap paper, and then began to write out the argument process. Two minutes later, Wang Yufei handed the manuscript paper to Han Wenle.

Old Han received the answer to the problem from Wang Yufei in surprise and was stunned for a moment.

Of course, it’s not that Wang Yufei’s solution is not good, it’s that it’s too good, and the method of solving the problem is very unique. Not only did he draw a complete graph, but he also proved the wire harness theorem...

This directly made the answer seem a bit cumbersome, but Lao Han had to admit that there was no mistake at all.

Wait, this problem-solving method seems familiar?

"You were the one who tutored Teacher Han's daughter on math problems yesterday?" Han Wenle asked, patting his head.

"Well, yes, Teacher Han!"

"Are you a primary school student?"
Chapter completed!