Gong Yunxi felt that she must have been bewitched, and she was obviously very angry with this presumptuous student, but her body was like a cat by the stove and refused to move, which honestly made people blush.

"I'll give you three questions first, and then I'll do one myself, and if you can do it in fifteen minutes, I'll stay and tutor you well. ”

Gong Yunxi saw that Ye Liuyan quickly took away his hand, and it was not easy to attack, so he immediately began to solemnly put pen to paper and drew a few trigonometric diagrams.

In high school mathematics, trigonometric functions have always been a headache for students, and she deliberately ignored the important premise that Ye Liuyan had not been in school for six years.

Although it is comfortable in this room, Gong Yunxi is arrogant after all, a dignified beautiful student, a returnee doctor, if the first student she teaches can't even get into college, it will be too embarrassing.

Now that she has a million deposits in her account, that amount of make-up fees is not uncommon, and she cares a lot about her perfect resume.

However, with Gong Yunxi's true character as a scholar, he didn't disdain to be perfunctory, and the three function questions were very detailed, and Ye Liuyan also listened attentively.

"Do you understand?" After a while, Gong Yunxi exhaled and asked.

"Hmm. Ye Liuyan nodded.

"Then I'm out of the question. The corners of Gong Yunxi's mouth curled, and he quickly wrote a question on the paper.

This question is very cleverly compiled, and the knowledge points and solution ideas are precisely taken from the essence of the previous three questions, and Gong Yunxi is determined to convince this student to lose.

Unexpectedly, Ye Liuyan just glanced at it, then took a pen and wrote "-2π/3" on the paper, and then there was no movement.

"You're solving the problem, what's the point of writing a random step that doesn't stick to the edge?" Gong Yunxi was angry, this person is too stupid, even if he can't do it, he peeked at the manuscript paper of the three questions next to him, and copied a few starting steps according to the gourd drawing, at least he could pretend to be like it.

"It's not the step, it's the answer. Ye Liuyan chuckled.

Gong Yunxi was stunned for a moment, and then hurriedly subconsciously looked at the question, and after more than ten seconds, her pretty face turned red in an instant, and she raised her head again and glared at Ye Liuyan viciously.

-2π/3, that's right, the last answer to this question is -2π/3!

Is this kid amusing himself again? This is also called not going to school for six years, not going to high school?

The difficulty of this question is on the upper side, even if it is placed in the multiple-choice questions of this year's national college entrance examination mathematics test paper, it is enough, even she, a female doctor who is a Harvard returnee, the beauty champion of the year, it takes more than ten seconds to solve the answer by mental arithmetic, but this kid can see the result at a glance, are you a monster?

Gong Yunxi was embarrassed and angry, and just wanted to scold, but she was suddenly stunned.

That's not right!

This question is made up by himself improvised, even if this kid happened to practice the same question type before, what about the numbers in the question? Could it be a coincidence?

"One more question!" Gong Yunxi thought to herself, and quickly made up another question with a snort.

Exactly the same question, but with a change of algebra, naturally, the answer also changed.

Ye Liuyan still only glanced at it, and then wrote: -3π/7.

Seeing this move, Gong Yunxi was about to suffocate, and her cheeks were hot and uncomfortable.

This time, in order to be prepared, when the question was asked, she secretly solved the answer by the way.

Looking at Ye Liuyan writing the answer directly on the paper again one by one, Gong Yunxi felt that her worldview of a beautiful scholar was about to collapse.

What a monster!!

"You give me an honest explanation, are you a math prodigy, I found out from the trail that my senior sister returned to China, deliberately contacted me to come over, and then demonstrated to me in this way?" Gong Yunxi slanted Danfeng's big eyes, gritted his teeth, and asked this conjecture word by word.

Although this idea is black and bloody, in the eyes of the high-IQ senior, it is logical.

The news of the "school flower and school bully" made the whole country well-known, and the younger students and sisters in the future will definitely be unconvinced!

"You're thinking too much. Ye Liuyan spread his hands and smiled, and said helplessly: "I haven't heard your name before." ”

"You!" Gong Yunxi's eyes were on fire, this kid was angry with himself, right?

"Okay, senior sister, you took my commission, you should take this job seriously, let's get back to business. Ye Liuyan smiled faintly.

Gong Yunxi found herself speechless.

Can this kid not look very old-fashioned, as if he was being vexatious just now, that tone is really annoying.

Gong Yunxi took a few deep breaths and said indignantly: "Okay, then what knowledge do you want to hear?"

"I suggest that I go through the high school courses quickly, of course, the key points of the exam, I am also willing to listen, my goal is to support Yihai University. Ye Liuyan said.

Gong Yunxi has lost his temper, this kid is actually very assertive, and he is determined to be admitted to Yihai University, the first school in the country.

A guy who hasn't been to school for six years vows to take the exam for his alma mater, and he is really not afraid of being laughed to death!

Gong Yunxi didn't bother to care about it in general, so she immediately took the subject of mathematics and pulled up the textbook on the computer to start from scratch.

The speed of her lectures is fast, and her ideas are even more refined to the point of outrageousness, and she is always flying.

From "Collection" to "Solid Geometry", the content that high school teachers were supposed to talk about for half a semester was floated by her in an hour.

But what made Gong Yunxi speechless was that this student didn't call NG the whole time, and he still looked like he had already understood.

I can understand this, and there is no one else.

Halfway through, out of prank and revenge, Gong Yunxi deliberately came up with a question that had not yet involved knowledge points to test Ye Liuyan, but Ye Liuyan really looked confused, and said at a glance: "This question will not be." ”

After entering the role, Gong Yunxiqiao's face quickly blushed again, and she took off her coat and put it on the chair very uncomfortably.

In the past two days, she has wrapped herself very tightly, and there is no such cold in this room, and it is uncomfortable to wear so many clothes. She peeked at Ye Liuyan, worried that this unconscious move would be regarded as some kind of provocation by this kid, but Ye Liuyan didn't even look at her more, which made her very tired.

After three hours of tutoring class, Gong Yunxi was also tired and offered to go back, but at the same time he didn't forget to tell Ye Liuxi to take a look at the textbook.

"I'll come here tomorrow at twelve o'clock, and after that we'll have classes during the day. Gong Yunxi glanced at the dark sky outside the window, and a trace of inexplicable horror flashed in her beautiful eyes.

It took great courage for her to leave the warm and reassuring room and return to the darkness of the night.

Liu Yan offered to let her son send her back, but she refused.

Ye Liuyan was secretly funny, this woman is very strong in her bones.

"Senior sister, lend me your mobile phone to take a look. Before leaving, Ye Liuyan suddenly made a request.

"What are you doing?" Gong Yunxi was very unhappy, this little pervert actually wanted to peep at the content of the teacher's mobile phone.

"It's nothing, I'll try my Bluetooth and it will be fine soon. Ye Liuyan said with a smile.

"Well, hurry up, it's not early, I have to catch the last subway." Gong Yunxi took out her mobile phone from her bag and handed it to him, and at this time, Liu Yan boiled some sesame paste in the living room and beckoned her to drink it.

Gong Yunxi couldn't refuse, so she walked away.

Ye Liuyan turned on the recording function of his mobile phone, and his lips opened slightly......