"It's fine!"

Yi Ruyan left, which made Li Changsheng a little reluctant, but he didn't show it.

The old man greeted a few more words, then turned his head to look at Yi Ruyan and said, "I studied it last night, how about you take a look at this question I came up with?"

Then the old man took out a piece of paper, Yi Ruyan looked at it excitedly, and Li Changsheng also looked at it a little curiously.

This topic is somewhat interesting, but it just turns several functions upside down, and the images of the x-axis and y-axis are also distorted, and there is a trap that is easy for people to miscalculate and fall into the wrong place.

I saw the previous beauty Yi Ruyan took a piece of paper, stretched out her beautiful jade hand and held a pen, and was looking for the correct answer to this question.

Li Changsheng only remembered to check Yi Ruyan's information card at this time.

[Name: Yi Ruyan]

[Figure: .....]

[Contact number: 1575xxxx542]

[Basic subjects: Chinese Level 2, Mathematics Level 2, English Level 2, Physics Level 1.8, Chemistry Level 1, Biology Level 2.5]

............

Li Changsheng was stunned for a moment, this data card can still show Yi Ruyan's figure? No wonder he said so soft before, it turns out that his figure is so good, this must at least be the extent that the car drives to the point of 150 miles and sticks out of the window, right?

There is even a contact number 1575xxxx542.

However, judging from the data, her ability is also quite good, except for chemistry, which is slightly worse, and other subjects are maintained at level 2.

Li Changsheng retracted his mind and refocused his gaze on the paper on which Yi Ruyan had solved this question, and found that her answer had entered the stage of the final trap.

She really fell into the trap for the sake of speed.

Seeing this, Yi Daoping showed a smile on his face, he raised the teacup in his hand and took a sip of tea gently, just wanted to put down the teacup, and suddenly found that the young man in front of him who was injured by his granddaughter also had a smile on the corner of his mouth.

It seems that he also found out that his granddaughter did something wrong?

Hiss~

It can't be, right?

"Little brother, look at your appearance, otherwise you would do this question?"

The old man asked.

"A little bit. Li Changsheng nodded, and randomly pointed to the big characters [Fuhai City Ninth School District School Uniform] printed on his body and said, "After all, I am still a student." ”

"Hahaha, student, student, student. What a fun lad. The old man laughed and repeated the repetition three times, as if he was very happy.

"I got the answer. Yi Ruyan put down the pen in her hand, revealing a roll of her beautiful words.

The old man pointed to this piece of paper and asked Li Changsheng, "Since you can do this question, then do you see if Ru Yan is doing it right?"

A trace of pride appeared on Yi Ruyan's face, she is still relatively confident in her mathematical ability, she participated in various Olympiads when she was a child, won a lot of first places, and now she has grown up to study abroad, and her strength is unimaginably strong.

And the guy in front of her was obviously just a student, and he was still in the ninth school district, which made a trace of disdain flash in her eyes. You must know that the current school district ranking also represents the ranking of the overall performance of students in Fuhai City, so she already thinks in her heart that the students in the ninth school district are naturally inferior to the students in the first school district.

With his mathematical ability, it would have been impossible to solve it.

"You don't need it, do you?"

Li Changsheng excused himself.

"You're welcome, little brother, just give it a try. The old man smiled at the corner of his mouth.

Yi Ruyan's face showed her pride in her mathematical strength, and she felt that Li Changsheng must not be able to do it.

"Grandpa, this question is your question, and even I can barely answer it. He was just a student, so how could he possibly answer such a profound question, let alone judge whether what I was doing was right or wrong. ”

"Oh, young lady actually looks down on me so much?"

Li Changsheng originally wanted to save a little face for Yi Ruyan, but now it seems that he has to make a move!

"My sister doesn't look down on you, but this question is really level. I'm afraid you won't be able to answer!"

Yi Ruyan looked at Li Changsheng with a pair of big watery eyes and said.

"Little brother, don't you know, Ru Yan is a few years older than you after all, and she has studied abroad and further her studies. This ability is above you, and it is purely normal, and there is absolutely no intention to look down on you in the slightest!"

The old man opened his mouth to defend his granddaughter.

"Hahaha, so be it. I, Li Changsheng, will make a bet with the two of you today. Li Changsheng stood up, looked at Yi Ruyan with a smile and said.

"What kind of bet does the little brother want to make?" asked the old man curiously.

"What do you want to bet on?" Yi Ruyan's big eyes also revealed a hint of curiosity.

"Just bet on that. If I solve it, then Ru Yan, you have to admit that your mathematical ability is not as good as mine. If I don't answer it, then I'll let you punish me!" Li Changsheng said.

Yi Ruyan looked at Li Changsheng's handsome face with a hint of confidence, as if she had already been confident about a question, and she couldn't help but feel a little weak in her heart, could it be that this little student could really solve such a difficult question?

"Ru Yan, what do you think?" the old man asked.

"Okay, I'll bet with you today, if you lose, then you can clean the toilet for me for a day today. ”

Yi Ruyan stood up and made this bet with Li Changsheng.

After Li Changsheng saw that Yi Ruyan had agreed to his gambling contract, he stood up and took a new piece of paper, and he didn't even need to read the question, so he picked up the pen and began to answer.

Yi Ruyan and Yi Daoping watched Li Changsheng answer with wide eyes.

I saw Li Changsheng draw lightly with his hand, and a standard circle appeared on the white paper, and then began to assume the x-axis and y-axis on this circle as auxiliary lines.

"This little brother is so terrible at drawing!" the old man pointed to the circle drawn by Li Changsheng and said in shock, "With just one hand, this circle is the same as a mechanical print." ”

Yi Ruyan was also frightened by Li Changshenglu's hand.

Just when she was staring at Li Changsheng, Li Changsheng suddenly raised her head and revealed a handsome face that fascinated thousands of girls, which made Yi Ruyan's heart crisp.

"Little sister, you have to see my answer clearly. That's where you went wrong. Li Changsheng smiled at Yi Ruyan, and then continued to answer.

Yi Ruyan's heart was beating wildly when she was seen by Li Changsheng's handsome face, her pretty face was flushed, she couldn't hold back her mind, watched him answer, and followed his train of thought, and sure enough, she found that she had just been greedy and fell into the trap. A pair of beautiful eyes swept back and forth on Li Changsheng's body, and he felt that he really had some ability.

When the old man on the side saw Li Changsheng's answer, he sighed again and again:

"Oops~"

"Good! good!"

The old man touched the beard on his chin, looked up to the sky and laughed:

"Hahaha, God bless me Huaxia, I didn't expect that I Yidaoping would meet such a talented teenager in my life, it's really my honor!"

"At such a young age, with only the knowledge taught in school, there is such a high level of mathematical attainment! I am afraid that my future achievements may not be inferior to Einstein!"

"Genius!

The old man is like a treasure.

Looking at Li Changsheng who was answering, the old man cherished and loved talents in his heart, and he thought that if Li Changsheng continued to go back to study in school, he was afraid that it would be a waste of his such a demonic talent.

He felt that the best solution was to teach him himself.