Qiao Yu was afraid of disturbing Lin Xizhi's study, so she left.

Not long after Qiao Yu left, Lin Xizhi heard a knock on the door again, she thought it was Qiao Yu, and hurriedly got up to open the door.

Seeing Xu Ruoguang standing at the door, Lin Xizhi froze for a moment: "Brother Xiao Wu."

"Chen Qingyu finished the math paper for you?"

Lin Xizhi felt that Xu Ruoguang's words were strange, but she couldn't say what was strange: "Student Chen is finished."

Hearing her words, Xu Ruoguang snorted coldly: "Oh."

He responded, said nothing, turned around and left.

Lin Xizhi looked at his back, blinked, and hesitated for a while: "But I still have a big question that I don't understand, can you tell me more about brother Xiao Wu?"

Xu Ruoguang just pushed open the door, and when he heard her words, he looked back at her: "Come here with the paper."

"Oh oh ok."

Lin Xizhi smiled, and suddenly felt that Xu Ruoguang didn't seem to be so difficult to coax.

She took out the math papers and notebook from her schoolbag, and then walked to Xu Ruoguang's room.

Xu Ruoguang's door was not closed tightly. Lin Xizhi knocked on the door and heard him say "come in", so she pushed open the door and walked in.

Xu Zhouyuan and Yun Su often traveled, and Xu Ruoguang lived in the Lin family for half of the time after junior high school.

In this room of the Lin family, a lot of his personal belongings were added.

A basketball hoop is hung beside the desk, and a basketball is placed on the bay window.

The desk is clean and tidy, and there are a lot of programming books on it.

This was the first time that Lin Xizhi had looked at Xu Ruoguang's room so carefully. It was different from the boys she imagined, but she seemed to think that Xu Ruoguang's room should be like this.

After Xu Ruoguang answered the phone, he looked back at Lin Xizhi, who was already sitting obediently at the desk, raised his eyebrows slightly, threw his phone and lifted his legs out of the room: "Wait."

He said, and the man went out, but soon, he came back with an extra chair in his hand.

Lin Xi knew this and then reacted, and he sat on Xu Ruoguang's book chair.

Xu Ruoguang put the chair directly beside her, "Paper."

He was very direct. After taking the paper, he first read her problem-solving ideas, and it also wrote Chen Qingyu's problem-solving ideas.

Xu Ruoguang snorted coldly: "Chen Qingyu himself is half-hearted, you ask him to tutor mathematics, are you not afraid that the more you make up, the worse it will be?"

Lin Xi was embarrassed: "This question is too difficult, and other topics, classmate Chen explained very well."

Xu Ruoguang couldn't hear her saying that Chen Qingyue spoke well: "You have been tutoring him for more than a month, but you just passed the exam, so that's a good lesson?"

Lin Xizhi pursed his lips and felt that this was not Chen Qingyu's problem: "I have always been bad at math."

Xu Ruoguang looked down at her: "That's because you didn't find a good teacher."

He pulled the corner of his mouth and took out a pencil from the pen holder on the side: "There is a simple way to solve the problem, but you have to use such a complicated one. It's strange that he can explain it to you."

Lin Xizhi found that Xu Ruoguang didn't seem to like Chen Qingyu very much, so she decided not to speak for Chen Qingyu anymore, "Then how to solve it, brother Xiao Wu."

She didn't speak for Chen Qingyu anymore, Xu Ruoguang finally felt a little more relaxed, "Read the question first."

"Oh oh."

I have to say that Xu Ruoguang's talent in mathematics is really admirable.

It was obviously the same problem, but when it came to him, he could easily find the easiest way to solve the problem.

In addition, his memory is very good, and while explaining, he can tell her what book this is and which example questions have appeared before. Every step is simple, direct, and clear.

In just 20 minutes, Lin Xizhi understood the whole problem-solving idea, and was shocked by Xu Ruoguang's understanding of the book example.

Xu Ruoguang never recites theorems, because he can deduce them by himself.

Lin Xizhi also discovered that the learning methods of geniuses are different from those of ordinary people like them.

But Xu Ruoguang explained it in detail and she even understood a little why Xu Ruoguang started from a different angle than Chen Qingyu's.

"Understood?"

Lin Xizhi's head was suddenly tapped by the pen, she glanced at Xu Ruoguang beside her, and nodded: "Understood."

Xu Ruoguang said, raised his hand and threw an English book in front of her: "Reciprocity, help me memorize the words."

Lin Xizhi blinked, a little puzzled: "How can I help you get worded, Brother Little Five?"

Isn't it the only thing you can do to memorize words?

Xu Ruoguang snorted: "Isn't your English score very good? How do you usually memorize words?"

Only then did Lin Xi know what Xu Ruoguang meant, and took the English book he threw on the table.

Xu Ruoguang's English book is just like the new book, there are no notes on it, not even the name.

Lin Xizhi turned to the last word, and was embarrassed to write, "I recite it according to the phonetic alphabet."

Xu Ruoguang's memory can be said to be unforgettable, and his spoken English is also very good, but he doesn't like to memorize words.

"Then do it your way."

Lin Xizhi pursed his lips: "Then where did you memorize your words?"

"Never back."

He leaned back, took a pen and turned it in his hand.

Lin Xi was embarrassed, took his math notebook, and turned to the last page: "I will help you memorize twenty words every day from now on?"

"Can."

As Lin Xizhi spoke, she copied down twenty words. She left a little bit of each phonetic symbol open. After copying, she put the notebook in front of Xu Ruoguang: "You can read these words, brother Xiaowu?"

Xu Ruoguang glanced at the English book: "Well."

"Then you can record it according to what I have sorted out for you. Soon, there are four phonetic symbols for a word."

Xu Ruoguang glanced at her, "I see, you can read the book yourself again, and I will read the words for ten minutes."

"Yes."

Lin Xi knew that Xu Ruoguang was still working very hard in private, but it was not the same as in school.

She reviewed the test paper again, and after reading it, Lin Xizhi tilted her head to look at Xu Ruoguang.

Seeing her looking over, Xu Ruoguang pushed the English book directly in front of her: "After you've memorized it, you can do a random check."

Lin Xizhi was shocked. She could memorize twenty words in fifteen minutes at the fastest. She couldn't guarantee to memorize them all. Can Xu Ruoguang finish memorizing them in less than ten minutes?

She looked at Xu Ruoguang and blinked: "Then I'll do a random check."

"Ok."

Xu Ruoguang turned the pen and looked up at her.

ten minutes later.

"Little brother, in fact, you usually go to school, record the words and listen to them, and you can memorize them all on the way."

Such a good memory, so envious.

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