"Your speed is much faster than I expected. Not bad."

Mr. Gu nodded slightly: "What surprises me even more is that you all solved the third question."

"Although the steps and ideas of your answers are completely different, the final answer is still the same. Whose answer is this?"

As Mr. Gu spoke, he took out one of the answer sheets.

"Mine." Lin Yi glanced at it and said.

"Well, your problem-solving ideas are relatively straightforward and neat. You used twenty-eight formulas to derive the third question, just like a man." Mr. Gu laughed.

"Mathematics is like fighting a war. You take a knife and slash forward until you break through the siege and find the answer."

Then Mr. Gu looked at another one: "This, your name is Liu Luran, right?"

"Yeah." Liu Luran nodded slightly.

"Your problem-solving ideas are relatively more complicated. Although it is not wrong, in terms of efficiency, it is a bit slower."

"You used a total of forty-two formulas, including formulas that contrasted inequalities with probabilities. This is a bit superfluous."

After Mr. Gu finished speaking, he put two answer sheets on the table: "What I want to tell you is about how to achieve better results in the Olympiad with a good foundation."

"The first is to be fast, and the second is to be accurate."

"Fast means that your problem-solving speed must be fast, and the principle is that your problem-solving ideas must be correct."

"Generally speaking, the direction of logical thinking emphasized by Olympiad questions is an axis in the opposite direction. You need to find the most critical one or several problem-solving points from it, and use the method of breaking through the surface to find the final answer."

Mr. Gu sat there and talked eloquently, telling all about his many years of Olympiad training experience and some common Olympiad problem-solving techniques. He also found a few of the most representative questions for explanation and analysis.

Lin Yi and Liu Luran were listening there.

This lecture lasted for two hours.

Mr. Gu took a sip of water and moistened his throat: "I have said everything that needs to be said, because time is tight and there is no extra time to say it to you a second time."

"As for how much you can listen to, that is your own business."

After Mr. Gu finished speaking, Mr. Liu nodded at this time and looked at Lu Yifei and Liu Luran: "When you go back later, think carefully about what you heard today in your head."

"Yes, in addition, you can go out and play now. I want to play a few more games with your teacher." After Mr. Gu finished speaking, he started to place the chess pieces involuntarily. Old Liu shook his head:

"You have to win before I give up."

"That's right, I will definitely beat you in this game!" Mr. Gu looked confident.

"You guys go out and have fun. You can go upstairs and have a look. If you want to go back, just go back. You don't need to wait for me. I don't know when we will go down tonight." Old Liu Tou had a rare gentle look on his face.

Lin Yi and Liu Luran had no intention of forcing themselves to stay here. After thanking them, they left the room.

When the two of them left, Old Liu Tou looked at Mr. Gu: "Is it Miaozi?"

"Yes." Mr. Gu nodded.

"Which seedling is better?" Old Liu Tou continued to ask.

Mr. Gu glanced at him: "The one named Lin Yi."

"Why?" Old Liu Tou looked curious, wanting to know what his old friend said about Lin Yi.

"The thoughts are very profound." After holding it in for a long time, Mr. Gu choked out five words.

Seeing that Old Liu Tou was a little puzzled, he picked up the answer sheet that had just been placed on the table and handed it directly to Old Liu Tou: "See for yourself."

Old Liu took it and looked at it twice. His eyes were stunned at first and shocked at the end.

Mr. Gu rolled his eyes: "I don't know where you dug the seeds from. Have you seen the problem-solving process of the last problem? The problem-solving process named Lin Yi is only the best problem-solving process I can think of.

The difference is one formula away.”

"If he hadn't written this problem in advance, he would be a complete mathematical genius."

After hearing what Mr. Gu said, Old Liu Tou laughed, but said nothing more and started playing chess.

…

"Where are you going?" After leaving the room, Liu Luran looked at Lin Yi and asked.

"Of course I'm going back to sleep, otherwise why would I stay here?"

Lin Yi's tone was indifferent. In fact, Lin Yi didn't care at all about the Olympiad.

The reason why I participate in the competition is to get good results, and then go home and show it to my mother. At least it is something that my mother can show off and brag about.

Zheng Jiayun has been an excellent teacher all his life. Because Lin Yi's grades were so bad, there were many people talking behind his back.

My own son can’t teach well in studies, so why should he be an excellent teacher?

Every time Zheng Jiayun heard this, although he couldn't tell anything on the surface, Lin also knew that his mother was still very sad deep down.

Lin Yi pressed the elevator button and waited until the elevator came. After getting on the elevator, to his surprise, Liu Luran pressed the button for the 23rd floor first.

"You're already here, just go up and take a look before leaving, just think you're relaxed." Liu Luran's tone was a little cold, and no emotion could be heard.

In fact, when she said this, Liu Luran's heart was beating wildly, but she covered it up very well.

Liu Luran didn't understand why her head was so hot just now and she made such a choice.

Seeing that Liu Luran had already pressed the elevator button, Lin Yi said nothing more.

When the elevator reached the twenty-third floor, the door opened and the two got off the elevator.

"I have been to this place once before. You can see most of the river city from there. It feels very good especially at night when all the street lights are on."

Liu Luran walked beside Lin Yi. Because the atmosphere was a bit dull, she unconsciously found some topics to talk about.

The two walked all the way to the end, and Liu Luran opened the door and walked into the lobby on the 23rd floor.

It is now past nine o'clock in the evening, almost ten o'clock.

But there are still many people in the hall.

“This place is usually rented out to host banquets and parties, and people staying in the hotel can also come here for sightseeing.”

As Liu Luran spoke, she stepped on the marble floor and walked forward.

She stood in front of the huge floor-to-ceiling window, looking at the busy traffic under the glass from a distance through the glass.

"Would you like a place like this? Looking down from a high place, it feels like the whole world has become very small, like a chessboard." Liu Luran turned her head and looked at Lin Yi beside her.

Through the hall light, Liu Luran saw Lin Yi's angular face.

She suddenly discovered that, at some point, Lin Yi's face gave people a cold feeling like a blade.
Chapter completed!