Gu Xu found a place on the sidewalk close to the railing.

On this side of the railing is the sidewalk, which is wider and has some shops on the opposite side, and behind the railing is the driveway.

He spread out the folding table and hung the whiteboard that he had prepared long ago on the stainless steel railing by the square.

The whiteboard reads: guide high school and junior high school math problems, five large questions, three middle questions, two small questions, and the price of special questions is negotiable.

There was a stone bench in front of the railing, and he placed the small table in front of the stone bench, and the field was arranged.

Gu Xu sat at the table, looking calm.

He looked at Lan Ruosi: "Little porridge, come and sit!" ”

Lan Ruosi felt uncomfortable, as if everyone was looking at her.

Regarding her reaction, Gu Xu was very calm.

His little daughter-in-law was afraid of life, and he already knew about it when the two first met.

Now, with her facing so many people, she does panic.

"If you don't want to sit with me, sit on the little stool next to me!"

Before Gu Xu came, he didn't expect that there would be benches here.

He brought several stools, two for himself and some for the person who came to the problem to sit on.

Gu Xu opened a stool and motioned to her: "Little porridge, come, I'll accompany you, don't be afraid!" ”

Don't be afraid!

Lan Ruosi repeated in her heart......

Oh, yes!

Gu Xu Zai, what am I afraid of?

She suddenly seemed to have a little more courage.

She sat on a small stool next to Gu Xu.

"Walk by, don't miss it, come and see!" Gu Xu began to shout.

Lan Ruosi was stunned, her face turned red, and her heart beat faster, "Why are you still shouting?" ”

She didn't expect it at all.

"Don't be afraid!" Gu Xu comforted again, "To do business, of course, you have to shout, so that people will stop." ”

Lan Ruosi subconsciously became more nervous, she really didn't know what would happen in the next second.

While the two were talking, a gray-haired old man with a little girl of seven or eight years old walked towards them.

"Brother, do you know how to do this question?" The little girl's voice is immature and cute.

Gu Xu smiled: "What's the question?" Show your brother? ”

The little girl pointed to the question in the homework book: "This! ”

"Well, it's so easy! Nine square grid, there is a formula, wear nine shoes one, right three left seven, two four shoulders, eight six for the foot, five in the center. ”

The little girl looked confused.

"Brother will show you, and you will know." Gu Xu quickly wrote down the mantra and numbers on it, and explained it to the little girl.

The little girl looked delighted: "Thank you, brother, I understand." ”

Seeing his granddaughter's happy appearance, the old man was also very happy: "Young man, how much is it?" ”

"Grandpa, it's not much, a dollar!"

The old man took out a dollar and gave it to Gu Xu.

"Goodbye, brother!" The little girl said goodbye to Gu Xu happily.

Gu Xu looked at Lan Ruosi proudly: "How is it?" Simple! ”

Lan Ruosi had a complicated expression on her face, and she had mixed feelings in her heart: disbelief, doubt, joy, and surprise......

After a while, another father and son came over, both father and son were a little fat, and they looked like they were carved out of a mold.

The father glared at his son: "Why are you so stupid, you can't answer elementary school questions." ”

The son was not convinced: "You are embarrassed to say me, you are not unconvinced!" ”

The father shouted: "I can't, I can find someone to teach you, if someone teaches you, you still can't, it's stupid!" ”

The two walked to Gu Xu's stall as they spoke.

The son took out a study book from his school bag, flipped to the middle, pointed to a question, but did not speak.

The father glared at him again: "You kid, why are you so rude, you can't speak!" ”

Gu Xu said with a smile: "Uncle, don't worry, he is still young." ”

The son's expression was much soothed, and he turned his face to glare at his father, with a look of "Look, everyone knows that I am still young." ”

Gu Xu smiled silently: "Little brother, don't worry, my brother will teach you ......"

Gu Xu looked at the question and read it out: "The snail climbs up along the manhole, climbs up 9 decimeters during the day, slides down 7 decimeters at night, and reaches the ground on the 5th day, how deep is this manhole?" ”

Lan Ruosi blurted out: "17 meters!" ”

Gu Xu immediately turned his head to look at her: "Or, you come?" ”

Lan Ruosi hurriedly shook his head, his head like a rattle.

"You said the answer so quickly, and if you don't talk about it, isn't it a bit burying your talent."

"I, I'm ......" Lan Ruosi didn't speak.

Lan Ruosi did this question when she was in elementary school, and she was very impressed.

It's just that, at that time, her snail climbed relatively slowly, climbing three meters during the day and sliding two meters at night.

Unexpectedly, after so many years, they are still doing this question.

The method is the same for both questions.

The difference is that now this snail can climb faster than the one back then, and can climb 9 meters.

Gu Xu knew that Lan Ruosi was interested.

Speaking in front of a top student, her thinking will naturally be mobilized.

It's like, singing in front of a singer, painting in front of a painter, acting in front of an actor, their cells all beat unnaturally.

But she still has some fear.

The more times like this, the more you can't force her, you can only let her slowly open her heart.

To get a woman's heart, you must not force her.

You can only boil the frog in warm water, so that she can slowly unload her guard against herself, and slowly give her heart to you unconsciously.

In the end, when she herself gave her heart to you, she herself didn't know.

Love, I don't know what to do, I love deeply!

Gu Xu came back to his senses and continued to analyze the question: "Let's analyze the snail first, it climbed 9 decimeters on the first day and 7 decimeters at night, so where did it start climbing the next day?" ”

The little boy replied: "9 minus 7 equals 2, climb two meters a day, climb for five days, of course 10 meters." ”

The father couldn't help it, and scolded: "Are you stupid, or deaf, that sister just now said 17 meters, and you still said 10 meters." ”

The more the father spoke, the more angry he became, and poked his son in the head fiercely: "Why did I give birth to your stupid son." ”

The son pouted and glared at his father, wanting to say something, but he didn't dare to say more.

Gu Xu said with a smile: "Uncle, don't get excited, this question is deliberately digging a pit, and children are easy to fall into misunderstandings." Little brother, you see. ”

Gu Xu drew ten bars with a pencil on the paper and took out an eraser as a snail.

"The eraser is the snail, and the snail starts crawling from here.

You take a closer look, if, according to your train of thought, the well is only 10 meters. On the first day, I climbed two meters, and on the second day, I climbed nine meters, and I went directly to the wellhead. ”

The little boy scratched his head, he looked at Gu Xu, he felt that what Gu Xu said was right, but he felt that what he said was right.

Lan Ruosi watched from the sidelines, and sighed in his heart, Gu Xu has a good image of lecturing, and he is so patient.

In the future, when he teaches his son, he will definitely be a good father too!

Well?

Lan Ruosi's face turned red, how could I suddenly have this thought!

But......

Will I marry Gu Xu in the future?

I......

She subconsciously shook her head, not daring to think about it!

She came back to her senses and continued to look at Gu Xu.