Chapter 267

When immersed in something, time passes extremely quickly. At 3:00 PM, Xu Qingzhou was dragged out of his room by Wang Nushi, who told him not to just keep scribbling, but to hurry up, take a shower, change his clothes, and go pick up Song Yao.

By this time, the house had been cleaned inside and out, looking even more meticulous than during the New Year.

At 3:30, Xu Qingzhou came out after his shower; Wang Nushi had already gone to buy groceries, and Old Xu was in the study organizing books.

After greeting Old Xu, he also headed out.

At this hour, the sun was just right, sunlight passing through the gaps in the leaves and falling brightly onto the ground. As a breeze blew, the light and shadows swayed gently on the asphalt road.

In August, the hottest time in Rongcheng, it was like a boiler outside. Not only was it hot, but it was also stuffy, to the point that the old men who usually sat under the plane trees to cool off were all hiding at home.

After leaving the Wutong residential area, Xu Qingzhou crossed Wutong East Road and met that beautiful girl at the intersection of Nanlin Road and Beilin Road.

Song Yao had a high ponytail, with small wisps of hair at her temples. Beneath her bangs were exquisite and perfect features. She was dressed simply, in a white T-shirt paired with jeans, stepping in a pair of white sneakers.

"Having one more person at home really makes it livelier."

Read! {

Song Yao's voice was truly pleasant to hear—cool and aloof, carrying the aura of a mature woman, yet soft and sweet when she was shy, making one like her even more.

"Yes, this is a good thing." Zhang Junli nodded.

Song Yao let out a breath. The first thing she did once her hands were free was to pick up her phone to check her makeup. Even before entering the residential area, she confirmed it again, asking Xu Qingzhou: "My makeup hasn't smudged, has it?"

He guessed that Old Xu and his wife were still in a daze: "My son actually managed to get such a good cabbage?!"

"Yes, thank you, Uncle Xu."

Zhang Junli sighed and said with emotion: "Things are progressing quite fast. They're only 19, and they've already reached the point of visiting each other's parents."

After the meal, the task of washing the dishes fell to Xu Qingzhou. When he came out after washing them, he saw Wang Xiaping still chatting with Song Yao.

Xu Qingzhou took out a pen and wrote down a simple prime factorization method for sn on a draft sheet.

"Drive slowly on the way." Wang Xiaping instructed.

"That was because I was hot."

"Mom, this is a gift from Song Yao for you." Xu Qingzhou pointed to the gift box placed on the cabinet at the door.

Staying at home until 8:00 PM, Song Yao declined Wang Nushi's request for her to stay, stuffed Er Miao into the "prison" with Xu Qingzhou, clutched a large red envelope, and prepared to go home.

"Then, I'll talk to you for a while longer."

Song Yao glanced at the tightly closed door, pressed Xu Qingzhou's head down, and gave him a "smack" on the face.

"What are you chatting about?" Xu Qingzhou sat down beside Song Yao, snatched the orange Song Yao had half-peeled, and popped a few segments into his mouth.

Zhang Junli rolled her eyes: "Picking faults? Are you complaining that he solved too many math problems, or are you complaining about his status as a young scholar and the 'Ten Thousand Talents Program'?"

Xu Shouyun and Wang Xiaping saw them out.

Just as Song Yao and Xu Qingzhou were on the phone, in the master bedroom next door, Zhang Junli had just "finished eavesdropping," entered the room, and said to her husband: "Yao is on the phone with Qingzhou."

The ground buildings gradually became smaller; the plane entered the stratosphere, and Xu Qingzhou took out the materials on the Polignac conjecture to read.

At the same time, he first called Old Xu and the others to report he was safe, then called Song Yao.

"More nervous than me?"

"."

"I've watched this cartoon; is it strange?" Song Yao asked back.

The atmosphere during the meal was quite good, with the topic revolving around Xu Qingzhou's childhood, and Song Yao was able to chime in a few times.

"I've arrived."

Old Xu and Wang Nushi had both changed into new clothes, the kind they only wore during holidays and festivals; it could be said they were dressed for a grand occasion.

What the heck is soft or hard? Song Yao clenched her fists, wanting to give this person a couple of thumps; his brain was left with nothing but strange things.

Wang Xiaping waved her hand; Song Yao was dressed so beautifully that she shouldn't go to the kitchen and get stained by cooking fumes. Besides, it was the girl's first time visiting; there was no reason to make her cook.

August 10th.

"What kind of great thing? In second grade, going down to the river to catch fish, having your pants hidden by someone, and going home bare-bottomed?"

"Study, Old Xu, Xiaoyao and the others are back." Wang Xiaping shouted toward the study.

"."

Xu Qingzhou sighed endlessly, picked up a piece of spare rib for himself, and lamented that love would change after all.

"These two children..."

Xu Qingzhou was unsatisfied and patted the edge of the bed, "Do you want to lie down together and test if it's soft or hard?"

"I was wrong, I was wrong."

"Tea leaves and pastries."

"I just feel that it doesn't quite match the style of the school beauty Song."

Wang Xiaping smiled happily and greeted them: "You two sit for a moment; the food will be ready soon."

"Yes."

"I don't want to test it!"

Xu Qingzhou was trying to gain some presence in front of Wang Nushi.

"Yes, yes, yes, treat this like your own home; don't be restrained at all."

Although it wasn't the first time she had met Xu Qingzhou's parents, this was, after all, the first formal visit.

"Are you full?"

"Yes."

"Look at you, you're thinking crookedly. I was just saying my bed is very soft and wanted you to test it."

Opposite him, Xu Shouyun's mouth moved, but in the end, he didn't say anything, unscrewed his teacup, and took a sip of water.

Time passed very quickly—14 hours of reading materials, sleeping, and eating, a three-point-one-line routine.

Xu Shouyun nodded slightly, feeling that just a second ago his son was still an ignorant high school student, and suddenly he had become an adult and even brought a girlfriend home.

"It's quite good. Didn't you worry before that our daughter's personality was too cold and it would be hard to find a boyfriend?" Song Shisong was very reassured about his daughter.

"Arrived."

Xu Qingzhou tapped his fingertips lightly, hoping to find a pattern from this simple prime factorization method.

She held a parasol, carrying fruit and two gift boxes in her hands.

British scientist Peter Higgs proposed the existence of the Higgs field in 1964 and subsequently predicted the existence of the Higgs particle. Regrettably, it took nearly 50 years, until 2013, to be discovered at the LHC (Large Hadron Collider).

"Let's go." Xu Qingzhou hung the cat bag on himself, held Song Yao's hand, and walked slowly toward the outside of the residential area.

Wang Nushi said mercilessly: "Pick it yourself."

"It seems you don't know me well enough. After I return from Switzerland, we'll have a deep exchange. Hiss~ you're pinching people again!"

Song Yao cradled Er Miao in her arms.

"You actually knew?" Xu Qingzhou was surprised.

"Actually, my parents are also nervous." Song Yao said, then found it funny—how did it become the parents' generation that was nervous?

Song Yao glanced at him sideways, knowing this guy was teasing her. She touched her stomach, feeling a bit distressed; she would have to go on a diet for the next few days.

Wang Xiaping also heard the movement at the door and poked half her body out of the kitchen, "Xiaoyao is here! Quick, come in and sit."

"." Xu Qingzhou's face darkened; this conversation couldn't go on at all. Song Yao had been a little nervous at first, but now that she saw Xu Qingzhou's parents, she was much calmer. She discovered that Xu Qingzhou's parents seemed to be even more nervous than she was.

Xu Qingzhou squeezed Song Yao's hand and asked with a smile. Under Wang Nushi's warm hospitality, Song Yao ate two large bowls of rice.

Over the past two days, Xu Qingzhou had organized all the cases of predecessors combining sequences and sieve methods.

"Is the school beauty Song stage-frightened?"

Xu Qingzhou trotted over and took the umbrella and things from Song Yao's hands, "So many things?"

"Yes, you've been on a plane for a day; you must be very tired." Song Yao's voice came through the receiver.

"What kind of strong medicine?"

"Didn't you feel it?"

"Mom, I want some too."

He actually felt this scene was a bit strange, but thinking about it carefully, they were a couple; what was wrong with eating something together?

"Talking about the bad things you did in the past—clearly going online with Guo Ziyang, yet pretending to go to school for self-study."

!.

Song Yao was accustomed to the draft paper on the table and curiously picked up the Changhong Sword next to it: "Rainbow Cat's Changhong Sword."

"Serves you right!"

Song Yao didn't want to bother with this person.

"."

"Qingzhou should have arrived in Switzerland by now, right?" Song Shisong put down his phone.

"."

Xu Qingzhou changed the subject from last time and whispered: "You've met so many times; you really don't need to worry. Besides, actually, Wang Nushi and the others are even more nervous than you."

Xu Qingzhou was indeed nervous when going to Song Yao's house; after all, he had to accept scrutinizing gazes. Song Yao coming to his house was different.

Song Yao hummed softly, feeling that Xu Qingzhou was right—she couldn't be too violent, but she could keep a tab on it and settle it later when they got home.

"No. An ugly daughter-in-law will eventually have to meet her parents-in-law." Xu Qingzhou felt the school beauty Song was quite cute right now.

"You're the ugly one." Song Yao glared at Xu Qingzhou, thinking to herself that this guy couldn't say anything nice.

Wang Xiaping wiped her hands on her apron and walked out, her smiles piling up, "Xiaoyao, look at you, just coming is enough; why bring anything?"

"No need, no need."

The shadows of the two young people constantly intertwined, moving further and further away in the orange light of the street lamps, disappearing around the corner of the street.

4—10: 255—15: 356—21: 37. This sequence can list all prime numbers because each term of the formula n(n+1)/2 and the term before it are superimposed, just like the parts sewn together on clothes.

In Wang Nushi's eyes, Song Yao was beautiful, generous, confident, and gentle... simply too perfect. Only he knew the bitterness and sorrow in this.

Prime factorization in sequences has a pattern. If one cannot grasp this pattern and find a suitable tool to explain it, one cannot integrate the sequence into the sieve method.

Xu Qingzhou didn't continue this topic, lest he get beaten: "I wasn't wrong, was I? Look, my dad is already sitting uneasily."

"This requires some strong medicine."

"Yes, I believe it."

"You're honest?" Song Yao raised an eyebrow.

This made her breathe a sigh of relief. In this hot weather, there were few people strolling in the residential area, and no gossiping crowds appeared.

He had noticed last time they ate that with one look from his daughter, that boy from Old Xu's family would lose his nerve.

Xu Qingzhou took Song Yao through a few turns, walked into the building, and before pushing the door to enter, he clearly noticed the little hand he was holding tighten.

"When we go out later, you just call them 'Dad' and 'Mom,' and they won't be nervous anymore."

"Mom, why do you only pick my embarrassing stories to tell? Can't you say something great?"

"Auntie, let me help you." Song Yao stood up; being diligent was never wrong.

Looking at the two young people holding hands under the street lamp, Wang Xiaping couldn't help but sigh with emotion: "This brat already has a girlfriend."

At the entrance of the building, Song Yao said: "Uncle, Auntie, no need to see us off."

At 7:00 PM local time, Xu Qingzhou arrived at Geneva Airport. After getting his luggage, he found a seat in the airport to wait for Academician Yang and the others who were arriving late.

The two entered the residential area. The school beauty Song, who was like a fighter jet in front of Xu Qingzhou, suddenly withered and followed Xu Qingzhou obediently.

"I heard you." Xu Shouyun carried his teacup, came out of the study, and said with a smile: "Xiaoyao, treat this like your own home, sit."

"Meow." Er Miao seemed to have heard Song Yao's voice long ago and was already waiting on the cabinet at the door.

Song Yao was still preparing herself mentally, but Xu Qingzhou had already pushed the door open and pulled her inside.

Xu Qingzhou poked a piece of apple from the table and handed it to Song Yao's mouth. Song Yao ate half, and he tossed the remaining half into his own mouth.

"My mom is just enthusiastic. Ever since I started high school, she began worrying that I was too honest and wouldn't find a partner."

Night fell, the heat subsided, and coupled with gusts of wind, it finally didn't feel so hot.

At 6:00 PM, the fragrant meal was already on the Xu family's table. Wang Xiaping had been busy since the afternoon, managing to produce seven or eight dishes. "Come, Xiaoyao, try Auntie's cooking." Wang Xiaping picked up a piece of spare rib for Song Yao.

Xu Qingzhou smiled gently: "I was quite tired, but I'm not tired anymore after hearing your voice."

The Selberg sieve used by Chen Jingrun, the G-P-Y method used by Zhang Yitang, as well as the random measure of the Dirac distribution, fractal measure, and even neural network recursive inversion, etc.

"Someone's palms were sweating when they went to my house last time."

The difficulties encountered at home on the 8th were not resolved.

At 9:00 AM, Xu Qingzhou boarded the plane to Switzerland. A direct flight from Rongcheng to Geneva Airport in Switzerland takes about 14 hours.

Xu Qingzhou told the truth. As he spoke, he pulled Song Yao's hand, wrapped his arm around her slender waist, and let her sit on his lap.

"A little token of my appreciation." Song Yao said.

Xu Shouyun was twisting his teacup; he stopped halfway, twisted it back, and said: "Xiaoyao, eat some fruit."

"No." Song Yao pouted. With so many routines all day, is this called honest?

From Wutong residential area to Song Yao's home was only a ten-minute walk. Xu Qingzhou and Song Yao were not in a hurry and planned to walk outside.

"Where's my dad?" Xu Qingzhou found no one in the living room and suspected Old Xu was hiding because he was worried he would be embarrassed being alone in the living room.

At that time, he would meet up with Academician Yang and the others who were arriving an hour late, and go to the LHC headquarters together.

Song Shisong was speechless. Having such a son-in-law, he should indeed be satisfied.

Seeing nothing to do, Xu Qingzhou simply pulled Song Yao up, introduced the study, the master bedroom, then took her into his bedroom and closed the door on his way.

Xu Qingzhou said leisurely: "We are in the Wutong residential area now; if you make a move, your gentle persona might not be preserved."

Xu Qingzhou couldn't help but laugh. The school beauty Song didn't talk much on weekdays, but fortunately, with Wang Xiaping, this middle-aged woman, there was no chance of an awkward silence.

Song Shisong thought for a while and continued: "This young man Qingzhou is quite good; no matter how you look at it, you can't pick any faults."

He casually turned off the bedside lamp: "Let the young people solve their own affairs. Our older generation's experience in this area is outdated; there's no need to interfere."

"You're quite broad-minded."

"Sigh~ no way, based on my observation, Qingzhou is the one being bullied."

"."

(End of chapter)