Chapter 473

Dressed in a plain long dress, Mu Leng stood in the dense flow of people in Wanda Plaza, looking around.

Seeing a familiar figure in the distance, a touching smile appeared on the corner of her mouth, but it was quickly hidden.

Cheng Nuo ran over panting, wiped the sweat on his forehead, and said with a smile, "Didn't you make an appointment at ten o'clock, it's only half past nine now, come so early?"

Mu Leng glared at Cheng Nuo fiercely, tilted his head, revealing his snow-white neck, "I'm willing." ”

"Uh......" Cheng Nuo touched his nose and was bored with himself.

"Well, I'll go shopping for a few clothes with you, go to the movies after lunch, and let's go. Cheng Nuo subconsciously wanted to hold Mu Leng's arm.

Unexpectedly, Mu Leng turned sideways and let Cheng Nuo hug him in the air.

"Let's go. Mu Leng glanced at Cheng Nuo, his tone was light, and then he took the lead in walking forward.

Sensing Mu Leng's resentment, Cheng Nuo knew that he was at a loss, and followed Mu Leng stupidly.

"That, Ah Leng, discuss something with you?" Cheng Nuo hesitated for a long time during lunch, and then asked slowly.

Mu Leng raised his head and put down his chopsticks, "What's the matter?"

"When are we going to get married?" asked Cheng Nuo stubbornly.

Mu Leng's body trembled, and an abnormal blush appeared on his face.

She touched her somewhat hot face, and her voice trembled slightly, "You, why are you suddenly asking this?"

"Nothing, just ask. Cheng Nuo spoke.

Mu Leng glanced at Cheng Nuo fiercely.

What do you mean, just ask?

I wanted to say yes half-pushed, but now it seems that ......

"I haven't thought of this yet, besides, I'm still in school, so I'll talk about it later. Mu Leng replied.

Cheng Nuo took a big sip of juice, "Well, we'll discuss it later, and we'll discuss it later." ”

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

Stayed at home for a week.

When the time came to the end of August, Tsinghua University had been urging again and again.

Because school is about to start, some affairs should be arranged in advance.

Cheng Nuo had no choice but to say goodbye to his parents and fly to Kyoto.

It is worth mentioning that Cheng Nuo took Mu Leng on the plane with him.

Mu Leng has just finished his undergraduate studies this year and is currently preparing to continue his studies at Yenching University.

"Why don't you come to Tsinghua University for graduate school, I can take you with me." Cheng Nuo proposed.

"Don't!" Mu Leng shook his head and decisively refused.

I treat you as a boyfriend, and you actually want to be my teacher!

Besides, if Cheng Nuo really wants to be his mentor, wouldn't he always have to be inferior to Cheng Nuo.

She would rather continue to stay at Yenching University than go next door to play some teacher-student relationship with Cheng Nuo.

"You really don't think about it, you know, there is a long queue of graduate students who want to be my student right now. Cheng Nuo smiled at the corner of his mouth.

Mu Leng hugged his arms and twisted his head to the side, "It's not uncommon. Anyway, if you encounter a problem that you won't have, you won't refuse. ”

"Uh......" Cheng Nuo was stunned for a moment, feeling that this was indeed the case.

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

It was already afternoon when the plane arrived at Kyoto Airport.

Take a taxi all the way to the university town.

With a helpless look on his face, Cheng Nuo walked into Yenching University with his suitcase, Cheng Nuo sighed, shook his head and walked into Tsinghua University next door.

Tsinghua University assigned Cheng Nuo a professor's apartment, which was very large, and Cheng Nuo was afraid that he would be alone, so he invited Mu Leng to come in and live together.

By the way, it can also save Mu Leng a lot of accommodation fees.

Cheng Nuo's purpose was very simple, but it seemed that Mu Leng was not very appreciative, and after glaring at Cheng Nuo with the eyes of a beast, he turned around and left.

To be honest, Cheng Nuo was a little careful.

The university's professors' apartment building is located in the southern district of Tsinghua University.

Cheng Nuo didn't come to this building once or twice, after all, Professor Fang lived in this building.

Even though he hadn't been back to Tsinghua for a year and a half, the memories of school had never been erased in Cheng Nuo's mind.

Cheng Nuo's apartment is on the second floor, and the upstairs happens to be Professor Fang's residence.

Opening the door, Cheng Nuo glanced around and nodded with satisfaction.

There is no shortage of furniture or appliances, but perhaps because no one has lived in it for a long time, the house is a little deserted.

After sorting out his luggage, Cheng Nuo walked upstairs and knocked on the door of the professor above the building.

"Cheng Nuo, are you back?"

The door was quickly opened, and Professor Fang's somewhat aged face appeared in Cheng Nuo's sight.

"Hmm. I am back. After coming back this time, I won't leave!" After a pause, Cheng Nuo said with a smile.

"I know, I know. Professor Fang patted Cheng Nuo on the shoulder, "I've heard all about your affairs abroad." I didn't expect you to be even better than I thought!"

"That's still the teacher, you teach well. ”

"Haha, you kid don't put gold on my face anymore, I still know in my heart what level I have. ”

"Come, don't stand at the door. Let's go in and talk. ”

On the sofa in the living room, Cheng Nuo and Professor Fang sat down.

"During this time, you can be said to be in the limelight in the international geometric world for a while, and I can hear from you from time to time when I stay in China. Professor Fang smiled and said, "What, after coming back this time, you still continue to prepare to study the geometric direction?"

"Nope. Cheng Nuo shook his head, "In the field of geometry, I have almost reached the limit, I can only expand in breadth, and in depth, it is difficult to take a step forward." ”

"So, when I go back to China this time, I plan to do something different. ”

"What, number theory, or algebra?" Professor Fang was intrigued.

"BSD conjecture!"

Professor Fang's face was stunned.

Cheng Nuoyu was not shocked, "I want to prove the complete version of the BSD conjecture!"

After a moment's pause, Professor Fang stood up directly from the sofa.

The BSD conjecture, one of the seven mathematical conjectures of the millennium.

Speaking of this conjecture, Professor Fang is no stranger to it.

A few years ago, it took him Cheng Nuo, who was still an undergraduate student at the time, to prove a simplified version of this conjecture - the weak BSD conjecture!

However, the weak BSD conjecture is not on the same order of magnitude as the full version of the BSD conjecture in terms of difficulty level.

To put it simply, the weak BSD conjecture is only half of the Jacques conjecture, but the full version of the BSD conjecture is five times more difficult than the Jacques conjecture, and more than that!

"Are you sure?" Professor Fang stared at Cheng Nuo.

"To be honest, no. ”

Cheng Nuo's answer made Professor Fang choke.

Cheng Nuo explained, "I'm not 100% sure, but I think I can give it a try." ”

That's BSD conjecture after all!

Even among the seven mathematical conjectures, the BSD conjecture is not the simplest.

In the face of this towering mountain, if he doesn't really climb it, Cheng Nuo doesn't have much confidence that he will be able to climb it.

Moreover, compared with other mathematicians, Cheng Nuo also has an advantage.

That is, he once proved the weak BSD conjecture, which will undoubtedly have some benefit to him.

Seven mathematical conjectures!

It would be a great honor to solve only one of them.

Cheng Nuo has coveted it for a long time, and now, he is ready to start attacking!