[If you're willing to wait until seven o'clock, I'll go to the appointment.] ∠(?」 ∠)＿】

I opened my phone again and confirmed the email, although I didn't really understand what the characters and expressions used by the young people meant, but Professor Krugman could still understand the words in front of him.

"Seven o'clock in five minutes," he said, glancing at the time on his watch, Professor Andes continued, "Are you sure he said seven o'clock in the evening?" ”

Professor Krugman shook his head with a bitter smile on his face.

"Honestly, I'm not quite sure, I'm not even sure if he means today or tomorrow?"

"You should have asked!"

Professor Andes muttered quietly, sighed, stood up, and continued.

"I'm going to get something to eat first...... You can't wait so endlessly. I advise you to get some food too, you will have to eat in another hour, and it is not good for your health to stuff your stomach before going to bed. ”

Just as Professor Andes had just picked up the plate and was about to pick it up, a figure suddenly walked briskly from the direction of the door.

The moment he saw the face that impressed him, Professor Krugman's eyes lit up...... Or rather, he stood up with his hands on the table, and then enthusiastically stretched out his right hand to meet him

"Haha, welcome! Professor Lu Zhou, it's a pleasure to meet you! ”

also saw Lu Zhou who appeared in the cafeteria, Professor Andes immediately stopped leaving, put down the plate in his hand with a smile, and followed suit.

"I've finally waited for you!"

"I shouldn't be late, right?" Glancing at the silver watch in his left hand, Lu Zhou whispered to himself, "It's dangerous, I'm still a minute late." ”

Patting Lu Zhou on the shoulder, Professor Krugman showed enthusiasm that was not inferior to that of an insurance company salesman, and said with a smile: "There's no need to dwell on that minute or two, even if it takes a long time, we are willing to wait for you, let's talk while eating, my stomach is almost hungry." ”

Lu Zhou said unexpectedly: "You haven't eaten yet?" ”

Professor Andes said of course, "Isn't this waiting for you?" ”

Lu Zhou's expression was slightly embarrassed, and he coughed lightly.

“…… Actually, you can wait while eating, I don't really mind. ”

Upon hearing this, Professor Krugman and Professor Andes fell into a bewildered silence, and finally looked at each other silently.

The expression seemed to say......

MMP！

Why didn't you say it earlier!

……

The three of them came back with their own meals and sat down at a table of four by the window.

Looking at the empty seat next to Lu Zhou, Professor Krugman suddenly remembered something, so he took out his mobile phone from his pocket.

"Wait for me to make a call first."

Lu Zhou nodded, he was already hungry and couldn't be polite to the two sitting opposite, reached out and picked up the knife and fork, and began to break down the Boston lobster on the plate.

After a while, Professor Krugman, who had just gone to the side to make a phone call, walked back.

came with him, as well as Lu Zhou's sister, Xiaotong, who had only flown to Princeton a few days ago......

"Hi...... Dude. ”

Xiao Tong waved his hand awkwardly and sat next to Lu Zhou with some embarrassment.

Seeing his sister sitting next to him, Lu Zhou didn't feel surprised, just smiled and said.

"How? Are you still adapting to the new environment? ”

"It's good......" Scratching the back of his head a little embarrassed, Xiaotong muttered quietly, "Aren't you surprised to say it?" I'm here in Shanghai. ”

Hearing Xiao Tong's question, Lu Zhou bent the corners of his mouth.

"Professor Krugman is here, and I guess this guy is going to bring you with me. Let me guess if he asked you to call me when the plane landed here? Let you call me? ”

Hearing that Lu Zhou perfectly restored what happened the day before yesterday, Xiao Tong suddenly blinked his eyes in surprise.

"Huh? Can you guess this? ”

"Wait, you didn't call?!" Krugman glanced at Xiao Tong in surprise, and then at Lu Zhou, who seemed to be smiling, and then showed a recognized expression on his face, and coughed awkwardly and said, "Let me state in advance, I didn't say that I asked her to call you over, I just hope that she will call her family to report her safety." ”

Lu Zhou: "Is there any difference?" ”

"Well," Krugman said with a helpless expression as if he shrugged his shoulders back in his chair, "I apologize, I did play a little clever, but I swear I have absolutely no ill will." ”

Professor Andes, who was sitting next to Professor Krugman, also helped his friend and said, "Krugman is also well-intentioned, he wants you to see that your research results are shining in this field, so he wants you to come here...... In fact, as I'm sure you've seen, the Lu-Bewley model is now one of the hottest directions in economics, and I wouldn't be surprised that the Nobel Prize Committee was considering awarding you an award for it. ”

"It's too early to say that, they owe me a physics prize for the theory of strong electrical interactions, and they should have sent me that thing first."

Smiled indifferently, Lu Zhou turned his gaze to Xiao Tong, who had a somewhat apprehensive expression, and said a few words.

"You're all in Shanghai, why didn't you call me?"

Xiao Tong pursed his lips, and finally sighed and said.

"Okay, I'll be honest...... I'm afraid you'll laugh at me. ”

"If you were really honest, you wouldn't have said such things to fool me."

Looking at Xiao Tong, who looked stunned, Lu Zhou paused for a moment and continued.

"Actually, you don't have to worry about causing me trouble."

The moment he heard this, Xiao Tong's eyes opened slightly.

"Why...... Suddenly say this? ”

In that surprised voice, there was a hint of surprise and astonishment that had been seen through, and the glittering look in his eyes was also a surprise that he hadn't expected at all.

It's like secretly doing something bad without telling an adult, but as soon as you get home, you will be seen through at a glance.

"Because that's not what you're thinking?"

With such an expression on his face, Lu Zhou shook his head with a smile, sighed lightly and said.

"Actually, other people's requests are really troublesome for me, and a lot of things that can only be done by me can't be pushed away, and I can't push them off because of responsibility. Including coming to Shanghai, including attending the inauguration ceremony of IMCRC, these are all troubles for me...... And quite a hassle. ”

In fact, he has always felt the contradiction in Xiaotong's heart.

On the one hand, I want to rely on myself, but on the other hand, I am eager to get rid of my dependence on myself, and I am eager to change from the little girl who was bullied in school and could only shout at my brother to a mature person who is as strong, independent, and even strong as my brother......

Having lived together for so many years since childhood, he really knows her too well.

After all, this little guy has been running behind his ass since he wore open crotch pants, and his personality is simply carved out of the same mold as him......

Speaking of this, Lu Zhou paused for a moment, looked into Xiao Tong's eyes and continued.

“…… But you're my sister, you're no one else. No matter how many times you ask me, I've never treated your affairs as trouble. ”

The open eyes enlarged slightly, and gradually imprinted with a layer of mist.

“…… Dude. ”

Looking at Xiao Tong with a touched face, Lu Zhou smiled, reached out and rubbed the little guy's head vigorously, and continued.

"Don't hide anything from me in the future! Do you remember what I said to you during the Chinese New Year when you were just an undergraduate a few years ago? ”

Raising his sleeve and rubbing the corner of his eye, Xiao Tong sniffed, and his voice was a little choked.

“…… Which sentence? You talk so much, I don't remember. ”

"I'll take you to pretend to fly with you," Lu Zhou smiled and said jokingly, "By the way, I'll come back with another Nobel Prize in mathematics." ”

The first conversations were all spoken in Mandarin, but the last half of the sentence was in English.

I had been listening to it in a fog, and suddenly heard such a sentence, Professor Andes suddenly muttered and complained unhappily: "The Nobel Prize is not a prize in mathematics, it is a prize in economics!" ”

"That's right! I agree with Professor Andes," Professor Krugman, who was sitting next to him, nodded earnestly in protest, but soon softened his tone, "Of course, although the Nobel Prize is not a prize in mathematics, this does not prevent mathematicians from winning the prize...... If you are willing to continue your research in the direction of the Lu-Bewley model, it is only a matter of time before you win the prize. ”

"Haha, don't get excited, you're right, Nobel really doesn't have a prize in mathematics, that's an honor for economists...... I'm just kidding. ”

Seeing that the atmosphere at the table gradually became a little happier, Lu Zhou smiled, looked at Xiaotong, with a serious look on his face, and continued.

"As for the afternoon briefing, after leaving the lecture hall, I thought about it for a long time."

"It would cause such a major misunderstanding for a scholar like Joseph who is good at using mathematical tools, and maybe I have a certain problem."

"This time I was a little more serious and simply improved the Lu-Bewley model," took out the A4 paper folded into squares from his pocket, Lu Zhou unfolded it and looked at it again, and then handed it to Xiao Tong, "And the things on these scratch papers are the improved Lu-Bewley models." ”

"I'm not sure if it's really as effective as you've described, but at least mathematically, it's going to be more rigorous and actionable than the previous model."

After that, he squeezed his eyebrows, and in front of Professor Krugman and Professor Andes, who were full of surprise, he looked at Xiao Tong, who was holding the stack of A4 in his hand and his face was full of surprise, and said jokingly.

"This time, your brother and I used more than an hour."