If you will wait until seven o'clock, I will keep the appointment. Open the mobile phone again and confirm the email. Although I don't know the meaning of the character expression used by the young people very well, Professor Krugman can understand the previous line.

"Five minutes and seven o'clock left," Professor Andes continued, raising his cuff and looking at the time on the watch. "Are you sure he's talking about seven o'clock in the evening?"

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

"To be honest, I'm not sure. I'm not even sure if he means today or tomorrow?"

"You should have asked!"

Professor Andes murmured in a low voice, stood up with a sigh, and continued.

"I'll get something to eat first It's impossible to wait so long. I advise you to get something to eat too. It will take another hour to collect the meal. It's not good for your health to cram your stomach full before you go to bed. "

Just when Professor Andes picked up the plate and was about to pick up the meal, a figure suddenly came quickly from the direction of the door.

When he saw the impressive face, Professor Krugman's eyes lit up Or, with a glance, he stood up with his hands on the table, and then he warmly extended his right hand to greet him! Professor Lu Zhou, nice to meet you! "

Also saw the boat in the cafeteria, Professor Andes did not leave immediately, happily put down the plate in hand, also followed up.

"I'm waiting for you at last!"

"I'm not late, am I?" Looking at the silver watch on his left hand, Lu Zhou whispered to himself, "it's very dangerous. I'm still a minute late."

After patting Lu Zhou on the shoulder, Professor Krugman showed the enthusiasm that was no less than that of the salesman of the insurance company. He said with a smile, "there's no need to struggle for that one or two minutes. Even if it's a long time, we'd like to wait for you. Let's talk while eating. I'm starving."

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

Professor Andes naturally said, "isn't this waiting for you?"

Lu Zhou's expression was a little embarrassed, and he coughed softly.

“…… In fact, I don't mind if you can wait while you eat. "

After hearing this, Professor Krugman and Professor andis fell into a confused silence and finally looked at each other in silence.

That expression seems to be saying

MMP!

Why didn't you say it earlier!

……

The three took their meals and sat at the table of four by the window.

Looking at the empty space beside the boat, Professor Krugman suddenly thought of something and took out his mobile phone from his pocket.

"I'll call first."

Lu Zhou nodded. He was already hungry. He was not polite to the two people sitting opposite. He reached for his knife and fork and began to break down the Boston lobster.

After a while, Professor Krugman, who had just been on the phone, came back.

He came here with Lu Zhou's sister, Xiao Tong, who just flew to Princeton a few days ago

"Hi Brother. "

Xiao Tong waved awkwardly on his face and sat next to the boat with some embarrassment.

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

"How is it? Does the new environment still fit in? "

"Very good..." Some embarrassed scratched the back of his head, and Xiao Tong whispered, "aren't you surprised? I'm here in Shanghai. "

Hearing Xiaotong's question, Lu Zhou bends her mouth.

"Professor Krugman is here. I guess this guy will bring you too. Let me guess, when the plane landed here, did he ask you to call me? You want me to come here? "

Hearing that the boat perfectly restored what happened the day before yesterday, Xiao Tong blinked in surprise.

"Eh? Can you guess all this? "

"Wait, you didn't call?!" Krugman took a surprised look at Xiaotong, and then looked at the smiling boat. Then his face showed a look of being seen through. He coughed awkwardly and said, "I'll make a statement in advance. I didn't ask her to call you. I just hope she can call her family and report safety."

Lu Zhou: "is there any difference?"

"Well," said Krugman, shrugging as if giving up, leaning back on his chair, with a helpless face, "I apologize, I did play a little smart, but I swear I didn't mean anything."

Professor andis, who is sitting next to Professor Krugman, also helps his friends to talk: "Krugman is also out of kindness. He wants you to see his research results shine in this field, so he wants you to come here In fact, as you can see, Lu Bewley model is now one of the most popular directions in economics. I don't feel surprised that even the Nobel Committee is considering awarding you prizes for it. ""It's too early to say that. They still owe me a physics prize for the theory of strong electric interaction. How could they give it to me first?"

Don't care how to smile, Lu Zhou will look at the expression of some uneasy little Tong, said a few words.

"You're all in Shanghai. Why didn't you call me?"

Xiao Tong pouted and finally sighed.

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

"If you had been honest, you would not have said such a trick to me."

Looking at Xiaotong with a stunned face, the boat pauses for a moment and continues.

"In fact, you don't have to worry about giving me any trouble."

The moment that hears this sentence, small Tong's eyes opened slightly.

"Why All of a sudden? "

That surprised voice, with a trace of being seen through the surprise and consternation, eyes in the flashing look is completely unexpected.

It's like secretly doing something bad without the adults' knowledge, only to be seen through at a glance just after returning home.

"Because that's what you're thinking?"

His face showed such an expression, and Lu Zhou smiled and shook his head, sighed and said.

"In fact, other people's requests are really troublesome for me. Many things that can only be done by me can't be pushed back, because the reason of responsibility can't be pushed back at all. Including coming to Shanghai, including attending the unveiling ceremony of imcrc, these are all troubles for me And it's a lot of trouble. "

In fact, all along, he can feel the contradiction in Xiaotong's heart.

On the one hand, I want to rely on myself, on the other hand, I want to get rid of my dependence. I want to change from a little girl who is bullied in school and can only cry by my elder brother to a mature person who is as strong, independent and even powerful as my elder brother

He knows her so well after living together for so many years.

After all, this little guy has been running after his butt since he put on his crotch pants. His character is just like that carved in a mold

Here, the boat pauses for a moment, looking at Xiaotong's eyes and continues.

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

The open eyes slightly enlarged, and gradually printed a layer of water mist.

“…… Brother. "

Looking at Xiaotong's face, Lu Zhou smiles, reaches out and rubs his head hard, and continues.

"Don't keep it from me when you have something to do! Do you remember what I said to you a few years ago when you were a freshman? "

He raised his sleeve and rubbed against the corner of his eyes. Xiao Tong sucked in his nose, his voice choking with frustration.

“…… Which one? I can't remember you talking so much. "

"Take you to fly," Lu Zhou said with a smile and a joke, "and come back with a Nobel Prize in mathematics."

The previous conversations were all in Mandarin, but the last half of them were in English.

All of a sudden, Professor Andis murmured and complained: "there is no Nobel prize for mathematics, it is an economics prize!"

"Yes! I agree with Professor Andes, "Professor Krugman, who was sitting next to him, nodded his head seriously and protested, but his tone soon softened." of course, although Nobel has no prize for mathematics, it doesn't prevent mathematicians from winning If you are willing to continue to study in the direction of Lu Bewley model, it is only a matter of time before you win the prize. "

"Haha, don't be excited. You are right. Nobel does not have a math prize. That's the honor of economists I'm just kidding. "

Looking at the atmosphere on the dining table, Lu Zhou smiled and looked at Xiao Tong, with a serious look on his face, and continued.

"As for the report meeting in the afternoon, I thought for a long time after I left the lecture hall."

"It will lead to such a big misunderstanding among such excellent scholars as Joseph who are good at using mathematical tools. Maybe I have some problems myself."

"I took a little more seriously this time, and simply improved the Lu Bewley model." I took the A4 paper folded into squares from my pocket, looked at it again after the launch of the land boat, and handed it to Xiaotong, "and the things on these draft papers are the improved Lu Bewley model."

"Although it's not sure whether it works as you describe it, at least in the mathematical sense, it will be more rigorous and operable than the previous model."

After that, he squeezed his eyebrows and joked in front of Professor Krugman and Professor andis, who were full of amazement, looking at the bundle of A4 tongs in his hands with amazement written on his face."This time, it's not just an hour for me, your brother."