Ding Dong –

Pang Xuelin picked up his mobile phone, looked at Qi Xin's reply, and couldn't help but be slightly stunned.

The tone of this reply seems to be different from Qi Xin's previous way of speaking.

And she also took the initiative to bring a friend to meet her?

Could it be that she is looking for a boyfriend?

Pang Xuelin shook his head and didn't think about it again.

The Witherspoon steakhouse on Nassau Street is not far from the hotel where Pang Xuelin is staying, Pang Xuelin went downstairs at half past six, and when he walked to the steakhouse, it was only six forty.

Qi Xin hasn't arrived yet.

Pang Xuelin found a four-person booth to sit down and asked the waiter for three glasses of water.

After about ten minutes, Pang Xuelin saw Qi Xin walking in in a gray woolen coat.

Her coat was not buttoned, and inside was a versatile knee-length skirt, and black stockings wrapped around her slender calves, which looked elegant and temperamental.

I haven't seen him for half a year, Qi Xin looks a lot thinner and haggard, but when he saw Pang Xuelin, a pair of eyes seemed to have regained their former brilliance in an instant.

Pang Xuelin beckoned to Qi Xin: "Qi Xin, I'm here!" ”

A bright smile bloomed on Qi Xin's face, and he involuntarily quickened his pace.

But in the next second, Pang Xuelin's eyes suddenly widened.

Behind Qi Xin, followed by a tall mature woman, in terms of appearance, although she is a few points inferior to Qi Xin, the style between her eyebrows and eyes is far more than that.

Not to mention, her body is already close to perfection.

"Tomoko...... How could she be with Qi Xin? ”

Pang Xuelin was dumbfounded.

"Learn ...... Professor Pang, long time no see! ”

Qi Xin sat down opposite Pang Xuelin and said with a smile.

Pang Xuelin came back to his senses and said with a smile: "Qi Xin, why did you have a split after not seeing me for half a year, you still call me junior brother,

"That'...... All right! Apprentice! ”

Seeing that Pang Xuelin's attitude towards him was no different from before, for some reason, Qi Xin felt a little happy inexplicably.

"Who is this......?"

Pang Xuelin turned his gaze to Zhizi, who was sitting next to Qi Xin.

Qi Xin smiled: "By the way, let me introduce you, this is Wang Zhi, my best friend I met after coming to Princeton, and now she is a master's student in the Department of Mathematics of Princeton University!" ”

"Hello, Professor Pang!"

Zhizi winked at Pang Xuelin and said with a smile.

Pang Xuelin had a headache, Zhizi actually appeared by Qi Xin's side, and it seemed that she had obtained a legal identity in the United States.

"Wang Zhi, hello!"

Pang Xuelin glared at Zhizi and shook hands with her, then handed the menu to the two of them and said, "I ordered a pan-fried salmon with herb sauce, a pan-fried butter prawn, a grilled sirloin steak, and a creamy mushroom soup, what do you want to eat, add more!" ”

Qi Xin took the menu and said, "I'll add another tuna salad, a tomahawk steak and borscht, Sister Zhi, what about you?" ”

Tomoko smiled, "I'll have a cod steak and borscht is enough!" ”

"Good!"

Soon, Qi Xin summoned the waiter and handed the ordered menu to the other party.

Pang Xuelin asked, "Senior sister, how do you feel during this time at Princeton?" ”

Qi Xin said: "It's okay, it's just that the study pressure is a bit high, I have to read a variety of different literature every day, and I have to write several articles every week for group discussions." In addition, I have to help professors with projects, and I am often too busy to touch the ground. But I'm a little curious, why didn't Princeton have a business school? I'm majoring in finance and economics now, and I feel like it's a little more academic. ”

Pang Xuelin laughed: "Princeton not only does not have a business school, but also has no law school or medical school, which is to maintain a theoretical orientation for its academic style, and to maintain the simplicity of the school spirit, which is incomparable to other Ivy League schools or other recent emerging prestigious schools." ”

Qi Xin nodded and said: "That's true, those classmates around me are super hard, after I entered the school, I didn't dare to relax at all, I felt that if I slackened a little, I might fall behind." ”

Pang Xuelin laughed and said: "This is a rare opportunity, when you graduate in the future, you will miss this hard time." ”

Qi Xin smiled and nodded yes.

At this time, Zhizi on the side said: "Professor Pang, I am now studying for graduate school under Professor Peter Sanek, I heard that the Ponzi Geometry Seminar of Jiang University is still recruiting, I want to go to you to study for a doctorate, what do you think?" ”

Pang Xuelin was slightly stunned, he didn't expect that Zhizi would think of returning to him in this way.

If she goes to study under her, then she will not be eye-catching in the future to hand over the graphene lithium air battery to her.

He laughed and said, "Yes, but my requirements for recruiting graduate students are relatively high, so let's do it, if you prove the hail conjecture, I will agree to let you study for a doctorate under me!" ”

"Hail conjecture? Is it hard? ”

Qi Xin said curiously.

Pang Xuelin said with a smile: "The hail conjecture, also known as the Kakutani conjecture, refers to a positive integer x, if it is an odd number, multiply it by 3 and add 1, if it is an even number, it will precipitate the even factor 2??, so that after several times, it will finally return to 1." It has been almost half a century since this conjecture was proposed, and no one in the mathematical community has yet been able to solve it. ”

"It's too hard, isn't it?"

Qi Xin opened his mouth, and just wanted to open his mouth to ask for a favor for Zhizi, when he heard Wang Zhi smile and said, "Professor Pang, then say it, solve the hail conjecture, and I will go to your hand to study for graduate school." ”

"A gentleman's word!"

"It's hard to chase a horse!"

The two clapped their hands very tacitly.

Qi Xin looked at Pang Xuelin, then turned his head to look at Zhizi, and always felt that something was wrong.

The set meal ordered by the three of them was quickly served, and next, Pang Xuelin, Qi Xin, and Zhizi chatted while eating, and the atmosphere at the table was always very warm.

Half an hour later, Zhizi finished eating the last fish steak, picked up a tissue and wiped his mouth, and said with a smile: "Okay, Professor Pang, I'm done eating, I won't bother you anymore, I wish you all a good time!" ”

Saying that, Zhizi didn't wait for Pang Xuelin and Qi Xin to react, got up directly and left the restaurant.

Pang Xuelin and Qi Xin couldn't help but look at each other, Pang Xuelin smiled: "You best friend, it's very interesting." ”

Qi Xin laughed and said, "Indeed, I've only known Sister Zhi for less than a month, but I don't know what's going on, we have become friends who talk about everything." ”

Pang Xuelin secretly felt funny, with Zhizi's ability, I am afraid that he would have already checked Qi Xin's bottom cleanly, and then deliberately approached the other party, if he wanted to get Qi Xin's friendship, it should not be too simple.

I don't know how the other party obtained the legal status of the United States, and he was able to go to graduate school under Peter Sanek.

Pang Xuelin had to ask carefully.

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