"Ahem!" Professor Nan looked at it for a long time, and the teaching assistant was wearing high heels. Seeing Professor Nan's serious expression, he didn't dare to say anything. He could only change the center of gravity through slight movements to let the two casters rest in turn. But even so, he couldn't hold on until now, so he had to cough twice to remind Professor Nan.

"Hmm? What are you doing here?" Professor Nan's face was full of dissatisfaction with interrupted thoughts. His tone reminded the teaching assistant of his feelings when he received the call last week when he had sex with his boyfriend.

"Sorry, but..." You are not tired when standing, but I am wearing high heels!

Before she could finish her words, Professor Nan sternly said, "Go and call Lu Qiujian and ask him to come to my office immediately, and go now!"

"Okay! I'll go right now!", it seems that something big happened! Could it be that Lu's test result angered him? The teaching assistant did not dare to say much, and hurried back to his seat to flip through the address book.

Professor Nan also returned to his office, took out his phone and took out a number and dialed it in, "Hey, William! Are you still in school now?... It's great, can you come to my office?... No, no, no, I know Christmas is coming, but please believe me, you will definitely not regret it when you come... It's about that question... Yes, it's the one you have been studying. I found something very interesting here. If you don't come, I will call Hamilton or Friedman! I believe they won't care about Christmas!... Okay, I'll be waiting for you in the office!"

As soon as he hung up the phone, Professor Nan poked his head out of the office and shouted, "Anna! Has Lu's phone number been connected? When did he say come?"

"Oh! Oh my God!" Anna, who was frightened, accidentally dropped the address book she had just found on the ground, picked it up in a hurry and said, "It's fine right away! Please give me some more time!"

Well~~Professor Nan shook his head and returned to the office, but he couldn't calm down. While thinking about Lu Qiujian's problem-solving ideas, he was walking around the office.

"Hey, hello!" As soon as two sounds were heard, Lu Qiujian, who was lying on the bed, pressed the answer button of the Motorola V730, "This is Lu Qiujian!"

"Hello, I am Anna, the teaching assistant! We just met in the afternoon. Do you still remember?" Anna guessed that the reason why Professor Nan was so strict was perhaps because Lu Qiujian's performance in the afternoon was too poor, so she didn't speak very politely.

"Is there anything?" Lu Qiujian heard the dissatisfaction from her tone, so he also answered hard.

"Professor Nan asked you to go to his office now!" Anna was depressed. Others were preparing to pack up and go home to welcome the Christmas purchase, but she didn't know when she would get off work.

"Sorry! According to the school arrangement, it's already a holiday! I have no obligation to go to the professor's office at this time!" Lu Qiujian vented his anger in anger.

"It's about your exam! Professor Nan asked me to call you over immediately after reading your answer sheet!" Afraid that he hung up the phone, Anna quickly explained, and her tone of speaking softened a lot, "Don't you want to know the results of your exam?"

"Okay, I'm in the dormitory now, I'll go there right away!" After a while of silence, Lu Qiujian agreed.

"Anna! Has the phone not been connected yet?" Professor Nan's head stretched out again.

"He is in the dormitory now and comes right away. It takes about twenty-five minutes to walk here from Butler Residence College. Please wait patiently!" Anna reflected the professional quality of an assistant at this time and gave Professor Nan an accurate number based on her own judgment.

"Twenty-five minutes?" Professor Nan muttered and repeated, as if he thought the time was too long, he shook his head and started paced in the office again.

Ten minutes later, Anna and his visitor knocked on the door of Professor Nan's office, "Is it Lu Qiujian here?" Professor Nan shouted as soon as he came to open the door. When he saw clearly, the people behind Anna reached out with regret, "Welcome, William!"

This William is not Professor William Timothy Golls, but William Thurston, who looks in his fifties, has a big hooked nose and a pair of black-framed glasses; he is another Fields Medal winner who teaches in Princeton. He won the award in 1982 for the leaf-like structure and classification of the 3-dimensional manifold. That year he also won the award by Chinese mathematician Shing-Tung Yau.

"Nan, where is the east and west?" Thurston walked into Professor Nan's office without hesitation and looked around.

"Here!" Professor Nan reluctantly handed over the answer sheet of Lu Qiujian, "Although one of my students did it, it seems that I have never seen anyone else use this method."

"Let me see!" Thurston was lucky enough to get a banquet like a hungry victim. He subconsciously licked his lower lips, and took the thin sheets of paper with his slightly trembling hands and browsed it.

"You know, I have not studied this issue very deeply, and I only know some general knowledge. I am not very clear about the level of research on this issue and any new methods, so I hope you can give me an accurate evaluation!" Professor Nan said, rubbing his hands.

"Ahh, I see that he has used my method!" Thurston pushed his eyes on the hooked nose and said excitedly, "There is also Professor Hamilton's Ricci flow, but how do he plan to solve the problem of increasing singularity in the Ricci flow? Judging from the previous content, he seems to have found a solution to this problem! Let me see, let me see how he did it!"

Thurston turned to the next page with a tremolo, and then let out an angry roar, "FXXK! Why is there nothing below?"

"Uh, I think this is a misunderstanding!" Professor Nan spread his hands embarrassedly, "This is the exam question completed by one of my students. He completed so much in two hours of exam time!"

"What! Are you giving students the exam questions?" Thurston opened his eyes wide, not knowing what to say!

At this time, the knock on the door sounded again, and Anna's voice came from outside, "Professor Nan, Lu is here!"

"Come in!" Professor Nan quickly welcomed Lu Qiujian in, "What do you want to drink? Coffee or tea?"

Well? Why did Professor Nan have this attitude? And why did Professor Thurston be here too? Lu Qiujian was stunned for a moment before saying, "A cup of black tea, thank you!"
Chapter completed!