While she was still waiting, Chen Zheyu and the others in the two classrooms in front had already completed this part of the competition, and she was the only one left waiting.

Yu Qi came into Su Qingyun's classroom, sat next to her, and asked softly, "How is it?" How many more numbers are there for you? ”

Su Qingyun sighed, "There are more than twenty more." ”

"Don't rush, wait slowly." Yu Qidao.

"Hmm." Su Qingyun nodded, he had been waiting for so long, and it was not a moment and a half.

waited until more than five o'clock in the afternoon before Su Qingyun finally heard her number, and she even went to have a meal during this time.

"Go ahead." Yu Qi gave her an encouraging look.

Li Siyuan looked determined, "You can." He still has more confidence in Su Qingyun than in himself.

Alexandra waved her fist, "Whew, come on!" ”

"Okay." Su Qingyun smiled and stepped forward to draw his own question.

Yu Qi and Li Siyuan watched nervously as she took out the test questions from the box and unfolded them, their expressions did not change, and there was no nervousness.

The two breathed a sigh of relief, it seemed that it should not be a difficult topic, and it was not a big problem.

But in reality?

Su Qingyun looked at the test questions in his hand, a little silent, this ......

There is only a short line of words on the paper: all the non-trivial zeros of the Riemann ζ function are located on a straight line Re(s)=1\/2 on the complex plane. That is, the solution of equation ζ(s)=0 is all 1\/2.

This is...... Riemann conjecture.

Su Qingyun sighed in her heart, with so many test questions, she was able to draw the Riemann hypothesis, which has not been proven so far, and she had no luck.

The Riemann conjecture was born in 1859 and has a history of more than 100 years, and countless mathematicians have tried to prove it, but they have not been able to do it in their lifetimes, and even the later generations from which Dao Su Qingyun came have not been confirmed.

At the 2nd International Congress of Mathematicians, some people put forward 23 mathematical problems that mathematicians should strive to solve in the 20th century, which are considered to be the commanding heights of mathematics in the 20th century, including the Riemann conjecture.

The Riemann conjecture may not be as well-known to the public as Goldbach's, but it is regarded by many mathematicians as the most important mathematical problem, and if the Riemann conjecture can be confirmed one day, it will definitely be a great earthquake in the mathematical community and the entire scientific community.

Because, in the mathematical literature, there are already more than a thousand mathematical propositions that presuppose the establishment of the Riemann conjecture, and if the Riemann conjecture is confirmed, then all these mathematical propositions can be promoted to theorems, otherwise, they become burial objects.

Su Qingyun looked at the Riemann conjecture in her hand, she really had a headache, she only had ten minutes, in the face of such an esoteric and complicated conjecture, what did she have to say to impress the judges?

Li Siyuan looked at Su Qingyun's calm expression from a distance, and he was a little uncertain.

"Team leader, it shouldn't be a big problem, right?"

"It should ...... bar. Yu Qi was not very sure, because he recalled that Su Qingyun didn't seem to have any nervousness in his memory, he had always had this expression, and now he couldn't tell whether the test questions in her hand were difficult or not.

The two glanced at each other, and there was a little drumming in their hearts.

Alexandra also enlightened Yu Qi, "It's amazing, she can make the last question in yesterday's test paper, and this is no problem." ”

"Thank you for my good words." Yu Qi smiled.

Ten minutes passed quickly, Su Qingyun stood on the stage, the moment she took the stage, the judging team that was already tired was in high spirits, and sat up straight, Stevens and Lambert looked at Su Qingyun's eyes, and their eyes lit up.

"How do I feel Mr. Stevens' eyes light up all at once?"

"Yes, they look at the expression of this Huaguo team member as if the hunter has seen the prey, hahaha."

"Why does the judging team seem to attach great importance to this Huaguo player?"

Yu Qi frowned when he heard the whispered discussion of the contestants around him, he observed several people in the judging team, as if it was really like that, they seemed to have an unusual degree of attention to Qingyun.

What's going on?

Just when he was confused, Su Qingyun on the stage spoke.

"Hello judges, I am the No. 197 participant, Su Qingyun of the Huaguo team, and the topic I want to elaborate on is the Riemann conjecture, and the following are some of my thoughts on the Riemann conjecture......

As soon as the word Riemann conjecture came out, the audience was silent.

Oh, God! How could it be the Riemann conjecture?

"It's terrible, Riemann's guess is also in the test question, fortunately, we didn't draw it, otherwise I really don't know what to do?"

"It was Fermat's conjecture just now, and now it's Riemann's conjecture, isn't the organizing committee crazy, this kind of world-class conjecture has been put into the test questions, and now there are more than ten questions left, there won't be other conjectures in it, right? I can't even imagine the mood of the players behind me. ”

The contestants who have completed this link patted their chests and rejoiced, fortunately, they were not the ones who drew these perverted questions.

And the contestants who were still waiting behind Su Qingyun had their faces turned a few degrees whiter, and they all prayed in their hearts not to draw similar questions.

The team members from all over the world looked at Su Qingyun with sympathy, and they didn't expect anything in their hearts, what could they say about this kind of topic and in such a short time.

"Oh my God!" Alexandra froze.

Li Siyuan couldn't understand what Su Qingyun said, but looking at the expressions of the people around him, he noticed that something was wrong, and hurriedly asked Yu Qi: "Team leader, what topic did Qingyun draw?" ”

Yu Qi's whole person was already sluggish, he looked at Su Qingyun fixedly, his mind was blank, and he couldn't speak at all.

How could it be the Riemann conjecture? How could it be the Riemann conjecture? Why is it the Riemann conjecture?

If Su Qingyun gets any other topic, Yu Qi will have confidence in her, but Li Man guesses......

Yu Qi also wanted to have information about Su Qingyun in his heart, but ...... Is this the Riemann conjecture? A world-class mathematical conjecture, a mathematical conjecture that no mathematician has been able to successfully confirm for more than a century, how much can he expect Su Qingyun to say?

He had a wry smile on his face, is this God playing tricks on their Huaguo team, obviously everything is going well, victory is just around the corner, but it is the will of heaven that makes people make Su Qingyun draw this difficult question.

At this moment, Yu Qi almost lost confidence in this game.