Liu Xing's face twitched violently, anger appeared in his eyes, and then he thought of something and smiled again.

"Say whatever you want. Jiang Shixing, since you wasted three years just to recruit your learning waste sister, you will never be able to compare to me. ”

"Now that Ruan Qing is already my student, with her talent, it is estimated that it will not be long before she can help me break through the current bottleneck and go further in research."

Jiang Shixing didn't even raise his eyelids a little more: "So, you are showing off to me, you now even have to rely on a freshman who has just entered the school to break through your own bottleneck?" ”

The corners of Liu Xing's mouth twitched fiercely!

tmd！

When he breaks through the bottleneck and becomes the first person in the national mathematics community, he must make this damn Jiang Shixing laugh at him and can't hold his head up!

Jiang Shixing watched Liu Xing leave coldly, and sighed a little tiredly for a while.

Although he doesn't look down on Liu Xing's actions, in fact, he is currently facing the same predicament as Liu Xing.

In fact, this is a common challenge faced by all top researchers......

My own research has touched the peak of the current level, if I can't find a new breakthrough or idea, I can only be stuck here in this life, and it is difficult to take a step forward!

The paper that Jiang Shixing is currently preparing was originally intended for publication in the top journal "SUA" in the field of mathematics, but it turned out to be prepared for three years, but he could not write it again because he could not find new ideas......

Thinking of this, Jiang Shixing couldn't help but sigh wistfully: "I don't know if I can be lucky enough to meet someone who provides me with new ideas in my life......"

"Second brother!" A sweet, clear voice sounded in the doorway.

Jiang Shixing retracted his thoughts, turned his head to look, and saw a sweet-looking girl standing at the door, waving at him with a smile: "I'm Ruan Yao, I'm looking for you~"

This is his sister who has just been recognized?

A trace of surprise flashed in Jiang Shixing's heart.

Before, he heard from his eldest brother that this younger sister grew up in a small family, and she didn't study well, and her academic performance was poor, and his impression of her was actually very bad.

Although out of family friendship...... is also to prevent the Jiang family from the shame of having a college diploma, he used the condition of working for the principal for three years as a day job for three years to change an admission notice for this sister, but he did not have any expectations and likes for her in his heart.

But now looking at Ruan Yao, who is generous and clean and bright, Jiang Shixing has a faint feeling of goodwill in his heart.

He suppressed his troubles in his heart and said to her, "Come in." ”

Ruan Yao pushed open the door and walked in.

The first thing she saw was the various calculations plastered all over the wall......

It's so strong!

Shouldn't the second brother be immersed in the ocean of mathematics 24 hours a day...... Ruan Yao thought with admiration in her heart, and took in the entire office.

The office is not big, it is well organized by the second brother, and on the large desk, there is nothing extra except for various tools such as rulers, pencils, and computers.

There was a pot of greenery by the window, but the leaves were already a little sluggish, and it was obvious that they had not been taken care of for a long time.

"Second brother!" Ruan Yao obediently walked up to the man with a cold and arrogant expression, reached out and took it out of her bag, and handed over the gift she had prepared urgently just now.

"This is a gift I specially prepared for my second brother. There are all kinds of mathematical formulas and ideas I have learned about it, and I hope that the second brother will like it. ”

Jiang Shixing's eyes fell on the blue book in Ruan Yao's hand.

It's just a very ordinary, dollar-a-copy notepad.

"You've got a heart." Jiang Shixing didn't think that Ruan Yao could understand anything useful to him, and after taking it, he wanted to put it on the table casually.

As a result, in the next second, I saw Ruan Yao's eyes staring at his hand with burning eyes, and the anticipation in his eyes was about to overflow.

Jiang Shixing's hand paused: ......

Although it is of little use to him, my sister, a university scumbag, has obviously taken a lot of effort and effort to collect these.

In order not to disappoint his sister, Jiang Shixing endured the boredom in his heart and turned the first page-

NP is totally problematic.

Well? What is it?

Jiang Shixing's eyes froze, and a cluster of flames suddenly ignited at the bottom of his cold and alienated eyes.

He didn't even care about Ruan Yao, who was still waiting, he quickly got up, picked up the pen on the table, and instantly immersed himself in his thoughts.

Seeing that Jiang Shixing liked it so much, Ruan Yao breathed a sigh of relief without a trace.

In this way, the second brother should not care too much about the fact that I am an ordinary person...... Seeing Jiang Shixing frowning and thinking for a long time, and then turned the second page, Ruan Yao simply moved a chair and sat down to wait for him.

After waiting for more than an hour, Jiang Shixing finished reading everything Ruan Yao had written before he took a long breath.

He stood up from his desk and turned his head to look at Ruan Yao, his eyes were no longer as cold as before.

Jiang Shixing asked Ruan Yao with a little excitement: "Little sister, how do you know about these problems?" ”

NP Complete Problem, Hodge Conjecture, Poincaré Conjecture...... Each one of them is a mathematical problem that Jiang Shixing has never seen and has never imagined!

Although he couldn't find the solution to the problem at all, these problems brought new vitality to his rigid thinking and brought a breakthrough to the bottleneck that had been bothering him!

Jiang Shixing dares to guarantee that any leak of these problems will be enough to cause national ...... No, a global sensation!

I was forced to memorize it by my mother in my last life...... Ruan Yao appropriately showed a touch of confusion and incomprehension of the scumbag, and said with some trepidation: "Just, I wanted to find a special symbol in mathematics for my second brother as a meeting gift some time ago......

"Then when I searched on the Internet, I clicked into a lot of messy websites...... I found the questions on some websites strange to me, so I copied them down. ”

Jiang Shixing glanced at Ruan Yao deeply.

Of course, he didn't believe what she said, but the little sister had given him such a precious treasure, and he didn't have to explore the secret she wanted to hide.

Immediately afterwards, Jiang Shixing thought of something, and suddenly said, "What kind of mathematical symbol puzzle did you ask your eldest brother before, was it given to me?" ”

How could the second brother know about this?

Jiang Shihan can't be a big mouth, right?

Ruan Yao complained in her heart, but nodded quietly on the surface: "That's right!" ”

Jiang Shixing's hand holding the notebook tightened, and a warm current suddenly surged in his heart, and he felt a deep apology for Ruan Yao.

No wonder my little sister didn't ask me, it turned out that she was here to surprise me...... And I deliberately snubbed her because I misunderstood that she didn't trust me......

I'm just too much...... My little sister worked so hard to prepare a meeting gift for me, but I would only care......

Thinking like this, Jiang Shixing's eyes became more and more gentle when he looked at Ruan Yao: "What symbol are you going to give me?" ”

With my little sister's heart, no matter what she comes up with later, I must praise her fiercely and respond to her needs!

Then, he saw Ruan Yao draw an ugly equilateral triangle in this book, and then looked at him expectantly: "Second brother, can you insert this symbol on every page of the paper you are writing?" ”

Jiang Shixing's expression froze.