The dinner didn't end until about 10 p.m.

Duan Yun originally thought that the three artillery and a literati director like Li Bin would be difficult to get along with, after all, they were one writer and one martial artist, but the actual result surprised Duan Yun.

The group of Sanpaillan looked rough-looking, but they were still very 'sensible', and after the banquet began, they called Li Bin a brother, and several people took turns to toast and start a wheel battle.

Chen Jia, who was sitting with him, also toasted Li Bin a few glasses, and the atmosphere of the dinner was very active.

So much so that in the end, Li Bin vomited twice, and in the end, Chen Jia drove him home.

After this matter was done, Duan Yun had a knot in his heart, and went back to sleep.

The next day, Duan Yun still got up early in the morning.

Now Duan Yun has nothing to do in Kyoto, and Chen Jia is responsible for arranging the company's affairs, and he plans to return to Heyang after staying in Kyoto for a few days.

Alone in the apartment, Duan Yun can finally focus on his math problems without distraction.

Nearly half a year has passed since he started studying Hodge's conjecture to now, but Duan Yun still hasn't figured out a clue.

However, after thinking about the computer screen for a whole morning, Duan Yun finally seemed to have some clues.

After a simple meal at noon, Duan Yun sat down in front of the computer again.

The method he tried for the first time today was very cumbersome, but only halfway through the verification, Duan Yun found that this method had loopholes and had a lot of mistakes.

In desperation, Duan Yun began to try the second method.

Minutes and seconds passed.

The Hodge conjecture is indeed a very wonderful math problem.

Every time Duan Yun found a new method to verify, he seemed to have seen the dawn of victory, but in the last few steps, he found that the theory was not valid, which made Duan Yun feel a little helpless.

From morning to evening to early morning, then to the next day......

Duan Yun seemed to have entered a demonic state, and his research on this Hodge conjecture had reached the level of serious obsession.

He had never studied a problem so attentively and frantically, and this math problem was indeed an unprecedented challenge for Duan Yun!

Compared with his previous research on cryptography, Hodge's conjecture involves more and more responsible knowledge of all aspects of mathematics, which not only requires a very high knowledge threshold for problem solvers, but also a super challenge to human thinking and imagination!

The next day, Duan Yun tried several more methods, but in the end they were still in vain.

The third day, the fourth day was still the same.

By the fifth day, Duan Yun had already begun to feel a little physically exhausted, due to the lack of sleep in the past few days, Duan Yun's spirit was a little decadent, and the computer screen he occasionally stared at began to blur.

But suddenly, a new idea for solving the problem flashed through Duan Yun's mind, and Duan Yun quickly tapped the keyboard, and strings of formulas and data appeared on the screen.

Despite his exhaustion, Duan Yun still tapped the keyboard quickly and skillfully, and spent the whole morning listing a set of complex and advanced arguments.

To Duan Yun's surprise, the verification data seemed to be valid, and after a brief review, Duan Yun didn't seem to find any loopholes.

If all the data theories are correct, then Duan Yun can sort it out and become his first paper.

However, Duan Yun was still a little uneasy, after all, the physical exertion in the past few days was too great, and the energy was a little insufficient, and there might still be omissions in such complex data and formulas, so Duan Yun planned to check the calculations a few more times.

However, at this moment, the mobile phone next to the table rang.

Duan Yun picked up his phone and looked at it, and found that it was Yang Ying calling.

"Hey. After connecting the mobile phone, Duan Yun put it to his ear.

"Duan Yun, where are you?" Yang Ying's voice came from the other end of the microphone.

"I'm at home. ”

"I'll look for you, you wait for me at the gate of the community. Yang Ying said to Duan Yun in a commanding tone.

"I'm ......" Duan Yun was about to shirk it, after all, he was a little tired at this time, but Yang Ying hung up the phone directly after finishing speaking.

After putting away the phone, Duan Yun shook his head helplessly, walked to the bathroom and wiped his face with cold water, put on his clothes and left the apartment.

After walking to the door of the community, Duan Yun's spirit was still a little sluggish, so he took out a cigarette from his trouser pocket, lit it, and took a puff.

At the corner of the street in the distance, a red Porsche ran out and appeared in Duan Yun's field of vision.

Judging from the model of this car, it seems to be a new model, which seems to be rare in a city like Kyoto, where the rich are gathered.

The next moment, the red sports car got closer and closer, and finally stopped in front of Duan Yun.

The moment the car door was pushed open, a beautiful figure appeared in front of Duan Yun.

Fresh and neat short hair, delicate and beautiful five senses, sky blue tweed coat cut fit, faintly visible delicate figure, white snow boots strolling in, making people feel more pure.

Yang ...... Yang Ying!?" When Duan Yun saw that this girl was Yang Ying, the cigarette in his mouth almost fell to the ground.

"With so little to wear, you're not afraid of catching a cold. Yang Ying stepped forward and asked with concern, then stepped forward and reached out to grab the zipper on Duan Yun's neck, and then said, "What about the scarf I knitted for you last time, why didn't you wear it?"

"Ah, it's not been too cold these two days, so I don't need a scarf. Duan Yun replied after hearing this, and then asked curiously: "This car...... Is it yours?"

"Well, my grandfather bought it for me. Yang Ying nodded when she heard this.

"Your grandfather is really rich. Duan Yun said in surprise.

"Get in the car. Yang Ying motioned for Duan Yun to sit in the co-pilot seat, and pulled the car door to sit up.

"That's awesome. After Duan Yun got into the car, he touched the leather seats and luxury built-in, and said, "This car has to be millions, right?"

Duan Yun bought a car some time ago, and also paid attention to the price of the car, according to his judgment, this Porsche is about three or four million, and this price is only the price of a naked car, plus various luxury top configurations, at least nearly five million prices!

"I don't know how much money it is, it's not cheap anyway. Yang Ying replied lightly.

"What kind of business did your grandfather do at that time?" Duan Yun couldn't help but ask curiously.

"You'll find out later. Yang Ying didn't answer directly, but just smiled at Duan Yunwei.

"Is this necessary to be kept secret?" Duan Yun pouted when he heard this.

"Yes!" Yang Ying pursed her lips and smiled, then took out a handbag from the compartment at hand, and said to Duan Yun, "By the way, I have a gift for you." ”

"What gift?"

"Wow. I saw Yang Ying take out a pair of woolen gloves from her handbag and say to Duan Yun, "See if you like it?"