After listening to the conversation between the father and daughter, Wang Yufei probably understood why Lu Qingyun chose to return to Pengcheng the next day, instead of spending more time with his daughter in Star City.

Wang Yufei did not make any comments.

Every family has its own way of getting along, Wang Yufei doesn't want to interfere too much, but deep down he really hopes that Lu Qingyun can think about the future more thoroughly.

But come to think of it, he should be proud of his daughter, right?

......

The two tacitly did not tell Guo Jiafeng and Han Qian that Lu Qingyun had come to Star City.

After coming, he didn't meet the adults, Guo Jianfeng thought more about Han Qian.

And then it's really the busy phase.

Yu Xingwei is right, there are too many places where the two sides need to do technical communication.

When the chip design begins to be tested in Weihua's professional laboratory, Weihua's engineers will sort out a huge number of questions that need to be answered every day.

Unlike the previous massive amount of data that had to be analyzed by the lab, this time the problem needed to be explained in detail.

Lu Qingyun played a good role as a bridge in it.

Because it is a technology itself, it is very easy to get started.

The team of engineers involved in the verification test for Weihua is too large, and it is impossible for everyone to go to Wang Yufei and Lu Yuxin if they have problems, so Lu Qingyun took on the important task of summarizing the problems and sorting them according to their priorities, and then communicating with Wang Yufei and Lu Yuxin.

This is probably the most important purpose for Yu Xingwei to bring Lu Qingyun to his current position.

Others to communicate, because the two sides have different understandings of a technical parameter, may directly slap the table and affect the relationship between the two parties.

But let Lu Qingyun go up obviously without this kind of trouble.

Whether it is the father-in-law slapping the table on the son-in-law, or the son-in-law slapping the table at the father-in-law, it is an internal conflict in the family. At most, it would be nice to say a few words in the middle of being a daughter after filming......

Of course, it is more likely that the two sides can always maintain a harmonious and friendly atmosphere of father and son filial piety to discuss issues.

Of course, this is also a good way for Lu Yuxin and Lu Qingyun to communicate.

Basically, the three of them need to communicate by video for more than three hours every day, and most of the rest of the time is also through the superfast virtual machine developed by Wang Yufei for remote sharing operations.

One problem after another is quickly resolved with this kind of full and unreserved communication between the two parties.

For example, Wang Yufei analyzed the activity rules of some information from the massive brain activity data obtained from Gao Deyuan's laboratory, and then designed a separate module and operation unit, with a unique algorithm, to filter homogeneous invalid information.

However, in the eyes of engineers who do not understand Wang Yufei's design ideas, this module will feel that it conflicts with the information filtering function in another receiving module, so at this time, only Wang Yufei can explain the difference between the two filtering signals in detail and give the test data here to be convincing.

Such days are called fast.

The efficiency of the Weihua side is very high, and there are a bunch of problems that need to be exchanged every day.

In order to ensure the success rate of tape-out, any small error in the professional laboratory requires both parties to communicate the initial design again and again.

This form of work is different from the previous two people working behind closed doors at home.

After all, you can't delay the progress of others, and it is a well-known hard work for Hua's engineers to do things.

The whole of April passed in this hectic atmosphere like a war.

It is worth mentioning that Vice Principal Guo took over the work of preparing breakfast for the family every day under the persuasion of Comrade Han Qian, an excellent class teacher.

This also freed up a lot of time for Wang Yufei, because the communication with Weihua often started before dawn.

It seems that Wang Yufei is definitely not the only one who doesn't have to sleep every day......

Although Comrade Lao Lu is a lot older, he is still energetic!

......

May 8, 2019, 12 a.m.

When the second hand walked to the 12 position, Lu Yuxin walked directly to Wang Yufei, who was following Lu Qingyun's video, stretched half of his head into the camera, and said to his father on the other side of the video: "Today's communication is at this location, and it will extend for 24 hours from now on, this man only belongs to me and is not open to the public." So you can also take a day off. ”

"Ah, why?" Lu Qingyun immediately asked.

"Because today is Wang Yufei's birthday!'s first birthday after I met him!" Lu Yuxin replied immediately.

"Well, I wish you a happy birthday. ”

Lu Qingyun said a word, then thought about it, and then spoke: "Well, although it is indeed important to celebrate your birthday, it may be a bit disappointing to say this, but I still want to remind you that you are still young." ”

This sentence made Wang Yufei a little embarrassed.

Sure enough, adults are not very pure-minded beings!

Even if it's a very boring adult!

Does this probably mean that Lu Yuxin is afraid that she will give herself away as a birthday gift?

"Man, you're enough!"

Lu Yuxin threw out this sentence expressionlessly, and then hung up the video directly.

Wang Yufei scratched his head and said with some embarrassment: "If you don't remind me, I don't remember it myself." ”

"It doesn't matter if you don't remember, a lot of people will. Lu Yuxin's face was a little red, obviously Lu Qingyun's words just now still stimulated this little girl.

"Well, well, I guess you got me a birthday present. Wang Yufei looked at Lu Yuxin and said.

"Of course, you close your eyes first!"

Wang Yufei closed his eyes with kindness.

As a result, the expected intimate contact did not come, but the sound of the girl's breathing was lost, about three minutes later......

"It's time to open your eyes!"

Wang Yufei opened his eyes and saw Lu Yuxin holding a heavy book and sending it to him.

"This is my birthday present to you, and I spent about a year searching through all the math problems I was interested in, and my thought process. Although I haven't been able to solve a single question completely, I've thought about it all!"

"I'll leave it to you!"

Wang Yufei took the big book in surprise and opened it very seriously.

What catches your eye is rows of beautiful small characters.

"Are there infinitely many Mersenne primes?"

What follows is the process of thinking and arguing in the big row.

"Narvestokes Equation Derivation. ”

Zhou conjecture. ”

Polignac guessed. ”

Jacobi conjecture. ”

......

Poincaré conjecture. ”

"The four-color problem. ”

"Fermat's theorem. ”

Goldbach conjecture. ”

......

Keep scrolling back.

Hilbert [new] twenty-three asked. ”

Riemann conjecture. ”

“N=NP?”

In a handwritten, thick and oversized book, nearly 100 mathematical conjectures were recorded.

There are not only little-known mathematical problems, but also classic problems that have plagued mankind for centuries, and mathematical problems that are of great guiding significance for the development of science and technology.

The categories are organized in a book.。

It also includes the process of thinking and solving problems in the girl's spare time.

Perfect!

"I love it so much! Thank you, Yu Xin!"