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Xu You knew that Huang Sibai had been in Shanghai recently, and it was not easy to come to Jijing University.

"It's been fine recently, and I just want to go back to the head office, so I came to see you." Huang Sibai said with a smile.

Hearing what Huang Sibai said, Xu You finally didn't have any psychological burden.

After a few simple inquiries, Huang Sibai began to explain to Xu You his latest achievement in detail.

"Professor Xu, my recent research is about the three-dimensional mask imaging technology of EUV lithography machine."

"Three-dimensional mask forming technology?" Xu You asked.

"Yes, Professor Xu. The 3D mask imaging technology has a great impact on the quality of EUV lithography imaging. The 3D mask imaging model is the basis for EUV lithography imaging simulation."

Simply put, the working principle of a lithography machine is somewhat similar to that of a camera.

The light emitted by the photolithography machine can expose the thin film coated with photoresist through the mask with pattern.

When the photoresist is exposed to light, its properties will change, so that the pattern on the photomask is copied to the sheet.

In this way, the sheet has the function of an electronic circuit diagram.

However, unlike the two-dimensional imaging of a camera, the electronic components and circuit diagrams etched by a lithography machine are three-dimensional imaging.

This is the significance of Huang Sibai's achievement.

Listening to Huang Sibai's explanation, Xu You became more and more excited.

"Huang Gong, have you brought the relevant information? Can you let me have a look at the more detailed content?"

"Well, Professor Xu, I brought it, wait for me to turn on the computer."

It was also the first time for Huang Sibai to have an academic exchange with Xu You, and he seemed a little nervous and excited.

Huang Sibai did not expect that Xu You would ask so carefully these academic questions that do not belong to his field.

Xu You's professional level is not even inferior to those researchers in the EUV lithography machine project team.

"Huang Gong, the calculation of the diffraction spectrum of the mask here is obtained through Fourier transform, right?" Xu You asked, pointing to a place in the data.

"Yes, Professor Xu, when the mask thickness is small and the mask pattern size is large, the mask diffraction spectrum can be calculated using a thin mask model. Through Fourier transform, the result of mask Kirchhoff far-field diffraction is obtained... ..."

"Huang Gong, is the property of Hermitian symmetry used here?"

"That's right. In order to further improve the computational efficiency of the Hopkins imaging model, the singular value decomposition of the TCC matrix can be performed according to the Hermitian symmetry, and this formula can be truncated..."

In order to answer each of Xu You's questions, Huang Sibai was already sweating profusely from exhaustion.

This feeling of fatigue is not due to physical exhaustion, but a large amount of mental exhaustion.

But Xu You enjoyed this learning process very much, with a relaxed and joyful look on his face.

Now Xu You can easily solve various scientific research problems without entering the state of deep learning.

For Xu You, the state of deep learning is just like an accelerator.

At this time, Huang Sibai wiped the sweat from his forehead, and tried to ask:

"Professor Xu, may I know some information about Godson G1? This will be helpful to our research on lithography machines."

Xu You was taken aback when he heard the words: "Godson G1? This chip does not use the technology of EUV lithography machine."

Huang Sibai quickly waved his hands and said, "No, it's our next-generation chip, which should be improved based on Godson G1. Knowing more about these chips will definitely be beneficial to the research and development of chip processing technology in the future."

Huang Sibai's words are reasonable, but Xu You will definitely not take out these key materials casually.

"Huang Gong, I am very glad that you are able to take the initiative to understand this knowledge. This kind of work enthusiasm is very worth advocating. Of course, such information is not so easy to come up with. Let's talk about it later .”

Xu You politely rejected Huang Sibai's request, Huang Sibai also saw what Xu You meant, and didn't dare to mention anything, frowning slightly.

At this time, Xu You noticed that there was something wrong with Huang Sibai's expression.

This is some micro-expression analysis that Xu You learned from Lu Zhiyao. Lu Zhiyao is not only good at philosophy, but also has some achievements in psychology.

From Huang Sibai's micro-expression, Xu You could see that Huang Sibai seemed to be somewhat reluctant to reject him.

This kind of reaction is not like what should appear in this situation under normal circumstances.

"Huang Gong, why didn't you continue working at ASML?" Xu You asked suddenly.

"Well... Maybe I still want to go back to China. After staying abroad for so many years, I haven't really found a sense of belonging. Just because I had such an opportunity, I decided to go back to China."

According to Huang Sibai's personal resume, Huang Sibai has been studying abroad since middle school.

If China hadn't made such rapid progress in technological development in the past few years, it would have been difficult to attract outstanding researchers like Huang Sibai to come back.

Seeing that Huang Sibai didn't want to talk too much about his own experience, Xu You didn't ask any more questions.

"Okay, Huang Gong, I won't bother you any more. This result is really good. I hope you can make more excellent results and let us have the first independently developed EUV lithography machine as soon as possible."

"OK, Professor Xu, I will definitely continue to work hard. If possible, I also hope that I can take on a more important role in the company."

Xu You naturally hopes that researchers like Huang Sibai, who have experience working in leading overseas technology companies, can take on more arduous tasks.

But for now, Huang Sibai has only joined the company for a few months, so he needs to investigate for a while longer.

"Don't worry, we will see everything. We will definitely let truly capable people lead the research and development of the project."

After Huang Sibai left, Xu You closed his eyes tightly and sorted out everything that happened just now.

Less than a minute later.

Xu You took out his internal communication device and called Wu Jing.

After a few beeps, the phone was connected.

"Mom, is it convenient to talk now?"

"Convenient. What's the matter?"

"Have the identities of those researchers who returned to China through the 'Overseas Talent Program' been strictly verified?"

"The identity has been verified, and the information must be true. However, they have stayed overseas for at least a few years, and we have no way of knowing what they have experienced during this period. Why, have you found any doubts?"

"It's not a suspicious point, it just has some weird feelings, but I can't be sure."

Xu You told Wu Jing what happened just now, as well as his own guesses.