"I can do either, or tomorrow morning. If there's not enough time in the morning, I also have time in the afternoon."

Zhao Xiancai said.

After setting the time, they chatted about other topics.

However, for someone as young as Zhao Xiancai who has achieved such high achievements, he will naturally become the focus of discussion wherever he goes, and this time is no exception.

Fortunately, Zhao Xiancai was quickly sent to the door of the hotel, and finally he no longer had to listen to Yang Gang and Gong Qi talking about his affairs.

After being sent to the hotel entrance and returning to the hotel, Zhao Xiancai quickly washed up and went to bed.

After chatting with Professor Gong Qi all morning the next day and getting to know his current team, Zhao Xiancai did not decide to join Professor Gong Qi's research team this time.

This time Zhao Xiancai chose to refuse, mainly because he was not as free as last time.

Moreover, he felt that increasing the conversion efficiency of silicon-based solar cells from 26.7% to 26.8%, which in Gong Qi's view was already a very outstanding achievement, was nothing.

However, Zhao Xiancai did not tell Professor Gong Qi about his thoughts on this matter.

He knew that if he really told them, even if he was now a master in the field of mathematics, he would probably only be regarded as a layman speaking layman's language by them, and he would even be looked down upon.

After all, the words "separated lines are like mountains separated" are not just casual remarks, and the research on silicon-based solar cells conducted by Professor Gong Qi and his team also falls within the category of theoretical physics.

Zhao Xiancai is a person who studies pure numbers. If you say that he has some research on theoretical physics, it would still be somewhat reasonable.

But if you say that he has done so much research on theoretical physics, I am afraid no one will believe it.

More importantly, due to the existence of the Shockley-Queenser limit, the actual conversion efficiency of this type of battery is also approaching the theoretical limit efficiency, which is almost reaching its peak.

Therefore, no matter how much research is done, it is difficult to make any big breakthroughs, so Zhao Xiancai does not want to waste time on this.

If he really has the energy and time, he might as well study controllable nuclear fusion first, and then accumulate points to ask questions about the system if he can't solve the problem.

As for the matter of light quanta related to the Shockley-Kuiyinser limit, although Zhao Xiancai is interested, he doesn't know much about it because Professor Gong Qi hasn't started experiments in this area yet.

Therefore, Zhao Xiancai did not join in because of the matter of light quantum.

After finishing things with Professor Gong Qi and dealing with some matters at Peking University, and preparing to leave the capital and return to Chengxian to see his parents, Zhao Xiancai suddenly thought of something.

"Would you like to see Yu Shujun?"

When this idea appeared in Zhao Xiancai's mind, he immediately gave himself a negative answer.

Although Zhao Xiancai had always had a good relationship with Yu Shujun before, Yu Shujun confessed to him after all, and Zhao Xiancai has no intention of finding a partner in the short term.

Therefore, he did not want to bring any more hope to Yu Shujun, so he did not take the initiative to find Yu Shujun this time.

But sometimes you don’t come to the mountain, but the mountain will come to you.

Just when Zhao Xian just returned home, Yu Shujun sent him a message.

"I heard that you have returned to China? Are you at Beijing University now? Will you return to Chengxian?"

"Huh?"

Zhao Xiancai was a little confused when he saw the message from Yu Shujun, because Yu Shujun had not contacted him for a long time, which was one of the reasons why he did not go to Agricultural University to find her.

"I'm back. Peking University invited me to come back and give a lecture on Goldbach's conjecture.

That speech report is over, and I have returned to Chengxian’s hometown now.”

Zhao Xiancai explained in his reply.

After Yu Shujun sent the message to Zhao Xiancai, she was anxiously waiting for Zhao Xiancai's reply.

But after seeing Zhao Xiancai's reply, Yu Shujun didn't know what to reply.

"But...if he doesn't come back, what does it have to do with me?

He is already a full professor at Princeton University. This time he came back and was invited by Beijing University to give a lecture. It was not because of me.

And now I am just an ordinary female student who is about to enter her junior year at the Agricultural University. Let alone graduate early, I can’t even get the first grade in my grade.

Alas:-(, why did the gap suddenly become so big?"

With this thought in her mind, and after thinking about the huge gap between herself and Zhao Xiancai, Yu Shujun didn't know what identity she should use and how to communicate with Zhao Xiancai.

When she first confessed to Zhao Xiancai, Yu Shujun already felt that the gap between her and Zhao Xiancai was very big. At that time, she mustered up the courage to confess to Zhao Xiancai.

She originally thought that after entering college, as long as she worked hard, she should be able to shorten the gap with Zhao Xiancai.

Although Agricultural University is not as good as Beijing University, it is still a 985 institution, right?

But what she didn't expect was that the originally large gap between her and Zhao Xiancai would widen so quickly in the past two or three years, and now it is so big.

After a while, she sent another message to Zhao Xiancai.

"You're coming back to see your parents, right? When are you leaving?"

"I'll leave tomorrow and go back to Princeton. There's something going on there."

"I heard that your family moved to the county?"

"Well, I won some awards before and bought some bonuses for my parents to buy a house in the county."

As Yu Shujun, who has been paying attention to Zhao Xiancai, she naturally also knows that Zhao Xiancai has won various mathematics awards.

So she also knew that what Zhao Xiancai said about winning some awards and receiving some bonuses was not something in the ordinary sense.

The $3 million prize for the Mathematics Breakthrough Award alone is worth almost 20 million Soft Girl coins.

What ordinary 20-year-old young man calls "some" bonuses, is a bonus of 20 million soft girl coins?

Even if you win the lottery, it is difficult to win so much money, and you still have to pay taxes on the lottery.

And Zhao Xiancai's words made Yu Shujun even more aware of the current gap between them.

"how do you know?"

Seeing that Yu Shujun seemed to understand his own affairs relatively clearly, Zhao Xiancai also asked with some curiosity.

Seeing this sentence from Zhao Xiancai, Yu Shujun was a little panicked. It was impossible for her to say that she had been secretly paying attention to everything about Zhao Xiancai.

Fortunately, the two of them were chatting online rather than face to face, so Yu Shujun had enough time to explain, and Zhao Xiancai couldn't notice the expression on her face.

"The fact that you returned to Beijing University to give a speech was reported on the People's Daily Online, and it even became a hot search topic. Of course I know about it."

"Enter the People's Daily? Did they report it?"

After seeing Yu Shujun's reply, Zhao Xiancai was a little surprised, because in the few days after returning to China, he had been busy and had no time to surf the Internet. Naturally, he didn't know about the people's network reporting on him.

"Well, not only the official website, but also many media have reported on it."

…

The two of them didn't chat for long this time, and they didn't talk much.
Chapter completed!