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In the email, Qiu Chengtong asked about Ning Chen's free time slot so that he could arrange the time for Ning Chen to come to Shuimu University to take open classes.

Although Ning Chen has been very busy recently, fortunately, because of the privileges given to Ning Chen by the school, Ning Chen does not need to attend classes and can arrange his own time.

Ning Chen chose a relatively early time period and replied to Qiu Chengtong's email.

Because this time, Ning Chen went to Shuimu University to take open classes as an expert, so the treatment will be very different from the last time.

Shuimu University will not only reimburse Ning Chen for all transportation and accommodation expenses for this trip, but will also pay Ning Chen an additional labor fee for open classes.

After confirming the itinerary, Ning Chen reported the matter to the school.

Shengzhou University has always been supportive of Ning Chen's exchanges outside. What's more, this time Ning Chen went to Shuimu University as an expert to take an open class. For Shengzhou University, this is also a very glorious thing.

The school readily approved Ning Chen's trip and arranged a car to take Ning Chen back and forth from the airport.

After confirming the itinerary, Ning Chen informed Xu Zhou about the matter.

"Teacher Xu, I'm going on a business trip to Yanjing in a while, and I won't be coming to the laboratory that day."

"Why, are you going to Shuimu University for exchange again?" Xu Zhou asked while drinking water.

"Well, I published a paper on Qiu Chengtong's conjecture a while ago. Professor Qiu invited me to give an open class at Shuimu University to talk about some of the contents of the paper."

After hearing Ning Chen's words, Xu Zhou, who was drinking water, suddenly choked on the water.

"Ning Chen, you... are going to take an open class at Shuimu University?"

You know, Shuimu University’s open courses face the best students in the country.

No, not just students, but also teachers from Shuimu University, as well as experts from all walks of life who came inexplicably from other places.

"Well, yes. I can't help it. Professor Qiu personally invited me, so I can't refuse."

When Xu Zhou heard this, he couldn't help curling his lips. If one day he had the opportunity to go to Shuimu University to give a public class, he would probably wake up laughing in his dreams.

Of course, Xuzhou was sincerely happy for Ning Chen to have such an opportunity.

"It's okay, Ning Chen, just go ahead and go. I'll keep an eye on the experiment every day. There won't be any trouble if you're not here for the time being."

Ning Chen was naturally relieved about Xu Zhou. In fact, Xu Zhou had always been in charge of this experiment, and Ning Chen was in the second core position.

After that, Ning Chen also informed Lin You and Song Xiyun of the news.

Lin You and Song Xiyun both said that as long as Shuimu University allows them to participate in open classes, they will definitely go there.

Even if they really can't go to the open class, they will get together with Ning Chen and show Ning Chen the Yanda campus and so on.

…

After that, Shuimu University officially released news about Ning Chen’s open classes on its official website.

The main targets of this open class are teachers and students from the Department of Mathematics of Shuimu University.

In addition, members who previously participated in Qiu Chengtong's scientific research training camp are also eligible to participate in this open class.

"Ning Chen, I received an invitation from Professor Qiu. Those of us who participated in the training camp before should be able to participate in this open class."

After Lin You learned the news, he told Ning Chen on QQ.

"Well, that's the best. I will stay in Yanjing for a few more days this time, and after the open classes are over, I will go to Yanjing University to see you."

Ning Chen was chatting with Lin You when he also received news from Song Xiyun.

Song Xiyun: "After the open class, I will take you to run 5,000 meters in the evening."

Song Xiyun came up and ran towards Ning Chen. Ning Chen started to tremble when he heard that.

After returning to Shengzhou University from the training camp, Ning Chen would go for a run on the playground at night at first, but later due to too many things, exercise was neglected.

"Sister Song, why don't we just forget about it this time."

"Why, have you been lazy again since I was gone?"

"There are too many things to do. The proof of Qiu Chengtong's conjecture has entered the next stage of research, and the laboratory has taken on another horizontal project. I will definitely continue to practice after I finish my busy work."

"Okay, I won't quarrel with you anymore, see you in the open class then."

"Okay, see you then."

A few minutes later, Song Xiyun sent another message.

"Come on, don't be nervous when you get on stage."

After seeing the message from Song Xiyun, Ning Chen, who wasn't too nervous at first, suddenly became nervous.

Speaking of which, Ning Chen was fully prepared for the upcoming open class.

Because every detail in the paper was completed independently by Ning Chen, no matter what questions the people in the audience asked, Ning Chen was confident that he could answer them smoothly.

But after all, this time, Ning Chen was facing the best students and mathematics experts in the country. Such an occasion would inevitably make Ning Chen nervous.

"Hey, it's better to be nervous now than after going on stage. It's just a public class, there's nothing to be afraid of."

Ning Chen imagined the atmosphere during the open class and tried to adapt himself to this feeling first, so as not to be too nervous when he went on stage.

Fortunately, when Ning Chen was a teacher in his previous life, he also took some large classes. He must have more experience in giving lectures than many people.

…

The day before the open class started, Ning Chen boarded a plane to Yanjing.

With the experience of going to Shuimu University twice before, Ning Chen was already very familiar with this journey.

After getting off the plane, Ning Chen saw Feng Lan waiting at the airport exit.

After the two said hello to each other, Feng Lan wanted to take Ning Chen's suitcase, but Ning Chen insisted on holding it by herself. Ning Chen was embarrassed to ask a woman to help with this kind of thing.

I had to admit that it was very convenient to have someone pick her up. Not far after leaving the airport, Ning Chen got into the car that picked her up.

On the way, Ning Chen and Feng Lan chatted about some topics casually, so that the atmosphere on the way would not be so awkward.

The car stopped in front of a hotel near Shuimu University. After taking a look at the hotel's appearance, Ning Chen knew that it was a very high-end hotel.

Feng Lan led Ning Chen to the reserved room. After opening the door, Ning Chen was shocked by the environment inside.

Although it was only a single room, the room was very spacious, even more spacious than the largest bedroom in Ning Chen's house.

All the furnishings in the room were very luxurious. Ning Chen felt that this must be the top single room here.

Ning Chen estimated that the room rate for one night here should reach four figures.

"Ning Chen, you take a rest here first. If it's convenient for you, Professor Qiu would like to come over and have a chat with you later."

"Mr. Feng, I'd better go to Professor Qiu's place."

Ning Chen was embarrassed to let Qiu Chengtong take the initiative to come to him. After all, he and Qiu Chengtong were students and teachers.

"This is something Professor Qiu specially told me. You are a guest this time, so you don't have to be polite."

Under Feng Lan's repeated emphasis, Ning Chen had no choice but to accept this method.

After Feng Lan left, Ning Chen simply packed up his things and then lay on the bed to rest.

Although the whole journey was not long, Ning Chen still felt more or less tired. Before Qiu Chengtong came over, Ning Chen had to adjust his condition to the best.

The bed in the hotel room was very warm and soft. After taking a nap, Ning Chen felt that his fatigue had subsided a lot.

After a while, Feng Lan sent a message to Ning Chen, asking Ning Chen to have dinner at the hotel first, and Qiu Chengtong would go there after dinner.

When he checked in before, the waiter had already given Ning Chen meal coupons for the past few days. Ning Chen came to the restaurant. The hotel restaurant was self-service and the quality of the food was very good. Ning Chen couldn't fault it.

At about 7 o'clock in the evening, the doorbell of the room rang. Ning Chen looked through the peephole and found that it was Qiu Chengtong and Feng Lan who were outside the door.

"Professor Qiu, you are here, come in quickly!"

"Ning Chen, we meet again. How is it? Are you satisfied with this room?"

"Haha, I was used to living in student dormitories before, but suddenly living in this kind of room is really uncomfortable." Ning Chen said with a smile.

After the two exchanged pleasantries, Qiu Chengtong mentioned something about Ning Chen's last paper.

"Ning Chen, I said before that this is a result that can be published in the four major journals. How about it, the facts prove that I was right?"

"I also have to thank Professor Qiu for his careful guidance."

"Okay, don't be polite to me. Ning Chen, do you have any ideas about the next research direction?"