Start as a top student and move towards the stars and the sea

Playing cards makes time fly by quickly, and before you know it, it’s lunch time.

The lunch delivery guy is here, let's eat first, Liao Jun said.

Although the lunch boxes on the train are very expensive, Liao Jun still bought a box for everyone. After all, everyone has to take the exam tomorrow, so they must eat well and cannot just settle for instant noodles.

Tong Yicheng tallied up the scores of the three-player Landlords match. Ning Chen was far ahead with +68 points, while Liao Jun and Tong Yicheng both had poor scores.

While eating, everyone chatted.

It's just such an ordinary lunch box. It costs 25 yuan on the train. It's not as good as the 8 yuan set meal in our cafeteria.

There's no other way. I have to overcome it when I'm out. At least the school can reimburse me for lunch boxes, otherwise I'll have to eat instant noodles.

When you get off the train, you must have a good meal first. After you finish taking the main subjects, and you can still walk around the Ice City, it will be regarded as a trip at public expense.

Ning Chen silently listened to everyone's chat and couldn't help but recall it in his heart.

This lunch box, priced at 25 yuan a piece, would have been something Ning Chen would have been reluctant to buy.

After all, money is not that easy to earn. With this money, you can eat several buckets of instant noodles, and you can also add some intestines.

Ning Chen could only think about it after the dining car went back and forth again and again and the price of boxed lunches continued to drop.

After reviving his life, although Ning Chen still doesn't have much money, he definitely won't worry about a 25 yuan box lunch anymore.

After lunch, Tong Yicheng took the initiative to help Ning Chen pack the lunch box. Ning Chen couldn't persuade him no matter how hard he tried, so he had to give up.

Liao Jun suggested that everyone stop playing cards. After all, they will arrive at Bincheng in a while, so they can take a rest at this time.

Ning Chen also leaned on the back of the chair and closed his eyes to rest.

Ladies and gentlemen, the stop in front of the train is Bingcheng Station. Please bring your belongings and prepare to get off in advance.

After hearing the conductor's voice announcement, many people on the train picked up their things and lined up in the aisle.

Ning Chen didn't queue up. Anyway, Bingcheng is a big station. He could just wait a while and follow everyone else.

The school had booked a bus in advance. After leaving the station, everyone took the bus and headed to a hotel near the Ice Institute of Technology.

The conditions of the hotel are generally pretty good. Although the room booked is a triple room, it is still relatively spacious.

Everyone will rest in the hotel for a while, and then we will go to a nearby restaurant to have dinner together. After dinner, we will go to the Ice Institute of Technology to familiarize ourselves with the examination room.

After explaining the arrangements for a while, Liao Jun asked everyone to arrange their own time, as long as they did not leave the hotel.

After just experiencing a seven-hour drive, everyone was a little tired, and many students were lying on the bed to rest.

Ning Chen felt that his physical condition was not bad. After a little exercise, he sat on the desk and started studying.

At five o'clock in the afternoon, Liao Jun took everyone to a nearby restaurant for a meal. Because many people didn't eat well at lunch, everyone enjoyed this meal.

After having dinner, everyone came to Bingcheng University of Technology together.

The hotel where Ning Chen and others stayed was only a few hundred meters away from Bingcheng University of Technology and could be easily reached on foot.

This was the first time for Ning Chen to come to the University of Ice and Technology. Regarding the campus environment of the University of Ice and Technology, Ning Chen did not feel that it was very special, but the University of Ice and Technology gave Ning Chen a feeling of a very strong academic atmosphere.

According to Ning Chen's college entrance examination results, there is a certain distance from the University of Ice and Technology. Some students would also jokingly call the University of Ice and Technology the local little water tree.

After getting familiar with the examination room, Liao Jun took everyone around the campus and then returned to the hotel.

Everyone have a good rest tonight and go to bed early. The first written test will begin tomorrow morning. Especially for students with concurrent studies, these two days will be very hard, so you must adjust your condition.

In fact, if you only take the exam for one subject, it will be relatively easy. However, if someone like Ning Chen participates in all five subjects, the challenge will still be huge.

Ning Chen didn't dare to relax at all. After returning to the room, he read for a while and then climbed into bed early to rest.

The next morning, Ning Chen woke up naturally at 6:30, and his overall condition was still very good.

After the continuous strengthening of the mental index, Ning Chen's energy is much stronger than that of ordinary people. Coupled with regular exercise, Ning Chen's physical strength is also not bad.

After washing up and eating breakfast, Ning Chen came to the examination room with other candidates participating in the first subject examination.

This is the first time Ning Chen has participated in a competition of this level in his two lifetimes, which makes Ning Chen feel a little nervous.

However, this slight tension will not have a negative impact on Ning Chen's state. Instead, it will make Ning Chen face the exam in a better state.

As the exam neared the start time, the invigilator began to hand out papers. Ning Chen took the paper and started reading from the beginning.

S-T. Yau College Student Mathematics Contests 2010 (Qiuchengtong College Student Mathematics Competition 2010)

Analysis and Differential Equations

Please select 5 problems to solve (Please select 5 problems to solve)

After briefly glancing at the title of the test paper, Ning Chen continued to read the questions.

There are six questions in the test paper, and Ning Chen needs to choose five questions to answer.

After roughly reading all six questions, Ning Chen felt that he was capable of completing all the questions within the specified time.

But after all, there will be no extra points for doing one more question, so Ning Chen will still eliminate the more difficult question to give himself a greater chance of getting a high score, or even a full score.

As the bell rang to start the exam, everyone picked up their pens and officially started answering.

Ning Chen didn't hesitate and started working on the first question directly.

Let f : R→ R be any function. Prove that the set of points x in R where f is continuous is a countable intersection of open sets.

When he just browsed the test paper, Ning Chen already had the proof idea for the first question, which allowed Ning Chen to complete the proof process of the first question very smoothly.

Looking at the time, the first question took fifteen minutes, which made Ning Chen feel a little more relaxed.

Ning Chen continued to devote his attention to the next questions. He had to admit that compared to the previous selection test, the difficulty of the main competition questions was indeed much more difficult.

Even the intensive training after the selection competition rarely includes questions of this level of difficulty.

However, Ning Chen was not satisfied with Shengzhou University's internal training. He found many more difficult topics for training. Only then did Ning Chen be able to do it with ease when facing the main competition questions.

An hour later, Ning Chen had almost finished the four questions, while many of the other students in the examination room had finished the second question or had just started to do the third question.

You know, many of the students in the examination room come from the Ice Engineering University known as Little Shuimu.