Shen Qi wrote a differential equation, and there are many different ways to solve this equation.

After thinking for a while, the girl solved the equation with infinite series, wrote a few words in the notebook, "Please ask Teacher Shen to review", and then handed the notebook to Shen Qi.

Shen Qi glanced at the notebook, reviewed the word "√", and left.

If Shen Qi is asked to come out of the final exam paper of the freshman high school of mathematics, this question just now will definitely be selected.

The girl can give the correct answer in a short time, and Shen Qi can't say anything, what does she like.

Students who love to sleep in class are either scumbags with broken jars or talented scholars.

Shen Qi finished the day's work, changed into sportswear, and went to run in the May Fourth Stadium.

There is a running friend, who is an associate professor of Xu Zhou of the Institute of Physics.

Xu Zhou and Shen Qi ran and exercised together to reserve physical energy.

After running 5,000 meters, Xu Zhou could keep up with Shen Qi's rhythm.

Running to 10,000 meters, Lao Xu couldn't run, and Shen Qi was still running.

Shen Qi ran 12,000 kilometers and sat down beside Xu Zhou.

Xu Zhou unscrewed the cap of the mineral water bottle and handed it to Shen Qi: "Professor Shen, you are too good at running, you can understand." ”

"Lao Xu, when are you leaving?" asked Shen Qi after taking the mineral water.

"Next month. "The scientific research project applied by Xu Zhou has passed the internal review of Yan University, and it should only be a matter of time before it is approved by the ministry.

"The first stop?" Shen Qi was very interested in Lao Xu's scientific research project.

"Sanjiangyuan. Xu Zhou, an expert in atmospheric physics, is grateful to Shen Qi for his remarks that helped his project pass the internal review and make the expedition go ahead of schedule.

"Sanjiangyuan is a good place, there are many famous snow-capped mountains, do you have a mountaineering plan for this scientific expedition?" Shen Qi asked again.

Xu Zhou replied: "No, we are not professional enough in mountaineering, we will collect data at the foot of the mountain this time, such as atmospheric, hydrological, geological and other data." Actually, my team is like a navy, and we are better at working in the ocean. ”

Xu Zhou's scientific expedition project this time is to study the problem of global warming in depth.

Their expedition route started from the Sanjiangyuan Plateau and headed eastward into the Arctic Circle.

The Tibetan Plateau is considered a source of heat in the northern hemisphere in summer and a source of cold in winter.

How to improve a series of anomalies such as global warming, the large-scale melting of Arctic glaciers, and the abnormally high summer temperatures in countries in the northern hemisphere are the topics of Xu Zhou's research.

"The Tibetan Plateau is the air conditioner in the northern hemisphere, but now, the air conditioning is in trouble. This scientific expedition is quite meaningful, and I look forward to your significant research progress. Shen Qi is very supportive of Xu Zhou's scientific research project.

"Satellite inversion combined with numerical model analysis has its advancement, but there are still some errors in satellite data and computer numerical models, especially the ability to describe the complex underlying surface of the plateau is obviously insufficient, so field research still has irreplaceable scientific value. On the issue of global warming, the specific physical processes and dynamics of global warming, I would like to ask Professor Shen for advice. ”

Xu Zhou took a sip of mineral water and said: "Professor Shen, I have read all the papers and monographs you wrote, and there are two articles that I have repeatedly studied, one is "On Complexity" written by you when you were working at Princeton, this article has a particularly in-depth analysis and prediction of turbulence and chaos theory, which fascinates me. The second is the analysis of the N-S equation that you published last year, in which you gave the understanding method and general solution, and I am more concerned about the specific application research of the N-S equation. ”

Shen Qi smiled: "Then we'll see you at Sanjiangyuan." ”

Xu Zhou asked, "Are you going to set off with our expedition team, or do you have other plans?"

"Your scientific expedition team will follow the established plan, don't worry about me, when the conditions allow, I will go to you. Come on, Lao Xu, run another 5 kilometers. Shen Qi pulled Xu Zhou to continue running, scientific research is a physical and intellectual work, without a strong physique, not only can not complete the scientific research task, but also may have something happen in the process of scientific research.

Lao Xu gritted his teeth and ran another 5 kilometers, he was so tired that he cramped, he couldn't run anymore, so he lay on the lawn to rest.

Shen Qi ran for half a marathon in one go, and there was still enough courage to give.

As the sun sets, the students get out of class, and the number of college students who come to exercise in the stadium gradually increases.

There is a running team that is more distinctive, more than a dozen of them wear uniform white T-shirts, and the logo is Yandashan Eagle Club.

The members of the Mountain Eagle Club each carried a bag with 15 pounds of water in it, and they ran in circles with weights.

There are two most famous clubs in Quanyan University, one is the League School, and the other is the Mountain Eagle Club.

The core activity of the Mountain Eagle Society is summer mountaineering, and the mountain peaks above 6,000 meters in China have basically been conquered by the Mountain Eagle Society.

In the summer vacation of July and August this year, the Mountain Eagle Club will continue to carry out summer mountaineering activities.

May and June are very important stages of mountaineering preparation, and the Mountain Eagle Club adopts the old and new ways to run in Yanda, or run from Yanda to Xiangshan, and climb all the way to Xianglu Peak.

More professional training is carried out at the Huairou Rock Climbing Base, and the testing ground for newcomers is the 3,000-meter-high North Terrace of Wutai Mountain.

It is not difficult for Yan University students to enter the Mountain Eagle Club, but the difficult thing is to enter the Mountain Eagle Club mountaineering team.

The designated location for the winter training of the Mountain Eagle Club is the North Terrace of Wutai Mountain, and out of this newcomer village, the newcomers are eligible to join the Mountain Eagle Club mountaineering team and challenge the more difficult and high snow mountains.

Shen Qi ran and ran, and then ran into the team of the Mountain Eagle Society.

"Yo, Professor Shen!" the members of the Mountain Eagle Society spotted Shen Qi who had blended into the team.

"Friendly forces, friendly forces. Shen Qi adjusted the rhythm of his breathing and motioned to the training team of the Mountain Eagle Club to treat him as air, leave him alone, and let him go.

It is not easy to run with 15 catties of water, but none of the members of the Mountain Eagle Club complain that they are tired, because they know that it is the norm to march up the mountain with dozens of catties of tents and equipment on their backs.

The members of the Mountain Eagle Club came from various faculties and departments of Yan University, mainly undergraduates, and after a wave of weight-bearing runs, they stopped to rest.

Most of the 12 members are boys, but there are also three girls.

Shen Qi sat down next to a girl and said to the girl, "Classmate, I can see you anywhere, are you a member of the Mountain Eagle Society?"

This girl was the one who dozed off in class in the morning, she nodded and said, "Yes, my name is Zeng Linna, a first-year student majoring in financial mathematics in the School of Mathematics, please ask Professor Shen for advice." ”

"Linna-san, since you are from the Mountain Eagle Society, then I am relieved. "Shen Qi knows the recruitment standards of the Mountain Eagle Club, they don't recruit students who fail the course, don't recruit those who don't pass the ideological and moral standards, and don't recruit those who are pampered.

Zeng Linna's ability to join the Mountain Eagle Club and enter the June training team shows that she is excellent in her studies and has not failed a course in the first semester of her freshman year. She should have passed the Wutai Mountain winter training test, otherwise she would not have been able to enter the June training team, which shows that she has strong perseverance and high double resistance.

There are a lot of top students in Yan University, and the reasons for them to join the Mountain Eagle Club are strange, the current president is from the Institute of Chemistry, his grades are so good that several courses are exempted, he is really bored, so he joined the Mountain Eagle Club to kill time.

Mountaineering is dangerous, and few students join the Mountain Eagle Club for exercise, and the regular sports clubs such as the Running Association, the Table Tennis Association, and the Swimming Association are more suitable for exercise.

"Why did you join the Mountain Eagle Society?" asked Zeng Linna.

Zeng Linna: "The president said that the mountaineering team of the Mountain Eagle Club must have female members, preferably the kind of good-looking and ingenious young lady, so I joined." ”

"This is particularly well-founded. Shen Qi smiled and asked, "This summer, what are your challenge goals?"

Zeng Linna looked into the distance and said yearningly: "Ma Qinggang Day." ”

"Maqinggang Day, Shenshan, I also want to go. Shen Qi looked into the distance, where there were poems and fields, as well as snow-capped mountains and his conjectures.