"There was a lecture on November 3rd, and the speaker was Lux, a honorary doctor of the School of Mathematics. Those who are interested will listen." Shen Qi sent a message in the WeChat group of the Department of Mathematics, and then continued to swear to foreigners.

"Miss Helen, why do you Americans always love to provoke wars?" Shen Qi spoke English, and the chat partner was his college English teacher.

Helen Margaret Lawrence is from the United States and is an English foreign teacher at Yan University. She gave herself a Chinese name called "Mulan".

"This is a conspiracy of bankers, a trick for politicians to divert domestic conflicts. Most Americans oppose war, and our whole family is anti-war people." Helen said.

"I feel like America is very chaotic?" Shen Qi asked.

"So I'm in China." Helen was not angry, but laughed: "My current boyfriend is Chinese. He is very handsome and charming, and more importantly, he is knowledgeable and talented."

"Is that so? He is also a teacher?" Shen Qi asked.

"No, he is still studying, studying for a PhD at Mizuki University." Helen's smile was filled with happiness. She raised her palm and wore a diamond ring on her left middle finger: "In fact, he has proposed to me."

"Congratulations!" Shen Qi congratulated him.

The man from Yan University’s girl Shuimu, sure enough, the men from Shuimu University have tricks, and even the foreign female teacher from Yan University was abducted by Shuimu.

"We will hold a Chinese wedding in his hometown, after he graduated from his Ph.D. Wow, his hometown is very beautiful. I have been there a few times. The stinky tofu is very delicious. I think I can't live without stinky tofu and China." Helen looked excited, "Yes, I love China, and China's Ph.D."

"Miss Helen, your taste is really special. Maybe in the near future, should I call you Mrs. Helen Wang or Mrs. Helen Zhang?"

"After entering the countryside, I don't have to change my surname after marrying a Chinese man."

Shen Qi and Helen chatted for the whole afternoon.

English +1

In the following days, Shen Qi and his college English teacher continued to communicate. On the one hand, they found the feeling of English listening and speaking. Shen Qi also learned a lot of American social characteristics and customs from Helen.

"So you are determined to go to Princeton?" Zhou Yuan asked Shen Qi.

Today is November 3rd, a large classroom in the Science Building, and the math lecture of Mr. Lux is about to begin.

"If it weren't for mathematics, I really didn't want to go to the United States. America was too chaotic." Shen Qi said, looking around, why didn't Ou Ye come yet?

"For math, you are willing to step into danger. For the sake of your girl, you are indifferent." Zhou Yuan sighed, "You cannot have both beauty in the country and the country. Since ancient times, the beauty has been so poor."

"Where are the beauty? Are you?" Shen Qi asked back.

"Don't pretend to be confused when you understand!" Zhou Yuan felt distressed for the girls, "I have seen through Shen Qi. There is only one woman you love, and her name is Mathematics."

At this time, a young man pushed his wheelchair into the classroom, and the audience was silent spontaneously.

In a wheelchair is a white old man, Peter Lux, a master in the field of contemporary applied mathematics.

Lux has taught at New York University, a holy land of applied mathematics for a long time. He is very friendly to the Chinese mathematics community and was awarded the honorary doctoral title by Yan University Mathematics Academy.

There are many formulas, theorems, theorems and theorems named after Lax, such as the application of Lax shock conditions and entropy in shock theory, Lax Windrov format, Lax Milgram theorem, etc.

Lax, who is 90 years old, is a Wolf Prize winner. The octogenarian has lost his ability to move and can only speak in a wheelchair.

Nian Ruiming was right. Mr. Lax had a very strong English accent and had obvious Eastern European pronunciations. Lax was born in Budapest, Hungary and later immigrated to the United States.

Lax's lecture was intermittent, and he had to pause for a while when he spoke three sentences, and then continued to speak.

But the students listened with relish, including Shen Qi.

"Nonlinear equations are always annoying...but in kdv equations, it is these nonlinear effects that make us..."

"No other field relies on calculations like chaos... With calculations, we can explore the mystery of chaos. This branch of mathematics is enough to change the world..."

"Children, you must have heard of the butterfly effect... The butterfly effect is a theory of chaos theory..."

"Butterflies dance their wings and cause an amazing typhoon on the other side of the earth..."

"The question is, in the vast Amazon rainforest, there are trillions of butterflies flying in the order of magnitude, which butterfly is the source of the typhoon..."

"Through mathematics and calculations, we can accurately find this butterfly..."

"And let this butterfly dance its wings at a certain frequency within a specified time..."

"Computing is an astronomical number, and humans cannot complete this work... Fortunately, we invented the computer..."

"We must never turn mathematics into a weapon of war... but through mathematical calculations beyond imagination, we can solve the problem of the Sahara drought or the flood disaster in the Amazon at extremely low costs..."

...

The Temple of Basic Mathematics is in Princeton, where scholars are responsible for theoretical research.

The arsenal of applied mathematics is at New York University, where engineers are responsible for practical applications.

Shen Qi was even more interested in basic mathematics. He believed that theory determines the application level, so his goal was Princeton.

"Come to the Science Building!" Shen Qi sent Ou Ye WeChat. He felt that Ou Ye was very necessary to listen to Lax's lecture. Ou Ye is the calculation girl and Lax is the calculation emperor. If Ou Ye can learn the essence of calculation from Lax, one day she has the hope of becoming the new generation of emperor in the computing world, the calculation empress.

In fact, Shen Qi had already informed Ou Ye that there would be a math lecture today, but until Lux finished his speech, Ou Ye did not appear in the classroom of the science building.

"What are you doing at Ou Ye?" Shen Qi was so angry that Lax was ninety years old. He gave a lecture at Yan University once a year and listened less once a day.

After listening to Lux's lecture, Shen Qi ran towards the Matrix Building. Ou Ye, you have become a popular stock. The professors of the Matrix School are rushing to ask for you. Are you floating? Are you expanding?

Shen Qi came to the Mathematics Institute and opened the door of the SoS Project Office. He was about to get angry, but he found that Ou Ye was asleep on the computer desk, with a small bottle of medicine next to the computer display screen.

There is a latex document on Ou Ye’s computer screen, and she is writing a summary section for the SoS topic paper.

"Oh..." Shen Qi sighed, feeling distressed, his previous complaints had long disappeared.

Taking off her coat and gently putting it on Ou Ye's slender shoulders, Shen Qi sat beside Ou Ye and looked at her quietly.
Chapter completed!