After breakfast, Lu Qiujian put away the tent and stuffed it into his bag, cleaned the garbage left behind, checked and found nothing missing, and then embarked on the journey with Natalie again.

Natalie followed him in a jacket and walking poles, and walked the mountain trails right next to the White River to enjoy the unique wilderness scenery, and occasionally saw the same backpackers swimming in the river as if no one was around.

The beautiful scenery, the fresh air, and the majestic wind blowing from the mountains, everything is so beautiful that it makes people feel refreshed, "Do mathematicians also like to travel?", looking at Lu Qiujian's excited appearance, Natalie couldn't help but ask.

"There's nothing more relaxing than nature! Mathematicians aren't all people who like to spend their heads in their rooms. Lu Qiujian heard Natalie's breathing thicken a little, so he found a clean place to sit down and began to tell her the story of the mathematician and travel.

"In the summer of 1929, Kolmogorov and Aleksandrov set out by boat from Yaroslavl, along the Volga River through the Caucasus Mountains, and finally arrived at Lake Sevan in Armenia, where they settled on a small peninsula. There, while enjoying swimming and sunbathing, Alexandrov wore sunglasses and a Panama hat and wrote a work on topology in the sun, which became a classic as soon as it came out. ”

"Many of Kolmogorov's fantastic and crucial ideas are often born during a walk in the woods, a dip in the lake, and skiing on the slopes. During his visit to India in 1962, he even suggested that all of India's universities and institutes should be built along the coastline so that teachers and students could swim before serious discussions began. ”

"Haha, then these school holidays must be arranged according to the arrival time of the typhoon!", Natalie couldn't help but laugh, "but that sounds like a good idea!"

"In my country, there is a professor from Jiangnan who also likes to travel, he has traveled to more than 60 countries and wrote 250 exotic poems. Lu Qiujian stroked Natalie's hair and told the story of Professor Cai in a warm voice, "He filmed subway stations in Paris, danced with girls he didn't know in a bar in Budapest, and his poems remained on postcards in Israel: We live in this world, like a beam of bullets, through the wall of the dark night." ”

"Mathematicians are romantic, more charming than those artists!", Natalie looked at Lu Qiujian's face in a daze, dyeing his face golden through the sunlight between the leaves.

After resting for a while, drinking some water, the two of them continued to walk, crossing the long and winding mountain road, listening to Lu Qiujian's endless stories, while enjoying the beautiful scenery of the mountains, the two of them walked much brisker.

A fork in the path begins, and along the fork in the road, a magical modern church appears in the middle of a forest of tall deciduous trees.

On top of the massive rock and coloured stone slabs, four rows of thick square steel columns support the high roof, and some slightly thinner steel columns cross above the supporting columns to form a beautiful diamond-shaped pattern, all of which are made up of glass curtain walls, which are like a fairyland in the light.

"Wow, that's beautiful!", Natalie couldn't help but quicken her pace, and when she reached the church, two white men were using tools to tighten the screws on the steel pillars, and another elderly man dressed as a backpacker was watching them work.

"Welcome to the Crown of Thorns Church!", the two workers greeted with a smile and went on their own business, looking like the two of them had completed this beautiful building on their own.

Natalie walked into the church to visit, while Lu Qiujian stayed outside to look at the lines of the building, with a look of appreciation in his eyes, and the old man on the side couldn't help but ask curiously, "What did you find?"

"I see the beauty of mathematics!", Lu Qiujian pointed to those beautiful diamond-shaped structures, "It is both concise and changing, full of classics of geometric simplicity and beauty!"

"The basic element is the simplest rhomboid, which changes only in quantity, and therefore, reflects the aesthetic value of quantity. The elderly man couldn't help but echo him.

"Do you also study mathematics?", Lu Qiujian couldn't help but be curious.

"Well, I studied mathematics for a while in the early years, and then I realized that I wasn't that material and changed my career!", the old man's face showed a look of reminiscence, "I'm going to ask my teacher, should I go into politics or business? The teacher said that those guys in politics are smart people, and you are not smart enough, so go into business!" So I became a businessman!"

This story seems to have been heard somewhere, Lu Qiujian recalled it and asked tentatively, "Your teacher is Mr. Chern, right?"

"Yes, how do you know?", the old man looked a little surprised.

"Then it seems that you are Mr. Simmons!", Lu Qiujian stretched out his right hand, "You are too modest to say that you are not a student of mathematics! The Chen-Simmons law of geometry is simply fascinating!"

"Aha, do you know me? Most people only regard me as a fairly successful businessman!I didn't expect that there is a law of remembering me!", the old man happily shook Lu Qiujian's hand.

"I studied with Professor Thurston for a while, and he won the Wiblen Prize with you back then!", Lu Qiujian suddenly felt that this circle was so small, "If the average annual net return of 35.6% is just a success, then Buffett and Soros will probably be ashamed of themselves!"

Simmons controls the world's eccentric investment firms, and the medallion fund under his management has an average annual net return of 35.6%, which is 18% higher than Warren Buffett and 10% higher than Soros.

Together with the Princeton mathematician Lefehr, he redeveloped his trading strategy, shifting from fundamental analysis to quantitative analysis, and making data models to predict changes in the currency market. This mathematical tool has allowed him to avoid financial crises one after another and make countless profits.

Since it was speculation, Simmons followed Lu Qiujian and Natalie to start the journey again, of course, when camping at night, he would carry the tent alone and hide far away, the old man was also young, so he naturally knew how to provide convenience for the young man!