After the "History of Number Theory" went on sale in the United States, the sales data for the first month came out.

Hailed by the American Mathematical Society as an epic mathematical work, it sold 5,000 copies in its first month.

"Professor Shen, you can open champagne, "The History of Number Theory" is really a big hit. Wiese of Springer Publishing Group called to congratulate him.

"Thank you, Mr. Wiese, for your very professional business operations. Shen Qi let out a long breath, fortunately he didn't hit the street, the results in the first month on the shelves were good, and the sales of 5,000 copies were completely acceptable.

An academic work is not YY, and an academic monograph is considered a bestseller from the day it is published until the author's death, and the cumulative sales of more than one million copies are considered bestsellers.

There are only a handful of such best-selling academic works, such as On the Relation of the Physical Sciences (published in 1834), The Mysterious Universe (1930), The Way of Physics (1975), The First Three Minutes of the Universe (1977), The Universe (1980), and A Brief History of Time (1988).

With the exception of "On the Relevance of the Physical Sciences", the author of which is a mathematician (the British mathematician Someville), the authors of several other best-selling popular science books are physicists.

A Brief History of Time is a phenomenal work, with more than 10 million copies sold worldwide.

Even best-selling popular science works such as "A Brief History of Time" have only sold more than 10 million copies in a few decades.

The market is like this, and the readership determines how much the work sells.

For the readership of "The History of Number Theory", Springer counted the preliminary consumer characteristics, and the typical consumer portraits are: highly educated, middle class, aged 35-45 years old, engaged in or engaged in scientific research-related work.

The core consumer group of "History of Number Theory" is highly educated scientific researchers in the United States, and this group belongs to the minority elite in any country.

In Springer's "History of Number Theory" big data preliminary statistics, there are very few readers who "buy and don't read" and "buy back and collect", and the price of $85 is not cheap, and the same price can buy seven to eight books of the same thickness.

Big data shows that American consumers tend to be rational in their spending behavior, which is closely related to the depth of the pockets of the general public in the United States, and it can also be seen that the economic recovery in the United States is not as high-flying as their president has claimed.

In any case, Shen Qi was pleased with the sales of 5,000 copies in the first month, and this is only the sales statistics of the United States, there are still many English-speaking countries, and the English version of "The History of Number Theory" will be released on the shelves of the world in the near future.

As well as French, Spanish, German, Arabic and other languages will be released one after another, of course, the Chinese version is indispensable.

Shen Qi pinched his fingers and calculated, he was expected to witness the cumulative sales of "The History of Number Theory" exceed 1 million copies in his lifetime, so he had no regrets, just lie down and collect the money.

The sale of 5,000 copies of "The History of Number Theory" brought Shen Qi $65,000, and the book "The Mathematical Experience of Shen Qi, the Olympiad Champion", which he published after the college entrance examination, is still on sale, and with the salary of a Princeton professor, Shen Qi's annual income is expected to exceed one million dollars. This is a regular income that does not include prize money.

The prize money is actually not much, the scientific breakthrough prize is $1 million, and the prize money to prove the Riemann conjecture is also $1 million. These two bonuses are Shen Qi's main bonus income.

Fields' prize money was only a measly $15,000, or $11,364.

The Stihl Prize, which has just been won, is a little more than $25,000.

Shen Qi found that his bank card balance was more than two million US dollars, Mercedes-Benz also bought it, and his daily expenses didn't cost much, his parents were richer than him, and he didn't need to support him for the time being.

Girlfriend and their family are richer, Shen Qi doesn't know where to spend money, the world setting is not a rebirth setting, who dares to guarantee a steady profit by speculating in stocks and houses or other types of investment?

Hardcore tech stream forced investment?

Theoretically, a Fields Medal winner has this ability.

But this requires a huge amount of energy to devote to worldly affairs, and Shen Qi does not have this energy.

"What's the use of money?" Shen Qi asked Ou Ye.

"If only it was enough. Ou Ye replied.

Shen Qi drove Ou Ye's Bentley and accompanied Ou Ye to a hospital in New York for a physical examination.

Last weekend, Shen Qi came to New York to see Ou Ye and found that Ou Ye's mental state and physical condition were not good, so he made an appointment for today's hospital examination.

This weekend, Shen Qi came to New York again and took Ou Ye to the hospital as planned.

After Ou Ye bought this Bentley, Shen Qi drove more time than her: "Xiao Yezi, you bought this Bentley for 300,000 US dollars, and the cumulative mileage you have run is less than 1,000 miles, and I have already run 5,000 miles for you." ”

"If only you liked to drive this car. Ou Ye reluctantly squeezed out a smile, her recent state is really not good, and increasing the dosage can only barely maintain normal behavior.

Looking at Ou Ye distressedly, Shen Qi had a reason to save money, and his girlfriend had to spend money to treat her illness and take medicine.

Ou Ye has been suffering from this disease for more than ten years, it is a chronic disease, and it needs to spend money for a long time, and it has cost a lot of money, but fortunately, her family is not short of money.

Parents will eventually grow old, and one day Shen Qi will need to take on the task of taking care of his wife and children, as well as his old father and mother. Although I don't have a wife and children yet, there will always be one in the future.

In the United States, better private hospitals require an appointment in advance, sometimes for weeks or even months.

Some patients have recovered spontaneously the day they see the doctor.

Ouye does not belong to the situation of self-healing, and she is more emaciated today than she was a week ago.

Ouye's doctor has a diploma from Harvard Medical School, and the American female doctor has been practicing for many years, with rich experience, excellent medical skills, and a good reputation.

All kinds of medical instruments and medical methods are applied to Ou Ye in turn, blood drawing, urine extraction, X-ray, MRI are all routine examinations, there is a kind of high-end instrument Shen Qi has never seen, Ou Ye first drank a glass of blue liquid, and then lay on the examination table, connected to dozens of tubes all over his body, like a vegetative person.

After the full set of examinations, Ouye was exhausted and speechless, and she lay on the table and fell asleep.

Shen Qi looked sad, and he asked the doctor: "May I ask my girlfriend about this disease, can you cure it?"

American female doctor: "Mr. Shen, you can make an appointment for me next Saturday, the test report will take a few days to complete the data analysis and comprehensive evaluation." ”

American doctors believe in data, and without data they can't do their job of curing diseases and saving lives.

In the era of science, most doctors around the world followed this principle, and Shen Qi's mother was a doctor, and he respected the way doctors worked.

Leaving the hospital and returning to Ou Ye's dormitory at Columbia University, Shen Qi asked, "Xiao Yezi, at the end of this semester, can you get a master's degree in mathematics from Columbia University?"

Ou Ye nodded: "Hmm." ”

Ouye participated in the project of RT Third Expression and made a certain contribution to this topic. She has almost earned the required credits for graduate school, and the academic results of RT Third Expression can bring her extra points, which meets the graduation requirements of Columbia University's master's degree in mathematics.

Shen Qi: "When doctoral students come to Princeton to study, that's it. ”