Watson had been watching from the sidelines, and when he first saw the formula written by Niu Xiaoqiang, he seemed a little puzzled, when Niu Xiaoqiang wrote half of the formula, his expression looked a little surprised, and when Niu Xiaoqiang wrote two-thirds of the formula, his disbelief turned into shock.

The look of shock remained unchanged until Niu Xiaoqiang wrote the last annotation, and nothing changed. When Niu Xiaoqiang handed over the notebook, Watson was still stunned on the spot, and the expression on his face was still the same.

Niu Xiaoqiang saw that Watson was stunned by his performance, and he was a little proud in his heart, and at the same time a little lucky: Fortunately, some time ago, the master forced me to learn the ability of mechanical drawing, so that I had to put down algebra and learn geometry instead。

Niu Xiaoqiang thought of this and spoke again: "Mr. Watson, please check the answer, if there is no problem, please hand over the bonus to me according to the previous agreement." ”

"Ahh

Watson's brain was a little messy, and even the words he spoke were incoherent.

After reorganizing the language, Watson spoke, "You...... Have you ever seen a similar question to this one before?"

Niu Xiaoqiang thought that Watson was making excuses, so he immediately said with a straight face: "I can tell you very seriously, I have never seen this question before, and I have never seen a similar question to this question, Mr. Watson, please don't miss the appointment." ”

More than 100 yuan was naturally not taken into Watson's eyes, he handed the money to Niu Xiaoqiang casually, and then asked, "Do you want to make more money?"

Niu Xiaoqiang was so happy, he nodded while counting the money: "Of course I want to, what, do you still want to come up with a difficult problem to test me, and watch me make a fool of yourself?"

Watson suppressed his excitement and hurriedly wrote a math problem in his notebook that he had seen.

After writing, he handed the notebook and pen to Niu Xiaoqiang, and took out a stack of big unity from his pocket: "See if you have any money, as long as you can answer the question I just asked, the money will be yours." ”

Niu Xiaoqiang just said it casually, it was a joke, but he didn't expect Watson to really do it. He stared at the bill in Watson's hand, and quickly estimated how much money it was.

In this era, the largest banknote in China was the 10 yuan paper yuan, which is commonly known as the great unity. As for the hundred-dollar bill, it has not yet been issued.

According to Niu Xiaoqiang's estimates, Watson held at least twenty banknotes in his hand, that is, no less than two hundred, which was dozens more than the chips he took out for the first time.

Niu Xiaoqiang just counted the bonuses he got, a total of 140 yuan, if he can earn more than 200 yuan...... Tut-tut, it's wonderful to think about!

"Okay!

Without much thought, Niu Xiaoqiang accepted the challenge again. He put the prize money he had just won into his pocket, then grabbed his notebook and pen and thought about it seriously.

Compared with "The Seven Bridges Problem of Königsberg", the topic of the Olympiad is naturally simpler, and this time Niu Xiaoqiang only thought about it for a few minutes before starting to write.

Soon, he wrote out the answer, then handed the notebook to Watson, stared at the banknote in Watson's hand and said, "I have written out the answer, please check it, if there is no problem, give me the bonus." ”

Watson took the notebook and looked at it a few times, then handed the banknote to Niu Xiaoqiang without hesitation, and at the same time he was more sure of the conjecture in his heart.

When the first answer was written, Watson was completely stunned by Niu Xiaoqiang. He didn't expect Niu Xiaoqiang to be so powerful, and he solved the improved version of "The Königsberg Seven Bridges Problem" in less than half an hour, what a terrifying IQ it would take!

Later, he realized that many of the answers written by Niu Xiaoqiang belonged to the category of basic geometry, and not too many belonged to the category of advanced geometry. If you use advanced geometry, the answer will be simplified a lot. From here, it is not difficult to see that Niu Xiaoqiang's exposure to knowledge is still limited, and it is not so broad. This shocked Watson even more.

Imagine that a person who has not received a complete higher education in mathematics can solve the "Königsberg Seven Bridges Problem", and if he has received a complete education in advanced mathematics, will he not be able to solve those world-class mathematical problems?

Watson just had such an idea, and he was not very sure, and in order to test his conjecture, he paid for the actual investigation again. The result was completely consistent with his conjecture, Niu Xiaoqiang still used part of the knowledge of basic mathematics when solving Olympiad problems, which shows that his knowledge of mathematics is indeed not comprehensive enough.

A person who has the ability to teach calculus on his own, and also relies on his own strength to solve an improved version of the "Königsberg Seven Bridges Problem", and the title of the Olympiad is not under his words, this is definitely the best student that all teachers desire. Watson didn't want to miss Niu Xiaoqiang, which in his opinion was simply a crime.

Watson has accumulated a wealth of experience in how to impress Niu Xiaoqiang. He put his hand in his pocket, originally wanting to take out all the remaining RMB as a bargaining chip to lure Niu Xiaoqiang. But when he put his hand in his pocket, he realized that he had used up all the renminbi he had exchanged.

Watson had to take out a bundle of dollar bills from his pocket, he flicked the dollar with his fingers, the green dollar made a pleasant sound, Niu Xiaoqiang turned his head to look at the sound when he heard the sound.

Watson showed a smile that the big bad wolf deceived Little Red Riding Hood: "This is 10,000 dollars, according to the current exchange rate, one dollar is equivalent to two yuan, of course, this is only the official exchange rate, I heard a Chinese friend of mine say before I came to China, one dollar can be exchanged for ten yuan on the black market, that is to say, the money in my hand is equivalent to 100,000 yuan, child, do you want it?"

Watson originally thought that Niu Xiaoqiang would cry and shout to go to MIT after hearing his words, this kid is so excited about more than 300 yuan, if he can get 100,000 yuan, he will not be happy to die?

What Watson didn't expect was that Niu Xiaoqiang did not show a happy look, but took two steps back, staring at himself with a very vigilant gaze, and there was even a trace of hostility in his eyes.