For the next whole day, the tsundere grandmaster was really washing the toilet alone.

There are eight toilets in the size of the Lotus Temple, and hundreds of monks have stockpiled feces and urine for a long time.

God is pitiful, when has his grand master ever done such a dirty job, but he is willing to lose the bet.

However, when cleaning the latrine, the Grand Master had at least dozens of impulses to run and tear Du Bian, a little broken child, to pieces.

"I am the Great Grandmaster, I am the Great Grandmaster, I am willing to gamble and lose, and I am willing to gamble and lose......"

......

While the Grand Master was cleaning and tidying up the latrine, Du Yan was carefully reading his arithmetic lecture notes.

It is said that it is an arithmetic handout, which is more like the great master's long-term comprehension of arithmetic, as well as the solution of various arithmetic problems.

There were also mathematicians in this world, and arithmetic became a discipline. However, whether it is the Eunuch Academy or the Civil Service Academy, the highest level of arithmetic is primary school graduation.

Arithmetic at the junior high level of the modern earth already belongs to the top mathematical knowledge of the Daning Dynasty, and it is only communicated among a small number of people.

So what about Ning Zongwu's arithmetic attainments?

Some of them have already involved the realm of advanced mathematics in universities, which is more than two eras ahead of this world.

Absolutely, absolutely!

Du Chang is truly breathtaking!

Originally, he felt that his mathematical attainments could despise this era, but when he read the lecture notes of the Great Grandmaster, he was in a cold sweat, and almost every few pages he would be amazed by the Great Grandmaster's brain and impressed by his ideas.

Although he looks very second, Ning Zongwu, who is digging dung outside, is really a generation of grandmasters of the Daning Dynasty, and he is an all-round grandmaster.

Now Du Bian is more and more convinced that the reason why Ning Zongwu will become a great grandmaster must have an extraordinary adventure. There will be a mysterious force or person behind him, most likely not of this world.

Because this great grandmaster's various academic martial arts are really all excellent.

After all, he is from the modern earth of the 21st century, from primary school to master's degree, and has received a professional and systematic mathematics education, although he is far from being a mathematical genius, but he has participated in the National Olympiad in high school, and his mathematics scores in the final exam of the university are all excellent.

So in this world, arithmetic is his best subject, and he hardly needs any study, and he is not afraid of anyone to take the test, including Grand Master Ning Zongwu.

......

It wasn't until late evening that the Grand Master's task of cleaning the latrine was finally completed.

He single-handedly cleaned all the eight toilets in the Lotus Temple, sorted out more than 100 loads of feces and urine, and vomited seven or eight times in the whole process.

He really deserves to be a great master, and he cleans the latrine faster than others.

However, what did he do with the more than 100 loads of things that he cleaned up?

After it was done, the Grand Master took a bath for an hour, really over and over again, over and over again, almost washing off the skin.

But I don't know why, there is still a smell on my body, and it is impossible to wash it off.

However, this was not difficult for the Great Grandmaster, he used his internal strength to force out the stench that had penetrated into his pores. I've always heard that there is luck to force poison, but it's the first time I've seen it smelling of and urine.

In short, when the Great Grandmaster appeared in front of Du Yan again, he had no taste on his body at all, and he regained the appearance of the fairy wind bone.

"Du Bian, what do you think of my math handouts?" Ning Zongwu said lightly.

Du said: "I watched part of it. ”

Ning Zongwu said, "How do you feel?"

Du Bian said: "The great master is really a pedantic celestial, and mathematics is really broad and profound, we must not sit in the well and watch the sky, but must be full of awe and humility." ”

"The child can be taught. The Grand Master said: "Then there is something you don't understand, I can guide you as a teacher." ”

There was a good look of filial piety in front of him, but he was quickly destroyed by Du Bian's words.

Du Bian said: "Teacher, I don't understand anything. ”

As soon as these words came out, Ning Zongwu was furious in his heart.

Du Chang, you are too arrogant, the teacher asks you if there is anything you don't understand, even if you understand, you have to pretend not to understand, and then ask the teacher for advice. You actually said that there is nothing you don't understand, doesn't that make it seem that you are better than the teacher?

However, what Ning Zongwu wants is to be arrogant, and then take the opportunity to teach him to be a man.

"Since you don't have anything you don't understand, I don't have anything to teach. Ning Zongwu said: "Tomorrow, how about we take an arithmetic test?"

Du Bian said directly: "Okay, this will save ten days to study the following lessons." ”

Ning Zongwu said: "You have also seen that today I cleaned the toilet for the teacher and sorted out more than 100 loads of feces and urine, which are the best farm fertilizer, there are 20,000 catties, don't waste it." We still make a bet that tomorrow's arithmetic test, if you exceed 90 points, then it will be considered excessive, and I will jump 20,000 catties of farm manure down the mountain to fertilize the farmland and vegetable fields. ”

"And if you can't score 90 points, then 20,000 catties of feces and urine will belong to you, you don't waste a catty, you have to fertilize all the hundreds of acres of land under the mountain, and you can't let go of every vegetable, how about it?"

It's a tasteful bet, and it's a conspiratorial one.

Obviously, the Great Grandmaster is determined to get revenge for today's revenge.

"Okay, that's a deal. Du Bian said: "Whoever loses will pick up 20,000 catties of feces and urine down the mountain and fertilize the hundreds of acres of fields below." ”

Ning Zongwu said: "Not only that, but you also have to ask me for guilt and say that the disciple is wrong, you should not be so proud, and you should learn to be modest and cautious in the future." ”

"Yes. Du Chang bowed.

Ning Zongwu said: "That's it, I'll go to the question, you prepare, tomorrow's arithmetic exam!"

Then, Ning Zongwu went out, his steps were majestic, high-spirited, full of urgency and excitement, and the confidence that he could win.

Du Bian saw it, this time the Great Grandmaster was completely sure to defeat him Du Bian, otherwise he would not have such a posture.

For a while, he couldn't help but feel a little apprehensive.

If you lose, it's nothing to make amends to the great grandmaster, the key is 20,000 catties of farm fertilizer, which will stink to death and exhaust people.

......

After returning to the study, Grand Master Ning Zongwu couldn't wait to rack his brains to come up with the question.

There are still ten arithmetic problems, almost every one of them exhausts his arithmetic skills, and each of them can make the people of this world cry alive.

It can be said that if you send this arithmetic test paper to Guangxi Eunuch Party College, Lijiang Academy, and Nanhai Dojo, you will be able to score 20 points, and there will be no more than three people in total, and 99 percent of people will score zero in the test.

This difficulty coefficient is simply explosive in this era, breaking through the sky.

But the Great Grandmaster knew that these would not be difficult to change that demon, and he would definitely answer them all correctly.

Knowing oneself and knowing that the other is invincible, the great master can't understand Du Bian's arithmetic skills.

In a word, the talent for arithmetic is described: simply not human.

An eighteen-year-old young man can measure the diameter of the moon in the sky by looking at it, and can also calculate how far the moon is from the ground, and every step is very precise and reasonable, concise and to the point.

Such a mathematical genius, is this still human?

However, even so, the Great Grandmaster was still absolutely sure that he would be able to win Du Chang, and tomorrow he would not be able to score 90 points in the 100% test.

In other words, no one in this world has scored 90 points.

The key lies in the last question, which has a full 20 marks.

However, there is no solution to this problem!

Not only is his great master unsolved, but the whole world is unsolvable, maybe three hundred years later, maybe five hundred years later, someone may be able to solve this world-class problem.

Moreover, the Great Master knew about this problem from a missionary in a Western country. In all the countries of the West, this question has been around for fifty years.

For fifty years, no one in all the countries of the West could understand it!

The title is very simple, just one sentence.

"Any even number greater than two can be written as the sum of two prime numbers, please prove it!"

That's right, this is the fantasy version of the Earth's Goldbach conjecture.

Of course, this world is not called the Goldbach conjecture, but the Mendessoros conjecture.

Because the person who put forward this conjecture was the greatest master of mystic art in the entire Western country for hundreds of years, the master of arithmetic, who almost changed the academic civilization of the entire West.

This conjecture predates the other Earth by nearly 200 years.

Everyone knows that this conjecture is correct, but no one can prove it, and this is a problem that the world cannot solve.

This is the confidence of the great grandmaster to win Du Change, or absolute certainty!

......

After tomorrow's arithmetic exam questions came out, the Grand Master let out a long breath.

Although the exam has not started yet, he has already won.

"Anon, isn't it too much for you to say that I use an unsolvable problem to test Du Chang?" the Grand Master asked, "This should be regarded as cheating, and it is not a martial victory." ”

The old servant said: "Master, every time I see Du Bian, I can't help but have the urge to beat him." So in order to teach him to be a man, any means, any way is just. ”

Ning Zongwu suddenly remembered the hellish experience of cleaning the latrine today, and immediately gritted his teeth and said, "That's right, in order to teach this kid to be a man, any means are correct." ”

The Grand Master sealed the arithmetic exam questions and went back to his room to sleep.

I was a little sleepless and excited, and I couldn't sleep anymore, I couldn't wait for tomorrow to come immediately, and then see Du Bian being defeated.

Stinky boy, just wait to lose, just wait to pick up those 20,000 catties of and pee, hahahaha!

The old servant looked at the great grandmaster and laughed, since he accepted Du Chang as an apprentice, although the two of them had a lot of fighting, the great grandmaster was much more cheerful and happy.

......

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