Yan Xu also lay down in a big groove after seeing this question.

Luck or not!Draw this question out of tens of thousands of comments.

This Nima is a problem that has not been solved in both worlds!

Take the world's three major math problems to make it difficult for a weak woman, and you can really think of it.

How many great mathematicians racked their brains to solve this problem, couldn't sleep all night, tried to prove it in countless ways and couldn't prove it, how could he prove it, and if he did, it wouldn't be a slap in the face of the whole world.

Isn't that embarrassing?

It must have been a mess of the road.

Yan Xu had the urge not to answer this question.

But no, the 13 I installed before must be finished.

Find a way.

Yan Xu's thoughts raced.

At this time, the outside world.

Everyone can see it now, Sister Feng is silent.

She must be stupid now.

Let you load 13, let you load 13!

Load 13 and be struck by lightning.

Don't complain at this time, but when!

They've been holding back for a long time.

Old iron, the barrage is frantically brushing up.

"Okay, answer the question. ”

"That's it, let Lao Tzu wait for so long. ”

"Where did the previous state go. ”

"Is this a moment of Jiang Lang's talent, or is there no brain. ”

"I'm already sure it was before. ”

"No, something went wrong this time. ”

"Yes, I saw that the program team was panicked. ”

"Haha, there was a problem with the system and then there was a problem that shouldn't have been. ”

"This is a typical live broadcast accident. ”

"It is estimated that Sister Feng herself has become a fool 13. ”

"Yes, it's completely different from the rehearsal. ”

......

At this time, Sun Xian, who originally had a particularly ugly face, laughed rarely.

He has been paying attention to this matter, although he has also found many people to block it, and he has also found a master to engage in Yang Zheng's network, but with little success.

What he didn't expect was that Yang Zheng really didn't make some small moves and secretly arranged anything, these were indeed real.

The real one is really good.

But it is also because of the truth, which can make Yang Zheng a fool 13 all of a sudden.

Before, Sun Xian looked at Sister Feng very unpleasantly, but now he feels that Sister Feng is a real ally.

The first two questions were really impressive, but now, wilt!

It makes you arrogant, it makes you arrogant.

It's embarrassing.

And if this continues, the following show will not be able to continue!

This is the super live broadcast accident.

In the future, Yang Zheng will not want to mix in the industry.

There's such a super stain, and what else do you want to do.

And now the sailors he hired are leading the rhythm, and he wants to put some pressure on Yang Zheng.

Sun Xian is very proud now.

He made Yang Zheng desperate before, and then Yang Zheng had hope for a Jedi counterattack, but Yang Zheng had an accident, so he is not to blame, he is now going to make Yang Zheng completely desperate.

This kind of big ups and downs are the most painful.

Crush him spiritually!

Yang Zheng was also a little anxious.

The good situation he had created before now made his mood fall to the bottom because of this momentary silence.

The live broadcast is most afraid of such a situation, such a long silence cannot be edited!

He doesn't want to fall short, he wants to change quickly!

Cut off the signal?

Pretending to be powered off?

It doesn't seem to work!

What to do?

In fact, whether it is the so-called waiting for a long time, or the psychological reaction of Sun Xian and Yang Zheng, it is only a matter of a moment.

They and the commenters didn't know or care about the difficulty of the question.

Sister Feng replied too quickly before!

It's so fast that it feels like it's been so long.

Dong Li waited for a few seconds, and seeing that Sister Feng didn't answer, she was also a little anxious.

She still understands some four-color problems, but she didn't react the moment she saw the question, and it must be too late to say that this question is not suitable at this time.

What should I do?

Directly speaking, Sister Feng wants to accept the challenge of the world's problems?

Then say but the show time does not allow, explain that the four-color problem is a world problem that has not been solved for hundreds of years, and say that this should be a joke made by some netizen?

Okay, let's start with that.

It's just that Dong Li was just about to speak, she saw Sister Feng on the screen smiling, and gave her a reassuring look.

Dong Li didn't expect that Sister Feng's eyes would make her heart beat because of nervousness!

In fact, only ten seconds have passed.

Yan Xu smiled and said, "It seems that everyone really wants to see me make a fool of myself." ”

"However, this time I am afraid that I will disappoint you. ”

"I think many people don't know what the four-color theorem is, so let me explain it first. ”

The four-color theorem has become a four-color problem, and the four-color conjecture is one of the three major mathematical conjectures in the world. What is the four-color problem? The four-color problem is that any map with only four colors can color a country with a common border. ”

"It's amazing, isn't it, you can look at it if you have a map around. ”

"Let's see if you can mark all of them in four colors on a map without causing confusion. ”

"I won't talk about the mathematical nature of the four-color problem. ”

"Now I'm going to elaborate on the history of the four-color problem. ”

In 1852, Francis Guthrie, a graduate of the University of London, proposed that he and his brother prove it, but there was no progress. In the same year, his younger brother consulted his teacher, the famous mathematician de Morgan. However, Morgan did not solve the problem, so he wrote to his friend Hamilton for advice, but it was not resolved until Hamilton's death in 1865. ”

In 1872, Kelly, the most famous mathematician in Britain at that time, formally proposed this problem to the London Mathematical Society, so the four-color conjecture became a concern of the world's mathematical community, and many first-class mathematicians in the world participated in the four-color conjecture conference. ”

"In 1878~1880, the famous lawyer and mathematician Alfred Kempe and Peter Guthrie Tait respectively submitted papers to prove the four-color conjecture and announced the proof of the four-color theorem. ”

"You think that's the end of it? No. ”

In 1890, Herwood, who was a student at Oxford, pointed out Kemp's loophole in the proof with his own precise calculations. ”

So it wasn't completely proven, but Herwood proved the five-color theorem, which means that five colors are enough to color the map. ”

In 1939, Franklin proved that maps of less than 22 countries could be colored in four colors. In 1950, Wynn advanced from 22 to 35. In 1960, it was demonstrated that maps with less than 39 countries could be colored in only four colors, and then advanced to 50 countries, but progress was still very slow. ”

"In 1976, on two different computers at the University of Illinois, it took 1,200 hours and 10 billion judgments that no map needed five colors, and finally proved the four-color theorem, which caused a sensation in the world. ”

But the industry doesn't admit that it's just 10 billion judgments from a computer, and it doesn't give a convincing thought process. ”

Yan Xu had no one to interrupt while he was speaking, so he talked eloquently until he finished this part.

During this period, everyone is still swiping the screen, because they have checked it themselves and know that no one has proved it so far!

There is no solution to this problem.

However, since there is no solution, Sister Feng is still talking nonsense here, and if she doesn't say the right thing, she won't spray her!

Let you explain, explanation is a cover-up! Although what you said is very slippery, although we haven't finished reading it, it doesn't prevent us from knowing that you definitely can't answer.

If you can't answer, you'll slap yourself in the face!

Not only the water army, but everyone has joined the army of Sister Spray Wind.

However, the last sentence that Sister Feng said made everyone's comments come to an abrupt end.

Yan Xu: "Maybe everyone thinks I'm talking about irrelevant content, but on the contrary, everything I say is relevant. ”

"The four-color conjecture is a mathematical problem, I studied Chinese language and literature, and if I were to prove this mathematical problem, it would be difficult for a strong man. ”

"But why did I answer anyway?"

"Because, I am very interested in history!"