The Tibetan envoy stood up and asked loudly: "King Shu, you are known as the first genius of the Tang Dynasty, and you have left many popular poems. It has created countless miracles, and I have a problem I want to ask the King of Shu, I wonder if the King of Shu can solve my doubts? ”

Li Su smiled slightly: "What problems do you have, just say it!" ”

The Tibetan envoy couldn't help but say: "Dare to ask the King of Shu, how far away is the moon from us, and how far is it?" ”

Hearing this question, Li Su was slightly surprised, and couldn't help but look at the Tibetan envoy.

This question really surprised Li Su's expectations.

In Li Su's imagination, the envoys of these countries were able to come up with the so-called problems.

It's nothing more than a few ancient mathematical problems, and then there are couplets, riddles, poems, songs, and so on.

And this Tibetan envoy actually asked such a technical question, which made Li Su look at him with admiration.

Li Su couldn't help but smile slightly, and then asked, "Then do you know the answer?" ”

The Tibetan envoy exaggeratedly said: "King Shu, this is our question for you, if we can, do we still need to ask you?" Could it be that the King of Shu can't answer this question at all? ”

The question raised by Tubo was quickly passed on to the people who were watching the excitement around them.

After hearing this question, the people of Yizhou all sweated for the King of Shu.

I have to say, this Tibetan envoy is really bad!

I'm afraid that even he doesn't know the answer to this question, right?

What's wrong with this?

This question asks how far away is the moon from us, and how far is it?

The next question is how far away is the sun, and how far is it?

The next one asks the Cowherd and Vega, isn't this a scoundrel!

At this time, I heard the king of Shu answer with a smile: "The question is, if you don't know the answer, then the king of Ben will just say a number, won't it be difficult for you to distinguish the truth from the false?" ”

The king of Shu's answer immediately made a cheer around him.

Yes, since you have such a scoundrel question, this kind of question that there is no answer at all.

Of course, we can also play scoundrels!

At this time, the crowd of onlookers around couldn't help but praise Li Su's wit!

And after hearing Li Su's words, the envoy of Tubo laughed and said: "How can the King of Shu, who is famous all over the world, be a wasted person?" What's more, although I don't know how to ask for this distance, but coincidentally, someone really asked for it, and I have the answer here! If the king of Shu talks nonsense, I'm afraid he won't be able to do it! ”

What the?

This Tibetan envoy actually knows the answer?

How could he be so bad?

At this time, the surrounding people began to be anxious for the king of Shu.

In fact, there are many tourists who come to Yizhou now.

Among these audiences, there are many wise men, but even they can't figure out the slightest clue about this topic.

How far are we from the moon?

I don't have a clue about this, so how can I calculate it?

In the crowd, a girl covered with a light veil looked at the King of Shu with interest.

This girl is naturally Cui Shi Niang.

And this question is actually from her.

Cui Shi Niang is very interested in astronomy.

In her free time, Cui Shi Niang once personally calculated the astronomical calendar.

He even used his own method to calculate the distance between the moon and the ground.

In fact, if you delve into the ancient nine chapters of arithmetic and other algorithms, there is still a way to calculate the distance from the earth to the moon.

Li Su didn't expect that in this era, someone would really be able to calculate.

Li Su smiled and said: "If you want to calculate the distance from the ground to the moon, you can use the corner relationship of the triangle to solve it. ”

When Li Su said this, Li Su found that the face of the Tibetan envoy changed slightly.

This made Li Su feel more and more that this guy really knows how to solve the distance from the earth to the moon.

And, he used this method.

Therefore, Li Su continued: "Of course, it has to be an isosceles triangle, so it is important to find the key location. This midpoint is the closest place to the moon. Then the distance to the two sides of the eye is enough to take the bottom of the isosceles triangle, and this distance is limited to thousands of miles. Then according to the angle between the moonlight and the ground, and the distance from the ground, you can find the distance between the ground and the moon. ”

Can this method find the distance from the Earth to the Moon?

Well, in theory, it will definitely work.

But in reality, the error can be very large.

First of all, a thousand miles long, you have to make sure that the two points you are looking for are in the same straight line, which is a very difficult thing.

Secondly, the included angle is not easy to measure.

There is also the problem of the center point, which is preferably at the equator, otherwise it is unlikely to be an isosceles triangle.

And so on, in short, the error in this will definitely be very large.

And after Li Su finished speaking, the envoy of Tubo looked at Li Su stupidly, and directly hung somewhere, revealing an unbelievable look.

It seems that Li Su is indeed right, that is the method.

Li Su smiled again and said, "The moon is about 768,000 miles from the ground, I don't know the calculated value, right?" ”

"This ......"

The face of the Tibetan envoy once again showed a look of shock to the point of no return.

Well, in fact, there is still a big gap between the number on his paper and the number that King Shu said.

But this number is also within the range of 700,000 miles.

In other words, the two may have different results because of the different measurement methods.

But the method they use is absolutely fine.

Moreover, the Tibetan envoy did not dare to say that it was the miscalculation of the king of Shu.

Perhaps, the person who gave him this question miscalculated?

Therefore, the Tibetan envoy had no choice but to say: "Yes, this answer is right!" The King of Shu is a pedantic celestial, I admire it! ”

Seeing this scene, the audience below suddenly burst into applause.

Their Shu King is really powerful!

With such a difficult problem, they don't even have the slightest clue to solve it.

But the king of Shu easily found a solution and gave the answer smoothly.

King Shu, it's really amazing!

Seeing that the Tibetan envoys were defeated so quickly, the envoys of other countries did not look very good.

This question of the Tibetan envoys was extremely difficult, and they thought that they would not be able to do it at all.

But the king of Shu easily gave the answer.

So, I'm afraid their problem won't be difficult for the king of Shu, right?

At this time, the second messenger finally stood up.

This one is the envoy of Pishan Country, and Pi Xiake, and Pi Xiake, actually brought out a monkey.

"This monkey is the smartest monkey in our Pishan country, he can count and even do addition. Dare to ask, do you Datang have such a smart animal? ”

For some reason, after Pi Xiake said this, he suddenly felt a smile on the faces of the audience around him.