Before they knew it, a large number of orcs had gathered around them, including tiger orcs and eagle orcs who had come specifically to watch the spectacle.

Bai Hong and Bai Feng stood to one side, while Ming Yan, Hu Qiao, and others stood on the other side.

The space in the middle was left for Si Yan and the wise old man from Monkey Village.

It felt like a martial arts competition on Mount Hua.

As Si Yan was wondering what kind of question the wise old man would ask, she saw him draw a right triangle on the ground.

Several question marks appeared on Si Yan's forehead.

The wise old man sat down, and he transformed, appearing very composed and mature.

He pointed to the triangle and said, "Teacher Siyan, here are three bamboo trees of the same length, and on this side are four bamboo trees of the same length. How many bamboo trees of the same length are on this side?"

Si Yan glanced at it and answered without hesitation, "Five."

The right triangle is a 3-4-5.

There's nothing that requires thinking.

However, the old man's pupils dilated sharply at her casual reply.

The people of White Eagle City and Black Tiger City lowered their heads and whispered among themselves.

"Are there really five?"

"I'll go cut some bamboo and try to piece it together."

Black Tiger City and White Eagle City, along with the orcs from Monkey Village who arrived later, went to try it out in three waves.

As expected, there were indeed five bamboo stalks of the same length.

The way everyone looked at Si Yan changed slightly.

"She must have been guessing."

"This must be a fluke."

"Yeah, how is that possible? How is this calculated?"

The wise old man patted his bottom and slowly stood up.

He picked up a branch, drew a circle on the ground, and placed a dot in the very center of the circle.

"Teacher Si Yan, assuming the distance from this point to all the lines is the same, which is the length of a tree branch, then how many tree branches would this circle be?"

Si Yan blinked.

Isn't this simple?

Find the perimeter.

2πR. π = 3.14

The answer is the length of 6.28 tree branches, but there are no decimal points in this world, and I can't explain the decimal point myself...

Si Yan thought for a moment.

The orcs of Monkey Village started jeering: "You can't even do that?"

Then the eagle beastmen started to jeer: "It really was just a coincidence before."

Under Mingyan's suppression, no one in Black Tiger City dared to say a word.

Si Yan thought for a moment and said, "It's not that I don't know how, it's just that it's not easy to explain."

The wise old man stretched out his hand, serious and earnest: "Try to say it."

Si Yan nodded and said, "More than six branches plus one half a branch, plus a little more."

Everyone present fell silent.

Then they started chattering again.

"That's just what she says, but it's hard to prove."

"Yes, yes, there's always some margin of error when rolling a branch."

Si Yan turned her head and looked around: "It can be proven, it's very easy to prove."

The wise old man smiled and said, "Teacher, please tell me."

Si Yan smiled and said, "Can anyone give me a soft vine?"

The orcs did all this very quickly, and soon a vine softer than silk thread was handed to Si Yan.

Si Yan twisted the vine and walked to the circle drawn by the wise old man.

Because the wise old man's drawing wasn't straight enough, Si Yan placed a small twig at the dot, used a rope to measure the length of the twig as the radius, and drew a very neat circle around the dot.

Such a perfect circle made everyone's eyes widen.

It seems that this little teacher Si Yan is really quite skilled.

Si Yan gestured with the branch and explained, "This is a circle, and the distance from each point here to the circle is the distance of this branch."

Everyone nodded in agreement, watching to see what she would do next.

Si Yan carefully laid the vine along the circumference of the tree and then recorded the starting and ending points.

Everyone continued to stare intently at her.

She suddenly pulled the vine apart, and the entire vine straightened out again.

The wise old man's eyes lit up: "It's changed from a circle to a straight line!!"

Si Yan used a branch to measure the length of the vine.

"One, two, three..." Everyone unconsciously started chanting along with Si Yan.

"Four, five, six... My God, it really is six roots!"

"Don't forget, there are still half of the branches behind."

Si Yan immediately broke the branch in her hand into two pieces, and then broke it into two equal pieces.

The last quarter of the paragraph was gestured over.

It was just right! The final error of 0.03 is almost negligible.

"Oh my god!!! It's just right!!!"

"Oh my god, she did it!!!"

"This is a question set by the Wise Old Man!!"

The old man's eyes were now filled with reverence. He stood up and said respectfully, "Teacher Si Yan is a wise man, I admire him."

A wise man?

Si Yan did not claim the money. She couldn't help but yawn, and a few tears welled up in the corners of her eyes.

"Sorry, I didn't sleep well last night," Si Yan said with an embarrassed smile.

I dreamt of that purple snake demon king for three nights in a row, so I really didn't sleep well.

The wise old man looked intently at Si Yan and continued, "I wonder if Teacher Si Yan would be interested in visiting the City of Ten Thousand Beasts after the Blazing Day ends. Only in the City of Ten Thousand Beasts can Teacher Si Yan's talents be developed and utilized."

Si Yan chuckled and said, "Let's talk about this later."

The wise old man stroked his beard and smiled, "Teacher Siyan, please keep this matter in mind. I will go to the City of Ten Thousand Beasts first and wait for you there."

Si Yan glanced at Zhi Sou a couple more times, somewhat puzzled.

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