"I guess it's another person who sells his reputation and reputation, and I'll have to humiliate him later." One of them, an old man with a white beard, was on crutches in one hand and stretched out his beard with the other, trying to appear calm and relaxed.

He is a master in the world of arithmetic, from the Heavenly Sword Country, named Du Zheyi, and he has been studying the size of the Immortal Sword World for most of his life, and he has found nothing until now, how can he believe that a hairy boy like Wei Gong can solve the puzzle?

Du Zheyi has done his best to learn arithmetic, and has also followed some fleets to the sea, hoping to calculate the circumference of the world ball through his own footprints.

It was only because of many sea storms encountered on the way that he could not sail around the world, and the trajectory of the ship was not in a straight line, so it was inevitable that there would be errors, and in the end Du Zheyi could only be forced to give up.

However, he also estimated an approximate value through some experience and measurements, and if the value obtained by Wei Gong deviated too much from his expectations, he must make this little bastard look good.

"However, if this nonsense called Wei Gong is made up, and we don't have the right answer, how do we know if what he said is right or wrong?"

A peer on the side raised a question, which is also something that has troubled the people around him for a long time but no one dares to say it.

As soon as he spoke, someone immediately chimed in, "Yes, if this swordsmith is talking nonsense, how can we distinguish the real from the fake?" ”

Du Zheyi stomped the dragon head crutch in his hand on the ground, signaling everyone to be calm, "The old man has been studying this puzzle for many years, how can ordinary people fool me, just watch the show later." ”

When all the arithmetic scientists heard him say this, they all relieved themselves.

A group of people stood on a high place and looked at the situation in the field coldly, and two people still had a hint of a playful smile on the corner of their mouths, and they had been waiting to see the joke of the emiya for a long time.

On the other hand, the melon-eating masses who don't know much about arithmetic are talking.

"This swordsmith is crazy, he actually wants to measure the world, what kind of length of ruler does he need to measure?"

"Phew, the world is vast, the world is so big, how can it be measured casually?"

"That is, even if there is such a long ruler, how many people will it take to measure it, this swordsmith is obviously too self-conscious, and he actually boasted that Haikou would do such a vain thing of heaven's will here, I am afraid that it will not be long before it arouses the wrath of heaven."

When Emiya took out his measuring tools, everyone was stunned.

He had a tape measure in his hand, and it seemed to be no more than 50 meters long.

"What? Tape measure? ”

"Is he joking? This kind of ruler is too short to measure my terraces, and it can't be said that this world is smaller than my field, right? ”

"Hahaha, it's so funny, this person is simply an ant shaking a tree, he can't measure himself, just such a broken tape measure, if I can measure it, I will kick my head as a ball!"

There was an immediate burst of boos around.

However, Emiya didn't care too much.

According to his thoughts, in fact, he didn't even need a meter ruler, he had been a swordsmith for so long, as early as when he was promoted to the third level, the system had already turned on the accurate measurement function of weights and measures for him, in fact, he only needed to look at it, and the system would naturally show him the length.

Zhengyuan Tower, named after a great monarch called Jian Zhengyuan of the Dream Sword Country more than 1,000 years ago, has a long history and has stood on this beautiful land for thousands of years.

The reason why Emiya chose it is actually relatively simple, the height of this tower is an integer value, which is exactly 20 meters.

It was most convenient to use a plumb line to calculate, and it was only for the dramatic effect of this measurement that he proposed to use the Zhengyuan Tower as the object of the experiment.

This was also negotiated with Kenrin Sakura.

In the future, people will remember the name of this tower and the great monarch of the Dream Sword Country.

However, using a relatively tall building as a measurement object has another advantage, that is, it can improve a lot of measurement accuracy.

He took the tape measure in his hand, then looked up at the sky.

Everyone raised their heads in unison, not knowing what Wei Gong was looking at.

He's waiting for a moment.

When the sunlight hits the ground of Kira Castle.

According to Jian Rin Sakura's arrangement, Master Liu Dun would keep in touch with them through the Qiankun Mirror in Muliang City, and if the time was up, he would tell them.

The so-called time is up, that is, when the sun shines directly on Kira Castle, there is no shadow on the ground.

Eratosthenes of ancient Greece was the first to calculate the diameter of the earth, many years ago one day in the ancient Egyptian city of None located on the Tropic of Cancer, the sun was on the top, and the well fence could not reflect the shadow, and the plumb line was tested, and the sun's rays coincided with the plumb line; But at the same time in Alexandria, the sun's rays were at an angle of 7°12' to the plumb line, and thus the shadow appeared.

After a long period of research, Eratosthenes finally obtained the data that the circumference of the Earth was 46,240 kilometers, which was of epoch-making significance, and it differed from the exact value of the Earth by less than 15%.

It's really a coincidence, the center of Muliang City and the Zhengyuan Tower in the Dream Plaza of Monluo City happen to be on the same longitude line, which provides a lot of convenience for the calculations to be made later.

It's easy to tell if the longitude of two places is the same, just lie on your back on the ground and watch if the sun sets over the horizon at the same time.

If there is no time difference, it means that it is at the same longitude.

In the crowd, a man in a cloak was silently watching everything that was happening here.

From the dark cloak, there seemed to be a cold light shooting out, making Emiya feel a little uneasy.

He looked back and saw only a departing back.

A sense of déjà vu.

I don't know why, when he looked down, his palms were already covered with sweat.

It's a weird feeling.

He was like a prey to a terrible beast.

The cacophony of voices all around drowned out everything, and as soon as the feeling of stabbing on the back disappeared, the whole world suddenly became beautiful again.

Today's weather is good, cloudless, just right for observation.

The sun gradually climbed up and slowly hung into the sky.

At this time, the sunlight was already very dazzling, and it was impossible to force it with the naked eye, and everyone put up a pergola in their hands and looked down at the Wei Palace.

After a while, a message came from the Qiankun mirror, "The hour has come." ”

Liu Dun's brain, which was about to lose his hair, was revealed in the Qiankun mirror, and then squeezed out a smile.

Anyone could tell how nervous he was.

Indeed, this is a matter of reputation.

Succeeded, thousands of people admired.

Failed, and everyone spat on it.

Liu Dun didn't dare to take this risk, it is estimated that no one in this world except for Jian Rin Sakura will be able to wholeheartedly support Wei Gong and let him come so nonsense.

Emiya nodded, then lowered the tape measure in his hand to the ground and began to measure the shadow of the tower.

According to his instructions, Liu Dun just made a preview about ten minutes in advance, which was to give him time to buffer.

After all, with the migration of daylight, the shadow will also change, and if it is not the data on time at that time, it will lead to a large error.

Later, when the sun is shining directly and there is no shadow of the objects in Muliang City, Liu Dun will report it again.

Seeing him laying a tape measure on the ground, everyone couldn't help but hold their breath.

There was silence in the room.

……