Lord of the Desert

Chapter 37 Pi

After both tubes of mana were exhausted, it was almost noon.

Hong Fan sat down next to the tree stump, took out the pancakes and bacon that Bentley was carrying, and ate.

While eating, he kept thinking.

In the past two months, he no longer has a monthly salary, but Zhu Yiqi's monthly salary of five taels has been received on time without compromise.

Counting the previous balance, Hong Fan has a cash reserve of 34 taels of silver, and the martial arts resources can last for about four months.

Although he was very reluctant to admit it, he knew that his talent had been fulfilled to the limit.

Based on the speed of penetrating a serious path in two months, and considering the fact that martial arts practice becomes more and more difficult as it goes up, Hong Fan predicts that he will be able to enter the Chaos Realm around 21.

There are two major prerequisites for this.

One is that there is no bottleneck when passing through the customs.

The second is to maintain an investment of at least 400 taels of silver every year.

"400 taels..."

Hong Fan swallowed the bacon and sipped his teeth.

This money can buy [-] acres of farmland and hire at least five experts in the penetration realm to work hard for a year.

Even if it is a landlord family with a thousand acres of land, it is not easy to provide it - after all, the whole family can't just eat, drink and practice unrestrainedly, and the rest of them will cut down on food and clothing for him.

But even so, at the age of 21, Hong Shenglai, who had just entered the Chaotic Realm, was still far behind Hong Shenglai, who had just entered the Chaotic Realm's Six Meridians.

[Now that I think about it, God has treated me very favorably to my status after time travel. 】

Hong Fan stacked the last corner of the pancake and chewed in one bite, thinking.

[If the soul wears to the ordinary people's house, just finding the Yanliu Kungfu level of kung fu is not known how remote it is. 】

[In addition, Jinhai City is too remote...]

At this time, how could he not think of the Dragon Soul Fruit?

Nibbling on a piece of fruit is much more exciting than Tui Gong Wan.

But the problem was that even if Hong Fan had a few face-to-face encounters with the Dragon Soul Tree every day, he still couldn't figure out the mechanism of its result.

The only guess at present is to kill Xingjun or capture authority.

But Jin Haicheng doesn't have a second star king besides Hong Fan himself, and even if there is, he doesn't have the ability to kill one.

"There is a treasure mountain in the sky but there is no door to it, what can I do?"

Hong Fan sighed, and from the corner of his eye, he caught a glimpse of a grass-yellow prong-horned roe deer peering sideways in the bushes in the distance.

When he thought about it, he reached out and grabbed the horn bow.

During the recent period, Hong Fan practiced very hard, and his appetite became bigger and bigger.

In order to save money as much as possible, he often hunted for meat himself.

But when he was drawing the bow, Hong Fan remembered that there was still a half-eaten wild boar at home, so he finally gave up.

The roe deer in the distance didn't know that he had walked around the gate of hell, but walked away slowly along the twigs of the shrubs.

······
On the same day, in the afternoon.

Hong Fan passed through the east gate of Jinhai City and entered the city amidst the warm greetings of the sergeants.

Pedestrians on the road, regardless of gender, almost everyone will look at him for a while.

Hong Fan has long been used to this.

In this world, a Bentley that has been steered is comparable to a sports car that has been tuned and handled in a previous life.

The exquisite hornbow and horizontal knife are similar to assault rifles.

Coupled with the handsome appearance, it is strange that there is no turning heads.

After crossing two streets, Hong Fan stopped in front of a small stall, intending to buy some fruits.

At this moment, a conversation reached his ears.

"The finer the cut, the less the loss; the cut again and again, until it cannot be cut, and it fits into the circle without losing anything..."

"Cut cut cut, I'll cut you a ball! This circumscribed polygon has been cut to almost one hundred thousand, which is still not enough, can it be cut to a million, tens of millions?"

Hong Fan followed the sound and turned his head, and saw two young men in blue robes with their sleeves tied passing by behind them.

This kind of uniform is the standard equipment for the supervisor.

"There are eleven microdigits (decimals), and the precision is already very high!"

The one with the bigger head on the left of the two continued to complain.

"What's the use of further calculations? Even those Tianzihao craftsmanship projects under the supervision of Dajianzao cannot use such precision..."

"Heh, isn't it because it's useless that we need to count?"

Another Zhao Fenger replied with a sneer.

"Calculate his whole life, and then calculate a few micro-numbers, maybe it can be used in the future?"

"But anyway, we can't touch the light."

"Too."

The big-headed man sighed upon hearing this.

"Following the master was dispatched to this remote village, I shouldn't have expected to get any important job..."

Speaking of this, the two were speechless, and became more and more depressed.

If it is ordinary people, or noble sons of aristocratic families, they can't understand what they are saying at this moment.

But Hong Fan understood instantly.

The two were apparently discussing the geometric calculation of pi (π).

The so-called "geometric method" is to start from the unit circle, first use the inscribed regular hexagon to find the lower bound of pi is three, and then use the circumscribed regular hexagon and use the Pythagorean theorem to find the upper bound of pi is less than four.

Then, double the number of sides of the inscribed regular hexagon and the circumscribed regular hexagon respectively, and turn them into regular dodecagons respectively, and then use the Pythagorean theorem to improve the lower and upper bounds of pi.

According to what the two said, "the circumscribed polygons can be cut to almost 98304", Hong Fan did a little mental calculation and knew that it was 3 polygons (2*15^[-]).

The pi accuracy of eleven decimal places means that the deviation of kilometers-level components is only a dozen nanometers, which is enough even in the industrial age.

The geometry method has been played to this point, and it is extremely cumbersome to cut the polygon down.

The most important thing is, even if it is cut off for a lifetime, what is the point of counting an extra ten or twenty?

[It's no wonder these two are so frustrated. 】

Hong Fan thought, realizing that his chance had come.

When he was young in his previous life, like many other children, he was forced to recite ancient poems and [-] digits of pi by his parents who expected his son to become a dragon.

Now that his twenties have passed, he can still remember most of them.

It's not just the result.

As a man of science and engineering, he not only knows geometry, but also analysis—for modern engineers, this is really not a high-end content, only a Taylor expansion is enough.

So, Hong Fan immediately went up to talk to him: "You two, I take the liberty to overhear your conversation. Are you talking about calculating pi?"

The big head and the windy ears are already in a bad mood, and they immediately want to scold them when they are disturbed.

But seeing Hong Fan wearing a red military uniform and carrying a BMW bow and knife, he suppressed his temper.

"This young master also knows pi?"

The big head asked with a raised eye.

He knew that the other party was probably a member of the Hong family.

However, as a second craftsman with a serious official status as a supervisor of utensils, he came from the state capital, and his big head was not much valued by the locals of Jinhai.

"A little understanding, I have always liked numerology, and I have spent time studying this field in the past few years."

Hong Fan replied.

"Oh, that's good. Doing more calculations can activate your brain."

Zhao Fenger obviously didn't want to chat with this overly handsome warrior—these guys with heads full of muscles, can they know how to count eggs?
"We still have something to do, this young man will leave now."

He cupped his hands casually, turned around with his companions, and planned to leave.

At this moment, the two heard words from behind.

"3.1415926535897."

As soon as the thirteen digits after the decimal point came out, Zhao Feng was startled, tripped over a paving brick, and rolled down on the street.

(End of this chapter)