future library.

Chapter 26 Land Surveying
Liu Bin is a provincial-level senior official, and he took an important position in the most important province of the Great Xia Dynasty. According to common understanding, even on the way to his post, he would not have much time, let alone talk with a young man about the upcoming policies implemented.

Perhaps it was Cheng Jinzhou's outstanding performance that gave Liu Bin the urge to seek medical treatment in a hurry.

Cheng Jinzhou didn't know much about politics, and relying on his young age behind the possession, he moved his body slightly and said, "It's no problem for me to measure the land by myself, but the calculus I talked about yesterday can be used It's very slow to get up."

In fact, it is not just a problem of slowness. Calculus is not an apple bought by Newton with a piece of blood. In addition to the application of various formulas, real calculations also need a lot of accumulated data-for future generations. It's just a look-up meter, Cheng Jinzhou doesn't have such a thing in his hand.

If you want to complete all the calculation results of calculus over the years by yourself, it is basically impossible to complete the task without the help of a large computer and other information.In other words, science in the 21st century has developed to the point where the lonely hero is useless.

Liu Bin was obviously disappointed and nodded lightly: "Mr. Liu Kuang suggested setting coordinates for the entire province's land from the air, but this would require hundreds of star warlocks and would take up to two to three years. Although it was already very fast... ..."

"But too expensive?" Cheng Jinzhou shrugged slightly. A 6-seat helicopter rarely costs more than 1000 US dollars an hour. Converting food into silver, it’s only 30 taels. No one is willing to take this amount of money for an astromancer who can fly in the sky—even so, To measure land in modern times, no one would use hundreds of helicopters—this is the gap in production efficiency.

"Yeah." Liu Bin sighed, then smiled and said, "Forget it, let's just chat casually, Yang Ming, you go and get ready to pack."

"I have a way to make you spend less money, but it's impossible to say that you don't spend money." Cheng Jinzhou quickly used his brain, hesitated for a moment, and finally said it.This master transfer envoy is the real benefactor.He has a noble status, does not understand mathematics, and has a close relationship with himself. It is an excellent and natural place where the first barrel of gold mines is produced.

Yang Ming said "Oh", and sat back regardless of his identity, and he and Liu Bin both listened attentively.

From guard envoy to Hexi transfer envoy, Liu Bin was promoted by leaps and bounds in terms of power, and he was young, so he naturally had great ambitions.Measuring the land, opening up tax sources, and even reforming the aristocratic system are all part of the ambition, but at the beginning stage, the plan fell into a bottleneck, and under the desperation, he couldn't care less.

Just like the birth of a mathematician, in the history of astrologists, there are many who became famous at a young age, and the two will not underestimate Cheng Jinzhou.

Looking at their appearance, Cheng Jinzhou couldn't help rubbing his head, and said helplessly, "Do you understand?"

"Go ask Mr. Wu to come here." Liu Bin reacted quickly and shouted out immediately.One of the purposes of his coming to Cheng's house was to borrow some of the astrologists he enshrined, and Wu Zong was also a good match for him.

Cheng Jinzhou took the opportunity to sort out his thoughts. The ring is hopeless now, but he has to rely on the little knowledge he has accumulated to support it in exchange for money. It is a bit sad to think about it.

Wu Zong jogged into the living room with a pious expression on his face, bent down in a proper manner, shrunk his shoulders, straightened his arms and bowed deeply, which was actually a disciple's courtesy.Astromancers have their own life principles, and the worship of intelligence and knowledge is the most important among them.

Cheng Jinzhou didn't know it, but he was stunned by Liu Bin and Yang Ming.

After Wu Zong finished his salute, he sat quietly beside Cheng Jinzhou, with his hands on his legs, like a primary school student.

Cheng Jinzhou didn't focus on him either. Seeing the person arriving, he blinked and said, "In the current environment, to quickly measure the land of a province, Warlock Liu Kuangxing's method should be the fastest."

Liu Bin nodded in agreement. If astrologists were not used, it would be possible to measure land on a large scale for ten years.

"Let me tell you two ways to reduce costs." Cheng Jinzhou said, subconsciously making a gesture of holding a pen. Wu Zong, like a preying sparrow, immediately handed him a hard-bristle pen, and then took it out of his arms. He took out the paper and carefully laid it out on the table with a look of anticipation on his face.

For the star warlocks who have no grades, the mathematics that represents the cutting-edge of the times is what they look forward to most.

Cheng Jinzhou rubbed his nose, and wrote while writing: "The most difficult land to measure is mainly hilly slopes and terraced fields. In this regard, I have an algorithm that can accurately measure the area and speed up the speed. Suppose there is a terraced field. When measuring, two people hold a tape measure, start from point A of the terrace, and advance along the two sides of the terrace to point B, and measure the length of the string every time they walk a certain distance. It is required that the strings are parallel and the distance is equal... "

Accompanied by a string of numbers and proper nouns, beads of sweat soon appeared on the tip of Wu Zong's nose, but his cheeks and forehead were flushed with excitement.

Even in the 21st century, land surveying will not use a lot of high-tech, especially in China, it is best to be simple and easy to measure in units of townships.

In the Great Xia Dynasty, the problem was different. This was not a society dominated by the small-scale peasant economy. The fields of the big landlords were full of fields, and the manors of the big nobles were intertwined. It only took more energy to sort out their land.

As a staff member, Yang Ming also knows a little about mathematics. He nodded and said after looking at Cheng Jinzhou's picture: "His Excellency Liu Kuang said that when measuring coordinates, there will be errors in such uneven land. In this way, There are a lot of problems to be solved.”

"Let's talk about the next one." Cheng Jinzhou didn't stop, and said with a brush stroke: "I actually have some experience in coordinate measurement... Can the three of you keep it a secret?"

"We can submit the results to the association!" Wu Zong called out first, and said confidently: "Coordinate calculation is truly top-notch mathematics. As long as you can develop a little bit, the association may give you extremely high rewards." Yes, maybe because of this, you may be awarded a grade, and when the time comes to change to some high-level star arrays, who would dare to have any ideas?"

"I have my own ideas." Cheng Jinzhou knew it very well and continued: "Can I keep it a secret?"

Seeing Wu Zong's attitude towards Cheng Jinzhou, Liu Bin looked at him completely at eye level, nodded heavily and said, "Liu swears."

"Yang guarantees with the lives of his whole family."

Wu Zong had no choice but to resist going to Jinzhou, so he finally raised his head and said: "In the name of the Star God!"

Then he said unwillingly: "Associations all use the contribution system. To exchange for star arrays and to understand other people's research results, there is always an exchange."

"That's for later." Cheng Jinzhou had to be careful.Analytic geometry and calculus are the two beginnings of modern mathematics, and modern mathematics is the beginning of modern science. Geniuses cannot solve these two problems independently.He didn't want to throw out analytic geometry while revealing the tail of calculus.

"Without affecting the accuracy, I only need fewer points to measure more areas." Cheng Jinzhou drew a simple irregular figure on paper, and said: "Here are a few formulas that can be applied ...Of course, you should give it to Warlock Liu Kuangxing for verification, but don't tell him that I wrote it."

Yang Ming couldn't understand the formula, but shook his chin frequently and said, "If there are fewer points to measure, there will be fewer astrologists to use."

"Exactly." Cheng Jinzhou laughed.In fact, the coordinate method is more used in road construction, because such as roads, etc., they must be flat without folding, and there will be no ditches that are often found in fields.However, in the Great Xia Dynasty, stretches of land were the mainstream, which is somewhat like an agricultural country in South America.

Compared with the analytical geometry of the 17th century, what Cheng Jinzhou can produce is really too much.Even if he is a Ph.D. in physics who doesn't study hard.

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(End of this chapter)