Three Kingdoms, at the beginning of the game, recognize the thief as the father, hit the spectacle,

"Based on what you said, Mr. Zhang, you have done Ben Hou a great favor. It is too late for Ben Hou to thank you. What do you need to be ashamed of?"

Smiling and flattering the other party, Zhang Yan saw the other party nodding slightly towards him, and finally understood why Wei Xian and others were able to complete the sundial in just over three months, and many of them were relatively advanced. The improved tools have some positive effects on their work.

Speaking of this matter, Zhang Yan couldn't help but feel a little bit emotional. Under the impetus of various factors, he really hammered out the sundial in about three months.

You must know that in ancient times, especially in the Qin and Han Dynasties, living materials were relatively scarce, and it was difficult for most people to even eat enough and cover their bodies. Something that lasts a very long time.

And this is not only because more than 2000 years ago, people's construction tools were relatively simple, without some advanced tools to assist, but also because people had to farm in spring and summer and harvest in autumn, and there was no way to devote themselves wholeheartedly to it like modern times. The reason is in the construction work.

If it is a dynasty of any period, even the Eastern Han Dynasty, which was once in a strong period, wants to mobilize tens of thousands of people to work in the same area at one time, even if the food consumption on the way back and forth is not considered, even if the recruitment of civilians is necessary for the local The blow caused by production required the emperor who was in power at that time to weigh it carefully for a long time.

And if it is gathered together by many coincidences like Zhang Yan, it is almost an unrepeatable thing for a dynasty in the feudal era.

First of all, as an aristocrat in Luoyang, Zhang Yan did not have the right to directly recruit peasants from all over the country for labor like the emperor, but because the years around the fifth year of Zhongping were really bad, and at the same time, there were a large number of peasants who died due to the war. As a result, the peak number of workers at Zhang Yan's sundial construction site exceeded 7 to 10, which was approaching the [-] population mark. This is almost [-]% of the current population of ordinary people in Luoyang City. It is also difficult to recruit such a large number of laborers at one time.

What needs to be known is that the work enthusiasm and ability that people can radiate in a state of adequate nutrition are naturally not the same as those in a state of starvation. "The usual opening method has cost several times the cost to speed up the construction of this spectacle.

Different from those ruling dynasties that need to consider the construction cost, because Zhang Yan is actually quite rich in his hands, and at the same time, the adoptive father Zhang Rang who "disasters the court and is arbitrarily assertive", the property that the two can use is almost already It has reached the level of assets in a country's treasury, so this time Zhang Yan did not treat those migrant workers who worked hard for him in terms of food and other aspects. Even if he invested a lot of money, he ensured that they were well-nourished.

And this is naturally not a decision that those rulers who pursue "cost performance" and "low cost" will make easily.

Before Zhang Yan led his troops to leave Luoyang, although he and Wei Xian and others set a construction period of about three months as a deadline, but when Zhang Yan set off, he also completed the progress of the construction of this spectacle early. Due to some unexpected reasons, you have to be mentally prepared for the final postponement.

As for seeing that the construction progress has advanced to [-]% before returning, to be honest, it can be called a kind of unexpected joy for Zhang Yan.

Don't you see that even the Qin Emperor Long Yingzheng, the ancestor of the Qin Emperor, used nearly 30 people to build a Great Wall in the north to defend China, and it took 33 years to complete it.

And even if there are factors such as workers' passive sabotage and lack of dedication, it can be seen how difficult it was to build large-scale construction in ancient times.

Now Wei Xian only brought less than 10 laborers to complete the construction of a sundial like a small pyramid within three months. Zhang Yan is naturally satisfied with 1 and [-]. No comments on progress.

But after talking about this matter today, he couldn't help recalling a strange incident he encountered yesterday when he held a sacrifice on the sundial platform, and he couldn't help asking everyone present:

"By the way, Wei Xian, yesterday I saw that the surface of the sundial was as seamless as the entire sculpture, and there were hardly any gaps in it."

"As for the sundial surface, I just estimated it with my eyes. It is nearly three feet long, three feet wide, and three feet thick. How did you transport such a huge piece of white marble to the sundial platform that is nearly [-] meters high? "

Some curiously asked Wei Xian and Zhang Ju, Zhang Yan was surprised yesterday, the density of this whole piece of white marble is close to 200 kilograms per cubic meter, and the dial alone has a terrifying mass of more than [-] tons weight.

But now the Eastern Han Dynasty is not the era when hydraulic cranes can be popular in the later generations. A piece of stone weighing two hundred tons, let alone how the people transported it from the original place of Fangshan to the city of Luoyang, just transported the stone. Getting to the sundial platform is not something that can be done with the old wooden frame pulleys used by Wei Xian and others.

Chapter 48 Fufeng Majun

You know, the Eastern Han Dynasty was not the era when hydraulic cranes were popular in the later generations. Not to mention the huge stones weighing more than 200 tons, even a piece of bluestone weighing two hundred catties, it would be difficult for ordinary people to eat if they were not full. Lift it up.

As for the fact that Wei Xian and others were able to transport a whole piece of white marble to Luoyang City and place it on the sundial base under such primitive conditions, Zhang Yan was suddenly curious about the method used by the other party.

Fiction group: ②0б8

Hearing his question, Wei Xian was on the sidelines before he could make a sound, a clear and hearty laughter came from the side.

……

"Pfft-"

"You are really interesting, Marquis of the Kingdom of Wan. That whole rock may weigh tens of thousands of stones, so how could it be possible to lift it up by manpower."

"Fortunately, I thought you were a rare smart person when I saw that you said something clearly and logically, but I didn't think that smart people would be stupid sometimes."

Some clear voices came into Zhang Yan's ears, and everyone turned around to look at them in unison. They saw that among the two people who had followed Wei Xian in earlier, the old one and the young one, except for Zhang Ju, the one who was a little The immature boy was leaning over the table and laughing, looking a little out of breath.

Seeing this man's rude behavior, Zhang Yan didn't feel angry. Instead, he looked aside with a questioning look, a little embarrassed, and kept pointing to the young Zhang Ju and others with his eyes.

"This... I don't know what this young master means, why is this Marquis not quite understanding?"

Confused, he asked Zhang Ju. Zhang Yan hadn't made a sound since he entered the private room, and the first sentence he said was the young man who was mocking him.After hearing Zhang Yan's words, Zhang Ju also quickly reached out and pulled the corner of the boy's clothes, signaling the other party to restrain himself, and then introduced to Zhang Yan in a deep voice.

"Don't take offense to the Marquis of Wan, this is my old friend, Ma Jun and Ma Deheng from the Fufeng Ma Family."

"He just laughed, and he definitely didn't mean to ridicule you. It's just that the dial of the sundial you asked about earlier was not made of a whole piece of white jade, but a large number of jade stones glued together."

A little embarrassed explained to Zhang Yan, Zhang Ju also felt a little embarrassed by his friend's unreasonable behavior in front of the other party this time.After Zhang Yan heard this, he waved his hand to indicate that the other party should not care, and then focused on the somewhat familiar name that Zhang Ju said earlier.

"Ma Jun? Why does this name feel so familiar..."

"Isn't this in the middle and late period of the Three Kingdoms, Cao Rui's big brother who helped Wei Guo reproduce and improve Zhuge Liannu?! He was born so early?"

Looking at the handsome young man who looked at him with a smile on his face in disbelief, Zhang Yanzai never imagined that not only did he meet a descendant of Zhang Heng, a great mathematician who is one of the five sages of Nanyang, but also Also here in Luoyang, I ran into Ma Jun, a skilled craftsman who can be said to be a famous and well-known craftsman during the Three Kingdoms period.

And although the current opponent looks like he is only fifteen or sixteen years old at most, and he looks like he has just grown up, but Zhang Yan, who knows the opponent's future achievements, suddenly inevitably has a desire to solicit in his heart.

You must know that gold shines wherever it goes. Ma Jun created a lot of value even in a relatively traditional force like Wei, and helped the Cao family regime greatly improve the strength of the army. strength.

Then bring it by his side, Zhang Yan believes that the role that the other party can play for him in the future will definitely be more magnificent than the achievements made in the original world line.

What's more, although being young means that the opponent's experience and ability have not yet undergone considerable development, but from another perspective, it also shows that Ma Jun has not yet fully developed and formed at this time, and there is still a lot of room for later shaping. .

And if the opponent can be taken under his command, then gunpowder, which is one of the three great inventions of the traverser along with cement and glass, will finally have the soil to appear.

Long before he came to the Eastern Han Dynasty, Zhang Yan had discussed with some friends that in the late Eastern Han Dynasty, apart from some famous civil servants and military generals, there were other geniuses who needed to be recruited as soon as possible as the ruler.

And Ma Jun, who is very good at ordnance manufacturing, especially with a certain spirit of improvement and innovation, stood together with the medicine sage Zhang Zhongjing, surgeon Hua Tuo, and a blacksmith surnamed Pu from the Shu region, standing on the list of talents necessary for traversers. first echelon.

Staring at Ma Jun who still had a smile on his face, Zhang Yan decided to establish a good relationship with him the first time he wanted to solicit.

And since he wanted to build a good relationship, he naturally didn't get angry because of Ma Jun's ridicule before, but instead approached him kindly.

"Oh, so it's Mr. Ma from the Fufeng area. Benhou has heard of your reputation for a long time."

"It's just that I don't know the previous question, can Mr. Ma answer one or two questions for me?"

He complimented the other party with a smile on his face. As an adult who has been in the society for several years, Zhang Yan naturally knows how to deal with this kind of young man who has just passed puberty and is full of self-satisfaction. get along with.

And as expected, after saying a few nice words, when Ma Jun saw Zhang Yan subdued, he immediately lost his previous sneering thoughts and became a little excited instead.

"He said he had heard of my fame?"

"So I'm so famous in Luoyang? Sure enough, my father may not be right to let me immerse myself in studying hard. If I study this ingenuity well, I may not be worse than those scholars!"

I was a little excited to think that after hearing Zhang Yan's words, Ma Jun's attitude improved a lot almost visible to the naked eye.Unlike Zhang Ju, who was a famous scholar in the late Han Dynasty, although Ma Jun can be regarded as a scholar, he is really a child of a poor family, and his social status cannot be said to be too good.

Not to mention being praised by a big man like Zhang Yan, when he was still in his hometown in Fufeng, as long as he didn't get scolded by his parents for not studying, it was considered a good thing.

But now seeing Zhang Yan's appearance of "asking for advice with an open mind", the vanity of young people like Ma Jun was immediately greatly satisfied.

"Small things, small things, please listen to me carefully, Marquis of the Kingdom of Wan,"

Quickly cupped his hands and bowed to Zhang Yan's figure. Although Ma Jun said that he was a little unreasonable before, it was because of his own quick thinking that he had already figured out the other party's temperament from Zhang Yan's previous behavior. Know that the other person won't be offended by it.

But now that Zhang Yan took the initiative to ask him for advice, Ma Jun naturally got up quickly, without pretending to be profound, and brushed off Zhang Yan's face.

"Wan Guohou, in fact, it may be that you were not very familiar with those civil engineering craftsmen before, so you didn't know some of the methods often used by these craftsmen."

"Not to mention the huge three-foot-long sundial, even the stone materials used in those houses and palaces are mostly made of glue."

Chapter 49 Accidentally Acquired Early Math Talent

"You don't know, Marquis of the Kingdom of Wan. When building large buildings such as houses and palaces, it is a very common practice to use glue to bond stone materials."

"As long as lime is mixed with thick glutinous rice paste to fill the stones, and then the excess part is scraped off with a scraper, the white building material will hardly show any gaps after drying."

"The surface of the previous sundial, even without mentioning the various gold, silver and jade embellished on it, still weighs more than 3 stones."

"In order to help Wei Zhuangshi and the others complete the dial, Brother Zhang and I divided the sundial into ten inner and outer rings of equal weight, and each ring was divided into sixty equal pieces with the center as the axis. The sundial was transported to the platform in sections and glued with lime mortar."

"Even so, the weight of each stone in the end reached [-] stone, and it was transported up with the help of pulleys and levers."

He roughly introduced the method used by himself and others to Zhang Yan. Although Ma Jun's tone was still relatively humble at the moment, he talked about the time when he perfectly divided and reassembled the sundial with the help of everyone. A look of pride appeared on his face.

After hearing this, Zhang Yan nodded thoughtfully, and suddenly understood that his previous question was indeed a bit out of touch with people's livelihood.

We must know that as early as 500 years ago, when the first emperor Yingzheng built the Great Wall, he used a large amount of glutinous rice slurry mixed with tung oil to glue the stones used to build the Great Wall.

Now that the Qin and Han dynasties have been combined for more than 400 years, this architectural technique commonly used by craftsmen has naturally been fully developed.

According to Ma Jun, not only mixing lime can be used to fill the gaps of white stone, but also if the family is rich, there are many people who mix cinnabar and other fuels in the thick glutinous rice slurry to smear and glue those with richer colors. of the wall.

As for the use of lime mixed with glutinous rice as an adhesive, it can only be regarded as entry-level common sense in the construction industry.

Slightly nodding in Ma Jun's direction, Zhang Yan now understands how the final construction of the 200-ton sundial was completed.

He just carefully recalled what Ma Jun said earlier, but he suddenly discovered a relatively detailed place in the other party's words, and at the same time, his eyes suddenly lit up when looking at Ma Jun.

"Wait, Mr. Ma, you just said that you helped my workers divide the face of this sundial into [-] equal parts to carve and cast respectively. Doesn't that mean that you are very proficient in graphics and calculations?"

Looking at Ma Jun in disbelief, Zhang Yan suddenly remembered that if he wanted to cut the white marble perfectly, in addition to the craftsmanship of the craftsman, he also needed the person in charge of cutting to have a very strong calculation ability.

And it would be fine if the junior high school students in the later generations had already been exposed to geometric algebra. In the Eastern Han Dynasty, those stonemasons who ate their crafts were absolutely impossible to have such a high level of mathematical ability.

Undoubtedly, since Ma Jun said that the sundial surface was perfectly divided into more than [-] parts, even if there is a slight difference in the weight of each stone, the difference will definitely not be too big.

And if the stonemason in charge of cutting does not have such a strong ability to calculate, it is obvious that one of the two people present must happen to be proficient in geometry and algebraic calculations, so that he helped the craftsmen do all the work before construction. Prepare.

Thinking of this, Zhang Yan's eyes on the two suddenly became more fiery.

……

"Proficient in counting...? It's okay...in fact, it's mainly because Brother Zhang Ju is good at it. I just showed the results of his calculations to the craftsmen in a graphical way..."

He scratched his head in embarrassment. On the other side, Ma Jun felt quite proud after hearing Zhang Yan's words, but he didn't take all the credit for himself. Instead, he revealed it to Zhang Yan. It was revealed that the mathematician was Zhang Ju, another person present.

2○б⑧56ろ

After hearing what the other party said, Zhang Yan suddenly remembered that Zhang Heng, Zhang Ju's ancestor, was extremely proficient in arithmetic, especially in geometry.

According to the records in the historical materials, Zhang Heng can be said to be the first great mathematician in the history of Chinese dynasties to propose the calculation method of pi and devote himself to the numerical calculation.

After naming the cube "mass" and the sphere "hundred", Zhang Heng used these two concepts to apply mathematical methods to calculations in the field of astronomy.

If it weren't for the strange book "Suan Wang Lun" that was eventually lost due to the war in the Tang and Song Dynasties, then the strange book of counting compiled by Zhang Heng would probably have the same status as "Ling Xian" in the field of astronomy , to become the cornerstone material for the development of mathematics in the next millennium in China.

Now even if it is only Zhang Heng's fifth-generation grandson, as long as Zhang Ju's intelligence is not too bad, it is obvious that the other party's mathematics level will never be bad.

You must know that, unlike the knowledge that most ordinary people understand, when mechanical design work, especially mechanical design work involving energy conversion, it is not necessarily the designer's physics and chemistry that really play a decisive role. level.

For example, mathematicians have played a decisive and important role in the transformation process of the steam engine for more than 200 years after its invention.

Now with the help of the system, in fact, there are a lot of materials as long as Zhang Yan has read them, and with the help of the system, he can spend his reputation to exchange them from the system mall.

And if he can get the help of Zhang Ju and others, then Zhang Yan is sure that in the future, through a series of mathematics textbooks from elementary school to university, he will be trained as a person who can be used as the foundation of mathematics.

By that time, materials such as "Three Stages of Steam Engine Development and Evolution" and "Boiler Steam Pressure Control System" will also have a certain use in Zhang Yan's system mall.

Different from those ordinary science students, Zhang Yan actually took advantage of the school’s advantage of free downloading of papers on the Celesknowledge Network during his university days, and read a lot of messy and trivial knowledge.