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Chapter 2442 Someone took that step

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    "Yes, Master, if you can, please give me a roll of maps that is accurate enough to cover the entire universe." Lu Xun thought for a while and said, "Let me remember it all in my heart and use it in my future life.  Go measure it and verify it. " Chen Xi couldn't help but sigh after hearing this. Should I say that he is worthy of Lu Xun? This kind of mentality and this ideal are really lofty, but Yu Nei, even in later generations, no one has truly owned the entire Yu Nei.  The accurate map, the so-called world map, is only the scope of the current human beings. Yunei, look up at the bright galaxy, that is Yunei.  "Okay, I will use the scale to draw you a map with accuracy and terrain." Chen Xi suppressed his desire for the starry sky and narrowed the map to the world. In this way, what Lu Xun wanted was not  It was so difficult, at best a bit troublesome, but there was still half a year before his wedding, so Chen Xi still had time.  What's more, after being mentioned like this by Lu Xun, Chen Xi also remembered that while he could still remember the relatively detailed world map, he should combine all the maps in advance to make an accurate and usable map as a reference.  "Thank you, teacher." Lu Xun said with joy. He really wanted to see how huge this world is.  "Well, I'm going to write a greeting note to General Huangfu first, and I'll take you there with me tomorrow." Seeing Lu Xun's expression, Chen Xi smiled and said, "Wait here first while I go write a greeting note and let you go with me tomorrow."  My old housekeeper sent it over." Lu Xun nodded, and Chen Xi went to the study first. When Chen Xi came back, the stone table was already filled with various snacks. Lu Xun sat aside with some restraint, while Cai Yan sat aside.  Sitting on the other side, Chen Ying was accompanying him.  "Well, it's rare." Chen Xi was a little surprised to see Cai Yan appear. To be honest, starting from the year before last, Cai Yan came to Chen Xi less and less. When the second lady had Yang Hu and Yang Hui  After Yu, Cai Yan basically stopped coming to Chen Xi.  "There are some questions I would like to ask." Cai Yan held the tea cup in his hand and said calmly and without any fluctuations, which could be regarded as an explanation to those who were not here.  "What's the problem?" Chen Xi asked in confusion. Generally, Cai Yan would solve problems by himself. In the past, if Cai Yan had any problems, he would seek answers from Chen Xi. Now, there is no need to do this.  "The Molinggan family brought a bunch of things and came to me to ask for an answer." Cai Yan said calmly and coldly.  "Ha, you actually still do this kind of thing?" Chen Xi said with a surprised look on his face. He had never heard that Cai Yan had a hobby of answering questions. It is a bit strange to collect things to answer questions.  Hearing this, Cai Yan naturally glanced at Chen Xi with his cold eyes. He had no other intention, but it still made Chen Xi a little embarrassed.  Fortunately, before Chen Xi could speak, Cai Yan had already opened his mouth to explain to Chen Xi, "It's not that I collected things and gave them answers, but that I will help others solve some academic problems. As for whether they are standard answers, I can only say  It's based on my knowledge base. " "" Chen Xi has nothing to say. Cai Yan does not seem to have any sectarian opinions. Just because of her status, it is difficult for anyone to study with her. However, generally speaking, as long as it is purely academic, Cai Yan  Yan seems to have an answer.  "What's the reason this time?" Chen Xi put aside Cai Yan's answer after a while and asked instead.  "The Moling Gan family was divided because of a problem. In order to prevent the family from being divided, Gan Fen, the head of the Gan family, sent the problem to me, hoping that I could give an answer." Cai Yan said with a little sleepiness.  Chen Xi couldn't help but feel a little strange when he saw the sleepy look on Cai Yan's face. Cai Yan still paid great attention to his appearance in front of others. This obvious sleepy look was simply unimaginable to Chen Xi. Is there something wrong with this?  ?  "It's so strange, why did I ask you for help?" Chen Xi asked puzzledly.  "Because I know the most academic knowledge at present, and compared to some people, I seem to be more leisurely." Cai Yan said unhurriedly.  Chen Xi scratched his cheek and didn't know what to say, but that's right. It's academic stuff on the surface. It is Cai Yan who stands at the top now. The key to the inner library of the library is hanging around Cai Yan's neck.  And Cai Yan itself is equivalent to a library.  It is said that any powerful man who marries a powerful man can transform into a noble family in three generations. After that, Cai Yan's large number of classics will be enough to build the entire family into a scholarly family.  "However, unfortunately, Cai Yan has no intention of getting married at all. The Cai family's reputation depends on Cai Yan alone. If Cai Yan doesn't mention marrying outside, other aristocratic families can't do anything even if they are interested.  "What's the problem?" Chen Xi scratched his cheek and asked.?Awkwardly asked, "Speaking of which, can't you solve it?" Cai Yan's own qualifications are very good, and he also has spiritual and quasi-spiritual talents. After being fed by Chen Xi's large number of classics, he is now really good at academics.  It is unusual. Normally, in the current social environment, unless it is a philosophical issue, it is impossible for Cai Yan to be stumped.  "The earth we are standing on is round, right?" Cai Yan said slowly.  "" Chen Xi's eyebrows twitched when he heard this, but he said nothing. However, Lu Xun was completely stunned and his mind was in chaos.  "Uh, is this what you asked, or" Chen Xi thought for a while and decided to think about what was going on before answering.  Although during the Spring and Autumn Period, some people in China and ancient Greece suggested that the earth under your feet was a ball, neither side proved it.  Later, probably during the Warring States Period, Gan De and Shi Shen in the Central Plains deduced that the earth was a ball from the formation of lunar eclipses. At the same time, Aristotle in ancient Greece also deduced that the earth was a ball based on this. However, both parties thought that they were mentally retarded.  , How can the earth be a ball!  So both sides just mentioned this speculation in their own classics, and then said nothing more. The only evidence was the eclipse. From this aspect, the people of the 2500th century were indeed very powerful.  Unusually, after all, both sides gave birth to a group of actual founders of civilization.  Later, it was Luo Xia Hong of the Western Han Dynasty who really proposed that the earth is a ball in the Central Plains, and he directly introduced the theory of Hun Tian. However, Luo Xia Hong could not really develop this theory. Although he proposed it, it was not recognized by the mainstream of society at that time.  . ????????? When we come down to Zhang Heng, it¡¯s scary. The armillary sphere directly explained many astronomical phenomena in the Earth-Moon system and the solar system at that time. Only then did the armillary theory truly begin to overwhelm the Gaitian theory.  However, Zhang Heng himself could not explain why he did not roll down if the earth was a ball. In addition, Zhang Heng's conditions at the time were unable to calculate the area and circumference of the ball. Therefore, although Huntian said that it explained a lot of things, it was  There is no way to completely kill Gai Tianshuo.  As for the current Three Kingdoms period, the Huntian theory has actually taken the advantage, but a big problem with the Huntian theory is that it cannot explain the problem of the ball, because although the Huntian theory is popular, there are basically no people who are really sure that there is a ball under their feet.  .  Now Cai Yan is asking, judging from this tone, someone should have firm evidence.  "The Gan family, the Gan family in Moling raised the question. Some of them moved targets on the sea to calculate the limit of the visible range and the circumference of the earth. They thought there was a ball under their feet!" Cai Yan was very helpless.  He said, and then took out a stack of calculation methods and conclusions from various verification results from his sleeve.  "What's the conclusion?" Chen Xi said with a headache. He had long known that there were some monsters in the Central Plains that were difficult to deal with. Well, we really encountered them this time.  In fact, this cannot be blamed on Chen Xi. When we were on land, it was difficult for the ancient people who were fixed in one place to come to the conclusion that the earth is a ball even if they had the accumulated knowledge of several generations. As a result, last year, Zhou Yu brought a group of astronomy and astrology experts to the conclusion that the earth is a ball.  People from , Feng Shui, and Kan Yu got on the boat and went south, and this group of people almost got into a fight on the boat because of the astrology one.  Needless to say, the Gan family was dissatisfied, the Chen family was unhappy, and the Wang family was also displeased. In the end, the matter was revealed, but when the three families returned home, they directly started the whole-family research mode, but the Gan family failed.  They spent the most money and chose the right method. It only took half a year to get the results. And then because of this result, the Gan family started fighting within themselves.  "The calculation of the circumference is based on the latest data calculated by Zhao Junqing. Gan Fen and the Moling Gan family took actual measurements at sea for two months, and finally determined that the earth under their feet is a ball, and the value will be larger the further south they go. According to their calculations  , the maximum circumference of the earth under your feet is 40,000 kilometers in the latest unit." Cai Yan handed Chen Xi the calculation paper sent by the Gan family.  Chen Xi was silent. The difference between this data and the data in his impression was actually very small. It should be said that this family is worthy of being engaged in this professionally.  Looking at the calculated data in his hand, Chen Xi was extremely impressed. Moreover, a large amount of actual measurement data was noted on it. In order to avoid mistakes, several actual measurements were even conducted at the same place. After excluding some unexpected data, the average was calculated.  There are several calculation methods, such as the shadows of different areas at the same time and height, the visual distance of the sea horizon, and even asking the immortal to use a light spell that is almost like a laser, and then the ship stays away from the sea and calculates the straight rays along the way.  As the height of the ship's scale mark moves away and rises, the last data taken is the last data.  Naturally, the accuracy of the data calculated in this way is terrifying. By the way, in order to complete this test, the Gan family has accumulated hundreds of years of experience.??Wealth has evaporated by one-third, the cost of buying ships, arranging manpower, buying accurate clocks, buying colorless crystals, etc.
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