Whether it is astronomy, geography, or climate, there is one thing that cannot be avoided in the end: mathematics.

If there is any secret book in the real world that can make you invincible if you learn it, it is mathematics. Once you learn this thing, you can really conquer the world with a sword. The problem is that the secret book of this thing is posted everywhere. The masters of mathematics I wish I could spread my knowledge crazily in the world in the hope that someone who comes after me will join my sect. I have absolutely no intention of cherishing it.

But most of the time, people who get the secret book just take a look and find ways to cope with it. Those who can get started can't see the end. Most of them switch to finance to make some money. Those who can really get to the end with the secret book. Each era is numbered.

Of course, this is for normal people. For those who really need to study certain subjects, mathematics is a blind corner that cannot be circumvented. The Gan family and the Shi family can calculate the range of gravity acceleration by using a vacuum pendulum, and use the data to deduce it. Puller's three laws are actually not weak in terms of mathematics alone.

At least compared to the average level of this era, it already belongs to the level that stands at the top of the era, and those above it are basically math guys who have been in the history books.

However, with such a level of mathematics, when Chen Xi said it was a mathematical calculation, his face turned green. It was not that the Gan and Shi families were not good at it, but that this thing was too difficult to calculate. You must know that future generations will calculate this thing. Taking supercomputing into consideration, the Gan and Shi families are now at most aware of precession, nutation, and pole shift, and want to rely on existing data for accurate calculations and predictions...

"Well, lend me five Zhao brothers and we can figure it out next year." After Gan Bao's face turned green for a while, he said with a bit of depression.

"Is that an exaggeration?" Li You frowned and looked at Gan Bao and Shi Tao. He actually didn't understand what Chen Xi was talking to these two people at all. At most, he got some idea of ​​what precession was by asking his own son. As for the other stuff, that's what it is.

But again, Li You still respects the Gan and Shi families. After all, these two families don't cause trouble. They are so exhausted that they have no money to trick others into getting some celestial induction and then get some profit and continue to do their own work. That's enough. This is an extremely reliable family among the last family.

What's more, if the celestial calendar is better and the food is increased by 5% to 10%, there will be countless people alive, so Li You is still willing to give a certain amount of respect to this kind of family that is really doing things.

"All five are conservative. We have looked through the records of ancient times. We suspect that this thing has a pattern, but the full picture of this pattern cannot be seen in the human life cycle." Shi Tao said very tiredly, This is not a joke, but a judgment they made after comparing the declination angles of the star palaces for thousands of years.

Chen Xi couldn't help but laugh when he heard this. Precession actually led to a lot of interesting things. The cycle Shi Tao mentioned, Chen Xi estimated, is that the celestial sphere moves around the ecliptic pole. This cycle lasts for more than 20,000 years. As for more realistic things, Well, it's probably because the vernal equinox has moved westward, so that the star chart's displacement has been accumulating, and it basically has to be changed every fifty years.

If the Gan and Shi families were benchmarking against the star charts between Shang and Zhou dynasties, and after confirming that there were no problems with the star charts, they should have realized that the coordinate system itself based on the concept of the equator was also changing, and this change was the manifestation of precession.

"It's difficult to calculate?" Li You looked at Chen Xi and asked. If he didn't know the math questions, he asked Chen Xi directly. This was the experience Li You accumulated.

"Yes, with the current incomplete data, it is quite difficult to calculate this, and the two family heads should be somewhat suspicious of the notes left by their ancestors." Chen Xi looked at Gan Bao and Shi Tao and said with a smile. , the two of them did not deny it and nodded.

The problem lies here. When the overall image cannot be completely observed, mathematical calculations require at least some accurate original data. But what can I say about the original data obtained by the Gan family and the Shi family? It is said that I can't trust my ancestors at all, but I can't judge which ones are usable and which ones are not. In this case, it is better to directly test them.

"Then let's do the actual test. I can provide funds and let the Gan and Shi families borrow the Xugong River for a period of time every year." Chen Xi thought for a while and said.

It was impossible for Zhao Shuang to borrow it. It was Sun Qian's personal computer, and Guo Kai was not in the Department of Mathematics at all. Unless the Gan and Shi families had concealed the picture and Guo Kai directly verified the truth or falsehood, Guo Kai would actually be in this aspect. It makes no sense, so the only one who can use it is Xu Yue.

Li You gave Chen Xi a hard look. Xu Yue was his best tool!

"This requires continuous investment, and I'm afraid it won't be effective in a short time." Although it is here to defraud funds, Gan Bao still has to say the ugly words first.

"It's okay. This kind of thing itself is built bit by bit. Just remember to keep all the data and information in detail." Chen Xi said calmly. This thing is very important and will determine whether future research can be done. Keep it up,

"We have also considered this aspect." Shi Tao nodded and said, "We have communicated with the Yuan family. The Yuan family is implementing a very strange management method. We here feel that it has some reference significance, so I’m also going to promote it.”

"What management method?" Chen Xi first took out the special paper made by the special papermaking department and nurtured by Zhao Yun, wrote the corresponding items on it, and then took out the seal of Ziye Township Marquis to stamp it, and then stamped his own private seal, the spare seal of Chang'an Money House, and added the number, and handed it to Shi Tao and asked.

Large-value bills are still made by Chen Xi himself. After all, not many bills can be made in a year, and normally no one will use such a large amount, so each bill is stamped and signed by Chen Xi himself.

"It is said that a new civil official who joined the Yuan family suggested that secretaries be arranged in various local villages to record what happened every day. The quantity is not required, just a casual note every day is enough, and the quality is not required, but for outsiders, travelers, and special events, they must be recorded, even a sentence is fine." Shi Tao thought for a while and said, this was said by the brother who ran back from the Yuan family.

Chen Xi was silent for a while after hearing this. Who asked this to be done? He thought about it for a while and understood that this thing was the work of Cyprian.

In history, after European Catholicism absorbed Cyprian, it was formalized. Many rules were made by Cyprian. Chen Xi was not sure what the original reason was for requiring priests in churches around the country to write diaries, but this operation solved many problems.

Education, learning, inheritance and so on are accumulated little by little. Then, when the number of churches and priests increases, it is easier to manage such a thing. After all, if a major event happens, if you don’t record it, the surrounding churches will also record it. When you check and compare it, you will naturally know who is messing around.

Of course, if you have the ability to shut up a few churches around you, it is difficult to shut up all the churches. After all, the more you shut up, the more people will know that you are shutting up, and naturally someone will record it.

This is also why after the third century, Europe did not have an orthodox historian for a long time, but there were still enough local historical materials for reference. To put it bluntly, these priests recorded what happened in their own area in a running account. Although most of them were trivial matters, and did not involve local major events, they only mentioned a few sentences at most, but there were many churches, and there were always some around the involved events.

To be honest, Chen Xi did not quite understand why Cyprian asked these priests to write diaries. It was not realistic to say that they could see so far in the third century, but this matter was undoubtedly a brilliant move.

It was just not suitable for the Central Plains. The Central Plains had always been an official history, and would not allow others to mess around. Even if they wrote diaries, some things could not be written. This is why the reliable history of this place in China is very complete, but the details of the lives of ancient people are missing.

On the contrary, because of Cyprian's trick, many priests in Europe had nothing to write in their diaries today, so they just wrote about the situation of the people around them. So they would mention what the poor people in the Middle Ages ate, how they were made, how much wood residue and bran were mixed in, etc. Anyway, it was required by the superiors, and they couldn't resist the requirements of the superiors, so they just slacked off and made do. Today, here is a set of baguette making tutorials that can kill people, blah blah.

These things were undoubtedly perfunctory for the priests who recorded them at the time. These trivial matters, these things that didn't know what the meaning was, were just written in anyway, but hundreds of years later, these things became important materials for studying the real situation of the year.

This kind of material is actually rare in the Central Plains. Since the First Emperor, the perspective of all dynasties has been on how the rulers maintain their rule, and there is actually little attention to the ruled. The recorded information is also mainly on the rise and fall of the country, and rarely focuses on the ruled individuals. At most, some records of individuals can be seen in private letters.

However, the number of such private letters is very rare compared to the huge number of individuals under rule, so that the descendants of the Central Plains can clearly reproduce the prosperity of their own heyday, but it is difficult to construct the life of the people of the same era from the details.

What they eat, what they play, how they entertain, these ordinary people's things, before the novel was formed, were basically a desert.

That's right, the Ming and Qing novels, which are the most despised and regarded as the lowest nine in literary history, finally constructed a living Ming and Qing real bottom ecological reality, allowing people to clearly understand how the people of that era lived.

Even if it is not historical material, it is at least a reference, so that most people in later generations know how ordinary people lived in the Ming and Qing dynasties when they want to understand it.

As for going further back, it belongs to a very professional field. The information of big figures is very detailed, but the information of ordinary people is too little, so little that you can only find it one by one by looking through the history books.

Cyprian's method seems to be just for the convenience of management, but if you think about it carefully, you will realize that these materials passed down like running accounts represent the lives of many ordinary people.

Every word of the historical materials of great figures needs to be carefully considered, but the diary of small figures can be filled in casually, even if it is perfunctory, what is left is the truth of the parties involved.

"This plan is quite good." Zhuge Liang said with a serious tone after listening to Shi Tao's words.

"Oh, what do you mean?" Chen Xi asked with some curiosity.

"Let the noble families in Central Asia also write and submit one every year." Zhuge Liang said with a smile.

"Actually, they were asked to write this, but they haven't taken shape yet, and the requirements are not strict. In fact, the task of making internal history is to collect this diary, compare the records, and then find the wrong places in it, and conduct Accountability." Chen Xi said casually, "When Emperor Zhou still had authority, these were also implemented in the Central Plains, but only for the princes. "

"Oh oh oh, no wonder it looks so familiar to me." Gan Bao reacted instantly when he heard this. He said why it looked so familiar because his ancestors had already played with it.

"It looks familiar because our ancestors have played with it before, but it doesn't react because the First Emperor burned all the diaries of other families." Fazheng said quietly. He also reacted and quickly understood what Chen Xi meant when he said this. The reason why I didn't take it down is that the Central Plains is not suitable for this kind of gameplay.

"However, the Yuan family is suitable for this kind of gameplay. It can be regarded as mutual restraint and strengthened management." Chen Xi turned a blind eye to Fazheng's eyes. Even if the Central Plains side played this way, it would be in vain when they finally unified. This approach requires another person. It is impossible for Zhongyuan to have another team, and Chen Xi will not allow it, so he can only wait and see.

"Forget it, let's not mention this. Everyone has their own way of playing. Speaking of which, the court meeting is coming soon this year. Who will the Yuan family send?" Chen Xi didn't want to get entangled in this matter, so he asked naturally.

"I don't know. We haven't had in-depth exchanges with the Yuan family yet. All this news was brought back by my brother." Shi Tao shook his head and said, "But if there is a meeting of the great dynasty, even if there is a personal grudge, Duke Zhong Guo can't come. There has to be a heavyweight, no matter what, the princess must come."

Yuan Tan conferred the title of Zhong Guogong, but the current titles of the Han Dynasty are basically clearly divided. According to the internal and external Kyushu, they are divided into two sets. The highest internal title is the prince, while the outer title is not promoted directly, but is given to the feudal state. With a full set of legislative power and military and political power, it can be regarded as a complete princely state, and the Duke of the country is directly transferred to the princely prince. Therefore, it is generally assumed that Wen is the princess and Stina is the concubine.

As for the other women in Yuan Tan's inner courtyard, none of them have official titles, which means they have no status. They can only be said to be maids with a certain status.

"If I remember correctly, Princess Zhong just gave birth to a child. The banquet has not been held yet. The canonization edict is ready, but the Yuan family has to wait for five years." Zhuge Liang frowned and said after hearing this.

Yuan Tan will definitely not come to the Great Court Meeting, and Wen Shi has just given birth to a child, so it is unlikely that he will come. We can't let his concubine Stina come over. It's not impossible. Stina's identity and strength are there. No one can say anything. The question is how brave the Yuan family must be to let Stina come alone.

"Of the three members of the Yuan family, the remaining two have also fallen ill this year." Fazheng added, which means that the Yuan family must send people to Chang'an to attend the court meeting. After Yuan Da passed away, Yuan followed the two brothers. His health is not in good shape either. After all, his fate is approaching, and there are only a few who are as strong as Zhao Qi.

"It should be impossible for Zhongda. Xu Ziyuan went to Rome. In this case, it will be Xun Youruo who comes?" Chen Xi thought for a while and said.

After all, it is the great court meeting at the beginning of the eleventh year of Yuanfeng. No matter how many things happen to the major families, they will come to participate. The development of the past ten years has made the major families clearly realize that it is better to rely on themselves than to hold on to others, and Chen Xi Her thighs are really thick and powerful.

Therefore, all major aristocratic families will not miss the great court meeting at the beginning of next year. Those who come will be either the head of the family or the person in charge who can make decisions with a single word, and given the current situation of the Yuan family.

"Well, I guess so. I just happened to be allowed to meet Xun Youruo." Fazheng raised his eyebrows when he heard this. Fazheng had met everyone in the Xun family, but Xun Chen was the only one who couldn't sit down and talk. Fazheng is also interested in meeting this guy who claims to be able to analyze his opponent's thinking.

"Maybe we will bring Cyprian." Chen Xi said with a smile. To be honest, he wanted to meet Cyprian. After all, in terms of his influence on world history, even Zhuge Liang is far away from Cyprian. There is also a certain distance, and in terms of ability, Cyprian is also worthy of being a heavenly being.

In addition, Sima Yi also wrote to Chen Xi complaining about Cyprian, and Chen Xi really wanted to meet this guy who stood at the top of countless wise men in this era.

"Are you very interested in that guy?" Fazheng felt a slight difference in Chen Xi's tone, "That guy is very powerful?"

"It's very powerful. If you really want to say it, it can be regarded as the appearance of a heavenly being." Chen Xi thought for a while and gave a positive answer.

"It's rare for you to speak so highly of him, I kind of want to know more about him." Li You glanced at Zhuge Liang, and then said with a hint of disdain.

"I'm not joking this time, he is indeed a man of heaven." Chen Xi saw Li You's expression and said seriously, "At least in a certain aspect, even Kong Ming would find it difficult to surpass him. The true pride of the times, the man of heaven." As a person, I just don’t know if it will come at the end of the year.”

"Sneeze!" Cyprian rubbed his nose, and then raised his issue in the Senate, "Let's put aside the turmoil caused by the lack of food. This level of turmoil is nothing at all. The most important thing at the moment is to deal with Odin in Northern Europe as soon as possible, otherwise when the local unrest expands and Odin takes advantage of the chaos to go south, the overthrow of Rome is imminent."

I'm probably really useless. I obviously want to update more, but I just can't get up.

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