However, after arriving in Chang'an, Lu Jun and his group met the Romans at the inn before they went to find Chen Xi. Speaking of which, Rome now has a residence in Chang'an, but some Romans still prefer the inn because the people from the inn come here. People come and go, and there will be big bosses from time to time. Some Romans liked to do business with local tycoons. On the one hand, the goods in their hands were good, and on the other hand, because nothing they could encounter at the inn was salted fish, which helped the Romans understand the composition of the country. . The Romans didn¡¯t know how to get it, or they could just say that sociology was a trap. Anyway, the Romans took sociology over and over again, and then relied on this subject of which they didn¡¯t know what they got to study the Han Dynasty. population composition, population size, and economic composition. Although it is not accurate, the Romans squatted at the post station to welcome and send them off, and they did research something. It is basically confirmed that the population of the Han Dynasty is all native ethnic groups, with the majority ethnic group accounting for more than 90%, and other non-main ethnic groups. , fundamentally speaking, they also have more or less blood relations with the main ethnic group. To put it simply, in the eyes of the Romans, the Han Dynasty was a very stable imperial structure. Even if it fell, it would only involve changing one person, not another species. According to the calculation of Diocles, the number of the main ethnic groups was about three. Ten million to sixty million. Of course, since he himself has not traveled to the Central Plains personally, this number is an estimate, but he does not want to make trouble with this number, so after estimating this number, he can just compare the strength of Rome and the Han Dynasty. Such data has Help him understand this powerful empire. In fact, after calculating this number, Diocles became a little worried about the number of citizens in Rome. Although the overall population of Rome was also estimated by him, after all, the Romans only roughly counted the number of barbarians. How many were actually there? The Romans actually didn't take it too seriously. After so many years of strength, Rome was already on top. But judging from the treatment enjoyed by Roman citizens and the rate of population circulation, Diocles relied on half-baked sociology and fairly good figures to estimate that the number of barbarians should be around 50 million. Otherwise, it would be impossible to supply 600 barbarians. Ten thousand citizens live a life almost aristocratic. Before Theocles came to the Han Dynasty, he always felt that this method was extremely correct. He oppressed the lower barbarians, gathered tens of millions of people to support six million citizens, and made the citizens almost aristocratic, even necessary. In this case, you can directly become a person who is out of work. Let citizens have the time and energy to pursue everything they need, and let citizens have enough honor and capital to show their love for the country when needed. It can be said that before coming to the Han Dynasty, Diocles really believed that Rome's clear class system and the system that gave citizens a generous life were extremely correct. However, after seeing the Han Dynasty, a main ethnic group of the same origin, With a population exceeding 30 million, Diocles was really stunned and had never thought of such an operation. Although it is difficult to distinguish between classes in this way, and the system of slaves, commoners, and citizens is somewhat impractical, but looking at the state of the Han Dynasty, and honestly asking, are they living a good life? Maybe they are not as good as the six million Roman citizens, but they are exactly the same in terms of promotion. This is very scary. Isn't it because the barbarians are making trouble all day long because there is no way to ascend? ??Actually, if you think about it, you will know that they are not of the same race. The Romans are too big-hearted and dare not just let each other climb up. If they are not of my race, their hearts will be different. This is not only the case in the Central Plains, but also in Rome! "I may need to find a professional to contact the Han Dynasty to learn how to increase the size of the main ethnic group to tens of millions" Diocles was very entangled after seeing what he had made, but when he thought of tens of millions The social welfare of citizens is a bit big. It is really not easy to solve. Maybe Rome will be destroyed in a few moments. So in the end, Diocles could only seal up his research and speculations, waiting for the opportunity to open them again in the future. Forget it now, six million citizens are pretty good, no matter how many more Rome has, it will be a bit unsustainable. get up. No matter what, they are not barbarians who can survive by eating dirt, but citizens who need to prepare their residences, allocate housing, arrange water conservancy networks, and allocate public facilities. Occasionally, it is necessary to recruit people for military service and strengthen training. Although it is free of charge, it is not just eating dirt. Citizens can grow tall and strong, tall and strong. Do you really think there is no meat added! ¡°These are all money. Citizens say they prepare their own weapons and equipment and war horses, but to be honest, such a citizen is raised by the state. Do you really think that you can have a family without a state? How much investment does it take to invest tens of millions of citizens? Diocles decisively gave up this nonsense idea. Six million citizens is not bad. He dare not increase it any more. Any more would either reduce welfare or the country will not be able to sustain it, both. death?Give up give up. In this situation where a lot of intelligence can be collected and a lot of important information can be obtained after analysis, several members of the Roman mission have been staying at the inn, and they can now speak a few words in Chinese, although they cannot. They are quite familiar, but they can barely communicate with each other through gestures. The Roman that Lu Jun met this time was Diocles, who was disgusted by the conclusions he came to. Speaking of which, the quality of the envoy sent by the Romans was quite high. In terms of ability, it had the economics card of Herodian. The characters, although not top-notch, are not bad either. There are also world-breaking experts like Aristonus in terms of force. Although he ran away after confirming the goodwill of the Han Dynasty during this period, he did follow him when he came. In terms of status, there are also the son of a duke, a senator of the Senate, and in medicine, there is also Galen, a figure that can be regarded as one of the few in the history of medicine. It can be said that the quality of this mission may even be thrown into some countries and completely destroy this country. Top guy. However, this is the case when it comes to the Han Dynasty. The Han Dynasty is also full of bugs in this era, because it does not appear that these people are very monsters. ¡° Take Diocles, for example, he was an ordinary mathematician, but there was also Zhao Shuang in the Han Dynasty, who could go into history books and leave a mark in the world of mathematics. At the same time, I am afraid that I will have to wait a few more years for Diophantus with mathematical problems engraved on the tombstone to be born before he can deal with Zhao Shuang. As for Diocles, Zhao Shuang is weak compared to Diophantus. This kind of algebra is something only the founder of Algebra has. ??????????????????????????? But this kind of person is a real boss, he really can¡¯t afford to offend the series, and the future generations come from this guy, and he can be regarded as a bug-level character. Generally speaking, the quality of this group of people is still very high, and many of them can help the Han Dynasty. Diocles, a mathematician, really helped the Han Dynasty this time, and it happened on the mainland. When Jun and Zheng Hun were working on the steam engine. Here I must first mention something strange. The science and technology tree of world history was very messy before the industrial revolution, and the Central Plains was one of the weird ones. The Central Plains already had electricity, geomagnetism, etc. before the Ming and Qing Dynasties. Fuel, natural gas, but they have never lit up a steam engine In Europe, they have basically never lit up anything else. They have been lighting up steam engines. Starting from the earliest ancient Greece, this group of people have learned to use steam to do things, like opening doors with steam. What kind of steam injection? In short, Europe has been burning steam engines. In BC, the Roman mathematician Hero invented the steam ball, which was actually a rotating toy that was propelled by steam Then Hero did not continue to study this thing, but his theory was complete at that time. However, Hero himself did not continue his research, and instead began to study wind power, and successfully manufactured a wind wheel, which became the first trouble-making device in history that used wind power. After that, windmills were almost everywhere in Europe. . This is roughly the situation. In short, this man is very cool, and he has only been dead for a hundred years. Many of the things that Roman mathematicians learned were invented by this man. Naturally, he is very impressed by the things he invented. , so after talking about steam engines, the Romans also started talking about it. At that moment, Zheng Hun and Ma Jun were stunned. After all, the steam engine had hardly been used outside since they made it. How did this person know about it? So the two men gathered around him. They saw that the other person had a beard and a beard-like face. Zheng Hun and Ma Jun couldn't help but wonder if someone was stealing something they hadn't finished researching. . "However, you won't know if you don't ask. When you ask, you will be shocked. Rome actually made something similar a hundred years ago. Oh, it turns out to be a toy. Let me see what your toy looks like." If other countries in the world may still have problems with sealing and technology when engaging in steam-driven ball rolling at this time, these problems do not exist here at all in the Han Dynasty. After all, the barely usable Tiandi Jingqi-steam hybrid engine has already After it was built, the air tightness test barely passed. It was difficult to make a big one, but to make a small one, just use scraps. Zheng Hun and Ma Jun were both vigorous and resolute people, and they took Theocles directly to the Han Dynasty's craftsmanship supervisor. About half of the Han Dynasty's master craftsmen were gathered here, and the remaining half should be building bridges. Well, it's the viaduct. Chen Xi has gone crazy, and Sun Qian has gone crazy. There is nothing to say about the construction. Without practice, no matter how good the calculation is, who knows, go ahead, start the construction! Diocles was not a mechanic, but because Hero was a mathematician, part-time mechanic and inventor, he had learned some of Hero's theories. Having said that, I need to thank Rome for not falling yet. Therefore, the clay tablets are very complete. The craftsmen of the Han Dynasty were also very complete, and naturally they were very fast. In just a few days, the Han Dynasty made a steam ball. Then Zheng Hun and Ma Jun watched.The connection method of the steam-rotating ball comes up with a new transmission method.