However, after coming to Chang'an, Lu Jun and his group met Romans at the post station before they could find Chen Xi. Speaking of which, Rome now has residences in Chang'an, but some Romans still prefer stations because the post stations are coming and going, and there are big bosses from time to time.

Some Romans like to do business with local tyrants. On the one hand, the local tyrants have good things, and on the other hand, it is because those who can meet at the inn will not be salted fish, which is conducive to the Romans understanding the composition of this country.

The Romans didn't know how to point it, or just say that it was a trap like sociology. Anyway, the Romans went around and ordered sociology, and then relied on this subject that they didn't know how to point it to study the population composition, population size and economic composition of the Han Dynasty.

Although it is not very accurate, the Romans squatted at the post station to welcome and send off the trip and found some things. It is basically confirmed that the Han Dynasty population is composed of local ethnic groups, with the proportion of subject ethnic groups exceeding more than 90%. Other non-subject ethnic groups also have more or less blood ties with the subject ethnic groups in terms of root.

To put it simply, in the eyes of the Romans, the Han Dynasty was a very stable imperial structure. Even if it fell, it was at most a change of individuals, not a different species. The number of main ethnic groups was about 30 to 60 million according to the calculations of this Diocler.

Of course, since he did not personally go to the Central Plains, this number is a valuation, but he doesn't want to make trouble with this number, so after estimating this number, you can just compare the strength of Rome and the Han Dynasty. Such data will help him understand this powerful empire.

In fact, after calculating this number, Diocles was a little worried about the number of Roman citizens. Although he estimated the overall population of Rome, after all, the Romans only roughly counted the number of barbarians. In fact, the Romans didn't care much about how many. After so many years of strength, Rome has become arrogant.

However, in terms of the treatment enjoyed by Roman citizens and the ratio of population circulation, Diocher relied on half-baked sociology and pretty good numbers to estimate that the number of barbarians should be around 50 million, otherwise, it would not be possible to provide the nearly aristocratic life of six million citizens.

Before Diocler came to the Han Dynasty, he always felt that this method was extremely correct, oppressing the lowly barbarians, gathering millions of people to support six million citizens, making citizens almost like aristocratic existence, and even if necessary, they could become proprietors.

Give citizens time and energy to pursue everything they need, and give citizens enough honor and capital to show their love for the country when they need it.

It can be said that before coming to the Han Dynasty, Diocher really believed that Rome's clear class system and the favorable survival of citizens were extremely correct systems. However, when he saw that the population of the main ethnic group of the same bloodline exceeded 30 million, Diocher was really unreliable and never thought that there would be such an operation.

Although this is not easy to divide the system of classes, slaves, civilians, and citizens is a bit unpractical, but looking at the state of the Han Dynasty, I ask you, is it bad? It may be indeed inferior to the six million Roman citizens, but they are indeed exactly the same in promotion, which is very scary. The barbarians make trouble all day long, just because there is no channel for ascending?

In fact, if you think about it, you will know that they are not from the same race. The Romans are very determined and dare not let the other party climb up. If they are not from our race, their hearts will be different. This is not only the Central Plains, but also the Roman situation!

"I may need to find a professional to contact the Han Dynasty and learn how to make the main ethnic group reach tens of millions..." Diocler was very confused after reading what he made, but when he thought of the social welfare of tens of millions of citizens, this guy was a bit overwhelmed. This was really not easy to solve. Maybe Rome was destroyed in a few strokes.

So in the end, Diocler could only seal his research and speculation, waiting for the opportunity to open it again in the future. Forget it now, six million citizens are good, and no matter how many Rome is, it will be a little unaffordable.

No matter what, it is not a barbarian who can survive by eating dirt, but citizens who need to prepare their residence, allocate housing, arrange their water conservancy network, and allocate public facilities.

Occasionally, we need to recruit military service and strengthen training. Although it is not a waste, it is not a waste. Citizens can grow tall and strong, and they are tall and big. Do you really think they don’t have meat added!

All these are money. Citizens say they are equipped with their own weapons and equipment and war horses. But to be honest, such a citizen is also raised by the country. Do you really think that without a country, you can have a family?

How much does tens of millions of citizens have to invest? Diocler decisively gave up this nonsense idea. Six million citizens are good. They dare not increase the amount. No matter how much they have, they will either thin the benefits or the country cannot hold on. Both are dead and give up.

In this case where a lot of information can be collected and analysed, many of the Roman envoys have been staying at the post station and can still speak a few Chinese. Although they are not very familiar, they can barely communicate with each other while gesturing.

The Romans Lu Jun met in this wave were disgusted by Diocles' conclusions he came to. Speaking of which, the envoy sent by the Romans was of high quality. In terms of ability, there were economics card figures like Herodian. Although they were not top-notch, they were not bad either.

There are also experts like Arestonos, a world-breaking expert in force. Although he ran away after confirming the goodwill of the Han Dynasty during this period, he did follow him when he came.

There are also sons of the duke, senator, and in medicine, there are also figures like Galen, who are among the most popular in medical history. It can be said that the quality of this envoy may not be easy to throw away the top figures of this country and even if some countries are thrown away, they can completely destroy the top figures of this country.

However, this is the case with the Han Dynasty. There are also a lot of bugs in this era, because it does not seem like this group of people are very monsters.

Take Diocler as an ordinary mathematician. There is also Zhao Shuang in the Han Dynasty who can be included in history books and leave a trace in the mathematics community.

In the same era, I am afraid that I can only wait for the Diophantius engraved with mathematical problems on the tombstone to be born before I can deal with Zhao Shuang. As for Diocler and other comparisons, Zhao Shuang is weak, which is the only algebra founder of Diophantius.

But this is a real big shot. I really can't afford to mess with the series. Later generations of algebra came from this guy, and it can be considered a bug-level character.

Overall, the quality of this group of people is still very high, and many of them can help the Han Dynasty. Diocler, a mathematician, really helped the Han Dynasty, and the incident happened when Lu Jun and Zheng Hun pulled the steam engine.

Here we must first mention a strange thing. The science and technology tree in world history was very chaotic before the Industrial Revolution, and the Central Plains belonged to one of them. Before the Ming and Qing Dynasties, the Central Plains had already ordered electricity, geomagnetics, fuel, and natural gas, but they had never ordered steam engines...

Europe basically has no other pointing, and it has been placing steam engines. Since the earliest ancient Greece, this group of people have learned to use steam to cause trouble, such as opening the door of steam, like steam jets, in short, Europe has been placing steam engines.

Around the BC, Roman mathematician Hero pointed out a steam-turning ball, and used steam to push the rotating... toys...

Then Herro did not continue to study this thing, but his theory was complete at that time. However, Herro himself did not study it, but she began to study wind power and successfully created wind wheels, becoming the first equipment in history to use wind power to cause trouble, so that in Europe later, there were almost windmills everywhere.

This is roughly the case. In short, this person is very arrogant, and it only took a hundred years to die. Many of the things learned by Roman mathematicians were made by this person, so naturally they have a very impression of what he invented. Therefore, after talking about the steam engine, the Romans also intervened.

At that moment, Zheng Hun and Ma Jun were stunned. After all, the steam engine had basically not been used outside for a few times since they made it out. How did this person know?

Therefore, the two of them surrounded each other directly. In fact, they saw the other party’s big beard and a Hu-like face. Zheng Hun and Ma Jun couldn’t help but suspect that no one would steal something they hadn’t studied yet.

However, I didn't know if I didn't ask. When I asked, I was shocked. Rome actually created something similar a hundred years ago. Oh, it turned out to be a toy. Let me see what your toys look like.

If other countries in the world may have sealing and technical problems when doing steam transfer at this time, there will be no problems with these problems at all in the Han Dynasty. After all, the barely available world-earth energy-steam hybrid engine has been developed, and the airtightness experiment has been barely passed. It is difficult to make a big one, but just make a small one and take the scraps.

Zheng Hun and Ma Jun are both decisive figures, and they directly brought Diocher to the craftsmanship in the Han Dynasty. Now there are about half of the masters of the Han Dynasty. The remaining half should be building bridges. Well, it is the viaduct. Chen Xi is already crazy and Sun Qian is also crazy. There is nothing to say about building construction. If you don’t practice it, no matter how good you calculate, who knows, go ahead and build it!

Diocler is not a mechanic, but since Hero was a mathematician and part-time mechanic and inventor, Hero has learned some of his theory. I need to thank him for this. Rome has not yet fallen, so the clay tablets are very complete.
Chapter completed!