"So little?" Shu Han was slightly surprised by this number, according to what Dati said, the population of the entire Black Iron City is about 200,000, so many people, the average life expectancy is only about forty-five years old, except for those upper-class families, and the slaves are even lower, basically will not live to the age of thirty, such an average age, basically shows that there are almost no old people in the entire Black Iron City.

And, the replacement rate of the population of the whole city is very fast, in modern society, aging is the standard configuration of developed countries, the main reason is that the welfare is good, the medical conditions are high, so people's life expectancy is generally longer, the speed of people replacement will be relatively slow, and the renewal speed of the Black Iron City, even faster than those brothers in Asia, Africa and Latin America.

With such a fast replacement speed, it stands to reason that the number of Skywalkers should not be so small, after all, according to Dati's data, only one out of every two thousand people in Black Iron City can become a Skywalker, and behind this number, there are other people who are rapidly changing, because Skywalkers must have a longer lifespan than ordinary people, and they enjoy the highest treatment in Black Iron City, whether it is medical care or food, they are top-notch, as long as there are no accidents and live to be sixty years old, it is a very simple thing.

At such a rate, it is not one out of every two thousand people, but it is possible to have one out of every four thousand people, or even one out of every six thousand people, this number makes Shu Han can't help but smack his tongue, the so-called Skywalker is even more rare than the giant panda in the previous life.

"Less? Manager, have you ever seen those Skywalkers, they call for wind and rain, they are overwhelming, they can do almost anything, they can shrink like mesons, they can enlarge like mountains, they can't avoid boiling hot in the fire, they swim in the water for a day and a night, they are fairy-like figures, a hundred is not too little? Dati said with some dissatisfaction.

"You've seen it?" Shu Han was very skeptical of Dati's description, if these Skywalkers were really so powerful, why were humans still trapped in this one-third of an acre, shouldn't they have clarified Yuyu a long time ago, cleared Liuhe, regained dominance of the earth, and trampled all species under their feet?

"I haven't seen it." Dati is undoubtedly a huge merit in terms of honesty, but he immediately said unconvinced: "But although I haven't seen it, but word of mouth says that Skywalker does have abilities that are different from ordinary people, otherwise you would be stupid when those big families are stupid?" Trying so hard to rob those Skywalkers to be their own children? It definitely means that they are different from ordinary people. “

"I agree with this, but I don't believe that the enemy is wiped out in a wave of my hand." Shu Han didn't bother much with Dati, he was not at the same level as these people at all, just talk about a few words, if you really want to be more serious, it won't be interesting at all.

"Well, then you say, what are they going out for this time?" Shu Han hurriedly changed the topic, lest Dati drill the tip of the horns, for these soldiers, always admit death, and not only admit themselves, when the people around them don't recognize it, they have to teach you a lesson, force you to admit it, although this does not necessarily meet the characteristics of all soldiers, but Dati is obviously such a person, he doesn't want to listen to people in his ears.

"How do I know? It's nothing more than exploring, rescuing, gathering supplies, information, and the like. Dati shook his head and said, he has only been a squad and belongs to the standing army, but he has never entered the special forces, but with this and that, it is expected that the work should be similar, the only difference should be in the difficulty.

Shu Han looked at the convoy that was gradually moving away, and was so envious in his heart, thinking that it would be so cool if he had a car, just during this time he was preparing for a driver's license test, there was no driver's license test in this last day, if only he could use it to practice, but unfortunately, this truck is in Black Iron City, which belongs to absolute military supplies, only in the hands of special mobile forces and big families, and a senior wage earner like him is not worthy of owning.

After that, the two of them didn't talk about anything more, and the scenery along the way gradually became boring, and the large fields stretched to the end of the sight, if you occasionally look at it, it's okay, but after watching it in a carriage for two or three hours in a row, Shu Han also has to decline, fortunately, the scope that the entire Black Iron City can control is not large, and the original old city plus the Egret District, after three hours of travel, the thick city wall in the distance finally appeared in front of Shu Han's eyes.

In the previous life, Shu Han once traveled to Nanjing, for the Nanjing City Wall, has a deep memory, that is the most well-preserved city wall in China today, and the Xi'an City Wall, are the treasures of the ancient Chinese defense system, when Shu Han saw the Nanjing City Wall for the first time, the whole person was shocked speechless.

Originally, he thought that the city wall was just a wall, but the Nanjing city wall subverted Shu Han's imagination, it was a tall city wall of more than 20 meters, on which three carriages could travel synchronously, spacious enough to arrange F1 races, and at the same time there were various rooms and storage rooms on it, and the entire city wall was about 17 meters thick.

And now, the city wall of the Black Iron City is more exaggerated than the city wall of Nanjing, from a distance, the width of the east and west is about three kilometers, very eye-catching, and when you get close to the surrounding market towns, it is almost impossible for you not to notice this magnificent city wall, Shu Han roughly speculates that this city wall has a height of more than 30 meters, and the entire city wall is wrapped with iron sheets, some key positions, and even built with iron blocks, giving people a very domineering sense of oppression.

After Shu Han and the others took out the customs clearance card, passed the checkpoint, and entered the suburbs, the further they went, the more they were amazed by this city wall, you had to look up to see the top of the city wall, Shu Han felt that when the Black Iron City was at noon, the sun was hanging in the middle, looking up, the city wall just cut the sun in half, half of the light was under the shade of the city wall, and the rest of the sunlight fell down, and the huge shadow made the city wall more majestic.

"How did you build this wall?" Shu Han asked, with today's human technology, to build such a huge and magnificent city wall, in Shu Han's opinion, it can be described as incredible, Dati on the side said: "I heard from the older generation of people, this city wall was built a long, long time ago, how to build it, maybe you have to ask engineering students, or teachers." “

For Dati, the wall had been around since the moment he was born, and he had never heard of anyone curious about its origins, a story from a long, long time ago, so long that there was not even a story, just a bunch of legends.

Shu Han looked at the city wall, thoughtful, Dati drove his horse through the suburbs of the large slums, which were originally farmland, but with the development of the Black Iron City, the population became more and more, and the city gradually began to crowd, so they began to immigrate, and one by one the small market towns walked within 30 square kilometers of the Black Iron City, close to the Black Iron City, this market town is the oldest settlement for you, so it is also the most developed.

By this time, the crowds began to gather again, and the town was full of people, and on both sides of the street were vendors who were shouting and selling things, all kinds of things, such as swords, guns, swords, and halberds, and some furs, spices, and some strange things, a piece of cement, a piece of broken glass, and a seller of flowers and pork.

In the crowd, people's expressions are much better than those farmers in the farmland, the people here are obviously much more energetic, at least they are wearing clean clothes, and their faces are showing such vitality, this lively and peaceful feeling makes Shu Han like it very much.