Of course, Liu Jun didn't want to come hard, but first, his mother died to protect Shu Han, which made him dare not mess around, and the second point is that the entire orphanage has been completely controlled by Shu Han, and moving here is moving his mother's foundation, where does he dare, and the other point is that for more than a month, Qin Xiao has been in contact with the old scientists of his grandfather's generation, giving gifts, condolences, etc.

Qin Xiao didn't bother to do these things, he wanted to survive on his own, not on these remnants from his grandfather, but after Shu Han's persuasion, Qin Xiao changed his strategy, and for the past month, he has not been in the orphanage, but has been restoring relations with people he can know in the city, or even only heard of, and these old people, some of the children are not around, or have been dead for a long time, it is naturally happy to have such a well-behaved elder to accompany them.

So during this period of time, Qin Xiao has established contact with some high-level intellectuals at the upper level, although these people have no power in the army, but they have a considerable voice in the entire government agency, after all, the analysis of those monsters now relies on these scientists to complete, and today's human beings have no way to kill those monsters, ordinary bullets can't kill them at all, and scientists are the key to solving the problem, so now scientists are in Black Iron City, It's not that the status in human society is very high, and Liu Jun naturally can't do this kind of thing in the face of the world's disapproval, so although he knows that there may be Qin Xiao's shadow here, he doesn't dare to move.

In the end, he could only choose to negotiate with Shu Han and re-give the information and information to Shu Han, through this information, Shu Han roughly understood that the collapse of this world was seventeen years ago, that is, eighteen years after his own era, and now Hai'an City has become a devil's lair, and there should be very few humans living there.

And for the changes in this world, there is a more detailed understanding, everything began with a meteorite shower, that meteorite rain covered the entire earth, and also caused a sensation, after all, such a scale of meteor showers, enough for everyone on the earth to be able to see, that day even appeared on Weibo hot search.

And scientists at that time did not pay attention to this, after all, these meteors fell to the ground when they were very small, almost no impact on human life, but everything started after this meteor shower, at the beginning it was just some domestic pet dogs, pet cats hurt people more and more, and then people found that the speed of plant growth became faster and faster.

Among them, there is some good news, such as some desertified areas suddenly began to grow plants, and some places are farmland harvests, grain production doubled, etc., people at that time did not feel abnormal, but soon, the earth's temperature began to change drastically, obviously in November, but the weather is cold, just a few days, the temperature plummeted by more than ten degrees, coastal cities such as Hai'an City, itself can maintain a temperature of more than 20 degrees in autumn, but in a few days, It was already three or four degrees Celsius.

Overnight, the entire Hai'an city changed from autumn clothes to winter clothes, and then the sea began to retreat, so the Arctic and Antarctic ice began to expand in a large area, all the time, the ice and snow in the Arctic and Antarctic are thawing, the greenhouse effect makes people very worried that the earth will eventually become a water ball, and now, although the sudden drop in temperature makes people's lives more difficult, but the retreat of the sea water has made hundreds of thousands of square kilometers of land appear on the earth out of thin air.

However, this joy did not last long, and soon the formation of these large areas of icebergs directly led to the salt content of the seawater obviously began to exceed the standard, a large number of aquatic animals died, and anaerobic organisms multiplied to form red algae, which in turn caused the oxygen content in the seawater to drop again, and at the same time the oxygen standard began to decline, and the whole earth began to change significantly, and many people began to lack oxygen, and then died.

And in this process, the development of animals is beyond everyone's expectations, these animals have completed the evolution at a speed that humans can not imagine, the pet dogs that were originally specially bred at this time, at this time there are about two people in size, even if the machine gun is for them, there is no harm, only with cannonballs, they can be killed, the world began to gradually become chaotic, and at this time, the appearance of the monster completely made human beings lose control of the world.

These monsters are comparable to nuclear bombs made by nature, the appearance of each monster makes humans feel terrifying, and now Black Iron City can still get in touch with the outside world through radio, through radio, he already knows that there are more than six or so monsters in the Central Plains today, as soon as these monsters appear, they will destroy the city made by humans into ruins, tens of millions of people die directly, and others are displaced, these scenes, Shu Han has only heard of them in mythological stories before, after all, in his time, The monsters have been hidden in their own environment and are not in people's sight at all.

And in this era, human beings are obviously very miserable, and after that, people scattered and fled, and began to flee continuously until now, Black Iron City has established a base of its own near here, and those demonic beasts have also stayed away from the former areas and began to wreak havoc in other places, but no one can know the news of those places, anyway, Liu Jun doesn't know, as for the higher levels to know or not, it's not something that Liu Jun can know.

Through these news, at least Shu Han understood the changes in this world from the macro situation, as for Hai'an City itself, this huge international city after the disaster, people are mainly divided into two factions, one group thinks that they should flee from the city and go to the suburbs to escape, because the city is too populated, and close to the coast, a few years ago, countless strange things were born in the ocean, these things launched an attack on the nearby coastal cities, each of which was hit hard.

And there are some people who think that they should stay, Hai'an City as an international city, there are a large number of scientific research institutes and institutions and instruments, these things are not easy to move away, in addition to the city has a better living environment, can make people more conducive to building defense facilities, etc., in the end, the two factions made their own choices, of which Black Iron City is the group of people who left.

In addition to these two groups of people, there is another trend of thought that is slowly fermenting among today's human beings, that is, Skywalker, the so-called mutant people, the contradiction between superpowers and normal humans, these people with special abilities feel that they are a species higher than humans, and those ordinary people think that these people are alienated humans, they have become monsters, no different from those monsters, and even advocate the slaughter of mutants among these humans to ensure the safety of human beings.

The relationship between the two sides is undoubtedly very tense and intense, and fortunately, Shu Han did not reveal his identity at the beginning, otherwise I am afraid that Black Iron City will not be able to stay at this time, and through Liu Jun's intelligence, Shu Han has also learned more about the outside world, and now Black Iron City is urgently building a city wall to ensure the safety of Black Iron City.

And in this city wall, it is said that there are new substances developed by scientists, which can ensure that ordinary animals do not dare to approach the city at all, which makes Shu Han very curious, he has seen this wall in later generations, it looks very tall, Shu Han did not notice any difference, if there is a strange place, that is, almost all cities have built such a wall, their style is strange but very high, at that time Shu Han still wondered, how can such a wall be built in every place, But other than that, Shu Han didn't think much about it.

At this time, when the end of the world had just begun, this wall had just begun to be built, but he heard that there were other secrets in this wall, and at this time he couldn't help but think of the walls that those cities had at the beginning, maybe these walls really have a magical place, otherwise why all cities have this wall.

No, it shouldn't be thought of that way, but where did all the cities that didn't have this wall go? This is the crux of the matter, obviously, this wall is indeed different from what I originally thought, those cities without this wall, all of them have been destroyed in this wave of chaos, so the cities that will survive in later generations will have such a wall, and even in many cities, some religions have been built around this wall, and many people say that they are the last refuge given by God to mankind and so on.

At that time, Shu Han thought that this was obviously false, and if God really gave human beings shelter, then why should human beings suffer such a disaster? He didn't understand, and from now on, it didn't matter if this wall was made by God or not, at least he was really a little unusual.

For this aspect of the question, Shu Han naturally could not get the answer from Liu Jun, he is a martial artist, how can he know the secret, in this regard, Shu Han set his sights on Zhao Quan and Qin Xiao, one knows a lot of scientists, and the other has recently established a spy network through those adopted orphans in the city.

After these children are adopted, most of them live in the inner city, after all, only the parents in the inner city can provide a comfortable home for these children in addition to their own lives, so the family conditions of these parents are not bad, in this case, this is a natural network.

And these children are all grateful to Shu Han, after all, if Shu Han did not help them, they would continue to stay in the orphanage, and live a lifetime without hope, so in this matter, they are also very willing to help the orphanage to do this, so with the help of Qin Xiao and Zhao Quan, Shu Han quickly learned the truth of this matter, it turned out that in this wall, not only the industrial raw materials that Shu Han thought, but also put a whole meteorite.

That is, the amethysts found by Shu Han in the later generations, these scientists studied it after getting a piece of amethyst, and found that it contained extremely powerful power, but this power was very rough and could not be directly used by people, so scientists did not find a way to directly use them, but they deduced that the changes in this world may be related to the appearance of these amethysts, what is it, they are still investigating, and it is not clear.

But they at least know that amethyst is closely related to the changes in the world, and at the same time there is this kind of energy, which is very huge, which is unknown to people in later generations, after all, there is no such mechanical equipment in later generations to understand these amethysts, in comparison, although this era is more chaotic, but at least the level of science and technology is also higher.

Through the understanding of scientists, it was found that as long as these amethysts are made smaller and small enough, then even if their internal power is very strong, they can also be used, for example, in the wall, as an additive, and his effect is really good, using the wall made of amethyst, you can purify the water source, so that the city has unpolluted water, and at the same time can resist the invasion of monsters.

Those ordinary animals seem to be afraid of the power of amethyst, when they see this amethyst, they will quickly leave, escape, this makes scientists begin to study how to build this wall, in order to crush the amethyst to the point that the power is not out of control, the entire team of scientists can be said to have tried all kinds of methods, amethyst is far stronger than people imagine, and then simply spent a lot of effort from Hai'an City to directly transport a hydraulic press, which is considered to be the amethyst into powder, and then began to build the city wall.

Those magical amethysts were added to the city wall, which Shu Han had never imagined, and it was no wonder that this city wall could last for a long time after three hundred years, and there was such a reason in it, which also made Shu Han more curious about amethyst.

At that time, in the last days, because he was an ordinary person, he didn't have the opportunity to participate in the research on amethyst, and he was naturally not qualified to ask about those documents, which was the privilege of the Skywalkers of Black Iron City and Joaquin City, and even if he was the head of this country, he was not qualified to check it.

So for amethyst, all his thoughts are speculation, or they learned from the mouths of Lin Bida and others, but they themselves are not scientific research talents, so their knowledge is also very limited, and like Zhang Ruoming and Yang Yi, the children of the family themselves, are also vague about Shu Han, they must know something, but in the end they still didn't tell Shu Han, obviously in this important ability, although everyone is a friend, they still chose to hide it.

Shu Han didn't blame them, if he was them, he might tell his brothers, but everyone has different ideas and different positions, Shu Han will only alienate them, but he won't blame them, so until he crossed over, he didn't know what the amethyst was.