There was no abandoned land, only land that could not be used rationally, and Cao Xing immediately ordered the 20,000 people sent from Montenegro to all move here.

At the beginning, the people here also complained a lot, the birds here don't, even the Black Mountain is not as good, they still come here to do something.

However, Cao Xing laughed twice, and directly made people start again, sowing seedlings and seeds, and managing the environment here, only half a month has had initial results, the yellow sand has decreased, and the people are also surprised to see here, and Cao Xuan saw the opportunity and announced again that residents who wish to settle here can be exempted from tax for three years.

When the 20,000 people from Montenegro heard the news, they did not complain any more, and they began to learn the method taught by Cao Xing, slowly throwing away the yellow sand, sowing seeds, and developing one piece after another of fertile fields.

After the development of fertile land, it is necessary to consider the question of what to plant, and there has always been a saying that there is wheat in the north and rice in the south in this land, so in this case, let's plant wheat, which is just suitable for the dry climate here.

Therefore, batch after batch of wheat went into the ground, just waiting for the harvest of the next year, and at the end of the year, there was a heavy snow in the sky, and Cao Xing was afraid that the wheat would not survive, so he also taught everyone how to build greenhouses to protect crops.

Looking at the sky flying, the snow couldn't help but lift multiple ice cubes, Cao Xuan saw this and had a plan, these snowflakes that fell on the ground finally condensed into ice cubes, which is also a resource.

Although there was no such thing as a refrigerator or freezer in this era, in the records of ancient books, there was also a similar thing called Bingjian in ancient times.

This kind of thing is to use the ice cubes stored in winter, and every time it is hot in the summer, these ice cubes can be taken out to cool down, but in ancient times, this kind of thing can only be enjoyed by high-ranking officials and nobles, so it is not popular.

However, Cao Xing did not hesitate, and immediately asked people to start collecting ice cubes in large chunks, and dug a huge underground secret room here to store many ice cubes together, so that this place would be in a perennial low temperature.

Since it is the state of Ningxia, it can do many things, such as storing grain, so that the grain does not grow insects and mold, etc.

Whether it is Jia Xu or Jia Kui, Chewu and others, they have heard this kind of statement for the first time, and the key is that the method introduced by Cao Xing is also quite effective, so they all began to study seriously and humbly.

Now that Cao Xing has enough food stored in his hands, since food is not a problem, it is enough for all the people under his rule to have food and clothing, then it is time to do something else.

In this era, there has long been the production of cotton, but the use is not popular, the Western Han Dynasty, Zhang Qian sent an envoy to the Western Regions, opened up the Silk Road, at that time, whether it is silk or cotton and other things, has been spread in the Central Plains, but because that thing is relatively rare, so it is still a thing that can only be enjoyed by rich and noble people.

Cao Xing immediately paid again, set up a textile factory, called workers with a little bit of technology, and let them continue to imitate cotton and silk, which can be regarded as the beginning of light industry.

At the same time, Cao Xing also combined cotton and silk well, the outside is silk, but the inside is cotton, so that the latest and most simple down jacket came out.

When Cao Xuan took the first down jacket and asked Jia Xu and the others to wear it, they were all surprised, this kind of clothing was far lighter than the fabric on their bodies, but it felt unusually warm when they wore it, much warmer than the clothes on their bodies.

Jia Xu and others asked Cao Xing, what is this, Cao Xuan did not shy away from answering, this is a down jacket, and at the same time began to let the factory produce a large number of people, he wants to let every citizen under him be able to wear this kind of clothes.

But here is the cold north just with a down jacket, it seems that it is not enough, after all, Cao Xing is a person from the twenty-first century, this day he was marching in the army, and suddenly found something interesting on a certain hillside, Che Wu and others saw Cao Xuan stop there and did not leave, Cao Xuan pointed to a black thing and asked Che Wu.

"Do you know what this thing is!"

"Lord, of course I know, this thing is called the black stone, according to the locals, the black stone is everywhere in their mountains, but this thing is poisonous, so it is useless, usually the people see this kind of thing, they will take a detour, after all, when you step on it, it is all black!"

Hearing this, Cao Xing sighed in his heart, this is obviously a mountain of gold and silver, but it was said by Che Wu and others to be a black stone, in fact, this is to put it bluntly, that is, the coal of later generations.

Cao Xing immediately asked people to take a large bag of coal back, and then lit a stove in his own residence to burn these black stones, and everyone saw Cao Xing actually burning black stones in his house, one is that Cao Xing can't think of it, don't you want to commit suicide, Che Wu and others hurriedly stopped, but Cao Xing waved his hand and said it's okay.

This time, Che Wu and others really thought that Cao Xing was trying to commit suicide, Cao Xing not only burned the black stone in his house, but also wanted to live here, it was not Cao Xing, there was really something that could not be thought of, you must know that the gas released by the burning of the black stone is not only toxic but also very smelly.

Che Wu and the others were killed to prevent Cao Xuan from entering his room, Cao Xuan was also quite speechless, and finally could only take a step and said, since Che Wu's people want to guard at the door, then guard it, but he Cao Xuan is the one who wants to go in to sleep, if it is at night, suddenly something is wrong, Che Wu and the others will quickly break in.

Che Wu and the others couldn't twist Cao Xing, and it was the only way, but when the moon stars were scarce, Che Wu knocked on Cao Xing's door and found that there was no reaction at all, Che Wu was frightened, and without saying a word, he immediately kicked in the door.

It's just that everyone sees it, but Cao Xing is leisurely there with tea and candles reading books.

Cao Xing didn't have anything to do, and Che Wu was relieved, but soon Che Wu and the other intruders felt that there seemed to be something wrong in Cao Xing's room, to be precise, there should be some peculiar smell, but it was not particularly unpleasant, and more importantly, Cao Xing's room was extremely warm. The temperature here doesn't seem to be much different from a hot summer day, and you don't feel cold even if you take off your clothes.

Looking at the puzzled faces of Che Wu and the others, Cao Xuan stood up and smiled, and pointed to the window, only then did everyone find that Cao Xing's window was actually open, and the exhaust gases released by the burning of these black stones, the unpleasant gases all flowed out, and what was left in Cao Xing's room was only extremely warm.

Seeing this, everyone reacted, as Cao Xuan said, this black stone is not only not a useless thing, but also a treasure.

found such a thing as coal, Cao Xing naturally accepted it unceremoniously, Cao Xing not only wrapped all the coal in this mountain, but also directly created a new type of term, called the company. The coal company was formed, and if every family wanted to sleep warmly in the winter, they could come to the coal company and buy coal.

Cao Xing believes that this will be a very large amount of income. Cao Xing's westward expansion has only been three months, and there has been a huge harvest, everyone sighed, it seems that Cao Xing's radical strategy is really no problem, originally everyone thought it was just a wasteland, however, Cao Xing successfully turned this wasteland into a treasure.

Now Cao Xuan has not only turned this piece of land into treasure, but more importantly, with Cao Xing's pace of continuous progress, his territory has expanded a lot, if it is according to the ordinary geographical division, Cao Xuan has at least now expanded the territory of two counties.

Of course, Cao Xuan took the territory of the two counties and used it as its production base, not only coal, wheat and other things, but more importantly, Cao Xuan developed its animal husbandry here very well, and a large number of cattle and sheep were put here. It is estimated that when these cattle and sheep grow up, their meat quality can enter the market, and at that time, this troubled era will become an era when everyone can afford to eat meat.

Cao Xing's exploits are in the eyes of everyone, and everyone applauds, after all, Cao Xing's series of actions are indeed impressive, and now the people under Cao Xing's rule have reached 300,000 people. This is indeed exciting news, and seeing that everyone is so happy, Cao Xing is also happy, and he held a banquet that day, inviting everyone to enjoy together.

However, Cao Xing and the others were not happy for long, and finally came with an unfavorable news, and this time, the person who sent the news planted a black order flag again, and it was obviously another 100,000 urgent letter.

After reading this 800-mile urgent letter, Cao Xing did not hesitate, and immediately sent troops to personally take Zhou Canghu Che'er to lead 10,000 soldiers and horses to defend against the enemy.

Along the way, Cao Xing followed the pace of the workers and slowly built the Great Wall, and on the way, he would definitely encounter some Xianbei tribes or Qiang tribes.

However, these tribes are relatively small, and they were eventually annexed by Cao Xing, but this time it was obviously not a small tribe that attacked Cao Xing, to be precise, it was a huge army.

In this legion, there are not only the tribes of the Qiang people, but also the tribes of the Xianbei people, and more importantly, there are Han people mixed in, and the proportion of Han people is very large, and the commander in chief is also a Han man, named Han Sui.

In a trance, Cao Xuan also remembered that when he went to Xiliang, he also had several encounters with this Han Sui, and his impression of Cao Xuan was that he was worthy of the title of Jiuqu Yellow River in history. Han Sui's scheming was so deep that it was by no means as common as recorded in history, if it weren't for Cao Xing's clever use of tactics at that time and successfully drove him away, I'm afraid Cao Xing's trouble at that time would have been great.