And now there are only more than 1,000 people under his command, and it is impossible to rely on these populations to have children and develop, because he only has three years at most, and after three years of Zhenguan, His Majesty Li Er of the Tang Dynasty will basically stabilize the country and can gradually free up his hands to deal with the affairs of the Western Regions.

And when did the Tang Dynasty eliminate Gao Changguo, Huo Gang can't remember clearly, but what he knows is that this time will definitely not be too long, at most ten years, ten years, if their population develops on their own, how many people can there be?

So Huo Gang must find another way, the big deal is to spend money to buy slaves?

During this period, these people can still be bought, and with Lingquan Huo Gang is no longer worried about the problem of food, but if you buy slaves, you must have an economy.

Anyway, both the population and the money must always be the same.

People don't have to think about it for the time being, if they can't find someone, they will make money, but if they make money, Huo Gang thought about what was in his head, as a modern soul, the first thing he thought about was to use modern technology to solve the problems of this era.

After a long time, he smiled bitterly and found that after working for many years, there was not much left in his brain except for human feelings.

Thinking about it carefully, the biggest source of knowledge in his mind is actually the knowledge that appears in the novels in his spare time.

The formula of gunpowder he knew, 75% nitrate, 10% sulfur, 15% charcoal. The question is what about other than that? Eggs? It's hard to just find raw materials, let alone actually use them. As for the manufacturing methods of muskets, arquebuses, wire-mounted guns, rear-loading guns, bolt-action rifles, etc., I'm sorry, the author of the novels he read didn't write about it, he didn't know it himself, and he wasn't a military fan.

How to make glass He knows that it is made of sand, and there is a lot of sand in the Western Regions, so what about the firing process? Sorry, he doesn't know either.

In addition, it was a sentence that his grandfather told him when he was a child, and he also remembered that the whole body of the pig is a treasure. Even pig hair seems to be able to make some things, such as soap, nitroglycerin, etc., which are refined from pig fat, even if it is manure, it can be turned into farm fertilizer, right?

So the question is, what about pigs? Nope!

On the contrary, because of some of the knowledge of farming left in his mind by rural life when he was a child, he knew that animal manure can be pressed into the ground in autumn, and grass ash is also a good material for fertilizing the field.

In addition, there is the most important strategic resource in ancient times, steel, this Huo Gang knows that the difference between steel and iron seems to be that in addition to carbon, the sulfur content in iron is somewhat high, and then desulfurization and a little carbon can become steel.

And he also knows about blast furnace steelmaking, I have to say that this knowledge is still thanks to a novel he has read, an industrial novel that traveled to the early days of the founding of the People's Republic of China and was full of blast furnace steelmaking, and the author introduced the detailed knowledge of blast furnace steelmaking in detail, which Huo Gang still remembers.

The question is...... What about iron ore? The nearest seems to be that there are a lot of iron ore mines in Xinjiang in later generations? It's just that it now seems to be the Gaochang Kingdom and the Western Turks?

In addition, he knows where the seeds of some grains come from, such as potatoes, sweet potatoes, and corn, which seem to come from the American continent. The question is...... In this day and age, want to go to the Americas?

There are also some artifacts used in construction, and he also knows how to make cement, but the question is what about some of the main minerals used to make cement, such as limestone? Not at all!

Oh, I finally remembered the same, the curved plow, which can greatly increase the efficiency of plowing and reduce resistance, but this thing seems to have been invented in the Tang Dynasty? Although it is certainly not invented yet.

For a long time, Huo Gang was a little speechless and found that he seemed to have studied for so many years, and he was simply useless, and it was not even as useful as the skills left to him by his ancestors in his mind.

Although he also knew that there was some knowledge that he just didn't think of how to use it, even if he remembered it now, it was estimated that the mathematics at the junior high school level was much stronger than this era, and it was also very useful, but these could not solve their current predicament for the time being.

However, these things, Huo Gang understands, this is the place where he transcends this era, the historical experience and knowledge that have been left over for thousands of years are all stored in his mind, but these precious treasures cannot be used for the time being, and one day they will find their use, even if some of them he can't think of at all, but maybe they are of great use.

After thinking about it for a long time and sorting out all the things he knew, Huo Gang found with some bitterness that he felt like a waste, at least compared to his old ancestors.

If he had known that he had crossed over this day, I'm afraid he would have tried to become an engineering doctor or something.

Now he suddenly understands how difficult it is for an ordinary modern person, whether he is reborn or time-traveling, to transform an era by relying on knowledge! Unless you're good enough!

However, these thoughts are not useless, at least Huo Gang has found a way to break through the current situation, since modern technology is not used, then look for something that can be used from countless histories.

For example...... Blocking the road and grabbing ...... Bah...... Not a robbery, to be precise, a roadblock? The most bullish Silk Road in ancient China passed through here, although it is said that in the early Tang Dynasty, the Western Regions were more chaotic, in fact, there were still caravans here.

Merchants, from ancient times to the present day, are the same kind of people, and as long as there is enough profit, these merchants dare to appear anywhere.

And the Silk Road during this period was really gold, although the Western Regions were very dangerous, horse thieves, Turks, and the harsh natural environment made these caravans full of risks.

But these caravans are still one after another, because the profits of the Silk Road during this period are really much greater than the profits of selling white noodles in later generations!

Huo Gang thought about it, if they wanted to break the deadlock in the early stage, they could only find a breakthrough from these caravans.

These caravans in this period, as long as they are given enough profits, they can get a lot of things that you can't get, such as grain, in fact, Huo Gang doesn't need too much grain now.

Especially after getting the cattle, sheep and horses of this medium-sized tribe, the food in Huo Gang's hands can be said to have increased greatly, but in the same way, he has a lot of people to feed, at least these more than 1,000 elite soldiers, they eat much more food than ordinary people.

But it's still the same sentence, it's a big deal, in Huo Gang's vague memory of inheriting the original body, they have been robbed by the Turks many times.