With this money, Zhang San immediately began a large-scale expansion plan, and after stabilizing his original territory, Zhang San re-established a new outpost camp along the southern branch of the Tamsui River, and blocked the mountain pass road, doubling the territory of Ryukyu Island controlled by Zhang San.

The savage villages in the territory did not adopt the method of capturing all slaves this time, but asked all of them to go down the mountain to build a village to accept the rule, and all the villages that were unwilling to go down the mountain were all attacked and captured as slaves.

It's just that the smart ones are a few after all, only six savage villages were frightened by Zhang San's army, and there were also those who often traded with Zhang San who promised to build a village under the mountain, and Zhang San started a new round of slave capture plans.

Zhang San did not ask too much of the six villages that were willing to go down the mountain, but sent farmers to teach them how to plant and sell them a limited amount of iron tools, and of course other items such as salt and cloth were not restricted.

Zhang San's aim was to make them gradually evolve from hunting to semi-hunting and semi-planting villages, and eventually to villages that relied mainly on planting, of course, if they did not want to, they could also become merchants or workers.

Zhang San is now short of workers in many workshops, but unfortunately these savages don't know anything, but they can still do some manual work, such as carrying bags on the dock, in short, as long as they follow Zhang San honestly, there will always be a way to live. In this way, the wild man who was originally resistant quickly settled down.

Zhang San is studying whether to build a high-standard road on the island, after all, the upper reaches of the Tamsui River are not suitable for navigation, so Zhang San wants to build such a road, at least the deployment and mobilization of troops will be more convenient.

It's just a question of what kind of road to build, dirt road, sand crystal road, gravel road, Sanhe dirt road, rammed earth road, steamed earth road, brick and stone road, there are many choices, but what Zhang San wants to build the most is still a cement road or asphalt road.

It's just that without a steam engine, you can't produce large-scale crushing machinery, you can't crush limestone, you can't produce cement on a large scale, and it's okay to build a bridge and build a landmark building for small-scale production, but if you want this kind of large-scale paving, there is no way, unless there is a large-scale human input.

It's a pity that Zhang San doesn't have such rich manpower, as for the asphalt road, it needs an oil refining tower, Zhang San really has produced asphalt, but Zhang San has not developed oil on a large scale now, and naturally that little asphalt production is not enough to build roads.

In short, after industrialization, there is no way, Zhang San only needs to retreat to the next best thing to do a three-way dirt road to pave bricks, this kind of brick is the kind developed in the capital last time, although this kind of brick weighing may only be a few tons, but now there is really no car weighing a few tons in this world.

Therefore, according to the experience of using the capital during this time, such a road is enough for horse-drawn carriages to run back and forth, as for why not build a dirt road directly, at this time, because of the rainy weather in the south, if you use a dirt road, then there may be almost no days to drive throughout the year.

As for the way of building the road, Zhang San, according to the experience of later generations, first leveled the ground and then sprinkled with lime, ploughed one side with a curved plow, then flattened it with a target, and then turned the head on top of the mixture of gravel and sand that was rolled and tiled with a rolling stone after the plow was evenly mixed.

Such a set of processes perform their duties, sectional construction, the efficiency is still good, the manpower on the island is not rich, so Zhang San only organized a road repair team of 1,000 people, and in the future, with more and more personnel, the road repair team will gradually expand.

After finishing the road construction, Zhang San went to the canning workshop by the sea to have a look, and the whaling team finally had a harvest after a period of exploration, and the trawling team also figured out this advanced fishing method.

This has to be said that the master is in the folk, the original trawl fishing method of later generations relied on advanced sonar technology to determine the fish, and now there is no such technology Zhang San once tried to develop a periscope to achieve the purpose of finding fish.

But after Zhang San told the fishermen about his thoughts, these fishing veterans recommended their own way to find fish, that is, to listen to the fish technology, Zhang San was really amazed after listening, and shouted that the wisdom of the working people should not be underestimated.

This so-called listening fish is to insert a hollow bamboo tube into the water, put the ear in it to listen, experienced fishermen can hear the direction and number of fish within a radius of several miles, this is much more reliable than Zhang San's periscope.

As for why these people still can't catch enough fish with such good technology, in fact, the sea conditions in the sea are changeable, and the fish swim fast, but in this era, fishing still relies on casting nets, and the nets in the rivers can be quickly reached, and there are not many opportunities for the fish to escape.

However, it is shallow to cast a net in the sea for tens of meters, so the fish can jump off the net as long as they go downstream, not to mention that it is useless to hear that there are fish, and sometimes they may not be able to catch it.

However, the combination of this listening technique and trawling produced the effect of sonar, so after a period of practice, the fishing pair finally stabilized production, which led to a large-scale alleviation of the food problem on Ryukyu Island.

There was even a problem that the fish caught could not be eaten, which made Zhang San's plan to directly put on glass cans on Ryukyu Island have to be divided into two steps, first to build a clay pot canning factory, and then to replace the glass jars after they are produced.

Because the chassis is not large, there are not many types of minerals that Zhang San has discovered now, although Zhang San knows that there are coal mines and gold near Taipei, but there are no relevant talents, and Zhang San can't mine it.

Zhang San has already transferred two prospecting experts from the capital to start working on the island, but prospecting is not as easy as Zhang San imagined, Taipei's coal mines and gold mines are open-pit mines, so the two prospecting experts can only lead a team to use the Luoyang shovel to slowly dig the places they suspect.

Zhang San also only knows that it is near Taipei, but the more specific Zhang San is also blind, after all, in the geography book of junior high school and high school, a black square coal mine mark and a round mark half black and half white mark are marked near Taipei, and there is no specific location.

No one thought that they would use it one day, so no one understood whether it was or not, but it was much easier to give the approximate location than to look for it, and Zhang San believed that there would be good news after a while.

When Zhang San arrived at the cannery, there was really a whaling ship unloading the harvest, and pieces of whale oil were carried off the ship and transported to the refinery on the side, and the whale meat had been salted, and the matter was pulled off the ship and handed over to the cannery.

Zhang San's original illusion of wanting to see the giant whale was shattered, but the huge whale skeleton still satisfied Zhang San's good curiosity, and these bones would be broken and boiled into glue, and then burned to ashes as fertilizer.

Zhang San was watching the whale bones boiling glue, and suddenly thought of the problem of chemical fertilizer.