The rolling mill made in this way, the force can not be too large, the operation is very complicated, but fortunately it is rolling copper, not steel plate, although there are many problems, but it is still difficult to use, the failure rate is also very high, can only continue to let people repair, prepare a large number of ironwood accessories for backup.

And they can't do continuous rolling, so they can only roll the copper plate one by one, first roll the copper into a thick copper plate, and then lift it to another rolling mill, continue to roll, roll it thinner, and so repeatedly adjust the spacing of the rolls, to gradually roll the copper plate into copper sheet.

Just this process of rolling the copper skin wasted a lot of their time, and after the ship was renovated, it wasted a lot of time just waiting for the copper skin.

The reason why Yu Xiaotian wants to transfer industry to fresh water is also because the water resources of Nanri Island are not rich enough, which has become an important factor limiting industrial development.

Therefore, the rolling mill for rolling copper plates has to use water power, and can only be produced in fresh water, and it takes a long time to toss back and forth before the copper is rolled.

After testing, the thickness of the copper skin they rolled by themselves is only about one millimeter, which is much thinner than the hand-made copper plate, and the quality is also very uniform, which is much better than the hand-beaten copper plate.

Although their rolling mill is rough and clumsy, the failure is extremely high, and the operation is still very troublesome, but compared with manpower, it is still a hundred times stronger.

This is the power of industry, once the machinery is put into use, even if it is only the simplest machinery, the production efficiency will be much higher than the production efficiency of pure manual small workshops.

The increase in production efficiency leads to an increase in output and a decrease in production costs, which is why after the industrial revolution, large quantities of small workshops could not survive, so that they went bankrupt in large numbers and were eventually hired as industrial workers by factory capitalists.

The development of industrialization also requires a lot of manpower, which can absorb these small workshop craftsmen into industrial workers, absorb a large amount of manpower into the factories to work, free up more land, and form a special working class.

The development of industrialization will produce a large number of products, and the industrialized products need to be consumed, which also encourages the capitalists to sell their commodities, and the country will certainly not be able to consume a large number of commodities, so they will have to dump them abroad.

Dumping requires a market, and occupying a market sometimes requires force to protect it, which is one of the reasons why he began to expand globally after the industrial revolution in Europe.

In modern times, China has never carried out an industrial revolution, it has always been in a small workshop type of production, the country naturally does not need to dump a large number of commodities abroad, and the capitalists will not focus on promoting the development of force, so that in the eighteenth and nineteenth centuries, China became a poor and backward country, and became the fat meat divided by the European powers, including the newly rising Japanese in Asia.

Therefore, at this time, Yu Xiaotian decided to spare no effort to promote the process of industrialization, at least within his jurisdiction, to promote the development of mechanized production on a large scale to change the course of historical development.

Now Yu Xiaotian already has quite strong strength, he didn't think about these things before, but now he has begun to seriously consider the future development issues.

He is no longer satisfied with his original idea, but is just satisfied with supporting his own troops, occupying a corner of the island of Taiwan, and surviving in the troubled times in the future.

As his strength grew, he thought more and more about things, and he became farther and farther away.

However, these words are a bit far, and at the moment he is still concerned about the problem of the ship, and after the problem of copper skin is solved, the renovation project of this three-masted Daifuku ship has begun to become logical.

In addition to the copper skin, there is also a problem in how to wrap the copper skin on the bottom of the ship, that is, iron nails cannot be used, because after the iron and copper are in contact, there will be electrolytic corrosion problems in the seawater, so copper nails must be used.

But Yu Xiaotian immediately stopped their brutality, and ordered to spare no effort to build copper nails as a means of fixing the copper skin, and it was necessary to replace the iron nails with copper nails and wrap the copper skin at the bottom of the ship, otherwise it would not be long before the copper skin at the bottom of the ship would have an electrolytic reaction with the iron nails in the seawater, and finally corrode and rot, losing the role of protecting the bottom of the ship.

For this reason, the British also encountered such a problem, and after looking for a long time, they found the problem of fluid electrolysis reaction in the contact between copper and iron in seawater, and replaced all the iron nails with copper nails to solve this problem.

And Yu Xiaotian, as a descendant, of course, knows these things, so such a detour can't be repeated, and he can directly solve this problem in one step.

In addition, he also explained the reason for this to the craftsmen of the shipyard, but for these craftsmen who were once illiterate, it was obviously difficult for them to talk about such a chemical reaction, but Yu Xiaotian couldn't tell them more things for the time being, as long as they understood for the time being that they couldn't use iron nails.

As for education, he could only hope for the schools he now had at hand, starting with the children, and educating them more systematically, so that the cultural quality of the population could be improved.

But now his biggest headache is probably education.

Although Yu Xiaotian attaches great importance to the cultivation of children and teenagers, he has opened schools in Nanri Island, Tamsui and even Keelung Fort, specially absorbing the children of the sea wolf tribe under his command and the children of the common people in the jurisdiction, and even collecting a large number of orphans from the land and putting them in schools for education.

However, he seriously lacks teacher resources, because there are very few scholars in this era who are willing to be thieves, and there are really only a handful of scholars like Lin Yiyang who were forced into desperation to serve under him.

Ancient Chinese cultural education, attaches great importance to the so-called loyalty education, learn literature and martial arts to sell to the emperor's family, this sentence is not just talk about it, the reader is to be able to one day the title of the gold list, from the court where to get an official and a half-job, to become the top class of this society, the reader is extremely despised like the sea wolf they are thieves.

Therefore, although Yu Xiaotian has been using various means over the years to recruit some scholars to work for him, and even does not hesitate to use violent means to kidnap or lure, the effect has not been good.

Many scholars are reluctant to do it for him even if they are poor pants, and the reputation of a thief makes them feel that they will be ashamed of their ancestors, so in the past few years, the highest education that Yu Xiaotian has gotten is a talent at best, and there are only a dozen people.

And there are not many of these people who are really desperate to work for him, and there are only some children who are a little more, at best, they can read some words and can write and calculate things.

Therefore, the most serious lack of his school is the resources of teachers, although he arranged a group of scholars to go to the school to serve as teachers, but these people can give very few things to the students, just some old things such as the Four Books and the Five Classics, these things are taught to the students, and they may not be of much benefit to him.

Because these things let the students learn most of them are loyalty to the emperor, but they also have a negative impact on him, so in terms of teaching materials, he really can't come up with many useful things, and he really doesn't have much time to write the teaching materials himself.

Very few of these teachers knew anything about the study of things, and it was impossible for him to teach students algebra, geometry, physics, chemistry, biology, mechanics, and the like at the moment.

Therefore, although he has run several schools, in essence, they can only be regarded as literacy schools, so that students can learn literacy first, and as for how to educate in the future, he can only drag it for the time being, and the students who pass literacy education can also carry out literacy for craftsmen and sea wolf tribesmen.

At present, the so-called educational work he is carrying out is basically stagnant in the stage of eradicating illiteracy, and he has encountered great difficulties in trying to move forward.

After he recovered a little, Yu Xiaotian went to the dock to inspect the deeply modified Daifuku ship, which was indeed modified according to his vision, the ship was now fully sailed, and the guns had been installed in place, and several sea trials had been carried out.

At present, it seems that the ship should be successfully transformed, after the transformation of the center of gravity, after careful trim adjustment, after the installation of the gun, there has been no major change, and even when a large amount of cargo is not considered, after increasing the weight of the bottom ballast, the center of gravity of the ship has been reduced.

As a result, the stability of this ship has been improved to a certain extent when it is sailing at sea, and under normal sea conditions, this ship can carry out normal battles, and after the gun window of the gun compartment is opened, it will not be flooded.

Even when the sea conditions are relatively poor, it will affect the lower gun compartments, the closed gun windows cannot be opened, and the guns on the upper deck can still be used normally, so on the whole, the transformation of this ship is relatively successful.

This is also a success based on the previous modification of several No. 2 Fukuku, and it is estimated that it would be difficult to achieve such a degree without the initial experimental modification of this ship on other ships.