Compared to woodblocking, copperplate lines can be much thinner and the picture is much finer. In addition, after using ink, gravure printing can be performed, which is especially suitable for printing money. Du Zhongxiao had the impression that it was much more convenient to make copperplates by etching, and that they could express complex pictures, and even he remembered that the copperplates were etched with iron trichloride solution. It's a pity that after thinking about it for a long time, I didn't come up with a way to prepare ferric chloride.

As for the use of strong acids, such as sulfuric acid and nitric acid, Du Zhongxiao did not try. These two acids can be prepared, but in this era it is very uneconomical and dangerous, and it is better to wait for the further development of chemistry to take this path.

Now it is used to make plates by mechanical methods. Powered by a steam engine, the carving is much easier by using a flexible shaft to drive the cutter to rotate. With simple training, it can be operated by an average lettering craftsman. The key to this is the flexible shaft, which is wound with steel wire, although far less soft than later generations, is sufficient.

Every steam engine sold by the Iron Supervisor is registered, and the magistrate will regularly inspect the steam engine to prevent it from being used for illegal purposes. The steel wire flexible shaft looks simple, but it is actually very difficult to make, and it can also be controlled. Just like the printing method of the Yingtian Yamen, it is actually impossible for the people to forge counterfeit banknotes. However, people's thirst for money and the rich imagination of folk technical talents still make Du Zhongxiao dare not take it lightly.

Imitation counterfeit banknotes, Du Zhongxiao believes that the most reliable is printing. The ink used is specially made, and the picture is painted by a professional painter using a thorough method, and the forger can recognize it intuitively at a glance. It is concave printing, which has a special feel to the touch. These technologies are mature, and Du Zhongxiao is about to launch banknotes. Let's start with the savings receipts of the savings bank and try the reaction of the private sector.

The technology of movable type printing has matured, and the difficult thing is the font. Without the right typeface, the printed book looks uncomfortable and is not suitable for mass promotion. Du Zhongxiao tried to write some imitation Song characters by himself, and asked the carver to study them carefully, but it was not finished yet.

Out of the room, Du Zhongxiao shook his head helplessly. I thought a lot about metal movable type printing technology, but I didn't expect it to get stuck on the font in the end, which is really unexpected. At first, I didn't expect this to be a problem.

Leaving the room where movable metal type and copperplates were made, Du Zhongxiao and Su Shunqin went to the place next to them to make regular woodblocks and took a look. The carvers here also use a carving knife driven by a steam engine, and now it is very convenient to engrave plates, and holding the carving knife is like writing, and the woodblock is made quickly and well. With this method, movable type printing has no urgency and can be slowly improved.

The steam engine is used as a power source in almost every industry. Learning the method of making plates in the field, the Transshipment Department and the Shipping Department also bought steam engines for engraving, and even several important yamen in the capital also bought many units.

With the use of the steam engine in all walks of life, the Industrial Revolution has seen the light of day. It's just that the bulk of the textile industry is hemp textile, and because of the process, the demand for steam engines is not urgent. It can only be done slowly step by step with the promotion of cotton planting.

Time is always rushing, and before you know it, it's autumn.

He Da carried a burden, and when he arrived outside Ruan Degong's store, he saw Ruan Degong standing outside, and saluted: "It's so idle outside." ”

Ruan Degong looked at He Da and said with a smile: "He Da, your family has a good business, and you come here every few months to save money." ”

He Da said embarrassedly: "Outsiders are laughing, how can I have a lot of money in my family?" Because I often walk around, the villagers have money in their hands, and I also ask them to save it. I'm just a little bit of money myself, by the way. ”

Ruan Degong and He Da entered the door together, and when they heard this, they said, "He Da, I want to talk about you." Money is the most touching and coveted, so don't help people with money. They are saving money, just take care of themselves, how can they pass through the hands of others? ”

He Dadao: "They are all villagers, not outsiders, and there is nothing." ”

Ruan Degong opened the door, closed the door and entered behind the counter, pushed open the small window under the wooden grille, and said to He Da, who was standing outside: "How much money do you want to save today?" In whose names are they? Show me the proof of deposit. ”

He Da agreed, took out five or six savings vouchers from his arms, counted the money one by one, and handed them to the counter.

The camp has sold the land, and the Ruan Degong family is the best developed. He opened a shop here, and his son went out to study, and he never got involved in other industries again. It is precisely because of his stable business and good reputation that many businesses automatically come to his door. Chang Binh Si opened a savings bank to save money, and this town was run by Ruan Degong, with a generous monthly commission, and a lot of income.

Two months ago, the savings bank introduced a new policy to deposit fixed-term deposits with interest. As soon as this policy came out, it really caused a sensation. As long as you deposit your money and don't have any risk, you can get it, which is something that has never happened before.

In the past, if you want to use money to make money, you can only lend, you have to insure people, and you have to watch the person who lends money to prevent running away, many risks. Deposit in Changping Division, don't care about everything, you can collect interest when the time comes, and everyone is excited. In just two months, deposits at the savings bank have multiplied.

He Da finished saving the money and said to Ruan Degong inside: "Outside, take a look, the money I have scattered these days is full of money?" ”

Ruan Degong flipped through the account book and said, "It's always been a lot." Why, do you want to save it for a fixed time? Is it three months or half a year? ”

He Daodao: "Three months." When you save up again, and you have enough money, take them out together and save them for a whole year. ”

Ruan Degong praised it in his mouth, picked up the pen and corrected He Da's account, and handed over the voucher. He said: "Recently, Chang Ping Si issued an official document, and in the future, if you save money, as long as the three-month time limit has passed, you can raise cash in any state and county savings office on Jingxi Road." It can only be in the state and county, but not under the town. You remember, when you go out to do business in the future, you don't have to bring cash anymore. ”

He Dadao: "Outsiders are laughing, I just do some small business in my hometown, how can I go to other states and counties?" ”

Ruan Degong said: "You don't know, there have been more cars running on the railway recently, and there has been a lot of business in several states and counties along the road. For example, in places like Xiangzhou and Yexian, where there are big stations, there are all kinds of goods in the world. Just look at the look of each person, maybe buy something and come back, and make a lot of money. ”

Speaking of this, Ruan Degong sighed: "Since I opened this small shop, my life is stable, and I can't run." If it had been a few years ago, I would have gone out and seen what business I could do. My eldest man wrote back, and there were many shops in Ye County, and I don't know how prosperous it was. Two years ago, I wanted to learn some crafts and come back, but now the meaning of the letter is that I don't want to go home. ”

When He Da heard this, he was a little fascinated and said, "When did my family have money, I also took my family out for a walk." I only hear you talk about how lively it is outside, but unfortunately I can't see it with my own eyes. I heard that there is a big shopping mall in Fancheng, and there are all kinds of goods, and many people around have been there, but I have not been able to pull out. The family and the children sometimes quarrel, and they all say that they want to go to see it. ”

Ruan Degong collected the account, came out of it, locked the door, and said: "It's lively there, and there are countless goods." There is another thing that is not found in other places, that is, there are many famous shops inside, and the goods sold are very good, which cannot be seen from the outside. It's just that the price is too expensive, and we can't afford it. When you get there, you just don't buy anything, and it's good to have a long insight. ”

He Dalian nodded repeatedly: "Yes, yes, I have heard many people talk about it." When I save some money, I will also take my family for a walk during the Chinese New Year this year. Buy some utensils in the city, otherwise you will always be laughed at and uninformed. ”

He Da is doing a small business, taking care of the grain mulberry trees in the family's private field, and his life is getting more and more prosperous. If there is a job in the village community, his wife will do it, and she can earn some spare money. There are salted eggs and Songhua eggs, which is very easy and suitable for women.

The dog head has gone to school and is often praised by his husband. He Da paid attention to it, and the family was usually very simple and economical, saving money. If the dog head really has that life, can learn some knowledge, and go to work in a place like the iron prison, it will be considered to be out of the way.

In a few years, the news of the good treatment in the iron prison was known even to the remote areas hundreds of miles away. If you work in it, as long as you work hard, you will have no shortage of money and food, and you will live a prosperous life, which is better than being a public official in the yamen. There is only looking at the ability, not asking about the family background, which is a good way out for a poor family like He Da. Not to mention that if you learn the skills there, even if you don't do it, you can also rely on technology to start your own business, which is enviable.