Tang Dynasty good husband

Chapter 149 Solving Prelude
"Cheng Bo, how about looking at this?" Qin Chao held a few vouchers that had just been made and handed them to Cheng Yaojin, with a smile on his face, but also a strong sense of exhaustion.

For nearly a month, Qin Chao lived with the workers, including carpenters, paper workers, and all kinds of workers. Qin Chao tried to contact them, and a series of mysterious actions, finally It was not in vain. After a month, Qin Chao finally produced what he wanted. Although it was not so perfect, it was basically impossible to fake it in this era.

Cheng Yaojin took several vouchers, looked through them one by one, frowned, and said, "Boy, are you going to use this as a voucher?"

"Of course, it's what I've been working on for a month." Qin Chao nodded impressively.

"It's a good thing you're not that kid Chu Mo, otherwise the old man would have chased you around with a cane long ago." Cheng Yaojin muttered to himself, and then asked, "What's the cost of this thing?"

"The cost is not high, and because we are not those paper-making workshops, we don't need to buy those large-scale equipment. We only need a few workers and a small operation room. The materials are basically the same as normal paper-making workshops, except that Some other ingredients have been added. Generally speaking, with this kind of voucher, as long as we keep our eyes open, it is basically impossible for others to fake it." Qin Chao said with a smile.

"What is this? Although I am not an old pedant, I have read countless books. Why can't I recognize it?" Cheng Yaojin didn't bother with Qin Chao about the cost, anyway, he said that the cost is not high, and he doesn't need to use a lot.

Cheng Yaojin has also seen the size of the sun-dried paper, a piece of paper can be cut into six or seven vouchers in hand, how expensive can it be?

"Oh, that is the anti-counterfeiting number researched by the kid. There are eight different characters on each voucher. Different combinations of numbers represent vouchers of different face values. And all the numbers are the only one in the world. If If there are repeated numbers, it is a fake." Qin Chao explained the Arabic numerals in the lower corner.

"Trouble, but from the old man's point of view, even if you sell this paper, you can make a lot of money." Cheng Yaojin shook his head, then turned his gaze in another direction, "Why? Like? Are you interested in joining forces?"

Qin Chao shook his head. He wanted to make money, but he didn't want to make any money: "No, those who dare to make paper are basically rich and famous families. Although our quality is very good, if the aristocratic family is forced too hard, I'm afraid it will be a waste of money. It will have a counterproductive effect. We have made money, so we can’t help the family to drink some soup? Besides, it is very troublesome to purchase the raw materials of this paper on a large scale. As it is now, we only need to send a few people outside You can just collect it, and you don’t even have to purchase it.”

"Hmph, what a fool." Cheng Yaojin snorted coldly, then shook his head and said, "Forget it, let's finish the commercial street first."

Without modern technology, how to prevent counterfeiting of vouchers?This question may seem difficult, but for a person from later generations, as long as he is willing to think about it, things will not be particularly difficult.

From paper production to post-printing typesetting, every step can be used to design anti-counterfeiting.

For example, adding an appropriate amount of slaked lime (calcium hydroxide, one of the main components of bleaching powder) to the paper can make the paper whiter, but there are not many real white papers on the market, and the price is extremely expensive. It is not comparable to a little slaked lime at all. This is the result of the monopoly of the aristocratic family. The technology does not leak out at all, and it is impossible for others to steal his business.

But this kind of paper is a little loose, and it will shrink when exposed to water, and the paper surface is relatively rough.

Qin Chao added an equal amount of resin glue to the pulp, and with this kind of thing, the paper produced is basically smooth.

The second is to try to change the production process, etc., and the quality of the paper alone can basically prevent counterfeiting.

Not to mention the three-color printing on the back, different numbers grouping and other anti-counterfeiting marks.

Produced a voucher with anti-counterfeiting function, the commercial street became Qin Chao's only task at the moment.

The construction plan of the city wall was postponed indefinitely, but Li Er sent someone to tell Qin Chao that his design would be used in border towns, perhaps not as large as Chang'an, but it would definitely appear where he should appear place.

But Li Er didn't say much about the specific situation. He just told Qin Chao that the commercial street could be built according to his ideas.

Do I need to say more about the meaning of this?

Li Er wanted to see how fast cement can build a house?Is it really what Qin Chao said?

Qin Chao happily enjoyed the rare good time, and bargained with Li Er to get the right to use the four city walls.

Qin Chao didn't brag to Cheng Yaojin. After explaining the workers, Qin Chao went straight to the construction site.

As for how to deal with those workers, Cheng Yaojin will naturally solve it.

The construction site has been started for more than a month, and all the original buildings in Yong'an Square have been demolished, and the people living in Yong'an Square have also been transferred to other workshops. Qin Chao is only a developer, subsidizing each household by [-] yuan The subsidy is enough, and it is easy to do things with a background.

There are [-] laborers near Chang'an working hard in the workshop, and the foundation has basically been dug. It has to be said that digging the foundation to build a house in winter is really unprecedented.

But those laborers didn't dare to say much, they could only listen to the instructions and go to work.

Cheng Chumo became the supervisor of the entire construction site, holding Qin Chao's dictation and drawings drawn by a special person, and kept running to one construction site after another, jumping up and down to measure the size.

In a corner of the square, some houses that have not been demolished are full of cement, and outside are stones, gypsum, large sand, and a small amount of building materials such as steel bars.

Well, the iron and steel that is relatively lacking even in the Tang Dynasty has appeared on the construction site a lot.

The main credit is of course Qin Chao's, and of course Cheng Chumo, who is bound to lead the way.

Commanded by Qin Chao, Cheng Chumo personally went to the battle to conduct the experiment, using the method of coke and blowing itching, which greatly improved the output rate of steel.

In the same way, you only need to replace the fuel with so-called coke, and then prepare five huge bellows to blow air from the left, right, front, and top at the same time, and add a small amount of aluminum foil at the same time. Furnace steel.

In later generations, this is scrap steel with imperfect industrial procedures, and no one even uses it to build a house, but in today's world, it is an absolutely advanced technology. Just such a day's work has surpassed the craftsman's dozens of repetitions. Thumping effect.

(End of this chapter)