Du Jinning searched for the anti-counterfeiting technology of banknotes in his mind, and said: "My sister opened a printing shop, and she also has some experience in printing. I think that these experiences can also be applied to anti-counterfeiting. ”

"Oh, please." Zhao Yu's eyes lit up.

"First of all, the emperor can choose a paper that is extremely difficult to make and has a particularly complex process as the special paper for the Great Song Dynasty banknotes. This kind of paper is only used to print banknotes, and no private procurement is allowed. Secondly, the printing workshop can be allowed to study multi-color overprinting, that is, overprinting with red, blue, black and other colors; In addition, you can also design a piece of text and more complex micro-carved seals to print on it, the content can be the court on the punishment law for printing counterfeit money, dozens or hundreds of words. ”

She thought for a while: "I heard that there was a printmaking printing method in the Tang Dynasty, this kind of printmaking printing is also known as watermark calligraphy and painting, that is, it integrates painting, engraving and printing, and shows the ink rhyme of brushstrokes according to the principle of ink penetration. This method can be applied to the printing of banknotes. ”

"In short, it is the use of these methods together to increase the difficulty of preventing counterfeit banknotes, and the generation of counterfeit banknotes can be eliminated to a large extent."

"Okay, these methods are good." Zhao Yu became excited, "I just said that you have a way." Some time ago, I sent people to the money bank to learn the scriptures, and there was no better way, after all, when I printed paper money, I used the method of printing silver bills in the money bank. ”

When they heard that Zhao Yu had called Du Jinning to discuss the matter, several old ministers were still very unimpressed. They feel that Du Jinning has a talent for rice cultivation, which does not mean that he is proficient in government affairs.

But when they heard Du Jinning's methods, they were all dumbfounded.

During this time, they also used a lot of brains to solve the problem of counterfeit banknotes, but they could not do anything. But I didn't want this problem to seem to be not a problem at all in front of Du Jinning, and I solved the matter in one, two, three, four.

is so young, still a woman, I don't know how other people's brains grow, how can they come up with a way that they can't think of for dozens of years?

Remembering that after Zhao Yu's power was destroyed, Du Jinning's repeated mention of liberalizing the road and prospering the economy was proposed by Du Jinning, and the navigation was also proposed by her during the palace test, and the mood of these old ministers was very complicated.

Hong Huazhong, the governor of Zhongshu Province, who once wanted to marry his granddaughter to Qi Muyuan, but was ruthlessly refused, was still a little unconvinced, and asked: "Then you say, how to solve the problem of frequent crimes due to the flow of people?" ”

Hearing this question, not only Zhao Yu and Qi Bokun, who defended Du Jinning, frowned, but even the other ministers also showed disapproval.

They discussed this issue countless times, and they also mentioned it many times in the early dynasties, but they couldn't think of any good solution.

The anti-counterfeiting problem of banknotes is a technical problem, and she may know if you ask Du Jinning. But the problem of floating population crime is a social problem, too complicated, even the old man who has been an official all his life can't solve it collectively, ask someone a teenage doll, this old man Hong is too bullying.

Although Zhao Yu and Qi Bokun were a little dissatisfied with Hong Huazhong, they did not open their mouths to relieve Du Jinning. They also wanted to know if Du Jinning, who had a smart brain, would really come up with a good solution.

"Let me think about it." Du Jinning lowered his head in contemplation.

Although there are mature ways to copy it in later generations, she can't just say it without thinking about it.

"This problem is too complicated, we hundreds of old guys who have been officials for decades can't solve it, it's normal that Jinning can't think of a way, don't be pressured." Qi Bokun spoke.

This is obviously to protect the granddaughter-in-law.

Du Jinning raised his head and smiled gratefully at Qi Bokun: "Grandpa Qi, I know." ”

She looked at Zhao Yu: "I don't know if this method is feasible." ”

Zhao Yu knew that Du Jinning would not say anything. Since she said that there is a way, then this method must be more reliable.

He suddenly became excited, leaning forward: "It's okay, you can say it and listen to it." ”

Du Jinning said: "Because of the liberalization of the road guide, the people are not controlled to move around, and there is no way to investigate the crime, and they cannot be punished in time, which makes the crime rate high." Then, let's solve the problem at the root, and the situation will be improved. ”

"Solve the problem at the root?" The corners of Hong Huazhong's mouth faintly showed mockery, "Didn't you use the road guide to restrain people again?" So what's the point of us making this one? ”

Qi Bokun was seriously dissatisfied with Hong Huazhong this time. He didn't even notice that the old fellow's heart was as small as the tip of a needle, and he was really mistaken about him.

But before he could speak out, Du Jinning shook his head and said, "Naturally not." ”

She arched her hand towards Zhao Yu and said: "In fact, the root knot is that the household registration is in the hands of Li Zheng and the official office, and if the road is not opened, the people don't even have an identity certificate in their hands." We can get an ID card for the people. When the people go to other places to stay in inns, the inns register them; Go to the bank to deposit money and withdraw money, and it is stipulated that you must use your ID card to deposit and withdraw money; When doing business, check your ID card and know each other. Once a case occurs, with these traces, it is easy to investigate. ”

Hearing this method, everyone pondered and pondered its feasibility.

"But it's too difficult to make an ID card for everyone, right? What if those people make a fake ID? An official asked.

"Didn't you mention that banknote anti-counterfeiting technology just now? Just use that to solve the anti-counterfeiting problem. The matter of making an ID card is indeed complicated, but it can always be done by delegating tasks from province to province, and it takes two or three years of hard work to assign tasks at each level. Now, it can be tried in the three provinces where the road is opened. As for the cost of making an ID card, the people can pay part of it themselves, and the local government will take out a part of the tax to subsidize it. ”

Everyone nodded, thinking that maybe this method would work.

Zhao Yu was not satisfied with Du Jinning's performance.

No matter whether Du Jinning is a man or a woman, and what her identity is, as long as she can solve problems for the court and think of a good way that others can't think of, then she is an indispensable figure in the Great Song Dynasty.

At least in his opinion, Du Jinning is stronger than many ministers.

"Okay, just try it as you just said. If it works, I'll be rewarded. Zhao said.

Everyone looked at Qi Bokun's eyes and suddenly became envious.

With such a granddaughter-in-law, not to mention how much credit can be earned for the Qi family and Qi Muyuan, at least the prosperity of the Qi family is just around the corner.

Zhao Yu asked again: "Can the rice problem be solved?" When will the rice be planted? ”

"It can be solved. Rice seeds will be cultivated in two seasons next year, and they will be able to be popularized within a certain range the year after that. Du Jinning said, "But if you want to plant high-yield rice, I'm afraid you can't keep the seeds yourself, and you have to spend money to buy seeds every season." ”