Ning Zhiheng asked again: "What's the situation with the other two paper experts?"

"According to what they said, their analysis of fiat currency paper fiber has not been completed yet. If they want to make paper exactly the same as fiat currency, there is still a lot of work to do, but the one billion fiat currency alone is enough to give us a headache." He Siming said.

The material requirements for the paper required to make banknotes are very high. Papers of banknotes from various countries are specially made. Most of the paper materials are made of cotton, linen and other plants with long fibers as pulp. The paper made in this way is smooth and tough, has good stiffness, and has strong wear resistance. After long circulation, the fibers will not loosen, no hair or crack.

In addition, some methods are used in the papermaking process to make the paper have certain characteristics and clearly distinguish them from other papers.

However, each country has its own secret methods. For example, the Japanese yen in Japan is made of fibers from a unique plant in their country as the main raw material and combined with other plant fibers. The proportions of various ingredients are also top secret. Other countries do not have such raw materials at all, so the Japanese yen is difficult to forge.

The same is true in China's fiat currency. The production level of American currency companies is also very high, and the paper they use is also high-end raw materials, so it is very difficult to make the same paper.

Ning Zhiheng nodded and said, "It seems that they have a while to break through the technical problems of paper. At present, we only need to solve the problem of the engraving board. What do you think about how to destroy the engraving board?"

He Siming couldn't help but shake his head and said, "It is impossible. Shentian Yushan attaches great importance to the protection of the carved plate and has never left it. This time, I kept it for a while during the transportation period. He usually carried it with him. Every time he handed over to me, he would check it with a microscope, for fear of damage. I just wanted to do something. Now that the carved plate has entered the banknote printing base, it is even more impossible. The carved plate is placed on the fourth floor of the building, and Shentian Yushan is also working there to complete the final carving of the carved plate."

Speaking of this, He Siming handed over the internal structure diagram of the building he had drawn to Ning Zhiheng.

"I drew this from my memory, especially on the east side of the fourth floor, the interior layout of the warehouse where the fiat currency is placed. I drew it all, take a look!"

Ning Zhiheng was overjoyed when he heard this. Although he also had the structural diagrams found by Wang Hanmin and others, they were all drawn based on the memories of the former staff of the library building. Many places are not necessarily accurate. After all, if Kitaoka Ryoko wanted to turn it into a money printing base, he would definitely undergo partial reconstruction. Now He Siming has entered this building. Compared with the two, he has a more specific understanding of the internal structure.

Ning Zhiheng took the structural diagram and checked it carefully. Sure enough, he found that it was similar to the structural diagram that Wang Hanmin had before.

However, on the fourth floor, which is the floor where the original printing machine and legal currency are placed, Kitaoka Ryoko has made great reconstructions. In addition to the necessary supporting columns and walls, many houses have been opened to form a large workshop where the printing machine is placed, and next to it is the warehouse where the legal currency is placed.

"In the entire building, there were more than twenty guards I saw, and I judged that the total number would be twice as high, that is, about forty people.

When I passed the first floor to the second floor, there were people talking and chatting, and I judged that it should be the dormitory of the staff and the guards.

When passing through the third floor, the phone rings and the phone calls sounded, which should be in the office area.

I stayed on the fourth floor for the longest time and the situation was clearest. It was the place where the printing press was installed and the fiat currency was stored, and it was also the place we needed to know the most.

Iron doors are welded at the entrances of each floor, and guards are guarded by the entrances of the stairs and corridors. Only the fourth floor is equipped with a fully enclosed iron door, but there are also six fully armed guards and two light machine guns.

To enter the fourth floor, you need the key worn by Kitaoka Ryoko to open the iron door. The door inside the warehouse is made of steel, which is very strong. It and the door of the secret room also require Kitaoka Ryoko to open it. It is impossible to rush in by force."

He Siming said carefully, Ning Zhiheng thought carefully compared the structural diagram, and then asked: "It seems that we can only start with the warehouse. Can there be any loopholes in the warehouse windows be exploited?"

"Impossible. The glass outside every window will always be locked to death. The inside is welded with iron bars. Each piece is less than ten centimeters apart. Not to mention adults, even a child cannot get through it. It is completely closed and there are no loopholes at all!"

"Are there any guards on the roof?"

Ning Zhiheng tried to find a way to enter from the roof. With his skills, it might be possible to climb up to the roof in a very short time and invade the fourth floor from the roof.

"When I was resting on the fourth floor, I heard the sound of many people walking around on the roof. I judged that there were also people guarding the roof, and there were definitely more than one person."

Ning Zhiheng couldn't help but breathe a sigh of relief. Kitaoka Ryoko turned the entire building into a military bunker, with strict defense and strict internal layout, with almost no gaps to take advantage of.

Ning Zhiheng frowned and asked, "Is there no loophole? Shanghai is a coastal area with humid air. If so many paper and banknotes are placed, at least there should be an air-permeable passage. Otherwise, the dark and humid environment will cause the paper to get wet and become soft. She should understand these principles."

He Siming pointed to a point on the structural diagram and said, "It's right at this location. There is a ventilation opening on the upper right side of the south side of the warehouse and a fan is installed. But I see that the diameter is only more than 40 centimeters. Even a child can't get into the gap between the fan blades. There is a bare wall outside and there is no place to settle down, so there is no possibility of entering."

Ning Zhiheng looked at the structural diagram, lowered his head and pondered, and continued: "The situation you mentioned is very important. At present, it seems that it is impossible to enter from the inside of the building. You can only find a way to enter from the roof or from this vent. However, this is too difficult, and you must plan it carefully!"

Ning Zhiheng is very confident in his skills. He feels that as long as he designs well, he may have the chance to sneak in. But doing this is too risky. If you are not careful, you will get deeply trapped in it, and the consequences will be disastrous.

It seems that I have to start with Shentian Yushan first. Although it is only a treatment of symptoms but not a root cause, it is better to be postponed for a while. Moreover, it is relatively safe and simple to do so. Fortunately, he had some ideas before and believed that the chance of success is still relatively high.

Ning Zhiheng ordered: "I will take action soon. During the next period, you should not participate in anything in the money printing base, otherwise if there is a problem, it will easily involve you."

"Yes!" He Siming nodded and agreed.

Ning Zhiheng returned to Fujiwara Club and notified Tan Mansion in the concession that night that night, and immediately dispatched a Japanese-savvy translator to enter the downtown area of ​​Shanghai to wait for the dispatch.

Ning Zhiheng has always had several people who were brought back from Wuhan and proficient in Japanese translation. For so long, she has been in her industry, responsible for monitoring and translating, and also teaches intelligence personnel Japanese. Now many intelligence officers can understand Japanese, but their spoken language has not been very fluent. Among them, Zuo Rou's Japanese has improved the fastest. With her hard work, her Japanese is now very fluent, but she still has some accent problems.

Now Ning Zhiheng needs a Japanese-proficient person to cooperate with the next action, but no one around him except Yi Huaan's Japanese can be used.

Of course, Ning Zhiheng would not let Yi Huaan take this risk. Once the mistake is made, the consequences will be unpredictable.

One evening three days later, in a house in a Japanese gathering area, Yamada Shinjiki just came back from get off work and pushed open the door and found that it was dark inside the house.

He couldn't help but feel nervous. He also had his wife and son at home. When he returned home, his wife should have come forward long ago, asked about his well-being, and changed his clothes and shoes. His son would jump out and jump out and throw himself into his arms.

But today there was no one in the room. He raised his hand and pulled the light, and the room suddenly became bright.

Suddenly he found a young man sitting cross-legged in the living room of his house, looking at him with a calm smile.

Yamada Shinjiya subconsciously prepared to pick up the wooden stick behind the door. At this moment, he felt a gun being pushed into the room by someone, and the person behind him also walked in and closed the door tightly.

"Yamada, I am Essay Matsui, please don't get me wrong. We are not evil people. We have a business to talk to you about when we are taking the liberty to come to the door!" The man in the middle of the living room said softly.

"What do you want to talk about? Where are my wife and son?" Yamada Shinjitsu said with a gloomy face.

He looked around and saw no trace of his family in the kitchen and bedroom.

"No need to look for it, Yamada-kun, my wife and the child have been taken away by me!" Matsui Essay said softly.

Yamada Shinjiki only felt the blood surge upwards and asked sternly: "Who are you? What do you want to do? Let my family go quickly, otherwise I will call the police!"

But as soon as this sentence was said, the man holding a gun behind him hit his back with a gun. Yamada Shinjiki only felt a severe pain on his back, and a powerful force knocked him to the ground and threw his body in front of Essue Matsui.

Matsui Eisoki frowned and waved his hand to signal, and the gunman took a step back.

After a while, Yamada Shinjiki slowly stood up and stared at the other person with his eyes hatred.

"Yamada-kun, you are too impulsive. I said we have no malice, just a business."
Chapter completed!