(Sorry, a chapter is regularly distributed at 7 o'clock in the morning, and the chapter name should be Chapter 216 Refugees. Please refresh and watch with friends who have already subscribed.ps. Those who have already subscribed will not subscribe again.)

As soon as Dian Wei and others left, guards came up to report.

"Report! Xu Dezhi asked for a meeting."

Some time ago, he improved Xu Dezhi's position to the battalion level and dispatched him to Huaxia City to be in charge of smelting copper coins and forging some weapons. The work of the mine has been held accountable to his original subordinates, which is a recognition of him. It is impossible for such talents to keep doing low-level work. They must learn to manage and use their own knowledge to guide the people under their jurisdiction to do things so that the role of knowledge can be maximized.

Qing Cang didn't know why Xu Dezhi asked for a visit this time. Usually he was the only one who summoned them, and rarely did they take the initiative to ask for a visit. That must be something to ask him.

"Let him in."

After the guards went out, it was said that Xu Dezhi came in. He was holding two things in his hand, two copper coins and a small piece of gold.

"Meet the commander."

Qing Cang asked, "Well! What are you doing this time?"

"Return to the commander, this time I came to discuss with you about smelting. You were busy some time ago, so I dared not come to you. Recently I heard that you have plenty of time, so I came."

Qing Cang was really busy some time ago, and he didn't go out most of the time in the meeting hall, otherwise he would have to go out to deal with major matters. Naturally, it was not very important for such smelting matters, so Xu Dezhi came to ask for help while Qing Cang was free.

I remember that last time Qing Cang made an iron smelting method, which completely subverted people's understanding of iron smelting and made everyone admire him. Today, Xu Dezhi was able to come to him and had a preconceived feeling that if he encountered something that could not be solved, he would be right to find Qing Cang. So, he came.

"Tell me! What problems are encountered!"

"There are two main questions that I would like to ask. First, the question about this copper coin!"

Xu Dezhi held two copper coins in his hand, one new and one old, the new one was the Huayuan version of the copper coins, and the old one was the Wuzhu coins. It was obvious that there was copper rust on the surface of the Wuzhu coins. If the copper coins were not used frequently, it would be easy to produce some copper rust, which was more difficult to avoid. Only in constant transactions can the money look brand new.

"Oh? What's the problem with these two coins?"

Xu Dezhi said: "After the commander implemented the monetary policy, people began to exchange large quantities of Huayuan. A 100 yuan Huayuan denomination requires 100 copper coins, and what we want to make is only copper coins with a denomination value of one yuan. It is obvious that the amount of Wuzhu coins recovered is much larger than the copper coins we want to mint. Therefore, a large amount of Wuzhu coins are unnecessary. Once these copper coins are placed in the warehouse, copper rust will be produced over time. There is still no convenient and effective way to avoid copper rust. This is one of them."

In this way, a hang of money is exchanged for at least ten hundred yuan Huayuan. These two parts are completely different. It can be said that heavy exchanges for light, and the gathering of heavy will be a very large number of existence. Now the question of how to deal with this large amount of copper coins is in front of them.

This problem is indeed quite big. In modern theory, copper coins are oxidized. If not solved, then these copper coins will have partial loss. Xu Dezhi's purpose is to solve this problem. I hope Qing Cang can solve the problem of preservation of this copper coins for him.

He thought for a while and immediately thought of a method. Sometimes he often heard the term "waxing" in a car. This wax plays an isolation role to protect the paint of the car, isolate it from the air, and allow the paint of the car to be kept for longer.

However, if a large amount of copper coins are waxing, it will be a huge project, and the copper coins must be cleaned. This will consume a lot of human resources, which will not be worth the cost.

But if all the copper can be melted together, this problem may be solved. It is easier to use it in the future. Just like casting gold bricks, it is easy to save a copper brick.

So he said, "You can melt all the excess copper coins together and melt them to about the size of a brick, and then use grease to protect the entire copper brick, and save it in the cleanest place. I believe it will be stored longer. If some are rusted, then just treat it again and it will be as new."

Xu Dezhi patted his head and shouted, "Oh, why didn't I expect that, look at my head. If I do it like the commander, I can save a lot of space and be convenient for access."

Qing Cang smiled and asked, "What about the second question?"

Xu Dezhi took out a piece of gold from his hand and said, "Second, I have a piece of gold in my hand. It is very difficult to purify gold at our level. Most of the materials are too high and the efficiency is extremely low. I also compare the gold exchanged by foreign merchants, and there are also many impurities."

The gold in his hand had some black dots, and those black dots had been embedded in the gold, which was a manifestation of insufficient purity.

In ancient times, the refining of gold remained at the most primitive stage, and it was normal to be inefficient. Qing Cang didn't know anything about gold purification, and he didn't learn any knowledge about gold purification in school, so he couldn't use it, because purification was made with modern machines and nothing was done with him. So with his knowledge reserves, he really couldn't help, but with the system, there was nothing impossible.

Since Xu Dezhi mentioned it, Qing Cang will solve it for him, because he has read a book about smelting in the mall, which is clearly written on the improvement and purification book. It contains a large number of metal purification methods, and the price is ten days of health.

"You wait!"

Qing Cang turned around and began to gesture quickly. At this time, he was already very familiar with the position of each option, so it was very smooth to click.

Xu Dezhi didn't know what he was doing. He stood there stupidly and looked at Qing Cang. When he felt that Qing Cang was practicing witchcraft, when Qing Cang turned around, he had a thick book in his hand.

"Smelting"

It is a traditional Chinese lottery version of the book.

"This book is read, and it introduces the method of purifying gold in this way, and of course other metal purification methods."

He threw the book to Xu Dezhi. As soon as Xu Dezhi took it, he was stunned for a while before he began to flip the book. The more he looked at it, the more surprised he became. Sometimes he suddenly realized and sometimes he patted his head.

The methods recorded in it are very rich, and the pictures are even clearer.

He kept muttering: "Divine Book! Divine Book! Where did the Commander's book come from? It's so amazing!"

He couldn't help but dance.

"Okay, you go down and do it well!"

There are literary silly people, martial silly people, and Xu Dezhi, who is crazier about metal, actually has metal silly people. In his eyes, nothing excites him more than metal.

"Yes, Commander!"
Chapter completed!