The bronze mirror is made of polishing. There is no sandpaper in this era. No matter how hard you polish it, it will not be able to polish the coating. In addition, the background color of the copper is dim, so the person who looks sallow, it is just because everyone is used to themselves in the bronze mirror and cannot detect it.

Now that Li Mu's silver-plated mirror appears, everything becomes clear. The makeup that he thought was passing in the bronze mirror in the past was actually flawed everywhere under the reflection of the silver-plated mirror. How can the four concubines accept this?

However, Empress Changsun did not have the same sense of crisis as them. It’s not that she has no wrinkles, but that her status brought about a much better mentality than the Four Concubines. She and Li Shimin had a deep relationship with each other, and it was not about her beauty. The Four Concubines were different. To put it nicely, they were called concubines, but in fact, they were no different from Li Zhien. A concubine was the emperor’s concubine? If she had no beauty, it would be a matter of time before she fell out of favor.

After seeing their own defects, Yin Fei and others didn't care about staying to chat. They took the mirror that belonged to them and returned to their respective palaces. Those with acne were removed and those with wrinkles were removed, and they each found ways to get them.

Empress Changsun looked at herself in the mirror for a while, and Wang Ou's appearance flashed in her mind to compare it. What she had to admit was that although Wang Ou was two years older than her, her appearance was really younger than her.

Moreover, Wang Ou has never given birth and is as slim as a girl. However, she has given birth to four children and her figure is inevitably fatter. In comparison, she seems to be at a disadvantage.

Empress Changsun is an extremely smart woman. She manages the harem and treats everyone well. It is not that she does not have jealousy, but that she knows that although there are three thousand beauties in the harem, none of them can shake her position. But that Madam Peony is different. She is the person Li Shimin cannot get it. In the words of later generations, Wang Ou is the white moonlight in Li Shimin's heart, and has a status that no one can replace.

But naturally she would not say these words to a junior.

Empress Changsun signaled Li Mu to sit opposite her and smiled and said, "You can always make new things. This mirror must be valuable, right?"

"The queen's eyes are as wise as a torch!" Li Mu exclaimed: "It's really impossible to hide anything from the queen. This mirror is really expensive." Li Mu picked up the mirror that belonged to Concubine Wei next to her. She didn't come to play mahjong today and had to wait a while before she could deliver it to her. Li Mu took it as an example.

"This mirror frame is carved from nanmu, so I won't mention it, because compared to the mirror itself, the frame is almost negligible. Let's talk about this mirror. Look at its texture, it is made of glass. The queen has seen a small bottle containing perfume. This mirror is made of the same material as the glass bottle. The difference is that this mirror requires more glass and is also cost-effective."

"This is just the texture, the focus is on the reflective material of this mirror. Can the queen know what this is?"

Empress Changsun looked in the mirror and guessed, "Look at the color, is it silver?"

"Your Majesty is not blamed for saying that the Empress is so smart. It's really silver! There is not much silver required to make this mirror. The difficulty lies in how to spread the silver so evenly on this piece of glass and dare not deceive the queen. Today, the five mirrors presented by me were made for three days and broken countless glasses. After guessing that six complete mirrors remained. One of them was small, and I left it to my wife, five big ones, and I brought it to the queen and four noble concubines."

"A lot of glaze was broken?" Empress Changsun didn't understand the tricks, and was very curious and asked, "Why is this happening?"

"The Empress Dowager doesn't know that glass and silver are two kinds of materials, such as wood and iron. Have you ever seen pig iron in wood or wood in iron? This is almost impossible. I used the secret method to forcibly merge silver and glass in it, based on one of the common characteristics of the two."

Before Empress Changsun asked, Li Mu continued: "This universality is that both can be melted when they encounter fire. Glazed with fire will melt, and silver will melt when they encounter fire, but fire cannot burn the two to ashes like burning wood. However, the melting temperatures of the two are different, and the glass is very crisp. If you don't pay attention, the temperature difference will be a little different. When the silver juice touches the glass, the glass will shatter. It must be when all conditions are suitable to combine the two into one."

Li Mu sighed: "I accidentally discovered that the two could be integrated, and then started the experiment with the help of my two brothers. After countless failures, I had some experience and made these five mirrors. The materials consumed were as much as a thousand guan. I calculated that if I wanted to buy and sell this mirror as a commodity and do this business, I had to sell at least 200 guan per mirror to ensure the capital. Although our thing is indeed good, who would buy a mirror for 200 guan? Therefore, before the problem of fusion cannot be solved, I no longer intend to continue making mirrors."

"So that's it." Empress Changsun stroked the mirror in her hand, thought for a while, and asked again: "If this fusion problem is solved, will this mirror be made in large quantities?"

Li Mu nodded and said, "If the problem of fusion is solved, the glass does not explode during fusion, or the number of bursts is reduced. There is no problem in mass production, but in terms of cost, the cost of glass and silver is about three stakes. If you want to make money, you must sell more than five stakes."

"Why are you five silos..." Empress Changsun thought for a while and said, "If you sell five silos, it would be a suitable price. This glass mirror is so clear, it is much stronger than a bronze mirror. A bronze mirror, even if it is smaller, will cost you a one-month money..." After pausing, Empress Changsun said, "Li Mu, do you think this mirror can be sold for a one-month money?"

"This..." Li Mu was puzzled and said ambiguously: "If it were such a big mirror in your hand, you would definitely lose money forever."

"Don't be so big." Empress Changsun measured the size of a palm and said, "Is it possible to be so big, is it possible for a permanent amount?"

Li Mu thought to himself, let alone the usual money, the cost of a mirror as big as a palm is only ten cents, and selling it for a permanent money is also a hundred times the profit. But he still said: "Then I have to wait for me to break through the technical difficulties of making glass. When the price of glass is reduced, it may be possible."

Queen Changsun sighed and said, "I really hope that day will come soon."

Li Mu didn't understand and asked, "Why does the queen have such expectations?"

Empress Changsun smiled and said, "Li Mu, although you are talented and talented, you still have some things you don't know. So you talk about the bronze mirror. Do you know that if the bronze mirrors in the world are replaced with this glass mirror, how much copper will be saved? What if these coppers are made of copper coins?"

Li Mu was stunned for a moment.

He was confused about anything else, but was surprised by the perspective of Empress Changsun's view of things. As a native Tang Dynasty, she could actually realize the impact of the amount of money on the economy. Even in later generations, most people would not understand these principles. But Li Mu understood them because the work he did in his previous life was data balance. A game server can be regarded as an independent small market.

If the amount of "gold coins" in the server is too high, it will lead to the depreciation of gold coins and the price of materials soars. If the amount of "gold coins" in the server is too low, it will affect transactions.

In the long history of China, money shortage has always been a very big problem. There are many reasons for this problem, one of which is what Empress Changsun said, which is more official, called "selling money as a tool".

Gold, silver and copper naturally have the attributes of currency. Even if copper is not minted into currency, it has value itself. In fact, the value of copper coins is reflected in its weight. In this way, a problem will arise. The copper coins obtained by wealthy families can reach tens of thousands of guan. For example, families like the Wang family in Taiyuan are not new. These copper coins will rot after being piled up for a long time. How to solve this problem?

Melt it! Make a utensil!

It is a very common situation to melt the copper coins and make them into bronze mirrors. Usually, wealthy families will give a bronze mirror as a dowry when they marry their daughters. When they don’t need money, it is a mirror. When they use money, they can be exchanged for money and it is a solid currency.

This problem is slightly extended to the problem of currency hoarding.

For families like the Five Family Seven Wang, the emperor changed several generations, and their families were still there. The ancestors accumulated wealth from generation to generation and saved all the copper coins on the market into their own warehouses. However, they had very little to buy, which led to families like them who only plundered money from the market, and the currency in their hands and no longer flowed into the market.

For thousands of years, the amount of copper mining has been limited. The more aristocratic families have saved, the less money they have in the market. The direct consequence is the reduction in transactions.

To give a simple example, if there are too many copper coins in the market, the copper coins will depreciate relatively. If a copper coins can buy a pear, the transaction can be completed smoothly. But when the copper coins in the market are half less, the value of a copper coins will become doubled. A copper coins can buy two pears. At this time, the value of a pear is equal to half a month, but this person only wants to buy one pear, and the transaction cannot be completed this time.

With less transactions, the vitality of the market will be smaller. Simply put, the GDP will be lower. As a game, for a dynamic server, the total amount of "gold coins" must be adjusted moderately. You cannot make the "gold coins" depreciate too much, nor can you make the "gold coins" too little. This work is one of the main tasks of Li Mu's data balance before traveling through time.

It is also because Empress Changsun raised her head and Li Mu understood what she meant.

"The queen is indeed worthy of the name of the hidden figure in the palace. If you have such knowledge, you are not as weak as the appearance of the room." Li Mu stood up and saluted respectfully, and he really admired him.

"How could you say so exaggeratedly? I am just a woman who talks randomly. This major event in the court must be discussed by Your Majesty and you loyal ministers..."
Chapter completed!