The copper mirror is polished, and there is no sandpaper in this era, no matter how much you polish it, you can't polish the effect of the coating, and the background color of the copper is dim, and the people who shine out also look sallow, just because everyone is used to the copper mirror in themselves, and they can't detect it.

Now that Li Mu's silver-plated mirror came out, everything became clear, and the makeup that he thought he had passed in the bronze mirror in the past was flawed everywhere under the reflection of this silver-plated mirror. How can this make the fourth concubine acceptable?

It's the eldest grandson queen, who doesn't have as much of a sense of crisis as them. It's not that she doesn't have wrinkles, but her status brings a much better mentality than the fourth concubine, she and Li Shimin are childhood sweethearts, and they have a very good relationship, not by their appearance. The four concubines are different, they are called concubines in a nice way, in fact, they are no different from Li Zhien, aren't the concubines the emperor's concubines? If you don't have a look, it's a matter of time before you fall out of favor.

After seeing their defects, Concubine Yin and the others didn't care about staying to chat, and took the mirror that belonged to them back to their respective palaces.

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

And Wang Ou has never given birth, and her body is as slender as a girl, but she has already given birth to four children, and her posture is inevitably fat, but in comparison, she seems to be inferior.

Empress Changsun is an extremely smart woman, she governs the harem and treats everyone well, not that she is not jealous, but she knows that although there are three thousand beauties in the harem, no one can shake her position. But that Lady Peony is different, she is the person Li Shimin can't ask for. In the words of later generations, Wang Ou is the white moonlight in Li Shimin's heart, with a status that no one can replace.

But these words, she naturally wouldn't say them to a junior.

Empress Eldest Sun motioned for Li Mu to sit opposite her, and said with a smile: "You can always come up with new things, this mirror must be worth a lot of money, right?" ”

"The queen's eyes are like torches!" Li Mu exclaimed: "I really can't hide anything from the queen, this mirror is really expensive." Li Mu picked up the mirror that belonged to Wei Guifei next to her, she didn't come to play mahjong today, she had to wait to send it to her, Li Mu took it as an example.

"The frame of this mirror is carved from nanmu, which is not to mention, because compared to the mirror itself, this frame is almost negligible. Let's just say this mirror, you see the texture of it, it's made of glass. The queen had seen the bottle of perfume, and the mirror was made of the same material as the glass bottle. The difference is that this mirror requires more glass and the cost is higher. ”

"It's just the texture, the focus is on the reflective material of this mirror. Do you know what this is? ”

Empress Eldest Sun looked at it with a mirror and guessed, "Looking at its color, could it be silver?" ”

"Don't blame Your Majesty for saying that the mother is smart, it is true. It's Yinna! There wasn't much silver needed to make this mirror. The difficulty is how to spread this silver so evenly on this piece of glass, do not dare to deceive the queen, today the minister offered five mirrors, but the minister made for three days, after breaking countless glass, guess the remaining six complete mirrors, one of which is small, the minister left his wife, five large, the minister brought to the queen and the four concubines. ”

"Broke a lot of glass?" Empress Eldest Sun didn't understand the doorway of this, so she was very curious and asked, "Why is this happening?" ”

"Niangniang doesn't know, glass and silver, are two kinds of materials, such as wood and iron, Niangniang has ever seen pig iron in wood or raw wood in iron? This is almost impossible, and the minister used a secret method to forcibly fuse silver and glass, which is based on a common nature of the two. ”

Without waiting for Empress Changsun to ask, Li Mu continued: "This general attribute is that both can be melted when they encounter fire. When glass meets fire, it will melt, and silver will melt when it encounters fire, but fire cannot burn the two to ashes like burning wood. But the temperature at which the two melt is different, and the glass is very brittle, if you don't pay attention to it, the temperature is a little different, and the silver juice touches the glass, and the glass is crushed. It has to be when all the conditions are right for the two to be able to merge the two. ”

Li Mu sighed: "After the minister accidentally discovered that the two could be fused, he started the experiment with the help of the minister's two brothers. After countless failures, I had a little experience to make these five mirrors. The amount of material consumed is as much as a thousand. Chen calculated, if you want to buy and sell this mirror as a commodity, do this business, you have to sell at least 200 mirrors to keep the capital, although our thing is really good, but who will buy a mirror with 200 yuan? Therefore, before the problem of fusion cannot be solved, Chen no longer intends to continue to be a mirror. ”

"I see." Empress Eldest Sun rubbed the mirror in her hand, thought for a moment, and asked, "If this fusion problem is solved, this mirror can be made in large quantities?" ”

Li Mu nodded and said, "If the problem of fusion is solved, the glass will not explode when it is fused, or the number of explosions will be reduced." There is no problem with mass production, but in terms of cost, just the cost of glass and silver will cost about three times, and if you want to make money, you must sell more than five times. ”

"Wuguan...... Empress Changsun thought for a while and said, "If it is sold for Wuguan, it is a suitable price." This glass mirror is so clear, it is much stronger than the bronze mirror. A bronze mirror, even if it is smaller, requires consistent money......" After a pause, Empress Eldest Sun said again: "Li Mu, do you think it is possible to sell this mirror for a consistent price?" ”

"This ......" Li Mu was puzzled and said ambiguously: "If you have such a big mirror in your hand, you will definitely lose money." ”

"Don't be that big." Empress Eldest Sun measured the size of a palm and said, "It's so big, is it possible to have consistent money?" ”

Li Mu secretly said in his heart, not to mention the consistent money, the palm-sized mirror, the cost is only ten yuan, and the consistent money is also a hundred times the profit. But he still wondered: "Then you have to wait for the minister to break through the technical difficulties in making glass, and when the price of glass is lowered, maybe it can be done." ”

Empress Eldest Sun sighed and said, "I really hope that day will come soon." ”

Li Mu didn't understand and asked, "Why does the queen have this expectation?" ”

Empress Eldest Sun smiled and said, "Li Mu, although you are talented and talented, you also have some things you don't understand. Let's talk about the bronze mirror, do you know how much copper you have to save if all the copper mirrors in the world are replaced by this glass mirror? What if these coppers are made into copper coins? ”

Li Mu was stunned for a moment.

He was stunned not by anything else, but by the way Empress Changsun looked at things. As a native of the Tang Dynasty, she was able to realize the impact of the stock of money on the economy. These truths, even if they are left in the future, most people will not understand. But Li Mu understands, because the work he did in his previous life was data balance. A game server that can be considered as a small market on its own.

If there is a surplus of 'gold' in the server, it will cause the value of the gold to depreciate and the price of materials to skyrocket. If the stock of 'gold' in the server is scarce, it will affect the transaction.

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, and the more official version is called "selling money as a tool".

Gold, silver and copper naturally have the attributes of currency. Copper, if not coinage, has value in its own right. In fact, the value of copper coins is reflected in its weight. In this way, a problem arises. The wealthy family, the copper money obtained from the operation, can reach tens of thousands, such as Taiyuan Wang's family, hundreds of thousands of dollars are not new. These copper coins will rot after being stacked for a long time, how to solve this problem?

Melt it! Make utensils!

It is a very common situation to melt copper coins and make them into copper mirrors. Usually, when a wealthy family marries a daughter, they will give a bronze mirror as a dowry. When you don't need money, it's a mirror, and when you use money, you can sell the mirror and exchange it for money, a proper hard currency.

A slight extension of this question is the problem of currency hoarding.

A family like the five surnames and seven wangs, the emperor has changed for several generations, and their family is still there. Our ancestors have accumulated wealth for generations, and they have accumulated all the copper coins in the market into their own treasury. But they have very little to buy, which leads to families like theirs, who only plunder money from the market, and when the money is in their hands, it no longer flows into the market.

For thousands of years, copper has been mined in limited quantities. The more money the Maison saves, the less money there is in the market, and the direct consequence is that there are fewer transactions.

To give a simple example, if there are many copper coins in the market, the copper coins will depreciate relatively. A copper coin can buy a pear, and the transaction can be completed smoothly. But when there is less than half of the copper coins in the market, the original value of one copper coin becomes double. One copper coin can buy two pears, and the value of one pear is equal to half a penny at this time, but this person only wants to buy one pear, and this transaction cannot be completed.

With fewer transactions, the market is less dynamic, and in short, GDP is lower. As a game, for a dynamic server, the total amount of 'gold' must be moderate. We can't let the 'gold coins' depreciate too much, and we can't let the 'gold coins' be too few. This work is one of the main tasks of Li Mu's data balance before crossing over.

It is also because of this that Empress Eldest Sun raised her head, and Li Mu understood what she meant.

"The queen really deserves the name of the hidden appearance in the palace, you have such knowledge, you are not weaker than the room in the slightest." Li Mu stood up and saluted respectfully, he really admired it.

"How can you say such an exaggeration, this palace is just a woman, just talking nonsense. This important matter of the court has to be discussed between His Majesty and you, the ministers of the humerus......"

Before Empress Changsun finished speaking, a voice interjected: "The queen praised him, this kid is also worthy of being called humerus?" ”