Li Zhi was delighted when he saw the old Taoist priest refining mercury, and said, "Taoist Master Cao, I want to use a lot of mercury. How about you refine the mercury specifically for me in the future? I will give you four taels a month and three meals with meat."
"
When Cao Shoudao heard Li Zhi's words, he looked troubled and said, "Sir, Xiaodao is busy refining elixirs every day. He is asking for the way to immortality. I'm afraid I can't refine mercury for you." After looking at Li Zhi's face, Cao Shoudao said.
: "How about I sell you this method of refining mercury for one hundred taels, and you can just find someone else to operate it?"
Li Zhi looked at Cao Shoudao and felt that the Taoist priest was quite good at making money, so he asked for one hundred taels. Li Zhi smiled and said, "One hundred taels is too expensive, Taoist priests are cheaper."
Cao Shoudao looked at Li Zhi and said: "This method of refining mercury can be regarded as a secret method of my master's sect. It has many key details. My secret method is unlike other methods. It can screen out impurities in cinnabar and extract pure mercury.
It can keep the safety of the operator. I sell it to you for one hundred taels, which is considered a bargain. If it is any lower, I will be sorry to the ancestors of the sect."
It turns out that his secret method can also remove impurities from cinnabar, which is indeed more valuable. Seeing that he was convincing, Li Zhi stopped bargaining and said, "Then it's a hundred taels, I'll buy your method."
But you have to follow me to Fanjiazhuang and teach this method to my people until they can operate it independently."
Cao Shoudao said: "That's natural."
After solving the source of mercury, Li Zhi bought some tin blocks in Tianjin City and returned to Fanjiazhuang to start trial production of glass mirrors.
Li Zhi found a few tin blocks, cut them into pieces and threw them into the mercury. Tin is soluble in mercury, but the tin blocks will form a dense oxide film in the air. With this oxide film, tin cannot dissolve into it.
The mercury was in it, so it had to be cut open. However, Li Zhi waited in the room for a while and found that it dissolved very slowly.
At this dissolution speed at room temperature, it would take a long time for tin and mercury to fuse together, and Li Zhi couldn't wait any longer.
Li Zhi simply put the mercury and the tin cubes cut into small pieces into a small clay pot, and heated it over a low fire in the yard. The boiling point of mercury is more than 300 degrees Celsius, and the temperature heated over a low fire is lower than 300 degrees, which only allows the mercury to melt.
It is a liquid and will not cause mercury to boil. However, mercury will also volatilize below the boiling point, and its vapor is highly toxic, so Li Zhiren stayed away.
When the mercury and tin melted, Li Zhi took a long breath, then walked over and put out the fire in the small stove.
Li Zhi held his breath and stirred the liquid mercury and tin with a stick, and found that the two had dissolved into each other and became a tin amalgam alloy.
Li Zhi held his breath for a while, then walked to a distance to get some air, and then came back to operate. After running back and forth ten times, Li Zhi found that the tin amalgam had cooled and solidified, turning into a pool of solid metal.
Li Zhi went to the glass workshop and got a piece of flat glass the size of a human face as a template for the mirror.
He returned to the yard and heated and melted the tin amalgam alloy again. When the tin amalgam alloy turned into a liquid, Li Zhi found a small brush and held his breath and brushed the tin amalgam alloy on one side of the flat glass.
Several thick layers.
Li Zhi had to go to a distance to get some fresh air every few times. It took Li Zhi a quarter of an hour to brush the glass that was as big as a human face.
Then Li Zhi waited for the tin amalgam on the glass to solidify. After waiting for half an hour, the tin amalgam on the glass became solid. Li Zhi raised the piece of glass and looked at it from the front, and saw his face clearly.
After traveling through time for so long, this was the first time Li Zhi could see his own face clearly. Li Zhi’s first reaction was how this face was so similar to his before time travel, at least eight or nine times similar. If the two faces appeared one after another,
I'm afraid others will think it's the same person.
The mirror was not as bright as the aluminum mirrors of later generations. It was a little dark, but it was enough to see your hair and skin color clearly. It was dark because it was compared with the mirrors of later generations. Compared with the bronze mirrors of this era, which could only roughly see the silhouette of people, it was dark.
It's more than a little better.
This mirror is considered a success.
Li Zhi was in a good mood, and used a brush to apply several thick layers of tree paint as a protective layer on the tin amalgam coating on the back of the mirror. The mirror was finally completed.
After making this glass mirror, Li Zhi first sent it to Cui He.
Cui He was embroidering in the room. When he saw the glass mirror that Li Zhi brought over, he blinked as if he didn't believe it.
"Is there such a clear mirror in the world? You can really see eyelashes clearly!"
Li Zhi said: "I'm not cheating, am I?"
Cui He looked left and right in the mirror, never tired of it, and said, "So I was born so good-looking?"
Li Zhi smiled and said, "My wife is the most beautiful!"
When Cui He heard this, his face was overjoyed and he actually blushed a little. He was too embarrassed to look in the mirror again. After thinking about it, Cui He said, "My husband is so awesome!"
Li Zhi smiled and said: "I've given you this small mirror. You can study it slowly! I'll give you a big mirror after I make it."
Cui He happily took the mirror and placed it carefully on the table.
After the experiment completed the mirror, Li Zhi began to organize manpower for mass production.
This glass mirror is an absolute luxury in this era. Li Zhi decided to sell it at a high price, so he naturally had to pay attention to confidentiality. Li Zhi decided to configure the raw materials of the mirror, smelting tin amalgam, and painting the mirror surface with tin amalgam and raw lacquer.
The protective layers are all separated, and each process is handed over to one person. In this way, even if someone bribes one or two workers, there is no way to know how the mirror is made.
Of course, Li Zhi also controls the secret recipe from the source - only Li Zhi can produce transparent glass, and mirrors cannot be produced without large pieces of transparent glass.
Li Zhi hired five workers to produce mirrors. Li Zhi did not need a high output of such mirrors. Five people could produce twenty large and small mirrors a day, which was enough for Li Zhi to sell.
Seeing that the mirror was produced by their own hands, five workers gathered around the mirror to look at it, and they were indescribably surprised. It turned out that there was such a clear mirror in the world, and even a hair could be seen. The workers were astonished to the General, and they couldn't help but wonder.
I understand how the General could come up with such a clever idea.
The general must be Lu Ban who descended to earth, right?
Li Zhi showed the produced mirror to his subordinates for inspection. Li Xing's first reaction when he saw the mirror was to hide aside.
"Brother, this is a magic trick, my face is completely covered in it!"
Li Zhi spat: "What magic, do you understand the mirror?"
Li Xing looked at it for a while and grinned his teeth in the mirror.
Zheng Kaicheng looked at the mirror for a long time and praised: "Sir, this mirror is too clear. I finally know what I look like!"
Li Laosi looked at the mirror and exclaimed: "The boss is so awesome, he can produce such a mirror! It must be easy to sell!"
Zhong Feng looked at the mirror for a while and said, "Sir, this mirror is great. Give me a small one."
Li Zhi divided mirrors into three types. The first type is a small mirror as big as the palm of your hand. It is installed on the cover of a wooden box and can be carried around. It sells for ten taels.
The second type is a mirror the size of a human face. You can see your entire face clearly in the mirror. The mirror is wrapped in a copper frame and sells for thirty taels.
The third type is a dress mirror more than one meter high. You can see your entire body clearly in the mirror. The outside of the mirror is wrapped in a wooden frame and sells for one hundred and fifty taels.
Of course, after you have made a good mirror, you must also do a good job in marketing. Otherwise, if you put the smooth mirror in the store and sell it, I don’t know how long it will take for it to be accepted by wealthy households and for customers to buy it. If you want customers to know about this new
product, the best way is to let the top class of society make this product popular first.
On February 28, Li Zhi made thirty mirrors over one meter high and sent them to the capital to present them to the emperor.
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