While Li Yi was lamenting that the intelligence agents were not professional enough, Yu Huaide and a group of people carried boxes and mysteriously entered each household.
They could only find people who were relatively wealthy. At the very least, both parties had to know each other.
They entered a household and stayed for about 15 minutes. When they came out, the other party sent them all the way to the door.
Looking at the expressions of both parties, they were very happy.
The people who followed them couldn't figure out what was going on.
Until a family sent the mirror over and said, "That mirror is really useful. Three days, right? I'll wait. There's no hurry. "
"Yes, three days. You're early. If others try it again, they'll have to continue to wait." Yu Huaide was responsible for this family.
The people who followed them got a word: mirror.
Sell mirrors? Do they need other people's help to sell mirrors? Everyone knew that there was a mirror in the Li family's village.
It was called a glass mirror. It was easy to wipe and light.
Yu Huaide and the others were indeed selling mirrors, spectacles, myopia glasses, and reading glasses.
Under normal circumstances, those who suffered from myopia were scholars. Rich people had more myopia. They could afford oil lamps and candles.
If they couldn't adapt to that kind of light for a long time, they wouldn't suffer from myopia.
It was easier to get blurry eyes with age.
Yu Huaide and the others first looked for rich people to sell. The boxes were filled with lenses of various degrees. They tried them one by one. The left and right eyes might not be the same.
After they tried it, they would write it down. When the glasses were made and sent to the door, they would pay.
One lens was 10 grams. The frame was free.
For every one sold, Yu Huaide and the others would get a commission of 10 grams.
They didn't care about those who didn't have money. Otherwise, if they were cheap, how could they earn money from the rich?
"Brother Yi, are you going to sell the glass?" Li Chengqi came over at noon. After he learned about the situation, he wanted to ask.
"Scholars are myopic. It's tiring to be an official and it also affects their lives. Since it can be made, let them use it.
After a few days, I'll think about how to work on the frames. The prettier the frames, the higher the price.
Ordinary frames can be cheap. Those with myopia and blurry eyes can wear them if they pay a little. "
Li Yi realized that when 220 students were in class, some students couldn't see the writing on the blackboard. They put it in the first row, but they still couldn't see it.
Only then did he think about the troubles of the other scholars. The old people's eyesight was so bad that they were almost blind.
"Can't the two lenses form a telescope?" Li Chengqi had experimented and found that the telescope could be enlarged.
"It's upside down, and what can you see with that kind of telescope? The lenses were thin. You've dismantled a telescope before, right? It's different, right? "
Li Yi felt that the effect of using reading glasses to assemble a telescope was too poor.
"You're always willing to give things that make money to the common people for cheap." Li Chengqi sighed.
"In a few days, I'll specially make a tea set. It'll be a complete set, similar to the ones I gave you and Third Brother. I'll publicize it in the newspapers."
Li Yi made a gesture of brewing Kung Fu tea.
He wanted to sell a batch of tea sets first. Then, it would become popular to drink Kung Fu tea. That way, the sales of tea leaves would increase.
Of course, Kung Fu Tea could be brewed with black tea as well as green tea.
Li Yi said as he took out a teapot and two teacups. He opened the can of tea leaves and put some tea leaves into the teapot.
Then, he picked up something made of bamboo from the side, opened the stopper, and poured hot water into the teapot.
"Brother Yi, what's this?" Li Chengqi saw that the water was still steaming. His gaze fell on Li Yi's things.
"It's a thermos bottle. Use glass to blow it. Put it in a mold. When there's air in the middle, blow the inner part, and the outer part will expand.
Leave an opening at the back. Then, like making a mirror, coat the inside with silver.
Then, just like making a light bulb, vacuum it and heat up the opening.
This way, the flask can be kept warm. Add a stopper and leave a pot of boiling water for a few hours. It'll still be hot. "
Li Yi explained how to make the flask. He used the techniques used to blow glass, make mirrors, and make light bulbs.
"You want to sell this thing?" Li Chengqi actually understood. The process was simple, but in fact, he couldn't make it.
"Of course, I'll sell it like a treasure. It's 200 yuan for one, and I'll replace and maintain it for free. It's just that … "Li Yi said that he wanted a high price.
If it's broken, put the pieces together and bring it to Zhuangzi. Zhuangzi will give you a new one.
If there's dirt inside, bring it to Zhuangzi, and Zhuangzi will clean it.
If the thermos stopper doesn't work, go directly to Zhuangzi to ask for it. There's no need to use the original one.
This is the service you can enjoy for 200,000 yuan. If you're unhappy, break it yourself. I'll change it for you.
"You should do the same without a light bulb. It's 100 yuan for one." Li Chengqi thought of another thing.
"Yes, I'll write in the newspaper tomorrow. It's so expensive. What if the glass breaks? Change it. "Li Yi readily agreed.
"How many thermos bottles do you have now? I'll take them with me and send them to Her Majesty. I want some in my house too. I'll help you promote it. "
Li Chengqi didn't hesitate. He knew the cost was very low, and he didn't want to resell it.
"I've just made it two days ago. Everyone is still familiar with it. There are only 160 qualified products, and more than 2,000 failed products."
Li Yi shrugged when he talked about the difficulty of making the bottle.
In the mold, the inner bladder was blowing against the outer bladder. If one didn't control it well, the inner bladder would stick together.
During the vacuum, the inner bladder would easily leak out from the heat and explode with a bang.
"Alright, I'll take all 160 bottles. You have to be gentle with them." Li Chengqi didn't care how many bottles were broken.
The craftsmen could gradually become proficient, and it was convenient to use them in winter. Otherwise, someone would have to watch over the fire and take care of the hot water.
In the afternoon, he sent people over to help carry the bottles. They had to use straw to cushion the bottles. They mustn't touch the bottles, especially at the mouth of the bottle.
He took away 1,000 stoppers. He had to test the stoppers after filling them with water.
In his hand was a thermos bottle filled with hot soup. He entered the palace and went straight to Baifu Hall.
In less than 15 minutes, Empress Wang arrived with her child. After a while, Li Longji arrived.
Li Longji received news that King Song should have come from Li Family Zhuangzi with many things.
When he arrived, the palace maids were carefully pouring hot water into a few thermos bottles.
The stoppers were soaked in water. After pouring the hot water, they put the stoppers back on.
"Third Brother, you're here. I'll show everyone this. This is the hot soup I poured into Zhuangzi at noon. It's been three hours since then."
Li Chengqi asked someone to bring five bowls. He pulled out the stoppers and poured the soup out.
When the soup was poured out, it was steaming hot.
"It's mushroom, wood ear, egg and sleeve toss soup. There's also lean meat and carrots."
Empress Wang's focus was different from the rest.
Li Longji touched the bowls and blew on the soup. The hot air blew on his face.
"It's hot. Even after three hours, it's still so hot."
Li Longji said as he blew on the soup. He put his mouth on the bowl and sucked before spitting it out on the floor. It was hot.
The palace maids hurried over to wipe the soup. The quick-witted eunuchs ran to fetch spoons.
The spoons were brought over and scalded with hot water. Everyone scooped the soup and blew on it.
"Uncle's soup is better than the one in the palace. In the future, if you want to drink soup, you can get it from Li Family Zhuangzi."
Empress Wang found the correct use of thermos bottles. They were used to store soup.
"The palace maids and eunuchs don't have to look after the hot water." Noble Consort Lu thought of the people who were working.
"Yes, I have to prepare a few more in the palace. However, they still have to look after the fire. They have to heat up their own food and keep warm. Am I right? "
Empress Wang turned to ask her son.
"Ah, ah, ah." The little boy stared at the soup bowl, as if he wanted to drink it too.
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