Abeda Nakamaro pondered for a moment. "You mean burnt lime?"
"Yes, it's used for sterilization." Takagi Junichiro gestured.
"Go back and try it. We have burnt lime in our country. Why is it called quicklime?" Abeda Nakamaro was not used to the question.
"Because it can also become mature lime. In some aspects, their uses overlap, but in some aspects, they are different." Takagi Junichiro learned a lot from the newspaper.
"I don't know if I can learn how to make exchange coupons and use it to print money." Abeda Nakamaro knew what exchange coupons were.
They were called exchange coupons in name, but in fact, they were currency.
What he was most worried about was that the people were not willing to use copper coins. There were many small countries in the country.
Some places did not produce copper. The capital of Ping Cheng made copper coins, but the people in other places decided that copper coins were useless.
They could not compare to how much the things were worth.
He knew how much rice or cloth could be exchanged for with ten eggs.
Ten eggs could be exchanged for a few copper coins. What if he could not buy the rice and cloth with copper coins?
The things he exchanged for were what he needed. He did not need copper. Copper could not be eaten or worn.
Then he thought of a way to allow people with official positions to be promoted with money.
The officials had to save their own money in copper coins. They would donate a sum and give it to different officials according to the amount.
Those who did not have official positions could donate 5,000 copper coins to get an official position.
The officials' salaries were also paid with copper coins. They could use copper coins to buy things.
However, it could only be circulated in Ping Cheng and Gyeonggi Province. People outside did not need it.
Abeda Nakamaro and the others could not figure it out. Why? The people of the Tang dynasty liked to use copper coins. There were also people who made evil money.
In their own country, what was the difference?
With a stomach full of doubts, they continued to shop in the East Market.
Feeling the prosperity of the Tang dynasty, they envied the lives of the people of the Tang dynasty.
There were too many things in the market. It was a dazzling lineup.
The people took out money and looked for money. Even the blind used exchange coupons to buy things.
There were blind spots on the exchange coupons. According to the method of making watermarks, the blind spots of different denominations were different.
According to the size and feel of the exchange coupons, as long as it was new, the blind could distinguish it.
As for the specific purchase, there was no need for the blind to distinguish. There were enthusiastic people next to them to help.
When the seller met a blind person, not only did he not dare to give the poor goods, he also had to choose the good ones. If he gave a little more, he was afraid that someone would report it to the authorities.
"Big brother, the stall owner is nice to meet you. I'll give you two extra coins of meat." The envoy from the Japanese Empire was looking at a man who was helping a blind man buy things.
Even if he gave an extra two coins, it was still weight. It was ten coins worth one tael, not the face value of a copper coin.
"Hey, hehe!" The blind man carefully pocketed the money, picked up the meat, tapped the ground with a stick, and left.
Immediately, some kind-hearted people followed and helped the man in his thirties to walk home.
The Japanese Empire's envoy sighed with emotion at the customs of the Tang dynasty's Imperial Magistrate. When he saw a stall selling fried sandwiches, he took out two copper coins from his sleeve.
He walked over and handed over the copper coins. "Give me a roll."
The stall owner looked at the money he was holding and carefully identified it. "I'm not selling. I don't recognize it."
"The money of Japan is the same as that of the Kaiyuan Tongbao of the Tang dynasty." Shinbei Shimodo gestured at him.
The stall owner shook his head. "Even so, I don't want it. It doesn't feel as important as Kai Yuan Tongbao."
"I'll give you one extra coin. Three coins for two coins. I'm a Japanese envoy. "Shinbei Shimodo was depressed and added another copper coin.
"A Japanese envoy can't buy things with less money, unless you're Li Dongzhu. I'll give it to you for free." The stall owner said as he took the money and weighed it in his hand.
He nodded. "I'll sell it to you. After all, you're a Japanese envoy."
After he finished speaking, he put away the money and gestured to the woman next to him to give Shinbei Shimodo a roll of sandwiches.
The woman carefully selected a sanzi that looked bigger, but in fact, the weight of the sanzi was already weighed. She handed it over to Shinbei.
Shinbei Shimodo was in a good mood. The sandwiches looked bigger.
He broke off a piece and put it in his mouth. It was crispy.
Fujiwara Ma Yang next to him also broke off a piece. "I really envy them. They can spend their money anywhere."
"Li Yi is resourceful. Maybe he knows the reason and can solve our domestic problems." Takagi Junichiro thought of a solution.
It was said that when the prime minister encountered difficulties, he would go to the Li Family Zhuangzi for help. The students of the Li Family Zhuangzi were doing well in the county and village.
This showed that the master was capable. If he asked why the copper coins were not circulating in Japan, would Li Yi be able to give him an idea?
… …
Bi Goo was already helping Takagi Junichiro ask. When the Japanese Empire's envoys entered the Tang Dynasty, in addition to tributes, they also brought a large number of products from the Japanese Empire.
This included silver. Silver was used in manufacturing and opening of the Tang dynasty. Later, it was canceled because there was not enough silver.
The amount of silver in the Tang dynasty was even less than the amount of gold. There were no large mines.
Silver was a luxury item in the Tang dynasty. It was used to make bronze mirrors and jewelry.
Bronze mirrors with a little silver were similar to glass mirrors. It was just that the silver would be wiped out easily.
"Do you want to collect taxes from them?" Bi Goo carefully stood at the entrance of a workshop and watched Li Yi work.
Li Yi was making the litmus paper. This was a crucial step and no one was allowed to disturb him.
After Bi Goo finished speaking, Li Yi turned his head and glared at him. Bi Goo quickly shut his mouth.
"I have sulfuric acid and caustic soda here. If there is a problem, it will be over. Wait for me. "
Li Yi continued working. The sulfuric acid was added to red paper to test for alkalinity. The second paper was added to caustic soda to test for acidity.
People always made mistakes when judging the pH of the soil based on their experience. Li Yi took some time to collect the litmus. After two days of processing, the finished product was produced today.
It could be used when it was dry. However, he needed a comparison. He had to mix the colors himself.
After half an hour, the craftsmen who were learning understood.
Li Yi breathed a sigh of relief. He walked out and asked the craftsmen to mass produce. If there was not enough litmus, he would collect more.
Litmus was now a medicine. It was relatively easy to find and was not valuable. Children could pick a lot with a small shovel.
"With the test paper, people have more choices when farming. They can easily know the situation of their land, what to add to neutralize it, or what kind of crops to plant."
Li Yi had a small bamboo piece in his hand. There were two strips of litmus paper on top of it.
"Chemistry, right?" Bi Goo did not understand the principle at all. He only knew that it was not a trivial matter.
"Yes, and if I don't tell others, no one will be able to make it for hundreds of years."
Li Yi was not modest at all. He did not intend to teach the litmus paper to outsiders.
He would sell the test paper and comparison table for the imperial court to buy.
"You want to give it to the people?" Bi Goo heard that it was related to farming and thought that Li Yi was giving it to them.
"The imperial court will pay for it. A pack of 100, plus two comparison tables. If one of them is lost or damaged, there will be a backup.
The government will take it and distribute it to the people. The people will look at their own fields and then take it back to the government office to compare.
A pack is 20. If you don't need the comparison table in the future, 19. What do you think? "
Li Yi had already planned it out. Selling and farming were the imperial court's responsibilities.
"No, how much does it cost?" Bi Goo refused. He felt that he would be at a disadvantage if he bought it.
"Old Bi, don't always think about the cost of the materials. Don't you think about the cost of the technology? I have lived frugally and after hundreds of thousands of attempts, I invented … … "
"I don't believe you. You should have made it directly. At most, you would have failed once or twice." Bi Goo still refused.
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