Otaku Engineer in Great Tang Dynasty

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"Hey, Xiao Ke! You said it's really troublesome to use these coins. You need one or two for a lunch, and you have to take a few coins for each meal. It would be great if the canteen of the academy could use golden beans. Take it easy!"

Cheng Chumo held a copper coin box and couldn't help saying.

The Cheng family has made a lot of profits due to the cooperation with Li Zexuan to open a wine shop. Cheng Chumo now has more pocket money than before, and he is considered a rich man, otherwise he would not say such words!

Li Ke was stunned for a moment, then smiled and said, "Ugly cow, if you go to the cafeteria to eat with golden beans, you dare to give it, but others don't dare to accept it, because it takes half a day to refund you!"

"Hey! Xiao Ke, what you said makes sense!"

Cheng Lu thought for a while, and smiled embarrassedly.

Li Ke's face was calm, but his heart fell into deep thought. During his "internship" at the Nuan Tang Foundation last year, he once mentioned to Li Zexuan that copper coins were inconvenient to carry. At that time, Li Zexuan encouraged him to say that people from Yanhuang Academy If he can successfully solve the problem of inconvenient carrying of copper coins, he will create an era and be famous in history!

Since then, he has been pondering this issue in his heart. Today, Cheng Chumo's indifferent words have brought him a hint of inspiration. Maybe this can be done...

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In the next few days, Li Ke seemed to follow the devil. Every day in addition to class, he wrote and drew in a small notebook. Even on weekends, students could often see him in the classroom. , Everyone was not surprised, because they all thought that Li Ke was studying hard! After all, in the final exam last time, Li Ke entered the top three for the first time, beating Li Tai for the first time. If you want to stabilize this result, you have to work harder!

But the truth is not at all what everyone thinks!

On this day, Li Ke came to Li Zexuan's office.

"Master, I have something to look for you!"

Li Ke knocked on the door, looked at Li Zexuan and said.

"Well! Sit down and talk!"

Li Zexuan glanced at Li Ke, especially the booklet that the child was holding, then pointed to the sofa opposite and smiled.

"Thank you, Chief!"

Li Ke thanked him and sat on the opposite sofa. In other words, Li Zexuan is the only place in the entire Tang Dynasty who can enjoy such a soft sofa.

Sitting on the sofa with half of his buttocks, Li Ke organized some words in his mind, and then said, "Shan Chang, I have thought of a solution to the inconvenience of carrying copper coins!"

"Huh? Come and listen!"

Li Zexuan glanced at Li Ke in surprise, and quickly put down a book in his hand, posing as if he was listening.

Li Ke was a little nervous in his heart, but he still mustered up his courage and said: "Shan Chang, I think that if we want to solve the problem of inconvenience, we can set up a special department in the academy to provide copper money exchange services for students, that is to say, students can Take the copper coins and exchange them for paper vouchers of corresponding value in the academy. With this voucher, everyone can go to the cafeteria to eat, or go to Gujia's small shop to buy things. Any place where copper coins are used in the academy can be used. certificate instead.

And every once in a while, people like Gujia Xiaodian can take the vouchers they received and come to the academy to exchange them for copper coins. In this way, everyone will not lose money, and the transaction process will be much more convenient! Shan... Chief, what do you think of this method? "

But it was Li Ke who talked for a long time, but he didn't see Li Zexuan answering, he suddenly asked a little vacantly.

"Haha! Good! Very good!"

Li Zexuan stood up suddenly, rubbed his palms and laughed loudly, at this moment he just wanted to say, show! Tianxiu! Isn't what Li Ke said just now the prototype of banknotes or banknotes? His constant guidance to this child has finally paid off!

"Xiao Ke, you can think of this, I am very pleased for the teacher, but there are some problems in it, you need to think about it in advance!"

Li Zexuan first affirmed Li Ke's idea, and then pulled Li Ke back to reality from the cloud.

"Master, what's the problem?"

Li Ke stared at Li Zexuan without blinking and asked.

Li Zexuan smiled, stretched out a finger, and said, "First, you must first find a way to make the students believe in your certificate and be willing to exchange copper coins for it. After all, others have never seen your certificate before. Why would you want to exchange your money for a piece of paper with you?

Second, when the students believe in you and are willing to exchange copper coins for vouchers, you have to find a way to get the voucher recipients to believe that your voucher can be exchanged for copper coins, because the ultimate purpose of business is to make money. If only a few sheets of paper are earned in the end, who would want to do it? You don't need to worry about it in the cafeteria, but in Gu Xiaomao's side, it is impossible for a teacher to force him, you have to do it yourself;

Third, and most importantly, you have to consider whether someone will copy your certificate in the future and use it to make huge profits! We Yanhuang Academy say that it is not big, but it is not small. If someone forges the certificate, then the loss we suffer will definitely not be underestimated! "

While listening, Li Ke wrote down all the points that Li Zexuan said in the booklet. After Li Zexuan finished speaking, he was silent for a while, got up and said:

"Thank you for your teaching! Regarding the first and second points, the students will try their best to convince the students and the businessmen of the academy to believe in this certificate. As for the third point, the students think about

, you can put the pattern on this certificate, the design is more complicated, and then stamp your personal seal on it. I'm afraid others are not very good at imitating it, right? "

Li Zexuan shook his head and said, "Who said seals can't be imitated? But if your certificate is only used in the academy, it's not unreasonable to do so! But I hope that this kind of transaction certificate can be extended to the public in the future! So, Xiao Ke, you either don't do it, if you do it, then do it impeccably! It will be difficult for everyone in the world to imitate it!"

Li Ke's eyes widened, and he said incredulously: "Shan Chang, you... do you want the common people and merchants to trade with this kind of voucher?"

He would never have thought that Li Zexuan would play such a big game. If the people could also use his credentials, wouldn't he have created a new type of currency?

Thinking of this, Li Ke's breathing became a little faster.

Seeing Li Ke's reaction, Li Zexuan smiled lightly: "Why not? Remember what I told you two months ago? If you can successfully solve the problem of inconvenience of carrying copper coins, then you will create a new one. The era, and the name will remain in the history! If you don't allow everyone in the world to use this kind of certificate, how can you be famous in the history?"

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