Datang romantic little landlord

When I think about my previous thoughts, making money is making money, but I will find many things for myself.He is not short of money now, so why do he find trouble for himself?

Li Wangyou wondered if his brain had been kicked by a donkey at that time, so he thought of collecting private money.

But it's really too late to say anything now, I have to continue with tears in my eyes because of my bad idea.

Li Wangyou had no choice but to go to Chang'an City again the next day to meet Li Er.

"Ziyou, tell me clearly today why you received so much private money from the Taiyuan Wang family?" Li Er couldn't wait to ask the question before Li Wangyou had finished performing the royal and ministerial ceremony.

This matter has been held in his mind for a few days, and he has discussed it with Mi Tuo and Empress Changsun, but no one knows what Li Wangyou's move is.

This made Li Er feel like a cat scratching his head, and he endured it for several days but did not see Li Wangyou enter the palace to solve his doubts.Yu Shinan's birthday yesterday, he finally caught Li Wangyou, how could he let him go.

"Hey, uncle, don't worry, let little nephew come slowly." Li Wangyou was not in a hurry, took a sip of tea, and then said under Li Er's glaring eyes: "Uncle, now my Tang Dynasty casts Kaiyuan every year. Tong Bao, don’t know geometry?”

"About 30 guan."

"That's why there is a shortage of copper coins in my court, so my uncle acquiesced to these aristocratic families to mint private money for circulation, right?" Li Wangyou continued to ask.

"That's right, that's exactly the case." Speaking of this matter, Li Er felt a little helpless.

Datang lacked copper coins, and he was naturally aware of this.

However, the household department and the general supervisor worked hard, and it was difficult to increase the number of copper coins minted, and casting copper coins actually cost a lot of money.

30 guan copper coins are minted every year. In fact, the expenditure of the court for this is also very scary, which also makes Li Er a headache.

This is also the reason why the Tang Dynasty would acquiesce in the circulation of private money.

The money shortage is not unique to the Tang Dynasty, it has been the case in all dynasties.In addition to the lack of copper, the main reason is the limitation of casting technology.

Since the aristocratic families of the Wang family in Taiyuan can cast private money, it means that the lack of copper is not the only reason.

In the Song Dynasty, the number of copper coins minted was ten times higher than that of the Tang Dynasty. This is the increase in the output of copper coins brought about by casting technology.

The process of casting copper coins in Huaxia is very cumbersome.

First of all, it is necessary to make the mother money for casting, put the mother money into the mold to tamp the mold, take out the mother money after the mold is completed, and then pour it with copper water.

After the copper liquid solidifies and cools down, open the sandbox and take out the poured copper coins.The poured copper coins are not scattered copper coins, but a whole string of copper money trees.

These copper coins need to be broken off one by one, and then uniformly hand-polished. After more than a dozen procedures, the final product is the Kaiyuan Tongbao that can be circulated.

Therefore, casting copper coins is very cumbersome and requires a large number of skilled craftsmen.Even so, the output of copper coins is difficult to increase.

The annual casting of copper coins is 30 guan, and the average daily output of copper coins is only more than 800 guan, but tens of thousands of craftsmen are needed.

Li Wangyou is naturally very aware of all this. He grinned, showing eight white teeth, and smiled at Li Er: "Uncle, if my nephew only needs dozens of craftsmen, I can turn these private money into official money." , and the Nissan is not less than Qianguan, is uncle interested?"

"What? Ziyou, what did you say?" Li Er suddenly got up when he heard this, and in a moment of excitement, even knocked over the tea on the table in front of him...

463 Cracking the Bone and Sucking the Marrow

Li Er was so excited because what Li Wangyou said was too incredible.

Dozens of craftsmen can make thousands of copper coins in one day, which is really amazingly efficient.

You know, there are nearly [-] craftsmen who will serve as supervisors and cast copper coins.If according to this ratio, more craftsmen are arranged to mint money, wouldn't Datang be able to solve the problem of money shortage?

"How much waste?" Li Er's voice trembled a little. Whether he could have enough copper coins was naturally very important to Datang.

"The consumption is very low, mainly the consumption of melting copper and the salary of the craftsman." Li Wangyou said with certainty.

"Really? Tell me clearly, how do you do it?"

Li Wangyou smiled, and asked Li Er first: "Uncle, do you still remember the waterwheel I built in Dingzhou Village?"

"Of course I remember that the waterwheel is even miraculous. It can lift water to a high place by itself without manpower for irrigation."

"Hehe, uncle, don't you think the waterwheel has other uses?"

Li Er was very puzzled and didn't understand the meaning of his words at all.

Li Wangyou took out a drawing that had been drawn in advance and presented it to Li Er: "Uncle, please see, if the bamboo tube for taking water from the waterwheel is removed and replaced with a baffle, the waterwheel will still rotate under the force of the water flow." interest."

"Yes, it is."

"So, you can use the power of the water to do many things. Uncle, please see here."

Li Wangyou pointed to a device drawn on the blueprint, and introduced: "My nephew designed a hydraulic forging hammer punching machine, which uses water to drive the water wheel to rotate. While the central axis of the water wheel is rotating, it can continuously make the forging machine The hammer is raised and lowered, and my nephew calls it a hydraulic forging hammer."

Li Er was still a little confused, so he looked at Li Wangyou blankly.

Li Wangyou can only complain in his heart about this, damn, this technological illiterate!There is no scientific awareness at all!

He also didn't go around in circles at all, and explained straight to the point: "Uncle, all the copper coins of my Tang Dynasty are minted, which takes time and effort. The hydraulic forging hammer designed by my nephew can directly stamp and beat the copper plates into coins one by one. !"

"Break copper plates into coins? How, how is this possible?" Li Er still couldn't believe it.

Li Wangyou was speechless, explaining technology with "illiterate" with his hands on his forehead, it was really too painful!

China has minted coins since ancient times, even in the Qing Dynasty.However, the West began to use stamping coinage during the Greco-Roman period.

Stamping coins not only have clear and vivid patterns, but also because of technical advantages, it is difficult for folks to imitate, and they have good anti-counterfeiting functions.

Of course, the more important thing is that the cost of stamping coins is much lower than that of casting coins, and the speed is fast. The coins are formed at one time, and there is no need for time-consuming and laborious follow-up processing.

It took Li Wangyou a lot of effort, comparing and drawing, to finally let Li Er understand the meaning of the drawing in front of him.

"Wonderful! It's really wonderful! If Ziyou's water conservancy forging, stamping and coining are used, the money shortage in the Tang Dynasty can be solved!" Li Erle narrowed his eyes, as if he had seen the treasury full of golden copper coins .

But he quickly came to his senses and looked at Li Wangyou suspiciously: "Ziyou, what does this have to do with you collecting so much private money?"

Li Wangyou resisted the urge to roll his eyes and could only explain patiently.

"Uncle, hehe, copper is needed to mint coins."

When he said this, Li Er suddenly realized.Datang's copper coins not only need copper, but also contain other metal components.The materials used in Kaiyuan in the early Tang Dynasty were bronze, cupronickel, and some other metals.

As for the private money, although the casting process is not as good as the official money, the materials used are very particular, almost the same as the official money.

If there is a new coinage method, these private money can be remelted and cast into official money for use.

The 300 million catties of private money that Li Wangyou exchanged from the Wang family in Taiyuan can be recast into 300 million catties of official money according to this method of stamping and coining.

That is equal to 60 guan!

Even if there are losses and expenses in the minting process, at least 50 copper coins worth [-] guan can be minted!