In ancient times, coins were minted mainly by the fan casting method and the sand turning method. The Qian Fan is composed of two fans, the surface and the back, and the pouring channel and the Qian model cavity (mold cavity) have been designed in the fan cavity. The two fans are put together, the copper liquid is injected from the pouring channel, and the cast billet is taken out after cooling, and then processed into a finished product. This method of minting coins is the Fan minting method. The key to the quality of the resulting coin is the accuracy of the coin. Therefore, the main symbol of the fan casting method is the money fan.

Sand turning method, that is, mother money sand turning method. The whole process of coinage is: making money mold sand, using the mother money impression, bundling the sand mold, melting the copper alloy, pouring, opening the sand mold, and trimming the coin. It can be seen that the mother money sand turning method does not deviate from the basic principle of the fan casting method, but only replaces the money mold in the money fan with the mother money, and replaces the fan with sand. Therefore, the main sign of sand turning method is the mother money.

The Tang Dynasty has implemented the method of turning sand and casting money, and the efficiency of casting money has been greatly improved.

Before the Tang Dynasty, there was no standard for the fineness of copper coins. In the Han Dynasty, the method of "casting money from the mountain" was also popular, that is, using the raw copper mined from the mine to cast money. That is to say, there is no need to pull the copper ingots from the mine to the capital, and they can be cast directly there.

However, in the Tang Dynasty, a certain system began to be stipulated for the fineness of copper coins, such as the composition of copper coins in the Tianbao period: copper 83.32, white ash 14.56, black tin 2.12, which is an obvious progress in the coinage system.

At that time, a total of 99 furnaces were set up in the country to mint money, and each furnace was minted with 3,300 yuan, and the annual amount of money was more than 327,000 yuan.

But when it came to Li Ji, the years of war had long been abandoned, and now there were few stoves left that could smoke, and more of them were privately minted bad money.

Although the imperial court continued to issue laws and regulations to crack down on private coinage and indiscriminate minting, and to prohibit the use of bad money, due to the serious shortage of copper coins, the value of the currency continued to rise and firm, and the private and indiscriminate minting were profitable, so the results were not ideal.

Coupled with the fact that no one could control the feudal towns, these feudal lords with mines in their homes began to mint their own evil money, which for a while caused a flood of different currencies in the market.

Bad money refers to money of inferior quality. These coins were crudely made, and some even had illegible handwriting on them, and it was urgent for the imperial court to create a unified monetary system.

At present, the supply of copper coins in the market is extremely short, and Li Ji wants to seize this opportunity to defeat the feudal towns with monetary policy and have a war without gunpowder.

Sometimes the economic war is more powerful than the real battlefield, and he can directly destroy the feudal town. To put it bluntly, fighting a war is to burn money, and whoever has more money will have a greater chance of winning.

In the Ming'an Palace, Li Ji summoned the bad handsome Fan Yao and the household servant Zhang Wenwei.

"This is Yang Shihou's table." Li Ji pointed to the music on the table.

Fan Yao and Zhang Wenwei glanced at each other, and both of them were overjoyed.

"Congratulations to Your Majesty, congratulations to Your Majesty for another good general." Fan Yao hugged his fists.

Zhang Wenwei was also overjoyed: "Yang Shihou came to return to the imperial court, and our power has grown again."

Li Ji was not happy: "Don't be in a hurry to be happy first, although Yang Shihou occupies Weizhou and returns to Shun, he does not agree with me to send officials to Weizhou." He just took a fancy to my status as the Tang Dynasty, and the assassin history and county orders I sent to Weizhou were all sent back by him in the name that there were no temporary officials in Weizhou. ”

Fan Yao and Zhang Wenwei were stunned again, what kind of obedience is this. He refused to agree to the officials sent to the local area by the imperial court, and to put it bluntly, Yang Shihou still wanted to establish himself as the king.

"Your Majesty, are we going to send troops to suppress him?" Fan Yao asked.

Since Yang Shihou broke away from Li Keyong, Shangshu was willing to submit to the imperial court, but he did not agree to the imperial court sending officials to station. Then Yang Shihou wants to be the king of Weizhou by himself like other feudal towns.

Li Ji shook his head: "No, there is no change in the feudal towns at the moment." I was afraid that moving Yang Shihou would cause a chain reaction, and since he was willing to surrender the table, I also promised him on the face that I would pass on the decree and make Yang Shihou the envoy of Weizhou Festival and the assassin of Weizhou. ”

Zhang Wenwei arched his hand: "Your Majesty, the minister thinks it is impossible." This assassination history also gave him whether this move would make the feudal town look down on the imperial court too much. ”

Li Ji smiled: "I just want the vassal kings to despise the imperial court, and now I don't want to go to war, and I don't have the ability to go to war, so I can only raise them first." When it's time to pay it back, I will let them pay it back with interest. ”

Zhang Wenwei didn't understand, he glanced at Fan Yao. Fan Yao shook his head lightly, signaling that he didn't need to ask again, he admired Li Ji very much now. The emperor did this for his own reasons.

"I recruited you two here today for something else, Zhang Wenwei. I ask you, how is the preparation of the Beijing Minthouse? ”

As soon as he heard this, Zhang Wenwei hurriedly said: "Everything is ready, the furnace, mother money, model model, black tin, white wax, etc., are all available, just waiting for the copper ingot."

There was a smile on the corner of Li Ji's mouth: "The copper ingots transported from Huangling Mountain have reached the south gate, and there are twenty-seven carts."

Fan Yao and Zhang Wenwei stood up suddenly, and the two of them were surprised and delighted. Twenty-seven cars, it's only been a few days, how can Huangling Mountain produce copper so fast.

The reserves of copper mines in Huangling Mountain are amazing, and when Pan Da was stunned, there was already a casting equipment left by Zhu Yougong at that time, so the copper production speed was very fast.

"So, we can print money?" Zhang Wenwei's breathing became a little short, this is really a happy event in the world.

Li Ji nodded, and he said to Fan Yao, "Fan Yao, pass on my will." You can send bad people to various feudal towns to spread the message. From now on, I will announce to the world: all private coins minted in various places will not be recognized by the imperial court, and the imperial court will mint Kaiyuan Tongbao as the official currency. ”

Kaiyuan Tongbao ran through the mainstream currency of the entire Tang Dynasty, although Tang Gaozong minted Qianfeng Quanbao, Tang Suzong minted Qianyuan Heavy Treasure, Tang Dynasty Zong began to cast Dali Yuanbao, but it did not become popular.

In order to save costs, both technology and raw materials are mostly bad money.

Due to the times of war, civil strife, and economic depression, coins were minted to become lighter, thinner, of inferior quality, and of inferior workmanship. This was also a helpless move by the empty treasury of the regime at that time. Once this kind of inferior money appears, it will be inflationary, and the people's lives will be seriously affected, and the people call this kind of money "bad money".

Some feudal towns even minted a batch of small five coins without words on the front and back, the coins are very thin and light, the middle hole is very large, the actual amount of copper is very small, there is no edge outline, and the five small five coins only have the size of a Kaiyuan Tongbao.

Although the feudal towns are no longer controlled by the imperial court, there is no way to use the Kaiyuan Tongbao feudal towns that are common to the entire Tang Empire. Anyway, the amount of copper produced by yourself is low enough to cost, and there is no such fine process.

Once the imperial court issued this decree, who would be willing to use the coins minted privately by the feudal towns. Neither businessmen nor ordinary people will be willing to trade with these evil money again.

Fan Yao always thought that he was very smart, but this emperor seemed to know everything and was a hundred times better than himself. No wonder Mo Long will resign, he knelt on the ground excitedly and bowed: "Minister, obey the order!"

PS: Readers, why have I rarely seen you bubbling lately. A little flustered, can you tell me that you're still paying attention to this book.