In the spring of the eighth year of China, Gan Ning took three fleets from Shanghai, crossed the sea directly to the east, and sailed to the Wa Kingdom.

At this time, the Wa Kingdom was basically similar to the wilderness. Ganning did not encounter any so-called "kamikaze", and he chose the time when storms rarely rose. His three fleets brought more than 100 logistics ships, but they were afraid that after they arrived overseas, they would have no food and no weapons to replenish. Therefore, when Gan Ning arrived at the Japanese country, the Japanese people saw the sails that covered the sky and the sun, and they were so frightened that they couldn't help themselves.

When Gan Ning came ashore with his army, they learned that he had come with hostility. The regime of the Wa Kingdom was similar to that of a large county in the Central Plains, and the army was only about 1,000 people. And only on the island of Kyushu in later generations, Shikoku, Honshu, and Hokkaido are basically indigenous and still live a primitive life.

Gan Ning led the army and destroyed the country very easily. Then Zhou Tai and Pan Zhang led the fleet to attack the other Shikoku islands and Honshu Island, Kyushu Island and these two islands are across the sea and can be easily found.

In less than half a year, Gan Ning cleared Mishima and found Hokkaido.

There are not many indigenous people in the four islands, and there are only tens of thousands of people scattered together.

In August, Gan Ning discovered silver mines in the Wa Kingdom, and immediately like Zhang Yi asked for technology, these silver mines were mined.

Zhang Yi naturally knew that the Wa Kingdom was rich in silver mines, and the reason why he did not let Gan Ning attack Sanhan, but attacked the Wa State first, was the idea of attacking these silver mines.

Zhang Yi has always wanted to reform the currency system, and although the currency system of copper coins is very good, it is full of drawbacks. Since the advent of iron, copper has been much less useful, and most of them are used to make copper or make copper coins, which is an effective use of copper.

There are too many disadvantages of the copper coin system, one is that it is easy to mint privately, and copper coins can be minted mainly if there is copper, and it is easy to imitate. Second, it is impossible to carry a large number of them, after all, the weight of copper coins is too heavy, and the business of Dazhuang is more barter, using the most primitive trading methods.

Zhang Yi wants to learn from the gold and silver coins and credit currencies of the West, but the gold reserves are enough, but the silver reserves are too small. China has not been a white-eyed source since ancient times, and there has been a large inflow of silver in all dynasties, all of which have been exchanged for exporting other commodities. Later, it seemed that there was a lot of silver, but once there was a large outflow of silver, there would be an economic crisis and social unrest.

There was a lot of silver in the Wa Kingdom, so Zhang Yi immediately sent people over, and even did not hesitate to issue an order to allow Gan Ning to use the Wa people to mine, as long as he could get a large amount of silver in a short time.

This is about Zhang Yi's currency reform, and it is also about China's long-term peace and stability, so Zhang Yi finally showed his long-hidden bloody fangs, and wanted to bite the Japanese country to death!

Gan Ning received Zhang Yi's order and immediately forcibly recruited the Japanese people to mine. Gan Ning was originally a murderous person, but he has improved a lot over the years because of military discipline. Now he has finally shown his bloodthirsty side, and all those who refuse to accept the conscription will be killed. After killing thousands, the Wa people succumbed and did not dare to put up any more resistance.

With Zhang Yi's technical support, the silver mine was finally excavated, and in February of the ninth year of China, silver production began. The technicians sent by Zhang Yi went directly to the Wa Kingdom to cut wood and smelt, and in March, the first ship of silver was transported to the port of Shanghai, a full 10,000 catties of silver.

Subsequently, three or five ships of silver were transported to Shanghai every month. With plenty of silver, Zhang Yi finally began to implement the new currency system.

He practiced steel mold coinage, minting three kinds of copper coins, two silver coins, and three gold coins.

There are three types of copper coins: small coins for one penny, medium coins for ten coins, and large coins for 100 coins. In order to be easy to carry, it is also a five-baht coin style with an outer circle and an inner square. However, these coins are not pure copper, but copper alloys, and the metals doped with small, medium, and large coins are different.

There are two types of silver coins: small coins of 1,000 yuan and large coins of 5,000 yuan. Silver coins are also alloyed, and the doped metals are different.

There are three types of gold coins: small coins that are 10,000 yuan, medium coins that are 100,000 yuan, and large coins that are millions of dollars. Gold coins are basically a manifestation of credit money, because no matter what metal is added, it cannot reach the value of millions of dollars.

However, these alloys are the strongest and most stable alloys that Zhang Yi has made in the workshop over the years, which are not easy to rust or break. You must know that the wear and tear of the five-baht coin will be very serious, and it may not be worn out in a few years or decades.

After researching these alloys, Zhang Yi deliberately asked the workshop to test them, and the alloys that did not reach a certain degree of hardness were not used at all, and he wanted to mint coins that could still be used for hundreds of thousands of years. Like later coins, he also spent time struck on the coins, changing the steel molds once a year.

The first batch of coins was introduced in the first month of the 10th year of China, and the first batch of Zhang Yi introduced a format coin worth one billion yuan to exchange for the old five-baht coin.

Because of its beautiful minting, the new coins were very popular with the people when they were launched. Copper coins and silver coins were quickly exchanged, but gold coins were only exchanged for small coins very well, and there was a lot of difference between medium and large coins, and people did not trust credit currency very much, after all, this was the first time that credit money appeared, and people needed a process of adaptation.

However, the reform of the new currency system has been unanimously praised by the top and bottom, and it is considered to be much stronger than the five-baht coin. This is also related to Zhang Yi's ban on privately minting five-baht coins for a long time, and he has long been prepared for the currency reform.

You must know that before Zhang Yi, the Han family did not prohibit the private minting of five-baht coins, but this kind of thing is not only forbidden. Zhang Yi used tough measures in this regard, and anyone who dared to challenge had no good end, either confiscating property or arresting the whole family for labor reform.

As a result of the reform of the currency system, other forms of money, such as cloth, were successfully incorporated into the category of commodities and disappeared from the monetary system. The single currency allowed Zhang Yi to complete the commercial integration of the whole country, making business development easier.

Zhang Yi has also successfully grasped the lifeblood of the country through currency reform, and as long as he has maintained the right to mint currency, there will be no unsolvable things in the future. Why is the dominance of the modern state so solid? Part of the reason for this is the right to mint money, which can hold a lot of voice.

After the currency reform, Zhang Yi's millennium dynasty plan achieved the second step, and then he will start to implement the third step.

The third step is to unify the whole country and establish a militarily strong central dynasty, and after completing the third part, the fourth step can begin.