Following the Eastern Roman Empire and the Sassanid Dynasty of the Persian Empire, some other small countries in Obaro also sent missions, and even the Vandal Kingdom located on the Mediterranean coast of North Africa sent a mission.

If it weren't for Geseric, the Battle of Chalons might not have been fought, and it was because of it that Attila and Aetius fought each other. Although Qin Dong doesn't like people like Gaseric, it doesn't prevent him from appreciating Gaiseric, this is a capable person, in the end, everyone is a fellow traveler, and he will not compromise the means to achieve the goal.

After sending off batch after batch of missions, Qin Dong finally had time to devote all his attention to military and political affairs, he first issued an administrative order to promote the iron plough and hoe and other cultivation tools to all areas where he could control, and asked local officials at all levels to organize farmers to open up wasteland after the beginning of spring, build water conservancy facilities, clean up rivers and canals near rivers, and divert water to irrigate farmlandThe land obtained belongs to oneself, and the maximum amount of land can be cultivated is thirty acres, but it must be filed with the local town-level government office, otherwise its ownership will not be recognized, and there is no need to pay taxes to the local government office for the first three years.

The purpose of encouraging farming is to stabilize farmers and allow more people to engage in agricultural production, although animal husbandry can produce a large amount of meat, but the population that can be supported by animal husbandry is limited. Otherwise, why is it that almost all nomadic peoples are sparsely populated? And every once in a while, you have to migrate, looking for good aquatic plants to stop. If you want to feed a larger population, you have to cultivate a lot. Reclaim wasteland and improve the efficiency of land use.

Encouraging farming, popularizing the use of agricultural tools, building water conservancy facilities, increasing the infrastructure construction of cities and towns, etc., all of these things have precedents to follow, and there is already experience, so there is no need to worry too much about doing it, Qin Dong now has the most concerned problem, that is, economic development.

Economic development has now hit a bottleneck, after investigation. Qin Dong found the problem, that is, he did not have his own monetary system.

For a long time, the Xiongnu Empire, except for parts of the south, used the gold, silver and copper coins of the Roman Empire for market transactions. Most of the rest of the country is still bartering. Bartering is the most primitive way of trading, face-to-face to obtain goods or food, each taking what they need, and benefiting each other. In most cases, this type of trading is not an equivalent transaction.

In the past, the territory area of Qin Dongkong zhì was small. The drawbacks of this barter trade have not yet been seen, but now the territory area of Qin Dongkong has expanded dozens of times in the past two years, and the number of people in the territory has also increased dozens of times.

Even in regions where the currency of the Roman Empire was traded, the economy of the Western Roman Empire was declining. The quality of the minted currency is getting lower and lower, and the depreciation is very great. The populace were not fools, so the value of the Roman Empire's currency became lower and lower, and of course its purchases fell a lot.

Qin Dong has realized that he must have his own monetary system, otherwise the people's hard work all year round may not be able to exchange for a bag of grain, and there is a great risk in using the currency of the Roman Empire, the whole economy is controlled by the Roman Empire, as long as there are people in the upper echelons of the Roman Empire who understand the economy, they can completely manipulate the economy of the Xiongnu Empire.

Qin Dong didn't want his life to be written in the hands of others, there was no way before, he didn't have sufficient gold reserves in his hands, and he didn't have the talent to mint coins, but now it's different, since he supported Enek as the big single Yu, the territory that can directly control zhì has increased several times at once, occupying the name of the Xiongnu royal court, and the prestige is great, many talents have gathered in Saidika, talents from all walks of life, and some people have found several gold and silver mines in Enek's former territory, In addition, there are several copper mines in his own former territory, all of which are abundant and easy to mine. As a result, a large amount of gold, silver, copper and other metals needed to establish a monetary system are available, and there are also technicians to mint coins, and after a period of accumulation, the reserves of gold, silver, copper and other metals can start to mint coins.

Qin Dong ordered people to find technicians and craftsmen who minted coins, and let them train intensively for a period of time, mainly to establish the rules for them to mint coins, and at the same time, from a large number of painting and engraving technicians to collect coin design patterns, when they learned that the regent wanted to collect coin design patterns, many painting and engraving technicians have designed their own works and presented them to the regent's palace for Qin Dong to choose.

After more than a month of solicitation, more than 300 design plans were collected in the Regent's Palace, Qin Dong specially organized officials to select these design plans, eliminate some unknown plans, and then eliminate some plans that are not exquisite enough and have no meaning, after layers of screening, a total of ten design plans were sent to Qin Dong's table for him to choose.

After Qin Dong looked at these ten design plans, he had to marvel at the wisdom of the ancients, he selected three copies from these ten design plans, and then carefully observed these three design plans, the first design plan: the gold coin is round, the obverse is a full-breasted bust of Enek, the back is an Ori Latin lettering, and there are garlands on both sides. The silver coin is also round, with a bust of Qin Dong on the obverse and a Latin inscription on the reverse. The same is true for copper coins.

The second design is that the gold coin is also circular, with a portrait of the city of Saidika on the obverse and a Latin inscription of Ori on the obverse, a bust of Enéke on the obverse and a Latin inscription on the reverse. The same is true for copper coins.

The third design: gold, silver, and copper coins are also round, and unlike the first two designs, the copper coins have a small square hole in the middle. The gold coin has Enéke's head on the obverse and one tael of traditional Chinese characters on the reverse, the silver coin has the obverse of Qin Dong's head and one tael of traditional Chinese characters on the reverse, and the copper coin has four traditional Chinese characters for "Regent Tongbao" on both sides of the front and back, with a square hole in the middle.

Qin Dong still didn't feel very satisfied after carefully reading these three design plans, he thought for a moment and extracted the essence from these three design plans, and finally formed such a plan: the gold coin is round and solid, weighing about 15 grams, with Enek's head on the front and traditional Chinese characters on the back, surrounded by ears of wheat on both sides. The silver coin is also round and solid, weighing about 30 grams, the obverse is a bust of Qin Dong's military costume, the reverse is a one-yuan Chinese character in traditional Chinese characters, surrounded by ears of wheat on both sides, the copper coin is round on the outside and hollow on the inside, weighing about 10 grams, and there are four traditional Chinese characters on both sides of the words "Regent Tongbao", also surrounded by ears of wheat.

The weight ratio of these three coins is determined by Qin Dong according to the value of gold, silver and copper in the market during this period, in the casting forage, the gold coin is minted with the maximum purity of gold, and the same is true for silver coins, but the material of copper coins is worse, copper coins are mixed with copper and lead according to a certain ratio to ensure that copper coins are used for a long time and are not easy to rust.

In the end, the ratio of these three coins to huàn is: 1 gold coin = 10 silver coins, 1 silver coin = 100 copper coins. This ratio is also the reason why Qin Dong set the weight of a gold coin at 15 grams, the weight of a silver coin at 30 grams, and the weight of a copper coin at 10 grams, that is, to make 1 gold coin can be exchanged for huàn 10 silver coins, and 1 silver coin can be exchanged for huàn 100 copper coins.

After determining the design plan, Qin Dong immediately asked the officials to discuss, and tried his best to cast the samples to see the fineness of the coins, as for the specific casting methods, naturally those casting craftsmen and technicians will do it, and there are special coin minting officials to supervise it.

In terms of the casting method of coins, there were generally two casting methods in ancient times, the first was the fan casting method, and the second was the sand turning method.

Fan casting methodThe main tool for casting money is the hard money fan. According to the different functions of the money fan, it can be divided into the sub-fan, the mother fan, the ancestral fan and the money fan, and according to the different materials of the money fan, it can be divided into stone fan, pottery fan, copper fan, iron fan, lead fan, etc. Zifan: refers to the money fan that is directly used to cast coins. A concave cavity for coins to be minted is prefabricated on the model, usually with two pieces on the front and back. The most primitive sub-model cavities were carved directly on the body by the workers, such as the stone fan and the early clay pottery fan. Later, it developed into printing and reproducing sub-models with models, and the reproduced sub-models include clay pottery models, copper models, iron models and so on. Mother model: refers to the mold used to reproduce the child model. The convex model of the coin to be minted is usually paired in two pieces, including ceramic model, copper model and lead model, most of which are reproduced from a unified mold, and some of them are directly engraved and processed. Zufan: refers to the mold used to reproduce the mother model, and the cavity of the copy mother model is prefabricated on the fan body. To reproduce a mother fan, there must be at least two pieces of matching ancestral fan to be used together, and most of the cavities of the ancestral fan are directly engraved by hand. Money model: refers to a kind of mold used to print the convex money model of the clay mother fan, and there are 1 or 2 coins to be minted on the model. Most of the money samples are made of copper, which is reproduced from a special ancestral fan.

The main difference between the sand turning method and the fan method is that there has been a fundamental change in the method of prefabricating the cavity of the coin. It is no longer based on the hard fan body for the production of the cavity, but the use of clay pottery or molding sand, etc., appropriately mixed with other mixtures as the cohesive material, the coagulation material is placed in the upper and lower two frames to form a pair of "sand boxes", the coin mold - the mother coin, in the sand box printed out of the coin cavity, launder, pouring mouth, often the upper and lower sand boxes are printed in half, after printing out the mother money, the upper and lower sand boxes are combined as they are, in order to complete the coin cavity making process. It is also commonly used to use the vertical stacking method similar to Fan Casting, where the sand boxes of multiple frames of prefabricated coin cavities are overlapped, and their pouring ports are connected to complete the casting process of multiple frames by injecting molten metal at one time.

During this period, the process of sand casting money has not yet appeared, so it can only use the fan casting method to cast money, which is naturally technically backward than the sand turning method. (To be continued......)