Jingzhou was covered with war clouds, the Qingzhou scholars gradually moved away, and the imperial capital was turbulent, but all this did not affect Yang Yi's mood.

Now Yang Yi is inspecting the shipyard, and now along Gaoyang County to Wuqing, digging a canal to lead directly to Shaohai (Bohai Sea), along the way the water is endless, with various workshops, such as the Mint based on Wanjun hydraulic press.

The official currency used by the Han Dynasty today is five baht coins, and in the early Han Dynasty, the Qin system of half taels was still used.

Folk also appeared to cut the edge of the half tael, that is, some unscrupulous businessmen will be the Qin system of half a tael, with scissors to cut a circle, seven to eight half taels, you can cut a half tael of bronze, with the cut copper and then cast half a tael, in this way, resulting in currency imbalance, to the economy at that time caused a time of chaos, so that the beginning of the appearance of the cut edge half two a lot, after Lu Hou found the problem, actively advocated the currency reform, and personally participated in the design of the coin, in order to prevent the trimming, on the basis of the square hole round money, and added the perimeter, set five baht as the weight unit, Han five baht was born.

The five-baht coin is a major turning point in the monetary history of the Qin and Han dynasties, realizing the centralization and unification of the currency minting rights of the Han Dynasty.

In view of the serious consequences such as the chaos of the currency system and the rebellion of Wu and Chu caused by the loss of control of coinage, Emperor Wu carried out six currency reforms during his reign, so that the currency problem that had not been solved since the beginning of the Han Dynasty was relatively completely solved.

Emperor Wu Jianyuan in the first year of the three-baht coin, as heavy as its text, this is a measure to restore the nominal value of copper coinage consistent with the legal weight, but because the three-baht coin and the four-coin weight of half two coins are used equally, it led to the prevalence of theft, so in the spring of the fifth year of Jianyuan, "three baht coins are abolished, and half two coins are used".

In the fourth year of Emperor Wu's reign, he minted three baht coins and minted leather coins and platinum (silver) coins, and also issued a capital order for those who steal money; Emperor Wu Yuanjia began to carry out the fourth currency reform in the fifth year; This reform is only to "abolish the three-baht coin and recast the five-baht coin". There are certain regulations on the shape of the five-baht coin, and the "five-baht" money has been used since then.

After Wang Mang usurped the Han Dynasty, changed the name of the country to the new dynasty, Wang Mang promulgated a series of decrees to change the currency system, prohibiting five baht, making new money, and successively stipulating more than 30 kinds of currency, the form imitates the Zhou system, the level is huge, the use is inconvenient, the large amount of currency of insufficient value is overflowing, and the law is enforced, resulting in great chaos in the economy, and it will soon fail.

Due to Wang Mang's ban on Han, a large number of Han five baht were destroyed in a centralized manner, Wang Mang ordered that anyone who used five baht or collected five baht would be punished with capital punishment and whipping.

In the sixteenth year of the Han Dynasty, Emperor Guangwu re-implemented the five-baht coin system that had been interrupted by Wang Mang's reform, which played a positive role in the recovery of the social economy.

On the eve of the birth of the five-baht coin, because the half tael coin was on the verge of collapse, the market was in chaos, and the governments at all levels competed with the merchants and the people for profit, and they were desperately trying to mint money, which made the currency over-inflated, the purchasing power of the coin fell rapidly, and the price soared.

Unable to survive, the people gave up production one after another, went into exile, and sold their labor to make ends meet; Or take a risk, join the ranks of private casting, and try to make huge profits. In the early years of Emperor Wu, nearly 10,000 people died due to private casting, and the number of people who died in private fights and committed suicide in fear of crime cannot be counted, which shows that the problem is very serious.

Therefore, in the fifth year of Emperor Wu's Yuanzhen, the edict ordered each county to cast five baht money, called the county five baht, also called the five baht of Yuanjia, the money is "five baht", the small seal book, the bare back, the front has a wheel without Guo, and the back is a wheel Guo is ready.

The "five" character is obliquely straight or curved; The "Zhu" head of the word "baht" is square-folded, the head of the word "gold" is smaller, as if it is like an arrow, there is a horizontal stroke on a small number of money, and its material is changed to copper, so it is called cyanotic money, but the technical level is different in various places, the composition of the copper ore is different, the degree of understanding of the order and the attitude pursued by the officials are difficult to be consistent, so the money cast is very different, some are the same as the old Han Dynasty and half two, the back is flat without a wheel, some have large perforations, thin meat, and some have thick meat.

Generally speaking, coins minted have the phenomenon of cutting corners and not weighing more than five baht, and the more they are minted, the lighter they are, the later they are, the worse they are, and there is a phenomenon of repeating the mistake of half two or three baht coins.

Emperor Wu recast the five-baht coin, the main purpose is to establish credibility, stabilize the finance, make the private caster unprofitable, give up the illegal business on their own, in order to completely solve the problem of private casting, the county officials, because the old habits are difficult to change, still join hands up and down, in order to fill their pockets.

Emperor Wu adopted the advice of the ministers, and in the second year of the Yuan Dynasty, he took back the coinage rights of the counties, and the central government unified the minting and currency issuance, thus preventing another flood of bad coins.

The numismatic business is handled by the three official bureaus in a unified manner, which has many advantages: first, it makes the coins standardized and regularized; second, improve the technical level of coinage; Third, the production volume has been increased; Fourth, effectively prevent private casting; Fifth, it is easy to control the issuance.

The initial weight of the three official coins is more than five baht, the production is exquisite, and the coinage technology adopts the copper model method, the weight of the coins minted is the same, absolutely in line with the standard, and the edges of the coins are polished, very neat, so it is called "red money".

After the new money was cast, the Han government used it to redeem the county money, one to exchange the bad money 5, to the fourth year of the Yuan Ding, most of the bad money has been recovered, and then the county money was forbidden to circulate forever.

Thirty-one years after the issuance of the five baht, Emperor Wu of the Han Dynasty collapsed, during this period, the amount of money minted was very large, and the paradigm of money also changed, such as the size of the text, the calligraphy structure is different, as for wearing the upper half moon, wearing the lower half star, wearing the upper and lower horizontal, the star and moon text, the four decisive texts and so on are just the signs of the furnace.

After Emperor Wu took back the right to mint money, the Han government unified coinage, the three officials and five baht were minted at this time, the money was exquisitely made, the side Guo was neat, the weight was accurate, the money was beautiful, it was a model in the money, and the three officials pointed to the bell official, the copper, and the loss (skill).

In order to promote the law of equal loss, the central government has newly set up an official of the water yaduwei, and has worked in Chang'an Shanglin Garden, which is the institution of the Han Dynasty government to mint money, and is the royal garden that was expanded on the basis of the old garden of the original Qin Dynasty in the early Han Dynasty, with a grand scale, there are 70 palaces, and the surrounding area is more than 300 miles.

During the reign of Emperor Zhao, everything was prudent and guarded, the foreign war was roughly over, and production was encouraged internally, and the economic situation was better than that of Emperor Wu at the end of the year, the size of Emperor Zhao's five baht was the same as that of Emperor Wu's three officials and five baht, but the weight was lighter than that of Sanguan and five baht, and it was generally slightly heavier than Emperor Xuan's five baht.

From the point of view of calligraphy, the word "five" in Qian Wen has changed greatly, the general glyph is slender and long, the pen on both sides of the word "five" has become curved, the ends of the two strands have obvious convergence, and the upper and lower horizontal ones are longer and connected to the outer Guo; The prefix of the word "Zhu" of the word "baht" is folded squarely, and the word "gold" is triangular next to it, which is significantly lower than the word "Zhu". The outer Guo of the face is higher and narrower, but it is slightly lower than the five baht of the county and the five baht of the three officials, and there is a horizontal or half-star mark on the bottom. The copper color is deep red, and the casting technique is slightly rougher than that of the Sanguan coin.

Following Emperor Zhao, Emperor Xuan reigned for twenty-four years, the rulers ruled Qingming, the four seas were fine, the country was peaceful and peaceful, and the Wufu was prosperous, it was the golden age of the Han Dynasty, and at the same time the trade was also very developed, and it was also the peak period of commerce, so the money was minted every year, and it was quickly issued out, and it soon flowed back to the treasury.

Emperor Xuan in the last years, the treasury of more than 8 billion money, Emperor Xuan five baht is Emperor Xuan's reign during the casting line, the money copper, shape, book body, casting have reached the degree of perfection, the money pen stroke is straight, give people a sense of delicate and super easy, the word "five" hand pen bends, up and down horizontal painting beyond the end of the pen, the "gold" head of the word "baht" is mostly isosceles triangle and lower than the word "Zhu".

In addition, there is another characteristic, that is, the outer Guo of the money is sloped and inclined from the outside to the inside, the face of this kind of money is the widest in the two Han and five baht, its shape is neat, the meat surface is smooth and clean, the inner and outer Guo of the money is slightly higher than the flesh of the money, and the thickness is consistent.

The small five baht was cast in the fourth year of Emperor Wu's Yuanding, commonly known as "chicken eye money" and "goose eye money", which was named after its small shape; The small five-baht face text "five baht", the casting is exquisite, the face has Zhou Guo, there is no good Guo, the back meat is good, Zhou Guo is ready, and the text is clear; The style of Qian script is also different from that of Emperor Wu, Emperor Zhao, and Emperor Xuan.

Some of the "five" characters are straighter, some are slightly bent, and some are very bent, and some of the shapes are worn on the horizontal painting such as the three official money style, and there are also a kind of five baht that is most common in the face without Guo, the small five baht is not cast in one dynasty, and it is the same as the ordinary five baht, which was cast in the Han Dynasty after Emperor Wu, and the small five baht is the money of the dead rather than the money, which is for the purpose of burial goods to prevent tomb robbery and theft.

The five-baht money is also known as "grinding Guo five baht", "cutting Guo five baht", when Emperor Wu first cast five baht, "Zhou Guo Qi quality", in order to prevent traitors from grinding copper from the back of the money to melt, but in the late Western Han Dynasty, there was another kind of edging shear wheel five baht, which is a kind of coin that uses ordinary five baht money to reduce weight by grinding processing, in fact, this kind of five baht is the most appropriate to call the five baht grinding edge.

For example, today, all kinds of five-baht coins are popular, and it is difficult for the government to inspect and inspect, and there are many drawbacks, so for the sake of business in the world and for the sake of profit, Yang Yi began to mint coins in the northern region early.

The newly minted coins in the northern regions are printed in regular script, the front ring is printed with the Han princess system, the front is when one, when five or ten, the back is unified with Chinese characters, the ring has a dragon pattern, the copper coins, silver coins, and gold coins are exactly the same, the money is strict and regular, and the thickness of the strokes is the same.

The book is like today's Cai Yong's calligraphy as a model, its glyph bone is majestic and dignified, the knot word is changed from the slender length of the official book to the square, the square is round, it has a centripetal force, the font is thick and strong, there are muscles and bones, there are also sharp edges, the style of the book is majestic, and the muscles and bones are multi-forced, and it is currently emulated by the world.

The new coins of the Northern Regions are neatly shaped, deep and flat, the side connecting the money and flesh is vertical, the back has the inner and outer Guo, the four corners of the individual inner Guo are slightly convex, the casting is fine, the face and back are flat, the outer Guo is wide and narrow, and the rules are neat.

The color of the copper coin is brass, with a copper content of more than 80%, reasonable proportion, and good physical properties; The color of the silver coin is bright silver, the silver content is more than 90%, the appearance of the new silver coin is snow-white, the two silver circles are overlapped and rubbed, there is a sense of oiliness, if it is hit with another silver dollar, the sound is clear and soft; The color of the gold coin is golden yellow, and the gold content is more than 90%, so it is easy to identify.

A gold coin, weighing about one tael, 100 copper coins are equal to a silver coin, 100 silver coins are equal to a gold coin, a gold coin is equivalent to 10,000 copper coins, equivalent to 10,000 five baht coins, that is, ten times, although the copper coin and the Han five baht are the same price, but the official of the Northern Regions does not recognize the Han five baht money, and the money houses placed in various parts of the Northern Regions are now weighing and exchanging money for the Han five baht.

Because the official coinage of the Northern Regions is regular, the pattern is novel, there is a clear weight and fineness, easy to identify, therefore, it was quickly accepted by caravans all over the world, with the caravan passing the world, and soon circulated within the scope of the Han Kingdom, because the currency minted in the Northern Regions, the currency type is uniform, fineness, weight has strict regulations, and it was quickly recognized and accepted by the people of the world, and even gradually replaced the Han five baht and became the main currency in the circulation field.

Even Liu Hong of the Han Palace, now ordered that all parts of the country no longer mint five baht coins, let the northern region mint coins, and gradually market the world, it is really the official coinage of the Han Dynasty, in fact, it is a loss-making business, the material may not lose money, but with the loss is not necessarily.

Now that the Han Dynasty is in financial difficulties, Liu Hong is selling his official position, in fact, he is not selling his official position, but for each official position, he must pay a certain amount of money to Zhang Rang before he can take office.

Today's forced labor and taxation can no longer maintain the normal operation of the Han Dynasty, Liu Hong lacks the ability to open source, and he can think of scraping a sum from the hands of officials, and he is racking his brains.

The release of the coinage made Liu Hong breathe a sigh of relief, and the money invested in it every year was a large amount, in fact, he had pondered about minting gold coins, but he ordered the craftsman to study for a long time, and he couldn't mint gold coins similar to those in the Northern Regions, so he had no choice but to put it down.

The Han Dynasty is still relatively wealthy now, of course, this has a lot to do with Liu Hong's "way to make money", although the Yellow Turban Rebellion is a serious disaster, but the taxes paid by the three states in the northern regions are transported from Hedong through the annexation of the state, and there is no need to dissolve the border silver in the DPRK and China.

It's just that now the situation seems to be intact, but it is as dangerous as a tired egg, after Liu Hong rested from the dormitory for a night, looking at the sky, but it was also a burst of shock, at this time he heard the movement outside the palace.

"Biography!"

It was Sun Zhang who came in, and now he has been promoted to a permanent attendant, but the rights have not increased much compared to before, but they can be compared with Zhang Rang and others in terms of class, and if you want to really get the rights, you have to fight.

The Han Palace is deep, in this deep palace, the right has to be fought for, and the name of the permanent servant is just a representative, you are qualified to fight for this right, but you don't really have it, so Sun Zhang is still in a humble state as always, and has not yet stretched out his fangs.

"Your Majesty, the stars have changed!"

Liu Hong was shocked when he heard this, it was impossible to hide the matter of the celestial phenomena from him, who was the emperor, Sun Zhang didn't come to say, waited for dawn, and one of the Jiuqing would often come to report, Sun Zhang was vigilant and let Liu Hong know in advance.