用英文写出元宝的来历

In the history of money China, formally called the "gold" gold and silver money, began in the yuan dynasty. To the 13th year of yuan (1276), Mongol armies destroying song back to Yangzhou, Prime Minister Bo Yan ordered troops baggage check, the resulting scatter money entirely pin casting ingot, GUI Chao Xian Na. Handling the matter of pin money, according to Jin Dynasty silver collar precedent made each gold heavy fifty taels of silver, named "Yangzhou ingot, submitted to Kublai Khan. Khan will give Wang Sunguoqi a gold ingot. At that time the cast ingot shape is a saddle, two arcs, the middle waist, and the gold and silver collar is very similar in shape. Yuan Dynasty said of gold and silver money as gold, the treasure of the Yuan Dynasty of... In the history of Chinese currency, officially the gold and silver money called "gold", began in the Yuan Dynasty. To the 13th year of yuan (1276), Mongol armies destroying song back to Yangzhou, Prime Minister Bo Yan ordered troops baggage check, the resulting scatter money entirely pin casting ingot, GUI Chao Xian Na. Handling the matter of pin money, according to Jin Dynasty silver collar precedent made each gold heavy fifty taels of silver, named "Yangzhou ingot, submitted to Kublai Khan. Khan will give Wang Sunguoqi a gold ingot. At that time the cast ingot shape is a saddle, two arcs, the middle waist, and the gold and silver collar is very similar in shape. Yuan said gold and silver money for "gold", the meaning of the treasure of the Yuan Dynasty, gold called gold ingot, silver called silver ingots, later also became known as a convention, the gold and silver money. In the history of China's currency, the discovery and use of silver are later than gold. This is the silver and copper and lead compounds, smelting decomposition technique is difficult to grasp the reason. The Yuan Dynasty with silver, a heritage of money in Song Dynasty, on the other hand the value dimension of the ingot has been developed to a kind of means of circulation to become worthy of the name of the currency. Yuan cognition silver, in the early days of Genghis Khan, Kublai Khan in casting "Yangzhou ingot before, Taizu Genghis Khan in Mongolia has cast over the Da Chao Tong Bao" coins. This money is the rat, ox, tiger, engraved the mark of the beast, is a Zodiac calendar. When Mongolia and the Mediterranean coast of Turkestan and close trade relations, caravan contacts are also very frequent, deal with the use of common thorns submodule silver, Central Plains is to enhance the silver monetary functions. At that time, silver is not only used as a gift, the state trade, lending and so on, but also often used to say that prices or direct purchase of grain, horse, etc.. Although yuan at the beginning of the court had expressly prohibit private circulation and trading of gold and silver, but lending among the common people, the daily trading even labor remuneration payment and so on to silver valuation has become commonplace things. Later yuanchengzong tiemuer during the reign of Yuan Zhen and cast "Yuan Zhen Tong Bao" small silver is not circulation, may be as lucky money or make offerings to the money. The importance of money but also reflected in the establishment of the government system of paper currency, still in silver for the money to ensure that notes issued. An obvious phenomenon is that initial Baochao also to equivalent of silver bullion calculation, then straight spindle as a unit to measure the Baochao. Mongolia Empire love the silver, which can be seen.