In 221 BC, emperor qin unified the country, in the history of Chinese earliest currency "half" of the qin dynasty was born. Japan at this time, people have mastered rice planting technology, rice has become Japan's earliest monetary unit. In 265 BC, the Roman Italian peninsula, a common currency Roman COINS into the Mediterranean. Geography big discovery in the 15th century to let the world become more cohesive, lifted by the mysteries of the earth, the prelude to global trade has been opened, is accompanied by a rapid growth of currency use, during the next one hundred years, monetary boom for the first time in history. When meet in different currencies in the same market, fairness and stability of the exchange rate is the top priority, will not solve the problem, to trade currencies confused will not be able to imagine.
公元前221年，秦始皇统一全国，中国历史上最早的统一货币“秦半两”诞生。此时的日本，人们已经熟练掌握了水稻种植技术，米也成为日本最早的货币单位。公元前265年，古罗马统一意大利半岛，古罗马金币成为地中海的通用货币。15世纪的地理大发现让整个世界的联系变得更加紧密，随着地球神秘面纱的掀起，全球贸易的序幕也被拉开，与之相伴的便是迅速增长的货币使用量，在随后的一百多年里，货币历史上第一次大繁荣到来。当不同的货币在同一个市场上相遇，汇率的公平与稳定就是重中之重，解决不了这个问题，货币给贸易带来的困惑将无法想像。