China's currency, pent up inside the country's borders for decades, is emerging as a hot property in global foreign exchange markets, just months after Beijing allowed the yuan to be bought and sold outside the mainland for the first time.

Daily trading in the yuan has grown from zero to $400m (€299m) in the past few months, as the currency of the world's second biggest economy begins to flow around the globe. Global trading in yuan allows businesses to buy and sell the currency to finance trade, investment and borrowing. It's an important step for the yuan to play a role in global financial markets.