The obvious reason why the rmb could become a global currency is lots of companies buy and sell stuff from china, imports and exports, so they come to accumulat

The obvious reason why the rmb could become a global currency is lots of companies buy and sell stuff from china, imports and exports, so they come to accumulate it. They want to trade it for other things, so the rmb comes to be used and more. Of course it doesn't float free, and the country limits transactions across borders. But I could see it slowly becoming more used as a universal currency, if they stop controlling the exchange rate and stop limiting capital flows. Those are 2 big changes, but the more they slowly relax those controls, the more likely they will succeed.