If you earn money in china, it is very difficult to take it out. So they're farryto the last thing that china want to open up is this financial system. With the us. Dollar in hand, you can use to buy all kinds of things from different countries. But with the basic rade, you cannot use it for to do anything other than the buying stuff from china. That so it is less flexible. The happy medium that china has been pursuing so far is to use uro actually.