How can we buy RMB/CNY in forex.com or other places? -

I want to invest in RMB/CNY, where can I get them? I tried forex.com, but it seems like they do not provide RMB/CNY. It is only a practice account though. RMB is pegged to the dollar, theres no point in buying them - its like spending one dollar bills to buy 20 dollar bills.