Well I'll be damned....

An actual 'theory' on this place that isn't totally cacked brained and actually makes some sense.

You had better watch, you will get the 'Face Palm', 'Double Face Palm', and tha 'not even worthy of a Face Palm' brigade on your back if you keep on like this.

And of course, the arbitrage can't work in the opposite direction due to the Chinese Renmimbi largely being a locked down currency.