The more, the better. I remember that in the past, if you bring back the GBP cash to Chinese banks (with the receipt), you can get RMB refund at the same exchange rate (if it is within 90 days of transaction). Not quite sure whether this is the case now.
I remember that in the past, if you bring back the GBP cash to Chinese banks (with the receipt), you can get RMB refund at the same exchange rate (if it is within 90 days of transaction). Not quite sure whether this is the case now.