Originally Posted by
FlyMileToHeaven
(a) get the Cathay Pacific American Express Elite Card which earns you 1 air mile / HKD 6 (ignoring welcome rates etc.) ; and
(b) pay that using your HSBC Platinum Credit Card (I believe any platinum will do, including Advance Platinum and Platinum Visa) via the online bill service (where you will find American Express as a 'merchant'), which earns you 1 air mile / HKD 16.6 recurring in addition.