The exchange rate for cross-border payments is based on the prevailing list price of the partner bank with AlipayHK. Under normal circumstances, the transaction exchange rate will be updated daily at the fixed exchange rate of the partner bank's cash exchange rate.
If you need to check the real-time exchange rate, you can click "More" in the application centre in the middle of the homepage (Recommendation: Tap "Homepage Apps", tap "Edit", -drag "X-Border Services" to the homepage application), find "X-Border Services", and select "Currency".
According to regulatory requirements, cross-border payments can only be made by connecting an account with a Hong Kong credit card and entering a name, or completing intermediate or advanced account verification. The payment method is no different than when it is used in Hong Kong.