Originally Posted by ernestnywang

This is not a mixed-carrier round-trip redemption. A return redemption cannot have an open jaw at the origin between different countries/territories. Please refer to https://www.asiamiles.com/en/terms-a...onditions.html

Nevertheless, a round-trip does not save you miles. It costs the same as 2 one-ways. The only benefit is, if you need to refund, you only have to pay the penalty once, and if one of your flights is changed, you can change the other ones for free as well.

On the other hand, while 2 one-ways would require at least 70000*2=140000 AM, if you take HEL-NRT, NRT-HKG, or both on JL instead, you can turn this into a oneworld multi-carrier award (which needs 2 airlines other than CX), and that would only require 135000AM.