Try Maldives. If you do a normal HKG-MLE in Y it can cost you 6000+ HKD.
Its also medium haul which gets you 100TP with one trip if you need that.

If you work out the maths its:
Zone A = 3000 per trip
Zone B = 7000 "
Zone C = 18000 "
Zone D = 25000 "
Zone E = 50000 "

and while you often get 3000 HKD or 7000 HKD for zone A+B and you'll sit in economy, you can easily find better deals without this promotion for Zone D and E.