Send email to theclub@cathaypacific.com with (a) picture of my ANA Diamond card, (b) past 12 months of flight record of ANA, (c) past Cathay flight record. The rep came back to me offering (1) Waiving of HKD 50 registration fee with (2) Green tier. Green tier is the first stage of Cathay, and no real benefit of being such tier, only benefit from the offer is HKD 50 waiver.