Recommended to get a ZA bank card when visiting Hong Kong

You can earn 1.5% stock cashback on spending
Why not take advantage of the perks?
Referral code: BC4CB3, fill it out to receive stock cashback and cash coupons
Link it to WeChat Pay HK or Alipay
There is a fee-free spending limit, which is slightly higher for Hong Kong residents
Mainland Chinese residents also have access, but it’s limited—Alipay has a HKD 3,000 monthly cap
But don’t just do it for the perks—if you use this card directly in Mainland China,
you’ll need to pay a 1.95% foreign currency transaction fee, which makes it less worthwhile
There are also fee-free limits available, or you can use this card for spending in Hong Kong
that’s more cost-effective