It's Ana here from the Shopify support team. :)
I moved your post from Announcements over to Shopify POS.
To answer your question, we don't currently sell Shopify card readers for Hong Kong-based businesses. You will need to integrate a third party card reader with your Shopify store in order to take payments.
You can use any credit card processing terminal that is connected to your bank account and process sales through this. On the Shopify POS App, these sales will be processed through "external credit card" as the gateway and the app will track orders, inventory and keep everything synchronised.
Hope this helps!