HK inherently lacks privacy but can be made confidential by using Nominee Directors and Shareholders or Trust Shareholders. Appointing a Belize IBC or indeed any other company as parent will increase the privacy in layers but banking will always work back to the individuals behind all companies, so won't help you much. Then main issue with adding parent companies incorporated in locations such as Belize is that they are not as well respected as HK, so while you gain reputation from using a HK Company when a bank consider the structure they will always look at the worst case company involved in the structure. Having a company formed in places like Belize will then limit the HK Companies ability to bank.