I believe that if you reside in HK for 60 days per tax year, you are liable to pay HK taxes, regardless of your nationality, or the structure of your company, where the pay was deposited, or any agreement.
From the IRD website:
"The Hong Kong tax system is based on the territorial concept. Salaries tax is imposed on all income arising in or derived from Hong Kong from an office or employment or any pension irrespective of whether tax on that income has been paid in other jurisdictions".
In other words, it has nothing to do with your domicile, residency or where you are paid. If the money originates in Hong Kong, then you will be taxed in Hong Kong, as CX basees discovered last year. However, if you perform part of your duties in other countries, you should only be "assessed on the income attributable to the services you rendered in Hong Kong". You must also show that you have paid tax in another jurisdiction.