Which bank is best for expats in Hong Kong?

Could you please elaborate on which bank would be the most suitable choice for expatriates residing in Hong Kong? Could you possibly highlight the key features and services that these banks offer specifically catering to the needs of expats? It would also be helpful if you could compare and contrast a few popular options, outlining their strengths and weaknesses in terms of convenience, customer service, international transactions, and overall banking experience. Additionally, could you provide any insights into the banking regulations and requirements for expats in Hong Kong? Thank you for your assistance in this matter.