Expatriates that have been living long in Hong Kong or holders of a Hong Kong Permanent Identity Card can easily apply for personal loans from the banks. If you're new in Hong Kong though, you should be realistic with your expectations in getting quick approval for personal bank loans after you've only been in Hong Kong for a while and have a limited credit history.
Since personal loans are unsecured lines of credit, local banks will carefully evaluate your assessment in terms of being financially responsible even if you have a stable job and a monthly income. Local banks generally prefer to deal with people that have prior banking relationships and have proven to be trustworthy. As such you should work on establishing and maintaining a good relationship with your local banks before applying for loans.
Alternatively, new expatriates could try applying for personal loans with consumer finance companies or registered private lenders that have higher risk appetites and specialize in personal loans to foreigners.