I visited Hong Kong, Shenzhen, and Mainland China in the year 2006 and would love to visit a friend of mine who happens to be a Legal Domestic Worker in Hong Kong probably in April Next year.

However, the reason for these Inquiry is to ascertain if it's alright for a Legal Domestic worker in Hong Kong to invite me, and if it is, what other requirements are needed for me to commence my visa application to Hong Kong ?