Cooking (mainly Chinese food) for Hong Kong elderly couple

We are looking for a helper for an elderly couple. They already have a helper working for them and are now looking for someone who has good experience in cooking Chinese food which includes shopping for groceries/going to markets. Other works (that are shared with the other helper) include housekeeping, washing car and taking care of the elderly lady.

Location is Southside of Hong Kong Island and it is an apartment with maid's quarter and bathroom. 

Expect to share a room with another helper (under present bed arrangement).

Salary is flexible and mainly according to experience and performance.

Since cooking is the main requirement, we expect that the applicant has been working in Hong Kong for some years and we will need to try her cooking before employment.