Hong Kong family looking for a helper

I am a working single mom with a 6 year old son. The boy goes to school from 7:30 to 4:30pm. One or two grandparents might also live with us to help take care of the child. We also have two cats which are quite independent. We are looking for a warm and responsible person to help take care of cooking, cleaning, and childcare at home. We hope the helper will be part of the family. We live in a condo in city center.