Chinese family looking for a helper

 We are looking for a helper . We are a family of five people. Two elderly (they are healthy just to take care of young child) one couple and one little kid of 2 yrs old. We live close to HK University with room area above 1000 square feet with separate room for helper. We hope helper is able to cook chinese food, and maintain good hygiene. Her daily duty includes cleaning, cooking, shopping and other chores.  If she can understand a little bit mandarin it would be a plus.