Helper for cooking and housekeeping and child care

Hello! We are a Chinese family, we have two children (five-year-old and three-year-old girls). We are looking for a helper who can help us in cooking, housekeeping and taking care of the children. The helper would be sharing the bedroom with our older daughter. We would love to have someone who is caring, hard working, responsible and has good personality to join our family. My husband and I speak English, so do the children. We live on the Hong Kong Island, our neighborhood is very convenient for buying things and children-friendly.