Chinese family looking for domestic helper

I'm looking for a domestic helper to replace my current helper. The helper will be involved mainly in housekeeping while all my kids are in school. Will need a helper to watch over my youngest son who is 6 years old  when he returns home from childcare every day until 9 to 10pm before he goes to bed. Other chores will include preparation and cooking of pet (dog) food (about 2-3 times a week). Will provide more details during the interview process for greater clarity of job scope.