Look after 9 and 5 year olds and do housework

We live in 1000 sqm apartment with 3 bedrooms, 1 study, 2 bath rooms, and a maid room with separate bathroom. We have 2 adults (madam and sir) and we work. We have two children (9 and 5, girl and boy), no pets. We speak English and mandarin. We are looking for an honest, responsible, sensible, intelligent, good mannered maid willing to learn. The maid will help looking after the children (including sending to bus stop or school, and pick up), do shopping especially in wet market, cook breakfast lunch and dinner, and do housekeeping. We are looking for HK based maids, who has at least finished one contract, not terminated or broken contract, 35 years or under, bachelor or above.