Seeking Chinese-speaking babysitter to work on weekends

We have a 3 year old boy and a 2 month old baby girl. We are looking for someone who speaks at least a little bit Chinese to help grandma taking care of the two kids on weekends. We are flexible in schedule. You can come for half a day or a full day on either Saturdays or Sundays. Responsibilities include playing with the 3 year old or watching the baby when grandma takes care of the other child or does housework. Grandma will be at home so the work load is light. The 3 year old speaks Chinese and a little bit English. Grandma only speaks Chinese. We live in Menlo Park, 15 minutes biking distance from Stanford campus. You will need to have your own transportation to our home. The pay will be $15-20 per hour depending on experience.