When I joined the project which was initiated by 葉平, who was a physics professor in the National Taiwan University and then joined Google. He became the head at Google and Taiwans cloud department and then he moved to the valley to work for Google Analytics I think. When he moved to the valley with his children he found it very difficult to teach his children Chinese in the US. It is a very common problem. Teaching Chinese is hard enough and doing that in the US is very difficult.