I clearly understand that your are looking for online tutor from Western Countries but I find myself as a right candidate hence I am bidding for this project.
First, I am a native English speaker though I live in India.
Second, I know Chinese at least at the elementary level and more than that I understand cultural context of living in China, kids of upper-middle class families and their aspiration.
Third, I have offered both in-person and online tutoring English language for bilinguals.
So, please do not discard my proposal due to geographic requirements and consider my profile.