Looking for Americans living in Beijing

Hello!
My name is Carla Fernandez. I am a PhD student in Psychology at Penn State. I will be conducting research at Beijing Normal University in May. For my study, I need American people living in Beijing. It is a language processing study, which is kind of fun. It is a 2 to 2.5 hour experiment and we will pay participants 45 dollars. Would you be interested in participating? I am having a lot of trouble finding participants and I reaaaally need to finish this project for my dissertation if I ever want to graduate. Are there many Americans in Beijing? Do you have any tips on where/how to find them?
My number is Protected content , even if you don't want to participate it will be nice to meet up with you!
My email is Protected content

Thanks!

Carla