My advice on all things like this is to treat every person as unique, and not make too many assumptions. Yes, the culture that a person was raised in impacts who they are, and there are cultural norms that tend to be true. But China is a big and diverse country. A person who grew up in a small village in China will have a much different experience than someone who grew up in a big city, just for one example.
Also, remember that she is here now, and she isn't going to be expecting things to be like China. She may not even want that
Be respectful. Don't push if she sends reluctant to share something. Get a sense of her as a person and what she wants by talking to her. Same advice holds true for anyone you might be dating.