I have been trying to us the little Chinese I know when I am out and about. I have been learning my numbers. They typically display costs in English numbers but they do have characters and hand signals similar to those in sign language.
That coupled with hello, goodbye, and I am a mother/she is my daughter is pretty much all I got. But they really enjoy it when you try and hey if I can bring a little levity to their lives I feel successful lol🤷♀️😎
I guess I would reiterate my earlier statement of maybe learning the language a little before you come.