Being a poet in the States is quite different from being one in China, because in the States poetry depends on the universities for its support. They finance the poets and help them get published. That isn't so in China. But overall it is the same. You can't change society with poetry.
I don't think of writing my poems for China or for the world. I mainly think of a small audience of friends and people I know. I am writing for that small group. They are not necessarily going to be able to read it, but that's what I have in mind when I write.
The name Bei Dao was actually given to me with the help of friends. When we were publishing our unofficial magazine, Today, we wanted to avoid being harassed by the police so we were trying to think of names that we could use. It was done very casually.