how to keep up your spoken Chinese?

For me it is not a problem,because i live in China now,and chinese is my native language

Mostly through speaking with my parents and trying to teach myself.  I am struggling to retain whatever Chinese I still know.  That's why I joined this site (:

I often watch chinese movies with subtitle and hear chinese musicsongs. I have a cd with small dialogs and pronounciation drills: zhu, chu, shu, ri,.....I hear it and try to repeat. I have some chinese friends here in this board.

Sometimes I say a chinese sentence to my german friends, but they can´t understand me :-)