Chinese classical music

I learned Chinese classical music instrument-dulcimer since my childhood.In fact ,I am still not good at it .I can play some tunes fluently, but not perfectly .Maybe it is just because I don't work hard enough. Some people who know a little about music would think of that I really do a good job. (But I know I just cheat them.) I think I should pay more attention on it and improve my level.Maybe one day I can play a perfect tune and say bravo to myself.