I agree with Sandman. However, I don’t think it will be easy to find a good teacher that way. The Guqin players are usually excentric and don’t just teach Guqin in order to earn some extra money. It can be pretty hard sometimes to even find somebody to play Guqin for a audience of more than just a couple of sophisticated friends. Try your luck anyhow.
Generally speaking I think it would be more efficient (not necessarily faster) to look for somebody who can introduce you to a guqin player.
What is your background for (Chinese) music? Can you play any other Chinese instrument? Do you speak Chinese?