I heard Bruce Lee learned Kung Li Chuan before he came to US. he used one Kung Li Chuan move in the movie "Chinese Connection" by back fist on one guy's face and hit the other guy's groin at the same time.
Since we are talking about 3 sectional staff here, here is a nice 3 sectional staff form to share. I met him about 35 years ago in Dallas Karate tournament (the year that Bruce Lee died). I like his form very much. This guy could fight too. He had a nice side kick, side kick, turn around back kick combo. I don't know where he lives now. Does anybody know this person?
http://johnswang.com/3_section_staff.wmv