Black Dragon's Revenge
Three rival gangs embark on a search for Bruce Lee's handwritten "finger fighting " manual.
Starring Ron Van Clief, Charles Bonet, Jason Pai Piao, Yuen Qiu, Thompson Kao Kang, Addy Sung Gam-Loi, Lee Tin-Ying, Lau Hok-Nin, Tien Ying Li
Watch "Black Dragon's Revenge" on Amazon released in 1975. It's a drama and action & adventure movie, and has a rating of 4.8 out of 10 from Imdb which is fairly low for this kind of movie, and is currently only available for purchase or rent.