I rate this a broken 5 just because the main protagonist is the ubiquitous stuntman Tang Chin Tang, aka Tong Kam Tong in cantonese In the 70's and 80's you could see him everywhere: from Ninjaploitation like DRAGON FORCE (1982) to Jackie Chan's PROJECT A. Prolific stuntman-director Law Ki gives the leading role to him in this very low budget movie originally titled The Invincible Boxer (not to be confusing with the eponymous Shaw Bros' classic aka King Boxer/Five fingers of death). Tong Kam Tong plays a vagabond who become friend of another homeless, then the pair is hired by the local mobster who rule the waterfront, but the hero decides to move on the side of the harassed dock-workers. Tong Kam Tong is more good in fighting than acting, but the cast includes also Bruce Lee's co-star Tony Lau Wing as the doctor, and two actors from the legendary King Boxer/Five fingers of death: Chen Feng Chen as the friend who becomes an opponent, and Korean actor Kim Ki Ju as the evil boss. That doesn't help the movie but help the fans of the genre to be a little less bored. The Martial Arts scenes are staged by vets Lau Kar Wing (brother of the legendary filmdirector Lau Kar Leung) and Huang Pei Chia, both of them very well-known faces for the fans of heydays of HK Kung-Fu cinema. All in all a mediocre film with interesting faces. Also released as The last of Kung-Fu, I saw this at the theatre in Italy under the title IO SONO BRUCE LEE LA TIGRE RUGGENTE, 1980 (transl. I'M BRUCE LEE THE ROWLING TIGER) and it was filled with fight-scenes illegally taken from THE BIG BOSS and THE WAY OF THE DRAGON, plus a voice-over narrating that Tong Kam Tong is Lee's cousin. That's why I still remember this crap and that's how the western distributors exploited Bruce, back then.