Yes, there are ten killers listed in the credits. The movie opens with two guys at a table talking about the gang of ten killers. They make some sort of plan then cut to a guy training.
The unprofessional looking master wants the student to sign a contract that makes him 50% in debt for life. In contrast another master makes his student a professional constable. The scenes alternate between the two. Killers keep coming after the goofy master and his student does most of the fighting.
Bolo enters with a ridiculous mustache. Mark this down in your Kung Fu Movie Record Book - Bolo wins a fight! Sure, he is belly up after the next fight, but that first fight he remained upright. I consider Bolo to be the biggest sport in movie history and respect him for the fact that in 99.8% of his fights he ends up either dead, down, dropped, disarmed, defeated, destroyed, dominated, defused, dragged, or discombobulated. (Though never defenestrated or decapitated.)
I highly recommend this movie to fans of the genre. I am a hard core fan on a mission to watch every martial arts movie made from 1967 to 1984 and after 7 years I just now came across this gem. It is low budget to the point where it seems a bunch of stunt men just got together for a few days in the country and put together a movie by showing off their strengths. It is all comedy but unless you can observe the quick comedic touches in the martial arts sequences and the standard schlock of these movies you really won't get it. If you do get it the fights compromise at least 50% of the movie run time and they never get repetitious. The only thing it lacks is weapons.
I rate it 7 out of 10 and count it as one of the best of 1977.