One of Jackie's earliest films, this already shows the remarkable talent he has for choreography and comic timing. All the more remarkable for the fact that he also wrote and directed this at the age of 25 (Spielberg was 28 when he directed his first film).
All the hallmarks of a Jackie Chan are there, though understandably not quite as polished as he later managed to achieve.
The humour stands up well too, for its age. I did laugh out loud in a couple of places.