The Fearless Duo
Yuen Chu & Yuen Qiu, star as two sisters whose family is slayed by the merciless 'Ghost Leg Killer' (Hwang Jang Lee). They change their names and go into hiding to perfect their kung fu techniques. Meanwhile, a happy go lucky wanderer by the name of Ah Sam (Lau Ga-Yung) is in search of a Martial Arts master to teach him the art of Kung Fu.
Starring Yuen Qiu, Hwang Jang-Lee, Lau Ga-Yung, Wang Han-Chen
Watch "The Fearless Duo" on Amazon released in 1978. It's a comedy and action & adventure movie, and has a rating of 6.9 out of 10 from Imdb which is usually fine for this kind of movie, and is currently only available for purchase or rent.