The Vengeful Beauty (血芙蓉) is a 1978 Shaw Brothers film directed by Meng Hua Ho, starring Lo Lieh, Chen Ping and Norman Chu [fr].
Flying Guillotine leader Jin Gang-feng (Lo Lieh) is ordered to kill every witness including the prison interrogator and his family to keep the assassins a secret.
Rong Qiu-yan (Chen Ping) returns home to find her dead husband and immediately figures Gang-feng.
In order to keep his head, Gang-feng turns to his three adult children to quickly hunt down and kill Qiu-yan who is now attempting to reach her uncle.
As the hunt begins, Qiu-yan hooks up with a former Flying Guillotine member named Ma Seng (Norman Chu) and her old martial brother Wang-jun (Yueh Hua) who both help her along the way and become rivals in their love for her.