The Invincible Eight, or the original title Eight (Heavenly) Dragon Warriors is a high quality Kung Fu action movie starring Angela Mao, Nora Miao, and Lydia Shum.
An evil general is causing misery to many people. His nine henchmen carries a whip that forms an iron attack formation. Eight martial artists that bear grudge on the general team up to dispatch him, but first they must break the henchmen's deadly whipping attack.
I like kung fu movies from Golden Harvest of this era, because it had modern looks to it. This is probably due to the fact that they focus more on the character rather than just the fight scenes, or the story. The actors they've recruited also aren't as stiff as the Shaw Brother's actors. Golden Harvest's choice of actors will be vindicated as many of them became major celebrities in future Hong Kong entertainment industry.
The quality of this film is very high for a fledgling movie studio. While Angela Mao hasn't developed her signature style kung fu action (or the long pony tail), the overall quality of the movie I'd say is equal or better than any movie the Shaw Brothers have produced. I didn't know that Lydia Shum has played a kung fu artist role in her career. She will be missed.
This is a good kung fu action movie, and worth a watch if you're a '70s martial arts movie fan, or interested in seeing the early career works of the leading ladies in this film.