The Terror of the Tongs (1961)

A secret society of Hong-Kong at the beginning of the century called "The Red Dragon Tong" kidnaps the captain of a ship in the harbour of Hong-Kong as he tries to detain the killers of his daughter. Because the secret society is very powerful it is not easy to free him from their hands.
In 1910 Hong Kong Christopher Lee plays Chung King, an evil leader of tongs who will kill anyone who stands in their way of their slave and opium trade.
A sea captain (Geoffrey Toone) battles them when his daughter is murdered. Violence follows and then bodies begin piling up.
Unusual Hammer film--not really a horror movie--more like a violent action film. Lee is having a whale of a time playing King and Toone is OK in his role. Everyone else is pretty terrible--especially pretty Yvonne Monlaur and all the Asian actors. The low budget does show and the script is sort of scattershot.
I'm giving it a 7 because it's no longer than it needs to be (79 minutes), Lee is very good, there's some beautiful color photography and some pretty strong bloody violence for 1961--but then this IS a Hammer film.
Worth seeing on a slow day.