The House of the Red Dragon (1969)

The hatchet men of the bloody "tong" held a claw-like hold on an empire of slave girls, opium dens, and vice!

In the 1890's, Suzie, an 18-year-old Chinese stowaway, leaves her hiding place on a ship after it docks in San Francisco, only to find herself in the middle of the tong wars and a witness to the murder of a runaway "love-slave." She makes her escape and finds work at the Mandarin Club, owned by her distant uncle Wong, who heads the Red Dragon tong.