Watch Sadisflix. Letter to the Young Intellectuals of Hong Kong is a 35mm film that utilised and appropriates footage from a documentary Henry Moore exhibition in Hong Kong, through over-dubbing, painting directly onto the film and other gestures, Mok turns the material into an incendiary address to Hong Kong's youth. Intercut with newly filmed material creates, the film also functions as a personal diary of Mok's political activity throughout the 1970s.