In order to achieve the specific look of Chinese "wuxia" (martial arts) film of the 1970s, Tarantino gave director of photography,
Robert Richardson, an extensive list of genre films as a crash-course in the visual style they used. The list included films by genre-pioneers
Cheh Chang and the Shaw Brothers. Tarantino also forbade the use of digital effects and "professional" gags and squibs. As such, he insisted that bloody spurts be done in the fashion made popular by Chang Cheh: Chinese condoms full of fake blood that would splatter on impact