John Woo in the documentary film, THE ART OF ACTION: MARTIAL ARTS IN THE MOVIES:

When I shoot gunfight films, I use the same feelings as in the martial arts film, only I use double guns in place of the sword. For example, the layout of my scenes, character design and those action designs are all very close to Chang Cheh's martial arts film style. Ah, the heroes in my films shoot many times, continuously, and people get hit, continuously. Now, that feeling has the Chang Cheh martial arts films' shadow. When I deal with my hero, his stance as he holds the gun -- and his views of the gun -- is the same as the heroes in the martial arts film, but he holds a sword. Now, how he uses his sword and the way he sees his sword, the feeling is exactly the same.