Complex sentence: Despite being awarded a Category III rating, the film was a box office success, and later won awards for Best Screenplay at the Hong Kong Film Critics Society Awards, the 27th Hong Kong Film Awards, and the 2nd Asian Film Awards.
Split into simpler sentences: Despite being awarded a Category III rating, the film was a box office success in Hong Kong. It also won awards for Best Screenplay at the Hong Kong Film Critics Society Awards, and the 2nd Asian Film Awards.