Anecdotes

In the scene where they are buying clothes for Jet Li's character, Jet dresses up as several well known movie hitmen, such as Léon in Léon (1994) and Mark in Le syndicat du crime (1986).

This is the only Hong Kong movie where Jet Li used his own voice.

The "ashes" of the main villain's grandfather was actually sugar.

In Kiki's bedroom is a poster for the movie Trois couleurs: Bleu (1993).