a hong kong film critics guessed it was inspired by "dog day afternoon", but i don't think so. it's much more witty, juicy, well-written, emotionally sensitive, and well-organized. most imprtantly, the theme and message are totally different fm the one starring al pacino. all actors involved were utilized by directors.
despite his great talent(no offense, but sorry, i think he's much better than such so-called internationally-acclaimed local directors as john woo, ronny yu, etc.), director yi's sensitivity and care about the minority groups, the issue which haven't been widely discussed (hv we, now?), outstanding all others. it's not the cheap sympathy, but care through the understanding of their feelings and situations. it's best illustrated by the injured pakistani guard.
frankly, leung chiu wai was still too young, and hasn't yet enlightened.