From 10kbullets.com :

Extras for this release include the film’s original trailer (1 minute 45 seconds – letterboxed widescreen, in Cantonese with English subtitles), a teaser trailer (32 seconds – letterboxed widescreen, in Cantonese with English subtitles) and interviews with directors Oxide Pang Chun, Danny Pang (10 minutes 27 seconds – letterboxed widescreen, in Cantonese with English subtitles), actors Aaron Kwok (4 minutes 49 seconds – letterboxed widescreen, in Cantonese with English subtitles), Ekin Cheng (3 minutes 48 seconds – letterboxed widescreen, in Cantonese with English subtitles), Simon Yam (5 minutes 13 seconds – letterboxed widescreen, in Cantonese with English subtitles), Nicholas Tse (5 minutes 36 seconds – letterboxed widescreen, in Cantonese with English subtitles), Kenny Ho (1 minute 39 seconds – letterboxed widescreen, in Cantonese with English subtitles), actresses Charlene Choi (10 minutes 27 seconds – letterboxed widescreen, in Cantonese with English subtitles), Yan Tang (1 minute 19 seconds – letterboxed widescreen, in Cantonese with English subtitles). Other extras include two behind the scenes segments “Montage” (3 minutes 36 seconds – letterboxed widescreen, in Cantonese with English subtitles), “Return of a Thousand Swords” (2 minutes 24 seconds – letterboxed widescreen, in Cantonese with English subtitles), 5 CGI demonstration clips, a ‘Making of’ featurette with comments from the cast and crew that has broken down into seven separate segments, “The Characters” (4 minutes 55 seconds – letterboxed widescreen, in Cantonese with English subtitles), “Special Effects Production” (1 minute 33 seconds – letterboxed widescreen, in Cantonese with English subtitles), “Wind Turns Evil” (3 minutes 5 seconds – letterboxed widescreen, in Cantonese with English subtitles), “The Unsung Heroes” (4 minutes 15 seconds – letterboxed widescreen, in Cantonese with English subtitles), “The Meeting of Cloud and Wind” (3 minutes 54 seconds – letterboxed widescreen, in Cantonese with English subtitles), “Cloud’s Sword Style ‘BA’ “ (3 minutes 18 seconds – letterboxed widescreen, in Cantonese with English subtitles), “The Fight on the Cliff Top” (2 minutes 50 seconds – letterboxed widescreen, in Cantonese with English subtitles). The interviews with cast and crew cover the various aspects of this production, the characters, the story and the special effects. The main extra included with this release is a detailed and insightful audio commentary with Hong Kong cinema expert Bey Logan. Also included with this release are trailers for Raging Phoenix (1 minute 43 seconds – anamorphic widescreen – HD), Shinjuku Incident (1 minute 49 seconds – anamorphic widescreen – HD), IP Man (2 minutes 6 seconds – anamorphic widescreen – HD), House of Fury (1 minute 14 seconds – anamorphic widescreen), Kung Fu Dunk (55 seconds – anamorphic widescreen), The Myth (1 minute 32 seconds – anamorphic widescreen), Fist of Legend (1 minute 30 seconds – anamorphic widescreen – HD), Robo-Geisha (2 minutes – anamorphic widescreen – HD), Robin-B-Hood (1 minute 39 seconds – anamorphic widescreen – HD) and Kill Zone (1 minute 27 seconds – anamorphic widescreen – HD).