Hong Kong's Shaw Brothers Studio provides sets for filming.
All of the location shots in Hong Kong were filmed Silent. This eliminated the need for the sound crew in the cramped streets, stairways, rooftops and boats. Most of the interior scenes were filmed on stages with a sound crew.
Dialogue was dubbed in and ambient sounds were added by Foley Artists.
The opening titles have been extended, adding more shots of the cast interacting with Benson. The theme song has been re-orchestrated to fit the longer length.