Where was the Infernal Affairs film series filmed?

The Infernal Affairs film series (3 productions, 2002 to 2003) carries 1 recorded filming location in 1 country, and Wikipedia names 9 more. Membership comes from Wikidata's part of the series statements, the places from its filming location statements, so every claim on this page can be checked at its source.

The productions, in order

• Infernal Affairs 2002
• Infernal Affairs II 2003
• Infernal Affairs III 2003

Every filming location they used

Deduplicated across the whole series: a place two members share appears once.

Named in Wikipedia's own articles

Places the members' Wikipedia articles name with no matching Wikidata statement: weaker evidence, listed apart here exactly as it is on every page of this site.