Infernal Affairs - Andy Lau (2002) - Fa Yuen Street, Mongkok

The location of the drug deal with the Thais is a corner building on the junction of Fa Yuen Street and Shantung Street. The curved building where the drug deal is supposedly taking place - or at least the exterior establishing shot - is the Pak Cheung building on the NW corner of the junction. The cops, on the other hand, are located in the building on the opposite corner which is in fact a school building called G.T (Ellen Yeung) College. The fire escape where Andy Lau makes a phone call can be seen on the Fa Yuen Street side of the building and it looks like they were on the very top floor which has a covered walkway across the top of the building.

Looking west along Shantung Street

Looking north up Fa Yuen Street from G.T College

Andy Lau on the G.T College fire escape. Looking down onto Fa Yuen Street

View down onto the Fa Yuen Street entrance to the Pak Cheung building