25 years after the series finale aired, lead actor Felix Wong who played Kin finally reveals that producer Wai Ka Fai himself stated it was really Kin's sister who came to drop off the note as Gwan had already died in Ethiopia.But they used Carina Lau who played Gwan for the ending scene because she has 'prettier legs' and the scene will not be showing the face of the actress. This also ended up making the ending scene more surreal.