https://hkmdb.com/db/people/image_detai ... ay_set=eng
This screenshot shows Lee Ying (5) who is already credited. I did not notice Sai Gwa-Pau in the movie, he isn't credited either. So I will remove him soon, unless someone proves me blind
Lee Ying plays Man Ka-Lau, in credits wrongly named "関"家騮. The Chinese subtitles call him "閔"家騮, which at least matches the actual pronunciation. Even though the subtitles contain lots of errors too, 閔 is also confirmed by an online source providing the complete original novel, so I allowed me to choose this for his role name.