I find in forigen movies, especially of the martial arts kind, it can be hard to recall a particular character's name and if it's a period film and everyone dressess similarly and has similar hair styles... it gets even fuzzier. A big part of this is in a lot of those movies they only call someone by name once, maybe twice in the whole film. So than you go on describing Donnie Yen's character as 'the teacher guy'.