Today’s Classifier: 套
套， mainly classifier for films, as in － 套戲，yat tou hei – a ‘wrapper'(?) of film. Possibly from when films came in big metal cases. By the way, the origin of 戲 hei is ‘Chinese opera,’ but is now almost solely used for movies.
The word also pops up in 外套，oi tou, jacket or outside wrap. That was today’s classifier, good night.