Without specific plot details or character information for '{姐姐的情人}', it is not possible to identify any LGBTQ+ characters or themes. Therefore, an evaluation of its portrayal is not applicable based on the provided context.

Due to the absence of any available plot details or character information for the film {旺财嫂} (1967), it is not possible to evaluate whether transsexual characters or themes are present, or how they might be portrayed.

The movie does not contain any action or adventure elements.

The film is presented without reference to prior source material, historical figures, or previous installments. Without a pre-existing canonical gender for its characters, no gender swap can be identified according to the provided definition.

This 1967 Hong Kong film is a local production. There is no evidence to suggest it is an adaptation of source material or a biopic where characters were canonically or historically established as a different race than portrayed by the cast.