The provided input for the film 'About Love' did not include any plot details or character information. Consequently, an evaluation of its portrayal of LGBTQ+ characters and themes cannot be performed, and no depiction could be identified from the given data.

Due to the absence of any plot details or character information for the film "串串风铃响", an evaluation of its portrayal of transsexual characters and themes cannot be conducted. Therefore, the net impact is deemed N/A.

The movie does not contain any action or adventure elements.

There is no widely available information or source material indicating that "About Love" (1973) is an adaptation or reboot where characters were canonically or historically established with a different gender prior to this film's release.

The film "About Love" (1973) is an original short film with generic characters (Man, Woman, Boy). There is no prior source material, historical context, or previous adaptations where these characters' races were established. Consequently, no race swap could have occurred.