杨守敬和吕蓓卡 (2000)

Based on the information provided, there are no identifiable LGBTQ+ characters or themes within the film. Therefore, an evaluation of its portrayal of LGBTQ+ elements is not applicable.

The movie does not contain any action or adventure elements.

Without information on the film's plot, characters, or any source material, it is impossible to determine if any character's on-screen gender deviates from a canonically or historically established gender. Therefore, a gender swap cannot be confirmed.

The film portrays the historical figure Yang Shoujing with an actor of the same race. The character Rebecca, a Westerner, is also portrayed by an actress whose race aligns with the character's likely background, with no prior canon establishing a different race.