Big World (2024) does not explicitly feature LGBTQ+ themes or characters. The narrative centers on the protagonist's personal journey and relationships, which do not extend into LGBTQ+ representation based on available information.

Based on the provided information, there is no data to analyze or summarize the portrayal of transsexual characters or themes in 'Big World'. The film's content regarding trans representation is not mentioned in the search results.

The movie does not contain any action or adventure elements.

The film "Big World" focuses on original characters, including a male protagonist and his female family members. There is no indication of any character being an adaptation of a previously established figure whose gender has been changed, nor any narrative elements involving gender identity transformation or role reversal.

'Big World' is an original Chinese film centered on Chinese characters and cultural contexts. The provided information explicitly states that the film does not involve race swapping or cross-racial casting, authentically portraying Chinese society.