In 2015, So made her acting debut in the romance film
She Remembers, He Forgets, where she shared a lead role with
Miriam Yeung as the younger version of Gigi, a member of a close-knit trio of friends who secretly loves
Ng Siu-hin's character but ultimately ends up marrying
Neo Yau's character in the future. She was personally cast by director during the audition, and So credited her previous modeling experience with helping her feel comfortable in front of the camera. while Edmund Lee of
South China Morning Post also acknowledged So's casting, describing it as "adding a further sheen to the story". She starred as the female lead alongside
Alex Fong in
Patrick Kong's romance film '''', playing the younger version of
Gigi Leung's character in
The Monkey King 3, and appeared in ''
, the spinoff web series of the Infernal Affairs
film series, as a police detective and the daughter of the deceased Chan Wing-yan (played by Tony Leung Chiu-wai in Infernal Affairs''). In late 2019, So initially planned to take a hiatus from acting and enrolled in a two-year acting program in the United States. However, after one semester, the
COVID-19 pandemic broke out, leading to the suspension of classes and forcing So to quit and return to Hong Kong. '' in November 2022 In 2020, So landed a starring role alongside
Wong You-nam in the horror comedy film ''
, portraying Chiu Ling-kay, a woman who can communicate with the dead. while Tay Yek Keak of Today'' compared her character to
Whoopi Goldberg's in
Ghost. The following year, she had a main role in the
ViuTV drama series '
, In 2022, she appeared in the anthology film ' as a social media influencer. but her performance in the series was negatively received. That same year, So signed with
Warner Music Hong Kong and debuted as a singer with songs she had written during the pandemic. She received a bronze prize for Most Promising Artist in the
2023 Top Ten Chinese Gold Songs Awards. == Personal life ==