[2] Diagnosed with Asperger syndrome and ADHD during primary school, he struggled with speaking and faced bullying due to his condition.

[5] In November 2021, after winning a Hong Kong Film Award, he decided to drop out of school in Form 5 to pursue a full-time acting career.

[8] At the age of 15, Fung shared a lead role with Leung Chung Hang as the younger version of So Wa Wai, an Paralympic-winning athlete, in the biographical film Zero to Hero.

[12][13] In July 2022, following his win at the Hong Kong Film Awards, Fung announced his intention to join the TVB's Artiste Training Class [zh] to enhance his oral and presentation skills.

[18] In 2024, he received a starring role as the autistic brother of Venus Wong in the TVB crime series Forensic Heroes VI: Redemption [zh].