Her only film is Goblet of Fire, where she beat out 3,000 girls for the part of Cho Chang. That might be because J.K. rowling insisted that the part of Chang be a complete unknown. According to Leung's father, she had never done a school play before, and she went to the audition "on a whim". Her paretns are Kar Wai Li & Peter Leung, and her father runs a successful restaurant in Glasgow & a thriving Chinese food wholesale business. Source