Ai Là Triệu Phú is the Vietnamese adaptation of Who Wants to Be a Millionaire, the quiz format created in the United Kingdom in which contestants answer increasingly difficult questions to win a large cash prize. The Vietnamese show has run on national television for many years and its dramatic music and question format are familiar to viewers across the country. Online, creators reuse its opening sting outside the studio, borrowing its built-in suspense for trivia challenges, school quizzes and reaction videos, which keeps the sound recognisable even to people who have never watched a full episode.