She danced to 'Love Confession Balloon' on TikTok.
Tips
culture
Track from Jay Chou's 2016 album 《周杰伦的床边故事》 ('Jay Chou's Bedtime Stories'). Became the first Mandarin song to hit #1 on Spotify's global viral chart in 2017 and exploded again on Douyin/TikTok with a dance trend. The 'confession balloon' image comes from a cliché Parisian street-vendor scene in the MV.
usage
告白 = 'confession (of love)' — a loanword popularized via Japanese and Taiwanese drama. Combined with 气球 ('balloon'), it evokes a light, festive proposal — now a staple wedding and Valentine's Day song.