2 Become 1 is a 2006 Hong Kong romantic comedy-drama film directed by Law Wing-Cheong and produced by Johnnie To. The film stars Miriam Yeung as Bingo Leung, a working-class woman who discovers she has breast cancer. The film is based on Xi Xi's published diary Mourning For Breasts (哀悼乳房), which chronicled her own experiences.

Miriam Yeung Chin-wah is a Hong Kong singer and actress. As of 2020, she has released more than 35 albums and has starred in more than 40 films. In 2012, Yeung won the Award for Best Actress at the 32nd Hong Kong Film Awards for portraying Cherie Yu in Love in the Buff.