Macy Ma (Ma Si-hui) was born on December 21, 2000, in Shunde District, Foshan City, Guangdong Province, China. She is a singer and dancer. In 2018, Macy participated in the Pearl River Channel's "Voice of Cantonese" competition, where she finished as the runner-up and subsequently signed with Emperor Entertainment.
On May 2, 2020, she took part in Tencent Video's talent show "CHUANG 2020," ultimately ranking twenty-fourth. On August 12 of the same year, she officially debuted as a solo artist with her first single "One Moment, One Like."
On September 10, 2022, Macy performed at the "Extreme Love Night—2022 Guangdong TV Mid-Autumn Festival Gala," singing the song "We Love Each Other" and participating in a skit titled "Love in Freedom." On January 8, 2023, her starring film "Ultimate Revenge" was released.
In 2024, she joined the girl group VIVA under Emperor Entertainment and debuted with the group single "Topic Killa" on May 27. The same year, on July 15, she appeared in the film "Inexternal," which was officially released.