Who is the female voice in the song "Painting Sand"?

Yuan Yonglin, Jay Chou's new school sister

Cindy Yuan Yonglin and her brother Jay Chou are both students studying classical music, and their conversations are often full of musical sense. Once Jay Chou was playing the guitar, Cindy chatted with him, and all she could think about was how to connect this chord with that chord and how to change this chord. It sounded like a bunch of Martians' things to others, but this was their special way of communication and their similarities.

English name: Cindy

Birthday:1114/1986

Constellation: Scorpio

Blood type: O type

Place of birth: Houston, Texas, USA

Height: 166 cm

Weight: 49 kg

Education: University of Texas at Austin

Major: Music Department-Piano, Violin & Radio and Journalism Department.

Collectibles: fantasy novels, piano scores, CDs.

Leisure hobbies: reading, writing, watching movies, exercising, eating and playing computer games.

Professional musical instruments: piano, violin