She is professionally known by her given name 弦子 (Xianzi) which translates to "harp" in English.
While Zhang was in high school, she composed several songs with her classmates and posted them on the internet.
In 2005, she was discovered by Taiwanese producer Zihong Chen and became a singer.
In 2006, she collaborated with Will Pan on the song “I Have to Love (不得不愛; Bu De Bu Ai)” from his fourth studio album The Expert, a Chinese-language remake of the 2004 Korean song, "Y (Please Tell Me Why)" by Freestyle.
[1] This song made her popular in both Mainland China and Taiwan.