- Cai Sha (蔡莎)
- English name: --
- Nickname: Sasa
- Birthday: 94/03/04
- Birth place: Guizhou
- Position: Vocal
- Member since debut.
- First generation trainee.
- First SING's captain.
- Left the group on 2017.
- Singles participation:
- 15/08/12 - 青春的告白 (Youth Confession)
- 15/09/07 - 听见夏至 (Hear the Summer Solstice)
- 15/11/11 - BULU BULU
- 15/12/16 - 灵儿想叮当 (Merry Xmas to U)
- 16/01/14 - 爱情猎手 (Love Hunter)
- 16/02/01 - 恭喜恭喜 (Gongxi Gongxi)
- 16/03/03 - 甜蜜具现式 (Sweet formula)
- 16/03/04 - KISS ME
- 16/03/21 - 战 (War)
- 16/04/06 - 偷偷喜欢你 (Secretly Like You)
- 16/04/21 - 重要的话说三遍 (Important Words Three Times)
- 16/05/04 - 不二情书 (Love Letter)
- 16/05/05 - 飞过时间的海 (Flying over the Sea of Time)
- 16/06/17 - 繁星 (Stars)
- 16/07/26 - 柒月 (July)
- 16/08/10 - 加油加油 (Jiayou! Jiayou!) (Fighting)
- 16/09/07 - 音律进化 (Sound Evolution)
- 16/09/09 - 造梦王国 (Dream Kingdom)
- 16/10/25 - 未完成的素描 (Unfinished Sketch)
may 9 2018 ∞
feb 9 2019 +