BC221 is a pre-debut team of trainees formed by Qin's Entertainment.
Current members
Current members consist of trainees who have been revealed. There are still 5 other trainees who have yet to be made public.
- Huang Jialiang (黄佳亮)
- Wang Zihao (王梓豪)
Graduated members
Graduated members consists of trainees who have debuted into a Qin's Entertainment group or as soloists and are now full-fledged artists of their own right.
ONER
- Yue Yue (岳岳)
- Mu Ziyang (木子洋)
- Bu Fan (卜凡)
- Ling Chao (灵超)
HIGH5
- Lin Yiming (麟壹铭)
- Yang Tao (杨淘)
- Feng Chen Sinan (冯陈思楠)
- Ma Sihan (马思涵)
- Liu Xin (刘欣)
Discography
EPs
- Space (2018)
- To Mr. Unknown (2020)
Digital singles
- "If You See Me" (2017)
- "如果你能感同我的身受" (2017)
- "Antidote" (2018)
- "Loki" (2018)
- "Thorn" (2020)
- "Intelligent Life" (2021)
OSTs
- "Operation Red Sea OST" ("红海行动") (2018)