If I'm not mistaken...
- Idol Producer series (unofficial)
- Idol Producer (Chengxiao was a mentor)
- Youth with you
- Youth with you season 2 (Lisa is the dance mentor, NATURE's Aurora and DC's Hangdong were contestants)
There was also a show where Miss A's Fei was a mentor that flopped and another one where the winners never even got to debut.
- P101 series
- Produce 101 China (WJSN's MeiQi and Xuanyi were contestants, finished first and second and joined Rocket Girls)
- Produce Camp 2019
- Produce Camp 2020 (Victoria is a mentor, gugudan's Sally and Lana are contestants.)
IT'S A MESS.