- YeoQi (Yeo/reum and Mei Qi)
- MeiSook (Mei Qi and Jin/sook)
- JinQi (Jin/sook and Mei Qi)
- They both have brown eyes.
- Mei Qi has purple hair but Yeoreum has silver hair.
- Mei Qi was born in Henan, China but Yeoreum was born in Seoul, South Korea.
- Mei Qi was born in 1998 but Yeoreum was born in 1999.
- Mei Qi is an actress but Yeoreum is not.
- Mei Qi doesn't have siblings but Yeoreum has a younger brother.
- Mei Qi doesn't play any instruments but Yeoreum can play piano, pipe and jjangu.
- Mei Qi is in the sub-units Natural and ενύπνιον but Yeoreum is in the sub-units Joy and φορεύς.
- They are both in the group Cosmic Girls.
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