Former FIESTAR member Cao Lu revealed what she's been up to lately and talked about her ongoing friendship with her former fellow groupmates.

On the April 16th episode of 'King of Mask Singer', Cao Lu competed as a singer and shared why she decided to return to her home country of China. She expressed, "I worked in Korea for 14 years, but when I saw my mother with a lot of gray hair, I thought I should stay with my parents."

As for her continuing friendship with the FIESTAR members, Cao Lu said, "Main vocal Hyemi picked the song and recorded for me. Jei was my manager. She drove me, and she's even in the waiting room right now." 

Cao Lu further revealed she competed on a comedian show in China, saying, "A producer who saw me on 'Radio Star' cast me, but the response on the set of the show wasn't good. I was eliminated. I think I was able to seem like a funny person because all my sunbaes responded to me well."