Youngji used to be a CCM trainee and she was really good at dancing... She has danced to song like Sherlock(shinee) Bang(after school) Bad Girl Good Girl(Miss A) And many zaidi wewe will see proof in this links

tafuta this for zaidi covers kwa her : link and also the boys cover : link

In the onyesha where they showed off charns and such she showed that she could dance to the songs (some of them)

In Weekly Idol there she danced to sherlock and warrior.

wewe could also tafuta on google: Youngji dance.