Star from the South Korean Television series Great Kick 3 and More Charming each day who all also performed in the lady group f(x). She was scouted by S.M. Entertainment and started filming advertisements and dance in music movies in her teenagers. She and the others of f(x) produced their debut in Sept 2009, per day after the discharge of their initial single as well as the initial 40 seconds from the music video. Her old sister is vocalist Jessica Jung. She started a romantic relationship with vocalist Kai. She co-starred with Recreation area Ha-sun over the series Great Kick 3: Revenge from the Short Legged.