Sun opened up about spending her youth with Wonder Girls and her favorite song from the group.

On the August 4th episode of 'Two O'Clock Date with Muzie and Ahn Young Mi', Sun looked back on her time with Wonder Girls, saying, "We ate in the car, and we slept in the car with our mouths open and makeup on. We'd wake up then go perform. I don't regret spending my youth with the group. It was a very very precious time."

As for her favorite Wonder Girls song, Sun chose "Nobody" and added, "When I first heard 'Tell Me', I asked myself, 'What is this?' It was a song and concept that I didn't relate to at all. It was American '80s disco, and we didn't relate because we were all born in the '90s."

She continued, "I thought 'Nobody' would work out. I thought it was cool. I thought it was a melody that a lot of people could follow."

In other news, Sun recently made her solo debut with "Just a Dancer".