Heechul admits he was a rebel during his trainee years

On the March 23 airing of 'Happy Together 3', Heechul was asked if he was really a rebel during his trainee years.

The idol answered,"I moved from Gangwon-do to Seoul when I was 20-years-old. I always listened to music and I told (staff noona) that I was listening toKISS' music. The noona then told me that I shouldn't listen to that kind of music but listen toLinkin Parkand study. So I said, 'Noona, rock music isn't something that you can study.' She yelled at me for talking back and told me to write up an apology. I responded, 'I'm not sorry for anything but I'll do it anyway since you're telling me to'."