NCT 127 use the power of Twitter to answer some common questions about K-pop. Does a K-pop star have to be from Korea? Why are some K-pop groups so large? Do K-pop bands have opening acts? Taeil, Johnny, Taeyong, Yuta, Doyoung, Jaehyun, Winwin, Jungwoo, Mark, and Haechan answer all these questions and more!