as you guys know ,china 's drama is full of voice dub
so what if kpop idols use voice dub? most kpop idolds just cannot sing well and voice dub from another talented person would increase the marketability of the idols ( so that you guys could keep hyping about their talent duh 
)
plus kpop idols do lip sync 99 percent of time- dont think it would make any difference 
btw ,i already suspect that some idols do use voice dub because their live singing is so different from the recorded song 
