How do idol stars keep warm in this harsh winter?

On the January 30th, the first episode of "Dream High 2" was aired. The cast and crew of the show are gaining respect for working hard through the tough weather conditions in Korea. 

Photos of Dream High 2 Stars popped up online, covered up in blankets, wearing big oversized winter jackets and using portable heaters in the negative 15 degrees celsius/5 degrees fahrenheit weather.