When I met Song Joong Ki for the first time years ago, he looked to be full of confidence in his future. At first, I misunderstood that he was arrogant. However, I was wrong. He was confident of himself because he put efforts into his works that much. There's no other young Korean actors who try as hard as him. All the drama staff members talk about this, and that's why Song Joong Ki is so loved by the industry workers. Song Joong Ki is a good speaker and he's quite smart. He knows what he has to do as an actor and as a super star. I'm sure he will be active as an actor in the Korean entertainment world for a long time. And as he doesn’t usually act like a celebrity, he sometimes looks like an ordinary young healthy man.
Source : KpopBehind