But I would say this guy is great and smart.He is smart enough to achieve such a sucessful career and reputation in the whole world.

But meanwhile he have put more effort on his piano training than people could imagine.

He is definitely not an idiot. Maybe in someway, you can say he is a little naive.

I also think Langlang is simpler than most people who made negative judgement on him.That simplicity atcually contributes to his success.

As to the song he choose to play in this event, it might be the idea of somebody else, even it is his own,he still can not be titled as idiot.