They are not shy.
Political,economic environment impact them,They too much conservative influence of the feudal Confucianism.
They were shy, I didn't know that. Having experience Asians when I am working overseas on some occasions, I think they are bubbly fellows instead, not at all SHY!
They r some thing uncomfortable with new people , once you get to know then they are fine
It depends on if they are americanized. In their culture they are raised to be be more docile quiet and reserved.
Asian has a seperate life style from those of western people,they are not shy at all.