What differs Korean Japanese Chinese, traditional mask?

Korean masks tend to be left with a wooden color, and show happy faces of both male and female subjects. Chinese masks tend to have many swirl patterns and have many bright colors. Japanese masks tend to resemble dragons, or beasts, and faces are depicted as very white.

Where are the choices?

Maybe ech person had their own set of drawing skills like maybe one person could only do contrasting and the other could do realistic detailing