The reason a lot of Orientals have completely expressionless faces is to avoid accidently showing facial expressions when people think things they don't Ike, find funny, astonishing etc, and they segregate so their not nearly as susceptible to that happening.
Orientals also segregate and are very untalkative to avoid accidently saying things that are similar to what people are thinking and going to say.
Try thinking and visually picturing things that are as wild as you can when you are around Orientals, and look for Orientals who give people dirty/particular looks for what appears to be for no reason.
PLEASE SPREAD THE MESSAGE!!!!!! THE WORLD NEEDS TO FIND THIS OUT!!!!!!