Many things, like our accents (口音), can show people where we are from. So can our body and facial movements. Researchers have found that most people can tell apart photos of Japanese people and Japanese-Americans. When the people in the photos had no facial movements, it was hard to tell. But when they showed their feelings, especially sadness, it became easy. Another example is how German and British people show the number three with their fingers in different ways. Germans raise their thumb (大拇指) and first two fingers; Britons raise the three fingers in the middle.