What stereotypes do foreigners have about China that will surprise people in China?

In sociology class, the professor invited a Chinese-American photographer to talk about his Asian identity. This photographer is a second-generation immigrant whose parents don't know English at all. He is the only person in his family who was born in America. After he went to school, he noticed a very strange thing Everyone is willing to ask him questions about mathematics that he can't understand. When he asked, the American said, you look like a good math teacher.