Japanese? Korean?

Coincidentally, both my girls were asked in school today about their nationality.
Marieann was asked if she is a Japanese. Marieann said, "No, I am Chinese". Straight answer.
Juliane was asked if she is a Korean. Juliane said, "I am born like that". Haha. What an answer.
In my childhood days, I was also asked if I am Japanese. I was often mistaken for a Japanese by the Japanese community at UQ when I was studying there lol. :P
Sorry, we aren't Japanese or Korean. We are Chinese. :)