Lin En-hsien, a professor in the Department of Sociology at National Chengchih University, says that the problem of ethnic identity is a complex one. How does one determine whether or not one is part of this or that ethnic group? Besides direct bloodlines, other important indicators include language, culinary culture, life styles, and other aspects of culture. Beyond these, belonging to an ethnic group or not becomes very subjective.
政大社會系教授林恩顯指出，民族認同的問題有些複雜，如何認定屬不屬於這個民族，是不是這個民族的一支，血統之外，很重要的是如語言、飲食習慣、生活方式等文化保留的情況；另外，就是主觀上是否有民族意識等。