What is the ethnic group of Northeast Asia?
Northern  China, Korea, and Japan all appear to be of the same ethnicity as  opposed to Southeast Asia.  Whenever I try to look it up online I just  get answers that are lingo-political, such as Chinese, Korean, Japanese,  etc.  Take away the borders and these are all the same people right? 
Other - Cultures & Groups - 5 Answers
Random Answers, Critics, Comments, Opinions :
1 :
East Asian
2 :
they don't look the same at all There's the Altaic Asian(Korean and Japanese) and then there's the Silotic(Chinese. They're very different in looks and culture
3 :
I  think many folks would tell you that they see differences in the  physical appearance of the three populations, suggesting that the groups  are not the same.  Indeed, it seems as though the three (Chinese,  Korean, and Japanese) do have different ancient ethnic roots, as  follows:  Japanese - descended from the Jomon (native to Japan) and Yayoi (which  may include some Korean or Chinese blood)  Chinese (Han) - descended from the Huaxia (from around the Hwang  Ho/Yellow River)  Korean - descended from Altaic-Siberians (similar to Turkic and  Mongolian groups)  It's not just lingo-political.  And, needless to say, the groups see  their own cultures as very distinct from one another.
4 :
Hans are probably the majority.
5 :
Korean  and Japanese are Altaic from Middle Asia. Also, linguistically, Korean and Japanese have almost same grammar  structure even though they have own characters. Besides, Chinese are  totally different from them.  eg:  Korean, Japanese = Subject + Object + Verb,  Chinese = Subject + Verb + Object.   - Siberian, Manchurian, Mongolian, Korean, Japanese belong to the  Altaic group.   - Chinese, Tibetan, Thailander, Vietnamese, Myamese and other south  east Asians belong to the same ethnic/linguistic group.
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