Please understand that Vietnam officially has 54 ethnic groups, including the 86 percent majority Kinh Vietnamese (like myself) whom mostly look like Han Chinese. The original nation of Vietnam was only the northern part but then they conquered the central and southern regions that were the lands of the Cham in the central and the Cambodians in the far South. Many of these people have long assimilated as Vietnamese for many generations now. Sorry, I am from Australia so I can only communicate in English and use Google Translate to read your comments.