Chinese language and the term "Yue 越 (Việt)"
Chinese History - Yue 越 (Việt) (www.chinaknowledge.de)
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The Yue chieftains Wuzhu 無諸 and Yao 搖 were kings of the area of Fujian in a realm called Ouluo 甌雒. The mountainous territory of modern Guangxi is inhabited by Non-Chinese tribes until today. At the begin of Han, Zhao Tuo 趙佗 founded the empire of Southern Yue (Nanyue 南越) in the area of Guangdong that was autonomous from the Han court until 112 BC. Emperor Han Wudi 漢武帝 conquered these areas as well as the north of modern Vietnam (Chinese Yuenan 越南, “The South of the Yue”) and installed Chinese commanderies (jun 郡). Although many Yue tribes still roamed the now unified territory of China, and appear in the historical sources until the end of Han, there are only few Yue people left in China today (e.g. Palyu “Lai”, Bugan “Hualuo or Huazu”, Bit, Bulang, Hu, Kemu, Khuen, Wa etc.). Their main heritage is northern 
Vietnam, an area that was settled by the Yue when they withdrew from the Chinese pressure.