The Lạc Việt or Luoyue were a conglomeration of multilinguistic, specifically Kra-Dai and Austroasiatic, Yue tribal peoples that inhabited ancient northern Vietnam, and, particularly the ancient Red River Delta,^[24] from ca. 700 BCE to 100 CE, during the last stage of Neolithic Southeast Asia and the beginning of classical antiquity period. From the archaeological perspectives, they were known as the Dongsonian. The Lac Viet was known for casting large Heger Type I bronze drums, cultivating paddy rice, and constructing dikes. The Lạc Việt who owned the Bronze Age Đông Sơn culture, which centered at the Red River Delta (now in northern Vietnam, in mainland Southeast Asia),^[25] are hypothesized to be the ancestors of the modern Kinh Vietnamese.^[26] Another population of Luoyue, who inhabited the Zuo river's valley (now in modern Southern China), are believed to be the ancestors of the modern Zhuang people;^[27] additionally, Luoyue in southern China are believed to be ancestors of Hlai people.^[28]