Lạc Việt
The Muong epic "Đẻ đất đẻ nước" (Te tấc te đác) traces their ancestry to a legendary bird couple called Chim y (male bird) and Cái Ứa (female bird). In archaeological and linguistic perspectives, Vietic and Katuic groups began to settle in Northern Vietnam and Laos around 2,000 to 1,000 BC. During the Dongson and Han dynasty periods (500 BC–200 AD), Chinese accounts noted that the Lạc Việt inhabited on the hills of Jiuzhen (Thanh Hoá &amp; Nghệ An) lived by hunting and gathering, and often had to buy rice from Jiaozhi (Red River Delta). They also practiced levirate marriage. Following Trung sisters' rebellion (39–43 AD), a certain leader named Du Yang (Đỗ Dương) of Jiuzhen revolted against the Han and joined the sisters' rebels.