Vietnamese historians regard Trieu Da as a…

Vietnamese historians regard Trieu Da as a defender of their homeland against an expanding Han empire.

In 111 BCE, however, the Chinese armies of Emperor Wu Di defeat the successors of Trieu Da and incorporate Nam Viet into the Han empire.

The Chinese are anxious to extend their control over the fertile Red River Delta, in part to serve as a convenient supply point for Han ships engaged in the growing maritime trade with India and Indonesia.