Jiaozhi
Jiaozhi (standard Chinese, pinyin: Jiāozhǐ, Vietnamese: Giao Chỉ), was a historical region ruled by various Chinese dynasties, corresponding to present-day northern Vietnam. The kingdom of Nanyue (204–111 BC) set up the Jiaozhi Commandery (Chinese: 交趾郡, 交阯郡; Vietnamese: Quận Giao Chỉ, chữ Hán: 郡交趾) an administrative division centered in the Red River Delta that existed through Vietnam's first and second periods of Chinese rule.