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 (, }}; , 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. During the Han dynasty, the commandery was part of a province of the same name (later renamed to Jiaozhou) that covered modern-day northern and central Vietnam as well as Guangdong and Guangxi in southern China. In 679 AD, Jiaozhi was absorbed into the Annan Protectorate established by the Tang dynasty. Afterwards, official use of the name Jiaozhi was superseded by "Annan" (Annam) and other names of Vietnam, except during the brief fourth period of Chinese rule when the Ming dynasty administered Vietnam as the Jiaozhi Province. Provided by Wikipedia