Honghe Hani and Yi Autonomous Prefecture (; Hani: ; Yi: ꉼꉸꉳꆃꁈꆃꁈꊨꏦꍓ) is an autonomous prefecture in Southeast-Central Yunnan Province, China, bordering Vietnam's Lào Cai and Lai Châu provinces to the south. Its name is derived from the Hong (Red) River and the two major ethnic minority groups who live there: the Yi and the Hani. Honghe has an area of and its seat is Mengzi. The total population is 4.8 million, of which 61.3% belong to ethnic minorities. In 2008, the State Administration of Cultural Heritage of the People's Republic of China nominated the Honghe Hani Terraced Fields of Yuanyang County for World Heritage Site status. It was added to the list on 22 June 2013, bringing the total number of World Heritage Sites in China to 45. Subdivisions The prefecture is subdivided into 13 county-level divisions: 4 county-level cities, 6 counties, and 3 autonomous counties: Demographics At the end of 2019, Honghe Prefecture had 4.775 million residents, of which 61.3% belong to ethnic minorities. Ethnic groups in Honghe, 2000 census Ethnic subgroups Honghe Prefecture has the following ethnic Hani subgroups (Honghe Ethnic Gazetteer 1989:32): Hani Nuobi Nuomei Ache Lami Baihong Asuo Budu Qide Gehe Biyue Kaduo Ha'ou () Enu (Ximoluo) Honghe Prefecture has the following 10 ethnic Yi subgroups (Honghe Ethnic Gazetteer 1989:68): Nisubo (exonyms and other names: Luoluo , Sandaohong , Huayao , Muji ) Nibo (exonyms and other names: Sani , Azhe ) Gepo (exonyms and other names: White Yi ) Siqi (exonyms and other names: Large Black Yi , Small Black Yi ) Axibo (exonyms and other names: Axi ) Puwabo , Pulebo (exonyms and other names: Pula ) Alubo (exonyms and other names: Alu ) Lesubo (exonyms and other names: Shansu ) Luobo (exonyms and other names: Awu , Laowu ) Xiangtang Transportation Roads G80 Guangzhou–Kunming Expressway G8011 Kaiyuan–Hekou Expressway G5615 Tianbao–Houqiao Expressway S45 Yuanjiang–Manhao Expressway China National Highway 219 China National Highway 323 China National Highway 326 China National Highway 553 Railways The prefecture is crossed by the early-20th century narrow-gauge Kunming–Hai Phong Railway and its branches. These railways have lost their most of their economic importance after the opening of the standard-gauge Kunming-Hekou railway (whose sections within the prefecture are the Yuxi–Mengzi Railway and the Mengzi–Hekou Railway). The prefecture is also served by the Nanning–Kunming high-speed railway and Mile–Mengzi Railway (under construction). Airport Honghe Mengzi Airport is being built in the prefectural capital