|1 In addition to the Standard Mandarin, English is co-official in Hong Kong (SAR); and correspondingly, Portuguese in Macau (SAR). Similarly, several minority languages are also co-official with Standard Mandarin in minority areas, particularly, Uyghur in Xinjiang, Mongolian (Mainly Cyrillic alphabet, but some also use the Chahar alphabet) in Inner Mongolia, Tibetan in Tibet, and Korean in Yanbian, Jilin.
2 Information for mainland China only. Hong Kong, Macau, and territories under administration of the Republic of China (Taiwan, Quemoy, etc.) are excluded.
3 Area rank is disputed with the U.S. and is sometimes ranked 3rd or 4th. See Geography section